A new portable vibrator for plaster pouring: effect on the marginal fit at cylinder-abutment
Identifieur interne : 000610 ( Pmc/Corpus ); précédent : 000609; suivant : 000611A new portable vibrator for plaster pouring: effect on the marginal fit at cylinder-abutment
Auteurs : Pâmela Cândida Aires Ribas De Andrade ; Leonardo Flores Luthi ; Kyle Stanley ; Antônio Carlos CardosoSource :
- Journal of Applied Oral Science [ 1678-7757 ] ; 2012.
Abstract
The aim of this study was to test a new portable vibrator for plaster pouring (developed for this purpose), comparing the effect of its use on the accuracy of working cast of implant-supported restorations to the conventional vibrator.
From a master cast with 2 implants, 30 transfer moldings were made randomly and divided into three groups: Group I (GI): pouring performed in an outsourced dental laboratory with conventional plaster vibrator (10 casts), Group II (GII): pouring performed in the laboratory of the Federal University of Santa Catarina (UFSC) with conventional plaster vibrator (10 casts) and Group III (GIII): pouring performed with the portable vibrator fabricated for this study (10 casts). The position of the analogue and marginal adaptation of the infrastructure were verified by testing the single screw on the master model and on the working model. The measurement of misfit was blindly performed with a precision microscope and analyzing unit, Quadra-Check 200. The data were statistically analyzed by analysis of variance (ANOVA) and the Holm-Sidak test (α=0.05).
Means±standard deviations were as follows: GI: 19.19±4.73 µm; GII: 21.72±5.41 µm; GIII: 13.5±2.39 µm (P<0.05), with GIII significantly lower as compared to the other groups.
Within the limitations of this study, it was concluded that a greater accuracy of working cast was achieved when a portable vibrator was used for casting molds.
Url:
DOI: 10.1590/S1678-77572012000500004
PubMed: 23138736
PubMed Central: 3881794
Links to Exploration step
PMC:3881794Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">A new portable vibrator for plaster pouring: effect on the marginal fit
at cylinder-abutment</title><author><name sortKey="De Andrade, Pamela Candida Aires Ribas" sort="De Andrade, Pamela Candida Aires Ribas" uniqKey="De Andrade P" first="Pâmela Cândida Aires Ribas" last="De Andrade">Pâmela Cândida Aires Ribas De Andrade</name><affiliation><nlm:aff id="aff01"> DDS, MSc, PhD student, Department of Implant Dentistry, Federal University of Santa Catarina, Florianópolis, SC, Brazil.</nlm:aff></affiliation></author><author><name sortKey="Luthi, Leonardo Flores" sort="Luthi, Leonardo Flores" uniqKey="Luthi L" first="Leonardo Flores" last="Luthi">Leonardo Flores Luthi</name><affiliation><nlm:aff id="aff02"> DDS, MSc, PhD student, Department of Dental Materials and Prosthodontics, University of Campinas, Piracicaba School of Dentistry, Piracicaba, SP, Brazil.</nlm:aff></affiliation></author><author><name sortKey="Stanley, Kyle" sort="Stanley, Kyle" uniqKey="Stanley K" first="Kyle" last="Stanley">Kyle Stanley</name><affiliation><nlm:aff id="aff03"> MSc student, Department of Implant Dentistry, Federal University of Santa Catarina, Florianópolis,SC, Brazil.</nlm:aff></affiliation></author><author><name sortKey="Cardoso, Antonio Carlos" sort="Cardoso, Antonio Carlos" uniqKey="Cardoso A" first="Antônio Carlos" last="Cardoso">Antônio Carlos Cardoso</name><affiliation><nlm:aff id="aff04"> DDS, MSc, PhD, Full Professor, Department of Implant Dentistry, Federal University of Santa Catarina, Florianópolis, SC, Brazil.</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">23138736</idno><idno type="pmc">3881794</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3881794</idno><idno type="RBID">PMC:3881794</idno><idno type="doi">10.1590/S1678-77572012000500004</idno><date when="2012">2012</date><idno type="wicri:Area/Pmc/Corpus">000610</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000610</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">A new portable vibrator for plaster pouring: effect on the marginal fit
at cylinder-abutment</title><author><name sortKey="De Andrade, Pamela Candida Aires Ribas" sort="De Andrade, Pamela Candida Aires Ribas" uniqKey="De Andrade P" first="Pâmela Cândida Aires Ribas" last="De Andrade">Pâmela Cândida Aires Ribas De Andrade</name><affiliation><nlm:aff id="aff01"> DDS, MSc, PhD student, Department of Implant Dentistry, Federal University of Santa Catarina, Florianópolis, SC, Brazil.</nlm:aff></affiliation></author><author><name sortKey="Luthi, Leonardo Flores" sort="Luthi, Leonardo Flores" uniqKey="Luthi L" first="Leonardo Flores" last="Luthi">Leonardo Flores Luthi</name><affiliation><nlm:aff id="aff02"> DDS, MSc, PhD student, Department of Dental Materials and Prosthodontics, University of Campinas, Piracicaba School of Dentistry, Piracicaba, SP, Brazil.</nlm:aff></affiliation></author><author><name sortKey="Stanley, Kyle" sort="Stanley, Kyle" uniqKey="Stanley K" first="Kyle" last="Stanley">Kyle Stanley</name><affiliation><nlm:aff id="aff03"> MSc student, Department of Implant Dentistry, Federal University of Santa Catarina, Florianópolis,SC, Brazil.</nlm:aff></affiliation></author><author><name sortKey="Cardoso, Antonio Carlos" sort="Cardoso, Antonio Carlos" uniqKey="Cardoso A" first="Antônio Carlos" last="Cardoso">Antônio Carlos Cardoso</name><affiliation><nlm:aff id="aff04"> DDS, MSc, PhD, Full Professor, Department of Implant Dentistry, Federal University of Santa Catarina, Florianópolis, SC, Brazil.</nlm:aff></affiliation></author></analytic><series><title level="j">Journal of Applied Oral Science</title><idno type="ISSN">1678-7757</idno><idno type="eISSN">1678-7765</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Objective</title><p>The aim of this study was to test a new portable vibrator for plaster pouring
(developed for this purpose), comparing the effect of its use on the accuracy of
working cast of implant-supported restorations to the conventional vibrator. </p></sec><sec><title>Material and methods</title><p>From a master cast with 2 implants, 30 transfer moldings were made randomly and
divided into three groups: Group I (GI): pouring performed in an outsourced dental
laboratory with conventional plaster vibrator (10 casts), Group II (GII): pouring
performed in the laboratory of the Federal University of Santa Catarina (UFSC)
with conventional plaster vibrator (10 casts) and Group III (GIII): pouring
performed with the portable vibrator fabricated for this study (10 casts). The
position of the analogue and marginal adaptation of the infrastructure were
verified by testing the single screw on the master model and on the working model.
The measurement of misfit was blindly performed with a precision microscope and
analyzing unit, Quadra-Check 200. The data were statistically analyzed by analysis
of variance (ANOVA) and the Holm-Sidak test (α=0.05).</p></sec><sec><title>Results</title><p>Means±standard deviations were as follows: GI: 19.19±4.73 µm; GII: 21.72±5.41 µm;
GIII: 13.5±2.39 µm (P<0.05), with GIII significantly lower as compared to the
other groups. </p></sec><sec><title>Conclusion</title><p>Within the limitations of this study, it was concluded that a greater accuracy of
working cast was achieved when a portable vibrator was used for casting molds.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Barbosa, Ga" uniqKey="Barbosa G">GA Barbosa</name></author><author><name sortKey="Neves, Fd" uniqKey="Neves F">FD Neves</name></author><author><name sortKey="Mattos, Mg" uniqKey="Mattos M">MG Mattos</name></author><author><name sortKey="Rodrigues, Rc" uniqKey="Rodrigues R">RC Rodrigues</name></author><author><name sortKey="Ribeiro, Rf" uniqKey="Ribeiro R">RF Ribeiro</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Barret, Mg" uniqKey="Barret M">MG Barret</name></author><author><name sortKey="Rijk, Wg" uniqKey="Rijk W">WG Rijk</name></author><author><name sortKey="Burgess, Jo" uniqKey="Burgess J">JO Burgess</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Carr, Ab" uniqKey="Carr A">AB Carr</name></author><author><name sortKey="Gerard, Da" uniqKey="Gerard D">DA Gerard</name></author><author><name sortKey="Larsen, Pe" uniqKey="Larsen P">PE Larsen</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Castilio, D" uniqKey="Castilio D">D Castilio</name></author><author><name sortKey="Pedreira, Ap" uniqKey="Pedreira A">AP Pedreira</name></author><author><name sortKey="Rossetti, Ph" uniqKey="Rossetti P">PH Rossetti</name></author><author><name sortKey="Rossetti, Lm" uniqKey="Rossetti L">LM Rossetti</name></author><author><name sortKey="Bonachela, Wc" uniqKey="Bonachela W">WC Bonachela</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Christensen, Jg" uniqKey="Christensen J">JG Christensen</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Del Acqua Ma" uniqKey="Del Acqua Ma">Del'Acqua MA</name></author><author><name sortKey="Arioli Filho, Jn" uniqKey="Arioli Filho J">JN Arioli-Filho</name></author><author><name sortKey="Campagnoni, Ma" uniqKey="Campagnoni M">MA Campagnoni</name></author><author><name sortKey="Mollo, Fa" uniqKey="Mollo F">FA Mollo</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Hsu, Cc" uniqKey="Hsu C">CC Hsu</name></author><author><name sortKey="Millstein, Pl" uniqKey="Millstein P">PL Millstein</name></author><author><name sortKey="Stein, Rs" uniqKey="Stein R">RS Stein</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Inturregui, Ja" uniqKey="Inturregui J">JA Inturregui</name></author><author><name sortKey="Aquilino, Sa" uniqKey="Aquilino S">SA Aquilino</name></author><author><name sortKey="Ryther, Js" uniqKey="Ryther J">JS Ryther</name></author><author><name sortKey="Lund, Ps" uniqKey="Lund P">PS Lund</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Jemt, T" uniqKey="Jemt T">T Jemt</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Jemt, T" uniqKey="Jemt T">T Jemt</name></author><author><name sortKey="Linden, B" uniqKey="Linden B">B Lindén</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Luthardt, Rg" uniqKey="Luthardt R">RG Luthardt</name></author><author><name sortKey="Walter, Mh" uniqKey="Walter M">MH Walter</name></author><author><name sortKey="Weber, A" uniqKey="Weber A">A Weber</name></author><author><name sortKey="Koch, R" uniqKey="Koch R">R Koch</name></author><author><name sortKey="Rudolph, H" uniqKey="Rudolph H">H Rudolph</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Moraes, Lm" uniqKey="Moraes L">LM Moraes</name></author><author><name sortKey="Rossetti, Ph" uniqKey="Rossetti P">PH Rossetti</name></author><author><name sortKey="Rossetti, Lm" uniqKey="Rossetti L">LM Rossetti</name></author><author><name sortKey="Pedreira, Ap" uniqKey="Pedreira A">AP Pedreira</name></author><author><name sortKey="Valle, Al" uniqKey="Valle A">AL Valle</name></author><author><name sortKey="Bonachela, Wc" uniqKey="Bonachela W">WC Bonachela</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Naveen, Hc" uniqKey="Naveen H">HC Naveen</name></author><author><name sortKey="Pillai, Lk" uniqKey="Pillai L">LK Pillai</name></author><author><name sortKey="Porwal, A" uniqKey="Porwal A">A Porwal</name></author><author><name sortKey="Nadiger, Rk" uniqKey="Nadiger R">RK Nadiger</name></author><author><name sortKey="Guttal, Ss" uniqKey="Guttal S">SS Guttal</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Podshadley, Ag" uniqKey="Podshadley A">AG Podshadley</name></author><author><name sortKey="Dilts, We" uniqKey="Dilts W">WE Dilts</name></author><author><name sortKey="Neiman, R" uniqKey="Neiman R">R Neiman</name></author><author><name sortKey="Sawyer, Hf" uniqKey="Sawyer H">HF Sawyer</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Sartori, Ia" uniqKey="Sartori I">IA Sartori</name></author><author><name sortKey="Ribeiro, Rf" uniqKey="Ribeiro R">RF Ribeiro</name></author><author><name sortKey="Franscischone, Ce" uniqKey="Franscischone C">CE Franscischone</name></author><author><name sortKey="Mattos, Mg" uniqKey="Mattos M">MG Mattos</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Tossi, R" uniqKey="Tossi R">R Tossi</name></author><author><name sortKey="Falcao Filho, H" uniqKey="Falcao Filho H">H Falcão-Filho</name></author><author><name sortKey="Aguiar Junior, Fa" uniqKey="Aguiar Junior F">FA Aguiar Júnior</name></author><author><name sortKey="Rodrigues, Rc" uniqKey="Rodrigues R">RC Rodrigues</name></author><author><name sortKey="Mattos, Mg" uniqKey="Mattos M">MG Mattos</name></author><author><name sortKey="Ribeiro, Rf" uniqKey="Ribeiro R">RF Ribeiro</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Waskewicz, Ga" uniqKey="Waskewicz G">GA Waskewicz</name></author><author><name sortKey="Ostrowski, Js" uniqKey="Ostrowski J">JS Ostrowski</name></author><author><name sortKey="Parks, Vj" uniqKey="Parks V">VJ Parks</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Wee, Ag" uniqKey="Wee A">AG Wee</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Wenz, Hj" uniqKey="Wenz H">HJ Wenz</name></author><author><name sortKey="Hertrampf, K" uniqKey="Hertrampf K">K Hertrampf</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Yanase, Rt" uniqKey="Yanase R">RT Yanase</name></author><author><name sortKey="Binon, Pp" uniqKey="Binon P">PP Binon</name></author><author><name sortKey="Jemt, T" uniqKey="Jemt T">T Jemt</name></author><author><name sortKey="Gulbransen, Hj" uniqKey="Gulbransen H">HJ Gulbransen</name></author><author><name sortKey="Parel, S" uniqKey="Parel S">S Parel</name></author></analytic></biblStruct></listBibl></div1></back></TEI><pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">J Appl Oral Sci</journal-id><journal-id journal-id-type="iso-abbrev">J Appl Oral Sci</journal-id><journal-id journal-id-type="publisher-id">J. Appl. Oral. Sci.</journal-id><journal-title-group><journal-title>Journal of Applied Oral Science</journal-title></journal-title-group><issn pub-type="ppub">1678-7757</issn><issn pub-type="epub">1678-7765</issn><publisher><publisher-name>Faculdade de Odontologia de Bauru da Universidade de São
Paulo</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">23138736</article-id><article-id pub-id-type="pmc">3881794</article-id><article-id pub-id-type="doi">10.1590/S1678-77572012000500004</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Articles</subject></subj-group></article-categories><title-group><article-title>A new portable vibrator for plaster pouring: effect on the marginal fit
at cylinder-abutment</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>de ANDRADE</surname><given-names>Pâmela Cândida Aires Ribas</given-names></name><xref ref-type="aff" rid="aff01">1</xref><xref ref-type="corresp" rid="c01"></xref></contrib><contrib contrib-type="author"><name><surname>LUTHI</surname><given-names>Leonardo Flores</given-names></name><xref ref-type="aff" rid="aff02">2</xref></contrib><contrib contrib-type="author"><name><surname>STANLEY</surname><given-names>Kyle</given-names></name><xref ref-type="aff" rid="aff03">3</xref></contrib><contrib contrib-type="author"><name><surname>CARDOSO</surname><given-names>Antônio Carlos</given-names></name><xref ref-type="aff" rid="aff04">4</xref></contrib></contrib-group><aff id="aff01"><label>1</label> DDS, MSc, PhD student, Department of Implant Dentistry, Federal University of Santa Catarina, Florianópolis, SC, Brazil.</aff><aff id="aff02"><label>2</label> DDS, MSc, PhD student, Department of Dental Materials and Prosthodontics, University of Campinas, Piracicaba School of Dentistry, Piracicaba, SP, Brazil.</aff><aff id="aff03"><label>3</label> MSc student, Department of Implant Dentistry, Federal University of Santa Catarina, Florianópolis,SC, Brazil.</aff><aff id="aff04"><label>4</label> DDS, MSc, PhD, Full Professor, Department of Implant Dentistry, Federal University of Santa Catarina, Florianópolis, SC, Brazil.</aff><author-notes><corresp id="c01"><bold>Corresponding address:</bold> Pâmela Cândida Aires Ribas de Andrade -
Universidade Federal de Santa Catarina/CCS/DEPTO STM - Campus Universitário, s/n -
88040-970 - Trindade - Florianópolis - SC - Phone: + 55 (48) 37219077 / + 55 (48)
91645150 - Fax: (48) 3721-9077 - e-mail: <email>pam_ribas@yahoo.com.br</email></corresp></author-notes><pub-date pub-type="ppub"><season>Sep-Oct</season><year>2012</year></pub-date><volume>20</volume><issue>5</issue><fpage>517</fpage><lpage>521</lpage><history><date date-type="received"><day>26</day><month>5</month><year>2011</year></date><date date-type="rev-recd"><day>04</day><month>8</month><year>2011</year></date><date date-type="accepted"><day>05</day><month>9</month><year>2011</year></date></history><permissions><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc/3.0/"><license-p>This is an open-access article distributed under the terms of the Creative
Commons Attribution License, which permits unrestricted use, distribution, and
reproduction in any medium, provided the original work is properly
cited.</license-p></license></permissions><abstract><sec><title>Objective</title><p>The aim of this study was to test a new portable vibrator for plaster pouring
(developed for this purpose), comparing the effect of its use on the accuracy of
working cast of implant-supported restorations to the conventional vibrator. </p></sec><sec><title>Material and methods</title><p>From a master cast with 2 implants, 30 transfer moldings were made randomly and
divided into three groups: Group I (GI): pouring performed in an outsourced dental
laboratory with conventional plaster vibrator (10 casts), Group II (GII): pouring
performed in the laboratory of the Federal University of Santa Catarina (UFSC)
with conventional plaster vibrator (10 casts) and Group III (GIII): pouring
performed with the portable vibrator fabricated for this study (10 casts). The
position of the analogue and marginal adaptation of the infrastructure were
verified by testing the single screw on the master model and on the working model.
The measurement of misfit was blindly performed with a precision microscope and
analyzing unit, Quadra-Check 200. The data were statistically analyzed by analysis
of variance (ANOVA) and the Holm-Sidak test (α=0.05).</p></sec><sec><title>Results</title><p>Means±standard deviations were as follows: GI: 19.19±4.73 µm; GII: 21.72±5.41 µm;
GIII: 13.5±2.39 µm (P<0.05), with GIII significantly lower as compared to the
other groups. </p></sec><sec><title>Conclusion</title><p>Within the limitations of this study, it was concluded that a greater accuracy of
working cast was achieved when a portable vibrator was used for casting molds.</p></sec></abstract><kwd-group><kwd>Plaster casts</kwd><kwd>Implant-supported dental prosthesis</kwd><kwd>Dental impression materials</kwd></kwd-group></article-meta></front><body><sec><title>INTRODUCTION</title><p>The oral rehabilitation of patients with implants requires the placement of stable
prostheses enabling security, comfort and longevity to treatment. The beginning of the
construction of prosthetic treatment requires the faithful reproduction of the working
cast of the situation found in mouth, to reduce the errors inherent to this
stage<sup><xref ref-type="bibr" rid="r17">17</xref></sup>.</p><p>Numerous studies<sup><xref ref-type="bibr" rid="r02">2</xref>,<xref ref-type="bibr" rid="r08">8</xref>,<xref ref-type="bibr" rid="r09">9</xref>,<xref ref-type="bibr" rid="r19">19</xref></sup> have tried to find the "perfect" fit between prosthetic
components and the implant. However, the variables found in the steps of the clinical
and laboratory procedures involved in the fabrication prostheses become an obstacle in
the search for a perfect fit<sup><xref ref-type="bibr" rid="r07">7</xref></sup>, leading
to errors that make it impossible to obtain a dental implant with a perfect framework
fit<sup><xref ref-type="bibr" rid="r12">12</xref></sup>.</p><p>During the production stages of a cast, some processes may influence the correct
analogue position of the working cast, increasing the chances of distortion and misfit
of the final prosthesis<sup><xref ref-type="bibr" rid="r06">6</xref></sup>. The casting
material used<sup><xref ref-type="bibr" rid="r02">2</xref></sup>, the casting
technique<sup><xref ref-type="bibr" rid="r02">2</xref>,<xref ref-type="bibr" rid="r07">7</xref>,<xref ref-type="bibr" rid="r11">11</xref></sup> and the casting
impression conditions are factors that can influence the accurate reproduction of the
clinical situation<sup><xref ref-type="bibr" rid="r18">18</xref></sup>.</p><p>Another important aspect to be considered is the step of sending the molds to the
laboratory. A study by Christensen<sup><xref ref-type="bibr" rid="r05">5</xref></sup>(1997) demonstrated that most jobs ready to be poured with gypsum were deficient in some
aspect<sup><xref ref-type="bibr" rid="r06">6</xref></sup>. The
literature<sup><xref ref-type="bibr" rid="r02">2</xref>,<xref ref-type="bibr" rid="r07">7</xref>,<xref ref-type="bibr" rid="r11">11</xref></sup>, although large
and concerned with the techniques and impression materials, is scarce when dealing with
the variables of everyday practice. A small number of studies focused on the influence
of factors such as casting of the plaster cast<sup><xref ref-type="bibr" rid="r14">14</xref></sup> or the technique for casting on dimensional changes of the
casts.</p><p>In an attempt to minimize distortions in the procedures for obtaining a working cast,
improve the accuracy of implant prostheses and assist dentists, we developed a small,
silent and portable vibrator. We hypothesized that this device would be able to reduce
the vibration generated by conventional devices, thus leading to fewer changes in the
working cast, better adaptation between the cylinders of implant-supported dentures and
their respective analogues. This would result in a more faithful copy of the situation
in the mouth, with minimal bubbles and dimensional change in the working cast.</p><p>The purposes of this study were to test the technique of casting plaster using this
portable vibrator device, comparing it with conventional methods, and to evaluate the
influence of this device on the position of implant analogue working casts.</p></sec><sec sec-type="materials|methods"><title>MATERIAL AND METHODS</title><p>A master acrylic resin template (Palaton - Dencril, Pirassununga, SP, Brazil) of a Class
IV edentulous maxillary arch, with two external hexagonal implants Ø 3.75x11 mm (Master
Screw; Conexão Sistemas de Próteses, São Paulo, SP, Brazil) positioned in the region of
the maxillary right lateral incisor (A) and maxillary left lateral incisor (B) was
manufactured for the study design (<xref ref-type="fig" rid="f01">Figure 1</xref>). Two
abutments (Micro-unit; Conexão Sistemas de Próteses, Arujá, SP, Brazil) were installed
by manual ratchet key until a torque of 20 N.cm was produced according to the
manufacturer's directions and 30 transfer moldings were made with open trays. This cast
was then randomly divided into three groups, depending on the plaster casting
technique:</p><fig id="f01" orientation="portrait" position="float"><label>Figure 1</label><caption><p>Step-by-step fabrication of the portable device designed to casting plaster (a):
electric toothbrush; (b): bristles of the brush removed; (c): hole on tip of the
toothbrush in place of the bristles; (d): installation of the tip of a brush on
the opposite side of the bristles and (e): portable vibrator ready</p></caption><graphic xlink:href="jaos-20-05-0517-g01"></graphic></fig><p>Group I (GI):pouring performed at an outsourced dental laboratory with conventional
plaster vibrator (10 casts);</p><p>Group II (GII):pouring performed at UFSC laboratory with conventional plaster vibrator
(10 casts);</p><p>Group III (GIII): pouring performed with the portable vibrator fabricated for this study
(10 casts).</p><p>To make the impressions, standard size (no. 3) perforated plastic trays were used (JG,
JON, São Paulo, SP, Brazil), with an opening at the top of two holes designed for the
removal of screws for transferring squares. The material of choice for the impression
was polyvinyl siloxane (PVS) (Express XT Silicone Addition, 3M ESPE, USA)<sup><xref ref-type="bibr" rid="r19">19</xref></sup> and manipulation was done by the single
step double impression technique<sup><xref ref-type="bibr" rid="r07">7</xref>,<xref ref-type="bibr" rid="r11">11</xref></sup>. The transfer copings were screwed in
their abutments in the master cast and splinted together with a metal rod and acrylic
pattern resin (Trim Plus Red - Acrylic Pattern; Harry J. Bosworth Company, Skokie, IL,
USA)<sup><xref ref-type="bibr" rid="r09">9</xref></sup>, reducing the distortion
of polymerization. After 10 min of union with transferring acrylic resin, heavy-body PVS
was handled according to the manufacturer's instructions and the tray was loaded with
the material, while light-body PVS was injected into the region of the implants and
their components. To standardize the molding, heavy-body PVS was measured in a plastic
syringe injector for elastomer (JON) filled with slurry by cast. Setting of the dummy
tray was held constant with manual pressure until it clicked into a reference point
located on the mannequin, then held in position for 10 min to complete polymerization of
the material. All impressions were made in the same temperature-controlled air
conditioning between 18ºC and 22ºC. After the mold was ready, the transfer copings were
loosened to remove the impression and screwed to the respective analogues of the
abutments (Conexão Sistemas de Próteses). For all transfer copings a torque of 10 N.cm
was applied manually with a keyed ratchet (Conexão Sistemas de Próteses), but the
placement of analogues was performed with a digital grip, because the torque applied by
a 10 N.cm ratchet could cause rotation of the transferor PVS<sup><xref ref-type="bibr" rid="r02">2</xref>,<xref ref-type="bibr" rid="r08">8</xref></sup>. Adaptation of
impressions prior to the tightening grip and digital analogue was again verified by the
transferor with explorer no. 05 (Duflex SS White, Rio de Janeiro, RJ, Brazil).</p><p>When the impressions were ready, with the union of the analogues, they were randomly
assigned to groups according to the technique of casting plaster. The 30 plaster casts
used microgranulated special type IV plaster (Durone, Dentisply, Petrópolis, RJ,
Brazil), and pouring was conducted in an area for at least 60 min and at most 3 days
after the order was ready.</p><sec><title>Fabricating the portable vibrator</title><p>For casting plaster of Group III, we developed a portable vibrator made from an
electric toothbrush (360º Sonic Power, Colgate Palmolive Ind. e Com. São Paulo, SP,
Brazil). The bristles of the brush were removed using a carborundum disk-type cutter
and maxi-cut, and a hole in the place of the bristles was made for installation of
the tip of a brush on the opposite side (round marta brush Tropical 006, Tigre, São
Paulo, SP, Brazil), maintaining a slight inclination toward the end to facilitate
placement of the plaster inside the impression (<xref ref-type="fig" rid="f01">Figure
1</xref>).</p></sec><sec><title>Casting molds for Group I</title><p>Ten impressions were sent to the outsourced laboratory, in a routine procedure for
work on prosthetic implants. Along with the impressions, an order tab was included
with the request for plaster casting of special type IV, for a minimum
standardization with the other groups.</p></sec><sec><title>Casting molds for Groups II and III</title><p>The casts of Groups II and III were poured with 100 g of powder type IV gypsum,
proportioned to 22 mL of water<sup><xref ref-type="bibr" rid="r06">6</xref>,<xref ref-type="bibr" rid="r08">8</xref></sup> and hand-mixed for 60 s. Insertion of
the plaster cast was performed according to the technique assigned to each group,
with Group II using the leaked vibrator with conventional casting and Group III with
the portable vibrator. After a period of at least 1 h of setting time for the
plaster, the working casts were removed from the mold. All casts were stored at room
temperature for at least 92 h before assessment of misfit<sup><xref ref-type="bibr" rid="r08">8</xref></sup>. To standardize the samples, all steps of molding,
tooling, and casting of plaster were made by the researcher in charge, while handling
the PVS was done by an assistant operator.</p></sec><sec><title>Evaluation of discrepancies in the position of casts and analogues</title><p>Verification of the accuracy of the position of analogues and comparison between
groups was performed to develop an infrastructure (IE) from two metal cylinders of
titanium abutment micro-unit, bolted to the abutment of the master cast (MC) and
joined together by a titanium bar and laser welding<sup><xref ref-type="bibr" rid="r10">10</xref></sup>.</p><p>To calculate the misfit of the casts and make comparisons between groups, we measured
the vertical misfit of IE in the MC to verify the reliability of the adaptation and
the value of the initial IE misfit<sup><xref ref-type="bibr" rid="r20">20</xref></sup>. Then, the evaluations also were carried out in testing casts
(TC) of Groups I, II, and III, with IE placed on them, whose respective averages were
subtracted from the initial value obtained for MC in order to obtain the real misfit
value. The implants of MC and related analogues of the tested casts were recorded as
A and B, from left to right, as with the cylinders of IE. Evaluation of misfit was
based on the protocol of tightening the screw only to test the passivity of the
implant structures<sup><xref ref-type="bibr" rid="r15">15</xref></sup>, which had the
grip of a retainer and evaluation of the contrary retainer<sup><xref ref-type="bibr" rid="r15">15</xref></sup> (<xref ref-type="fig" rid="f02">Figure 2</xref>).</p><fig id="f02" orientation="portrait" position="float"><label>Figure 2</label><caption><p>Infrastructure placed on the master cast (MC) (a) and the test cast (TC) (b) to
test the single screw</p></caption><graphic xlink:href="jaos-20-05-0517-g02"></graphic></fig><p>The misfit was measured at 120x magnification in a measuring microscope accurate to
1.0 µm (UHL MM-100-BT, UK), equipped with a digital camera (KC-512NT; Kodo BR
Electronics Ltd., São Paulo, SP, Brazil) and analyzer unit (QC 220-HH Quadra-Check
200; Metronics Inc., Bedford, NH, USA). The casts were placed randomly under the
microscope so that the blind evaluator did not know to which group they belonged. All
casts were evaluated at identical points and cylinders A and B of IE were marked with
a carborundum disk Ø 75x0.2 mm on the handpiece.</p><p>The readings were performed by an examiner on two calibrated points on the buccal (1
and 2) and two in the lingual face (3 and 4), ordered from left to right. The
sequence of assessment was followed by the tightening of the screw in the implant B
with 10 N.cm and measuring the distance in micrometers (µm) of 1-4 points on the
interface of the cylinder to the abutment/analogue interface, identifying the
considered misfit (<xref ref-type="fig" rid="f03">Figure 3</xref>). The same
procedure was then performed for B. Each point was measured three times and the
average value used for the analysis.</p><fig id="f03" orientation="portrait" position="float"><label>Figure 3</label><caption><p>Microscopic image of the misfit generated at the interface of one point</p></caption><graphic xlink:href="jaos-20-05-0517-g03"></graphic></fig></sec><sec><title>Statistical analysis</title><p>Means and standard deviations for each plaster casting technique were calculated and
analyzed by one-way ANOVA to determine whether there were significant differences
between groups, at α=0.05. After ANOVA, data were subjected to Holm-Sidak multiple
comparison test, which identified the p values. The software used was Sigmastat 3.5
(Systat Software, Inc., Chicago, IL, USA).</p></sec></sec><sec sec-type="results"><title>RESULTS</title><p>Data analysis revealed a statistically significant difference between Group III as
compared to Groups I and II (p<0.001) (<xref ref-type="fig" rid="f04">Figure
4</xref>). This means that the technique of casting the plaster with a portable vibrator
produces a smaller misfit between cylinders of implant-supported dentures and their
respective analogues in comparison with the conventional techniques for casting
plaster.</p><fig id="f04" orientation="portrait" position="float"><label>Figure 4</label><caption><p>Means and standard deviations(SD) of the misfit (μm) for the three groups.
*statistically significant difference in comparison with the other groups
(p<0.05)</p></caption><graphic xlink:href="jaos-20-05-0517-g04"></graphic></fig></sec><sec sec-type="discussion"><title>DISCUSSION</title><p>For the construction of a fixed partial denture on implants, several steps must be
followed to reduce errors and obtain a clinically acceptable product. According to
dental knowledge, the larger the number of pontics and retainers in prosthesis, the
greater the chances of mismatch. Since the installation of the abutment to the working
model, there are countless chances of errors<sup><xref ref-type="bibr" rid="r02">2</xref>,<xref ref-type="bibr" rid="r05">5</xref>-<xref ref-type="bibr" rid="r07">7</xref>,<xref ref-type="bibr" rid="r11">11</xref>,<xref ref-type="bibr" rid="r18">18</xref></sup>. Also, the fact that the analogues are screwed to the
implant makes them susceptible to displacement, especially during vibration of plaster
during pouring.</p><p>This work aimed to check the effectiveness of a new portable vibrator on the plaster
pouring of implant-supported dentures, also to verify if this device reduces the
possibility of misfit between cylinders of implant-supported dentures and their
respective analogues. The results of the present work showed that the portable vibrator
led to lower misfit values between cylinders of implant-supported dentures and their
respective analogues when compared to conventional vibrator. A minimum misfit was found
when using the new vibrator, but the "perfect" adaptation is almost impossible to
reach<sup><xref ref-type="bibr" rid="r20">20</xref></sup>.</p><p>Extrapolating to clinical results of acceptable misfit of an implant-supported
prosthesis, the literature<sup><xref ref-type="bibr" rid="r03">3</xref>,<xref ref-type="bibr" rid="r16">16</xref></sup> is unable to show an ideal value of
adjustment that will not jeopardize the entire system for prosthetic reconstruction.
According to Tossi<sup><xref ref-type="bibr" rid="r16">16</xref></sup> (2010) values of
marginal fit between frameworks to multiple-units are clinically acceptable within 150
µm range<sup><xref ref-type="bibr" rid="r16">16</xref></sup>. Carr<sup><xref ref-type="bibr" rid="r03">3</xref></sup> (1996) in an <italic>in vivo</italic>study on primates verified that there is no statistically significant difference in bone
response around the implants supporting frameworks with 38 µm and 345 µm
misfits<sup><xref ref-type="bibr" rid="r03">3</xref></sup>.</p><p>According to literature<sup><xref ref-type="bibr" rid="r01">1</xref>,<xref ref-type="bibr" rid="r04">4</xref>,<xref ref-type="bibr" rid="r12">12</xref></sup>the marginal misfit can be influenced by the technique<sup><xref ref-type="bibr" rid="r01">1</xref></sup> and by the material<sup><xref ref-type="bibr" rid="r04">4</xref>,<xref ref-type="bibr" rid="r12">12</xref></sup> used to fabricate the
frameworks. However, this research suggests that the vibration is also an important
factor at this point, reminding that it refers to just one of many steps that are
required to get a prosthetic piece. During the other steps required to complete
prosthesis fabrication, such as firing porcelain several times and finishing<sup><xref ref-type="bibr" rid="r13">13</xref></sup> done by a laboratory technician, misfit
values will be further enhanced, thus emphasizing the importance of using laboratory
techniques and devices that decrease the possibility of distortion in the final
piece.</p><p>The new portable vibrator not only contributes to decrease the misfit, but also has the
advantage of being a small, soundless and low-cost device.</p></sec><sec sec-type="conclusions"><title>CONCLUSION</title><p>The casting technique using the portable vibrator allowed a smaller misfit between the
cylinders of implant-supported dentures and their respective analogues than the
conventional plaster vibrator.</p></sec></body><back><ack><sec><title>ACKNOWLEDGMENTS</title><p>The author would like to thank Dr. Guilherme Elias Pessanha Henriques and Dr. Mauru
Antônio Arruda Nóbilo, Professors of Dentistry at the University of Campinas, SP,
Brazil for his contribution and support to this work.</p></sec></ack><ref-list><title>REFERENCES</title><ref id="r01"><label>1</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Barbosa</surname><given-names>GA</given-names></name><name><surname>Neves</surname><given-names>FD</given-names></name><name><surname>Mattos</surname><given-names>MG</given-names></name><name><surname>Rodrigues</surname><given-names>RC</given-names></name><name><surname>Ribeiro</surname><given-names>RF</given-names></name></person-group><article-title>Implant/abutment vertical misfit of one-piece cast frameworks made
with different materials</article-title><source>Braz Dent J</source><year>2010</year><volume>21</volume><fpage>515</fpage><lpage>519</lpage><pub-id pub-id-type="pmid">21271041</pub-id></element-citation></ref><ref id="r02"><label>2</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Barret</surname><given-names>MG</given-names></name><name><surname>Rijk</surname><given-names>WG</given-names></name><name><surname>Burgess</surname><given-names>JO</given-names></name></person-group><article-title>The accuracy of six impression techniques for osseointegrated
implants</article-title><source>J Prosthodont</source><year>1993</year><volume>2</volume><fpage>275</fpage><lpage>282</lpage></element-citation></ref><ref id="r03"><label>3</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Carr</surname><given-names>AB</given-names></name><name><surname>Gerard</surname><given-names>DA</given-names></name><name><surname>Larsen</surname><given-names>PE</given-names></name></person-group><article-title>The response of bone in primates around unloaded dental implants
supporting prostheses with different levels of fit</article-title><source>J Prosthet Dent</source><year>1996</year><volume>76</volume><fpage>500</fpage><lpage>509</lpage><pub-id pub-id-type="pmid">8933440</pub-id></element-citation></ref><ref id="r04"><label>4</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Castilio</surname><given-names>D</given-names></name><name><surname>Pedreira</surname><given-names>AP</given-names></name><name><surname>Rossetti</surname><given-names>PH</given-names></name><name><surname>Rossetti</surname><given-names>LM</given-names></name><name><surname>Bonachela</surname><given-names>WC</given-names></name></person-group><article-title>The influence of screw type, alloy and cylinder position on the
marginal fit of implant frameworks before and after laser welding</article-title><source>J Appl Oral Sci</source><year>2006</year><volume>14</volume><fpage>77</fpage><lpage>81</lpage><pub-id pub-id-type="pmid">19089035</pub-id></element-citation></ref><ref id="r05"><label>5</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Christensen</surname><given-names>JG</given-names></name></person-group><article-title>What category of impression material is best for your
practice?</article-title><source>J Am Dent Assoc</source><year>1997</year><volume>128</volume><fpage>1026</fpage><lpage>1028</lpage><pub-id pub-id-type="pmid">9231610</pub-id></element-citation></ref><ref id="r06"><label>6</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Del'Acqua MA</surname></name><name><surname>Arioli-Filho</surname><given-names>JN</given-names></name><name><surname>Campagnoni</surname><given-names>MA</given-names></name><name><surname>Mollo</surname><given-names>FA</given-names><suffix>Jr</suffix></name></person-group><article-title>Accuracy of impression and pouring techniques for an implantsupported
prosthesis</article-title><source>Int J Oral Maxillofac Implants</source><year>2008</year><volume>23</volume><fpage>226</fpage><lpage>236</lpage><pub-id pub-id-type="pmid">18548918</pub-id></element-citation></ref><ref id="r07"><label>7</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Hsu</surname><given-names>CC</given-names></name><name><surname>Millstein</surname><given-names>PL</given-names></name><name><surname>Stein</surname><given-names>RS</given-names></name></person-group><article-title>A comparative analysis of the accuracy of implant transfer
techniques</article-title><source>J Prosthet Dent</source><year>1993</year><volume>69</volume><fpage>588</fpage><lpage>593</lpage><pub-id pub-id-type="pmid">8320644</pub-id></element-citation></ref><ref id="r08"><label>8</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Inturregui</surname><given-names>JA</given-names></name><name><surname>Aquilino</surname><given-names>SA</given-names></name><name><surname>Ryther</surname><given-names>JS</given-names></name><name><surname>Lund</surname><given-names>PS</given-names></name></person-group><article-title>Evaluation of three techniques for osseointegrated oral
implants</article-title><source>J Prosthet Dent</source><year>1993</year><volume>69</volume><fpage>503</fpage><lpage>509</lpage><pub-id pub-id-type="pmid">8483130</pub-id></element-citation></ref><ref id="r09"><label>9</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Jemt</surname><given-names>T</given-names></name></person-group><article-title><italic>In vivo</italic> measurements of precision of fit involving implant-supported
prostheses in the edentulous jaw</article-title><source>Int J Oral Maxillofac Implants</source><year>1996</year><volume>11</volume><fpage>151</fpage><lpage>158</lpage><pub-id pub-id-type="pmid">8666445</pub-id></element-citation></ref><ref id="r10"><label>10</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Jemt</surname><given-names>T</given-names></name><name><surname>Lindén</surname><given-names>B</given-names></name></person-group><article-title>Fixed implant-supported prostheses with welded titanium
frameworks</article-title><source>Int J Periodontics Restorative Dent</source><year>1992</year><volume>12</volume><fpage>177</fpage><lpage>184</lpage><pub-id pub-id-type="pmid">1363939</pub-id></element-citation></ref><ref id="r11"><label>11</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Luthardt</surname><given-names>RG</given-names></name><name><surname>Walter</surname><given-names>MH</given-names></name><name><surname>Weber</surname><given-names>A</given-names></name><name><surname>Koch</surname><given-names>R</given-names></name><name><surname>Rudolph</surname><given-names>H</given-names></name></person-group><article-title>Clinical parameters influencing the accuracy of 1- and 2-stage
impressions: a randomized controlled trial</article-title><source>Int J Prosthodont</source><year>2008</year><volume>21</volume><fpage>322</fpage><lpage>327</lpage><pub-id pub-id-type="pmid">18717091</pub-id></element-citation></ref><ref id="r12"><label>12</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Moraes</surname><given-names>LM</given-names></name><name><surname>Rossetti</surname><given-names>PH</given-names></name><name><surname>Rossetti</surname><given-names>LM</given-names></name><name><surname>Pedreira</surname><given-names>AP</given-names></name><name><surname>Valle</surname><given-names>AL</given-names></name><name><surname>Bonachela</surname><given-names>WC</given-names></name></person-group><article-title>Marginal fit at cylinder-abutment interface before and after
overcasting procedure</article-title><source>J Appl Oral Sci</source><year>2005</year><volume>13</volume><fpage>366</fpage><lpage>371</lpage><pub-id pub-id-type="pmid">20865221</pub-id></element-citation></ref><ref id="r13"><label>13</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Naveen</surname><given-names>HC</given-names></name><name><surname>Pillai</surname><given-names>LK</given-names></name><name><surname>Porwal</surname><given-names>A</given-names></name><name><surname>Nadiger</surname><given-names>RK</given-names></name><name><surname>Guttal</surname><given-names>SS</given-names></name></person-group><article-title>Effect of porcelain-firing cycles and surface finishing on the
marginal discrepancy of titanium copings</article-title><source>J Prosthodont</source><year>2011</year><volume>20</volume><fpage>101</fpage><lpage>105</lpage><pub-id pub-id-type="pmid">21261776</pub-id></element-citation></ref><ref id="r14"><label>14</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Podshadley</surname><given-names>AG</given-names></name><name><surname>Dilts</surname><given-names>WE</given-names></name><name><surname>Neiman</surname><given-names>R</given-names></name><name><surname>Sawyer</surname><given-names>HF</given-names></name></person-group><article-title>Accuracy of a mercaptan rubber impression technique using a stock
tray</article-title><source>J Am Dent Assoc</source><year>1971</year><volume>83</volume><fpage>1303</fpage><lpage>1308</lpage><pub-id pub-id-type="pmid">4940403</pub-id></element-citation></ref><ref id="r15"><label>15</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Sartori</surname><given-names>IA</given-names></name><name><surname>Ribeiro</surname><given-names>RF</given-names></name><name><surname>Franscischone</surname><given-names>CE</given-names></name><name><surname>Mattos</surname><given-names>MG</given-names></name></person-group><article-title><italic>In vitro</italic> comparative analysis of the fit of gold alloy or commercially
pure titanium implant-supported prostheses before and after
electroerosion</article-title><source>J Prosthet Dent</source><year>2004</year><volume>92</volume><fpage>132</fpage><lpage>138</lpage><pub-id pub-id-type="pmid">15295321</pub-id></element-citation></ref><ref id="r16"><label>16</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Tossi</surname><given-names>R</given-names></name><name><surname>Falcão-Filho</surname><given-names>H</given-names></name><name><surname>Aguiar Júnior</surname><given-names>FA</given-names></name><name><surname>Rodrigues</surname><given-names>RC</given-names></name><name><surname>Mattos</surname><given-names>MG</given-names></name><name><surname>Ribeiro</surname><given-names>RF</given-names></name></person-group><article-title>Modified section method for laser-welding of ill-fitting cp Ti and
Ni-Cr alloy one-piece cast implant-supported frameworks</article-title><source>J Oral Rehabil</source><year>2010</year><volume>37</volume><fpage>359</fpage><lpage>363</lpage><pub-id pub-id-type="pmid">20149062</pub-id></element-citation></ref><ref id="r17"><label>17</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Waskewicz</surname><given-names>GA</given-names></name><name><surname>Ostrowski</surname><given-names>JS</given-names></name><name><surname>Parks</surname><given-names>VJ</given-names></name></person-group><article-title>Photoelastic analysis of stress distribution transmitted from a fixed
prosthesis attached to osseointegrated implants</article-title><source>Int J Oral Maxillofac Implants</source><year>1994</year><volume>9</volume><fpage>405</fpage><lpage>411</lpage></element-citation></ref><ref id="r18"><label>18</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Wee</surname><given-names>AG</given-names></name></person-group><article-title>Comparison of impression materials for direct multiimplant
impressions</article-title><source>J Prosthet Dent</source><year>2000</year><volume>83</volume><fpage>323</fpage><lpage>331</lpage><pub-id pub-id-type="pmid">10709042</pub-id></element-citation></ref><ref id="r19"><label>19</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Wenz</surname><given-names>HJ</given-names></name><name><surname>Hertrampf</surname><given-names>K</given-names></name></person-group><article-title>Accuracy of impressions and casts using different implant impression
techniques in a multi-implant system with an internal hex
connection</article-title><source>Int J Oral Maxillofac Implants</source><year>2008</year><volume>23</volume><fpage>39</fpage><lpage>47</lpage><pub-id pub-id-type="pmid">18416411</pub-id></element-citation></ref><ref id="r20"><label>20</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Yanase</surname><given-names>RT</given-names></name><name><surname>Binon</surname><given-names>PP</given-names></name><name><surname>Jemt</surname><given-names>T</given-names></name><name><surname>Gulbransen</surname><given-names>HJ</given-names></name><name><surname>Parel</surname><given-names>S</given-names></name></person-group><article-title>How do you test a cast framework fit for a full-arch fixed
implant-supported prosthesis</article-title><source>Int J Oral Maxillofac Implants</source><year>1994</year><volume>9</volume><fpage>469</fpage><lpage>474</lpage></element-citation></ref></ref-list></back></pmc></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Santé/explor/EdenteV1/Data/Pmc/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000610 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Pmc/Corpus/biblio.hfd -nk 000610 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Santé
|area= EdenteV1
|flux= Pmc
|étape= Corpus
|type= RBID
|clé= PMC:3881794
|texte= A new portable vibrator for plaster pouring: effect on the marginal fit
at cylinder-abutment
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Pmc/Corpus/RBID.i -Sk "pubmed:23138736" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Pmc/Corpus/biblio.hfd \
| NlmPubMed2Wicri -a EdenteV1
| This area was generated with Dilib version V0.6.33. |  |