Semirigid Cantilever Extension System for Splinting Implants: A Clinical Report
Identifieur interne : 000487 ( Pmc/Corpus ); précédent : 000486; suivant : 000488Semirigid Cantilever Extension System for Splinting Implants: A Clinical Report
Auteurs : Raissa Micaella Marcello Machado ; Luciana De Rezende Pinto ; Otacílio Luiz Chagas Júnior ; Fernanda FaotSource :
- Case Reports in Dentistry [ 2090-6447 ] ; 2014.
Abstract
In mandibular edentulous patients, treatment based on immediate loading with rigid splinting in the mandible is well accepted; however, it is cost and time dependent, which sometimes limits this type of rehabilitation. To overcome these problems, the technique of immediate loading using a semirigid splinting extension system has been developed. Its advantages include low cost, technical feasibility, and reduced clinic time. This clinical report presents the applicability and the predictability of semirigid splinting of implants in the mandibular arch of an edentulous patient using a
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DOI: 10.1155/2014/192974
PubMed: 25161775
PubMed Central: 4139086
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Semirigid Cantilever Extension System for Splinting Implants: A Clinical Report</title><author><name sortKey="Machado, Raissa Micaella Marcello" sort="Machado, Raissa Micaella Marcello" uniqKey="Machado R" first="Raissa Micaella Marcello" last="Machado">Raissa Micaella Marcello Machado</name><affiliation><nlm:aff id="I1">Graduate Program in Dentistry, Prosthodontics Area, School of Dentistry, Federal University of Pelotas (UFPEL), Gonçalves Chaves Street 457, 96015-560 Pelotas, RS, Brazil</nlm:aff></affiliation></author><author><name sortKey="Pinto, Luciana De Rezende" sort="Pinto, Luciana De Rezende" uniqKey="Pinto L" first="Luciana De Rezende" last="Pinto">Luciana De Rezende Pinto</name><affiliation><nlm:aff id="I2">Department of Restorative Dentistry-Prosthodontics Area, School of Dentistry, Federal University of Pelotas-UFPEL, Gonçalves Chaves Street 457, 96015-560 Pelotas, RS, Brazil</nlm:aff></affiliation></author><author><name sortKey="Chagas Junior, Otacilio Luiz" sort="Chagas Junior, Otacilio Luiz" uniqKey="Chagas Junior O" first="Otacílio Luiz" last="Chagas Júnior">Otacílio Luiz Chagas Júnior</name><affiliation><nlm:aff id="I3">Department of Oral and Maxillofacial Surgery and Maxillofacial Prosthodontics, School of Dentistry, Federal University of Pelotas-UFPEL, Rua Gonçalves Chaves 457, 96015-560 Pelotas, RS, Brazil</nlm:aff></affiliation></author><author><name sortKey="Faot, Fernanda" sort="Faot, Fernanda" uniqKey="Faot F" first="Fernanda" last="Faot">Fernanda Faot</name><affiliation><nlm:aff id="I2">Department of Restorative Dentistry-Prosthodontics Area, School of Dentistry, Federal University of Pelotas-UFPEL, Gonçalves Chaves Street 457, 96015-560 Pelotas, RS, Brazil</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">25161775</idno><idno type="pmc">4139086</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4139086</idno><idno type="RBID">PMC:4139086</idno><idno type="doi">10.1155/2014/192974</idno><date when="2014">2014</date><idno type="wicri:Area/Pmc/Corpus">000487</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000487</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Semirigid Cantilever Extension System for Splinting Implants: A Clinical Report</title><author><name sortKey="Machado, Raissa Micaella Marcello" sort="Machado, Raissa Micaella Marcello" uniqKey="Machado R" first="Raissa Micaella Marcello" last="Machado">Raissa Micaella Marcello Machado</name><affiliation><nlm:aff id="I1">Graduate Program in Dentistry, Prosthodontics Area, School of Dentistry, Federal University of Pelotas (UFPEL), Gonçalves Chaves Street 457, 96015-560 Pelotas, RS, Brazil</nlm:aff></affiliation></author><author><name sortKey="Pinto, Luciana De Rezende" sort="Pinto, Luciana De Rezende" uniqKey="Pinto L" first="Luciana De Rezende" last="Pinto">Luciana De Rezende Pinto</name><affiliation><nlm:aff id="I2">Department of Restorative Dentistry-Prosthodontics Area, School of Dentistry, Federal University of Pelotas-UFPEL, Gonçalves Chaves Street 457, 96015-560 Pelotas, RS, Brazil</nlm:aff></affiliation></author><author><name sortKey="Chagas Junior, Otacilio Luiz" sort="Chagas Junior, Otacilio Luiz" uniqKey="Chagas Junior O" first="Otacílio Luiz" last="Chagas Júnior">Otacílio Luiz Chagas Júnior</name><affiliation><nlm:aff id="I3">Department of Oral and Maxillofacial Surgery and Maxillofacial Prosthodontics, School of Dentistry, Federal University of Pelotas-UFPEL, Rua Gonçalves Chaves 457, 96015-560 Pelotas, RS, Brazil</nlm:aff></affiliation></author><author><name sortKey="Faot, Fernanda" sort="Faot, Fernanda" uniqKey="Faot F" first="Fernanda" last="Faot">Fernanda Faot</name><affiliation><nlm:aff id="I2">Department of Restorative Dentistry-Prosthodontics Area, School of Dentistry, Federal University of Pelotas-UFPEL, Gonçalves Chaves Street 457, 96015-560 Pelotas, RS, Brazil</nlm:aff></affiliation></author></analytic><series><title level="j">Case Reports in Dentistry</title><idno type="ISSN">2090-6447</idno><idno type="eISSN">2090-6455</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>In mandibular edentulous patients, treatment based on immediate loading with rigid splinting in the mandible is well accepted; however, it is cost and time dependent, which sometimes limits this type of rehabilitation. To overcome these problems, the technique of immediate loading using a semirigid splinting extension system has been developed. Its advantages include low cost, technical feasibility, and reduced clinic time. This clinical report presents the applicability and the predictability of semirigid splinting of implants in the mandibular arch of an edentulous patient using a <italic>distal extension bar prosthesis system.</italic></p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Popper, Ha" uniqKey="Popper H">HA Popper</name></author><author><name sortKey="Popper, Mj" uniqKey="Popper M">MJ Popper</name></author><author><name sortKey="Popper, Jp" uniqKey="Popper J">JP Popper</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Ostman, P" uniqKey="Ostman P">P Östman</name></author><author><name sortKey="Hellman, M" uniqKey="Hellman M">M Hellman</name></author><author><name sortKey="Sennerby, L" uniqKey="Sennerby L">L Sennerby</name></author><author><name sortKey="Wennerberg, A" uniqKey="Wennerberg A">A Wennerberg</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Lazzara, Rj" uniqKey="Lazzara R">RJ Lazzara</name></author><author><name sortKey="Testori, T" uniqKey="Testori T">T Testori</name></author><author><name sortKey="Meltzer, A" uniqKey="Meltzer A">A Meltzer</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Lee, Hj" uniqKey="Lee H">HJ Lee</name></author><author><name sortKey="De Mattias Sartori, Ip" uniqKey="De Mattias Sartori I">IP De Mattias Sartori</name></author><author><name sortKey="Alc Ntara, Pr" uniqKey="Alc Ntara P">PR Alcĝntara</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Gapski, R" uniqKey="Gapski R">R Gapski</name></author><author><name sortKey="Wang, H" uniqKey="Wang H">H Wang</name></author><author><name sortKey="Mascarenhas, P" uniqKey="Mascarenhas P">P Mascarenhas</name></author><author><name sortKey="Lang, Np" uniqKey="Lang N">NP Lang</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Javed, F" uniqKey="Javed F">F Javed</name></author><author><name sortKey="Romanos, Ge" uniqKey="Romanos G">GE Romanos</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Esposito, M" uniqKey="Esposito M">M Esposito</name></author><author><name sortKey="Grusovin, Mg" uniqKey="Grusovin M">MG Grusovin</name></author><author><name sortKey="Maghaireh, H" uniqKey="Maghaireh H">H Maghaireh</name></author><author><name sortKey="Worthington, Hv" uniqKey="Worthington H">HV Worthington</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Papaspyridakos, P" uniqKey="Papaspyridakos P">P Papaspyridakos</name></author><author><name sortKey="Chen, Cj" uniqKey="Chen C">CJ Chen</name></author><author><name sortKey="Chuang, Sk" uniqKey="Chuang S">SK Chuang</name></author><author><name sortKey="Weber, Hp" uniqKey="Weber H">HP Weber</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Mombelli, A" uniqKey="Mombelli A">A Mombelli</name></author><author><name sortKey="Van Oosten, Ma" uniqKey="Van Oosten M">MA van Oosten</name></author><author><name sortKey="Schurch, E" uniqKey="Schurch E">E Schürch</name></author><author><name sortKey="Land, Np" uniqKey="Land N">NP Land</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Teixeira, Mf" uniqKey="Teixeira M">MF Teixeira</name></author><author><name sortKey="Ramalho, Sa" uniqKey="Ramalho S">SA Ramalho</name></author><author><name sortKey="De Mattias Sartori, Ia" uniqKey="De Mattias Sartori I">IA de Mattias Sartori</name></author><author><name sortKey="Lehmann, Rb" uniqKey="Lehmann R">RB Lehmann</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">Case Rep Dent</journal-id><journal-id journal-id-type="iso-abbrev">Case Rep Dent</journal-id><journal-id journal-id-type="publisher-id">CRID</journal-id><journal-title-group><journal-title>Case Reports in Dentistry</journal-title></journal-title-group><issn pub-type="ppub">2090-6447</issn><issn pub-type="epub">2090-6455</issn><publisher><publisher-name>Hindawi Publishing Corporation</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">25161775</article-id><article-id pub-id-type="pmc">4139086</article-id><article-id pub-id-type="doi">10.1155/2014/192974</article-id><article-categories><subj-group subj-group-type="heading"><subject>Case Report</subject></subj-group></article-categories><title-group><article-title>Semirigid Cantilever Extension System for Splinting Implants: A Clinical Report</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Machado</surname><given-names>Raissa Micaella Marcello</given-names></name><xref ref-type="aff" rid="I1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Pinto</surname><given-names>Luciana de Rezende</given-names></name><xref ref-type="aff" rid="I2"><sup>2</sup></xref></contrib><contrib contrib-type="author"><name><surname>Chagas Júnior</surname><given-names>Otacílio Luiz</given-names></name><xref ref-type="aff" rid="I3"><sup>3</sup></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid" authenticated="false">http://orcid.org/0000-0001-6889-7238</contrib-id><name><surname>Faot</surname><given-names>Fernanda</given-names></name><xref ref-type="aff" rid="I2"><sup>2</sup></xref><xref ref-type="corresp" rid="cor1">*</xref></contrib></contrib-group><aff id="I1"><sup>1</sup>Graduate Program in Dentistry, Prosthodontics Area, School of Dentistry, Federal University of Pelotas (UFPEL), Gonçalves Chaves Street 457, 96015-560 Pelotas, RS, Brazil</aff><aff id="I2"><sup>2</sup>Department of Restorative Dentistry-Prosthodontics Area, School of Dentistry, Federal University of Pelotas-UFPEL, Gonçalves Chaves Street 457, 96015-560 Pelotas, RS, Brazil</aff><aff id="I3"><sup>3</sup>Department of Oral and Maxillofacial Surgery and Maxillofacial Prosthodontics, School of Dentistry, Federal University of Pelotas-UFPEL, Rua Gonçalves Chaves 457, 96015-560 Pelotas, RS, Brazil</aff><author-notes><corresp id="cor1">*Fernanda Faot: <email>fernanda.faot@gmail.com</email></corresp><fn fn-type="other"><p>Academic Editor: Jamil A. Shibli</p></fn></author-notes><pub-date pub-type="ppub"><year>2014</year></pub-date><pub-date pub-type="epub"><day>5</day><month>8</month><year>2014</year></pub-date><volume>2014</volume><elocation-id>192974</elocation-id><history><date date-type="received"><day>22</day><month>4</month><year>2014</year></date><date date-type="rev-recd"><day>15</day><month>7</month><year>2014</year></date><date date-type="accepted"><day>16</day><month>7</month><year>2014</year></date></history><permissions><copyright-statement>Copyright © 2014 Raissa Micaella Marcello Machado et al.</copyright-statement><copyright-year>2014</copyright-year><license xlink:href="https://creativecommons.org/licenses/by/3.0/"><license-p>This is an open access article distributed under 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><p>In mandibular edentulous patients, treatment based on immediate loading with rigid splinting in the mandible is well accepted; however, it is cost and time dependent, which sometimes limits this type of rehabilitation. To overcome these problems, the technique of immediate loading using a semirigid splinting extension system has been developed. Its advantages include low cost, technical feasibility, and reduced clinic time. This clinical report presents the applicability and the predictability of semirigid splinting of implants in the mandibular arch of an edentulous patient using a <italic>distal extension bar prosthesis system.</italic></p></abstract></article-meta></front><body><sec id="sec1"><title>1. Introduction</title><p>With advances in dental implant geometry and surface texture, prosthetic connections, and simplified surgical techniques, the concept of immediate and early loading has gained credibility and predictability. However, the main guiding factors in the success of implant-supported prostheses in the edentulous mandible are the implant primary stability and the need for splinting the implants, through a rigid metal infrastructure, to prevent micromotion of the implants and provide ideal conditions for osseointegration [<xref rid="B1" ref-type="bibr">1</xref>].</p><p>However, the laboratory logistics required to implement the standard protocol, the financial costs involved in this type of rehabilitation, and the need for rapid processing [<xref rid="B2" ref-type="bibr">2</xref>] limit the scope of rehabilitative modality, for both the professional and the patient. In order to remedy these difficulties, prefabricated bars have been proposed for use with<italic> hybrid prostheses</italic> [<xref rid="B3" ref-type="bibr">3</xref>]. This alternative embodies an implant-supported mandibular prosthesis that has enabled the application of immediate or early loading, as shown by a system of semirigid splinting composed of prefabricated metallic distal extensions with the addition of conventional acrylic resin, called<italic> distal extension bar prosthesis system </italic>(DEBPS) [<xref rid="B4" ref-type="bibr">4</xref>].</p><p>Despite the use of semirigid splinting, no studies in the literature—even those discussing fabrication tips and predictability of this treatment modality—indicate the maximum time that such splinting can be used. Only one study conducted by Lee et al. [<xref rid="B4" ref-type="bibr">4</xref>] used this system in a sample of fifteen edentulous patients with only 8-month follow-up. Based on this clinical study, the only specific prerequisite for the adoption of this technique is the need to obtain primary stability during implant installation if the immediate or early loading is planned or desired [<xref rid="B4" ref-type="bibr">4</xref>–<xref rid="B6" ref-type="bibr">6</xref>]. This clinical report describes the predictability of semirigid implant splinting in the rehabilitation of an edentulous mandible by means of a DEBP, with an 18-month follow-up.</p></sec><sec id="sec2"><title>2. Case Report</title><p>Patient V.E.C., 61-year-old female in a good general health was referred to the Dental School - Prosthodontics Unit of the Federal University of Pelotas for maxillary and mandibular oral rehabilitation. During the prosthesis evaluation it was observed a maxillary complete denture in fair condition however, presenting a good retention, stability and support. In the mandibular arch, the patient had a removable partial denture without retention or stability, which was the patient's main complaints, resulting in difficulties in chewing, in speech, and in her social life. <xref ref-type="table" rid="tab1"> Table 1</xref> presents the treatment steps that were taken throughout the patient rehabilitation. Following the interview, clinical (<xref ref-type="fig" rid="fig1">Figure 1(a)</xref>) and radiographic examinations were performed (Figures <xref ref-type="fig" rid="fig1">1(b)</xref>-<xref ref-type="fig" rid="fig1">1(c)</xref>). It was observed that the level of posterior mandibular alveolar bone absorption would allow only the use of short implants, requiring an unfavorable crown/implant ratio. Therefore, it was decided on the installation of 5 dental implants (Titamax Cortical with Morse Taper, 3.75 × 13 mm, Neodent Osseointegrated Implants, Curitiba, PR, Brazil) in the interforaminal region of the mandible with the use of DEBPS, mainly because of the economical limitations of the patient.</p><p>The presurgical phase involved all the steps required to perform a complete denture with especial attention to the maxillomandibular relation record with a correct establishment of the vertical dimension of occlusion (Figures <xref ref-type="fig" rid="fig2">2</xref> and <xref ref-type="fig" rid="fig3">3</xref>). The remaining teeth were extracted (no. 21, no. 22, no. 23, no. 24, and no. 25) and multifunctional surgical guide (<xref ref-type="fig" rid="fig4">Figure 4</xref>) was used during the drilling sequence, guiding the osteoplasty into correct parallel positioning of the implants (<xref ref-type="fig" rid="fig5">Figure 5</xref>). An insertion torque of up to 40 N<italic>·</italic>cm guaranteed the primary implant stability. Prosthetic abutments (CM Mini Conical Abutment, Neodent) were installed and a postsurgical panoramic radiography was performed (<xref ref-type="fig" rid="fig6">Figure 6</xref>). Prosthetic procedures began 15 days after the surgery 6 (<xref ref-type="fig" rid="fig7">Figure 7</xref>) with the installation of one semi-rigid cantilever extension system with titanium bars placed in the 2 distal abutment cylinders (<xref ref-type="fig" rid="fig8">Figure 8</xref>). The choice of waiting for this healing time of 2 weeks was to promote better soft tissue positioning and the reposition of the floor of the mouth, which presented a high muscle insertion. These anatomical conditions did not permit installing the DEBPS at the time of the surgery. However, the immediate loading was not discarded. According to Esposito et al. [<xref rid="B7" ref-type="bibr">7</xref>], 3 loading protocols are well established in the literature and are dependent of implants primary stability and the bone properties (quality and quantity): immediate (within 1 week); early (from 1 week to 2 months); or conventional (after 2 months). A high value of insertion torque (at least 35 Ncm) seems to be one of the prerequisites for a successful immediate/loading procedure [<xref rid="B7" ref-type="bibr">7</xref>]. If resonance frequency analysis was used to assess the primary stability, an ISQ value of at least 60 should be obtained [<xref rid="B8" ref-type="bibr">8</xref>]. Conventional loading is recommended in the following situations: (i) primary implant stability could not be achieved, (ii) type IV bone, (iii) patient with parafunctional habits as bruxism or clenching, (iv) alveolar ridge augmentation procedures and (v) compromised bone as observed in osteoporosis and diabetes.</p><p>The lingual surface of the mandibular prosthesis corresponding to the location of each cylinder was adjusted (<xref ref-type="fig" rid="fig9">Figure 9</xref>). To isolate the field and prevent the flow of acrylic resin over the prosthetic abutment and peri-implant mucosa, a rubber dam was adapted over the cylinders (<xref ref-type="fig" rid="fig10">Figure 10</xref>). After the prosthesis was repositioned in the mouth, the distal extensions were fixed to the cylinders with acrylic resin (New Truliner, Bosworth Company, Ill, USA). The length of the distal cantilever in the mandibular implant-supported prosthesis was reduced by the elimination of the distal portion from the first molar. Mandibular denture after capturing the titanium cylinder and distal bar had hygienic pontics carved between the implants (Figures <xref ref-type="fig" rid="fig11">11(a)</xref>, <xref ref-type="fig" rid="fig11">11(b)</xref>, and <xref ref-type="fig" rid="fig11">11(c)</xref>) to promote better hygiene of the peri-implant soft tissue and occlusal adjustments were performed (Figures <xref ref-type="fig" rid="fig12">12</xref> and <xref ref-type="fig" rid="fig13">13</xref>). After 7 days, the patient underwent radiography for the final clinical evaluation (<xref ref-type="fig" rid="fig14">Figure 14</xref>), and follow-ups were performed every 3 months. After 2 years of monitoring, the mandibular implant-supported prosthesis and implants were reassessed to the plaque accumulation and marginal mucosal conditions according to Mombelli et al. [<xref rid="B9" ref-type="bibr">9</xref>] (<xref ref-type="table" rid="tab2">Table 2</xref>). Plaque accumulation around implants could be seen by the naked eye (score 2) (<xref ref-type="fig" rid="fig15">Figure 15</xref>). With all the implants, no occurrence of gingival inflammation around the implants was reported (score 0) nor was there a need for denture repairs due to broken teeth or resin. The integrity of the peri-implant bone was also verified by radiographic examination (<xref ref-type="fig" rid="fig16">Figure 16</xref>).</p></sec><sec id="sec3"><title>3. Discussion</title><p>There are several benefits of immediate or early loading by semirigid splinting, for example, eliminating the need for maintaining or replacing a removable prosthesis that may cause patient discomfort or postoperative pain, slow the healing process, or cause premature exposure of the implants. Repeated injuries due to lack of retention or stability could ultimately result in an increased number of visits required for maintaining the prosthesis. Emotional, aesthetic, and functional benefits are also promoted for the patient who would otherwise be toothless.</p><p>Improving healing facilitates the formation of soft tissue [<xref rid="B3" ref-type="bibr">3</xref>, <xref rid="B4" ref-type="bibr">4</xref>]. In this case, the option of semirigid splinting was adopted to promote more rapid peri-implant tissue healing and to reposition the floor of the mouth, which had a high muscle insertion. Semirigid splinting systems also enable the use of small accommodation fasteners, which are feasible because of the beneficial micromotion permitted by the absence of metal infrastructures [<xref rid="B3" ref-type="bibr">3</xref>, <xref rid="B4" ref-type="bibr">4</xref>, <xref rid="B10" ref-type="bibr">10</xref>].</p><p>Also, reducing the cost of rehabilitation, even temporarily, makes it available to more people and improves life quality through the restoration of oral function. Another consideration is that this prosthesis might provisionally serve the patient until he or she has the financial resources to subsequently undergo another form of rehabilitation. In addition, an implant-fixed prosthesis without the cast rigid framework could be an option in cases when there is enough time or technical knowledge to fabricate a cast framework within the period recommended for immediate or early loading, this technique would eliminate a gap in treatment options and, at the same time, open the doors to a greater number of practitioners.</p><p>However, in making a decision to use immediate loading with associated semi-rigid splinting, each edentulous patient should be evaluated preoperatively to ensure that he or she meets the clinical criteria that include adequate bone quality (types I, II, or III), sufficient bone height and width, and the ability to achieve adequate anteroposterior distribution during cantilever fabrication [<xref rid="B10" ref-type="bibr">10</xref>]. In cases in which the patient already has a complete denture under conditions acceptable for rehabilitation, it is recommended that, due to the coupling between cylinders and bars held only in the acrylic resin, the technique is restricted to extremely reabsorbed ridges, so that the added thickness of material can supply more rigidity and resistance to the assembly.</p></sec><sec id="sec4"><title>4. Conclusion</title><p>The use of the semirigid distal cantilever extension system for splinting implants is a viable treatment option for rehabilitating edentulous mandibles that meet strict criteria for immediate or early loading.</p></sec></body><back><ack><title>Acknowledgment</title><p>Raissa Micaella Marcello Machado, Luciana de Rezende Pinto, Otacílio Luiz Chagas Júnior, and Fernanda Faot are in Bone Repair Research Group-Osseointegration.</p></ack><sec sec-type="conflict"><title>Conflict of Interests</title><p>The authors declare that there is no conflict of interests regarding the publication of this paper.</p></sec><ref-list><ref id="B1"><label>1</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Popper</surname><given-names>HA</given-names></name><name><surname>Popper</surname><given-names>MJ</given-names></name><name><surname>Popper</surname><given-names>JP</given-names></name></person-group><article-title>The Brånemark 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Mattias Sartori</surname><given-names>IA</given-names></name><name><surname>Lehmann</surname><given-names>RB</given-names></name></person-group><article-title>Finite element analysis of 2 immediate loading systems in edentulous mandible: rigid and semirigid splinting of implants</article-title><source><italic>Implant Dentistry</italic></source><year>2010</year><volume>19</volume><issue>1</issue><fpage>39</fpage><lpage>49</lpage><pub-id pub-id-type="other">2-s2.0-77049102184</pub-id><pub-id pub-id-type="pmid">20147815</pub-id></element-citation></ref></ref-list></back><floats-group><fig id="fig1" orientation="portrait" position="float"><label>Figure 1</label><caption><p>(a) Clinical exam: edentulous maxillary and partially edentulous mandible. (b) Radiographic exam: panoramic radiography. Mandibular height favoring dental installation implants. (c) Radiographic exam: teleradiography. Favorable maxillomandibular relationship to the installation of dental implants and prosthetic rehabilitation treatment.</p></caption><graphic xlink:href="CRID2014-192974.001"></graphic></fig><fig id="fig2" orientation="portrait" position="float"><label>Figure 2</label><caption><p>Evaluation of the reestablished VDO.</p></caption><graphic xlink:href="CRID2014-192974.002"></graphic></fig><fig id="fig3" orientation="portrait" position="float"><label>Figure 3</label><caption><p>New complete dentures.</p></caption><graphic xlink:href="CRID2014-192974.003"></graphic></fig><fig id="fig4" orientation="portrait" position="float"><label>Figure 4</label><caption><p>Surgical guide.</p></caption><graphic xlink:href="CRID2014-192974.004"></graphic></fig><fig id="fig5" orientation="portrait" position="float"><label>Figure 5</label><caption><p>Implant placement.</p></caption><graphic xlink:href="CRID2014-192974.005"></graphic></fig><fig id="fig6" orientation="portrait" position="float"><label>Figure 6</label><caption><p>Panoramic radiography after implants placement.</p></caption><graphic xlink:href="CRID2014-192974.006"></graphic></fig><fig id="fig7" orientation="portrait" position="float"><label>Figure 7</label><caption><p>Prosthetic abutments and peri-implant tissue after the 15th day.</p></caption><graphic xlink:href="CRID2014-192974.007"></graphic></fig><fig id="fig8" orientation="portrait" position="float"><label>Figure 8</label><caption><p>Installation of titanium cylinders and distal bars of cantilever extension system (implants 1 and 5).</p></caption><graphic xlink:href="CRID2014-192974.008"></graphic></fig><fig id="fig9" orientation="portrait" position="float"><label>Figure 9</label><caption><p>Positioning of the lower denture with titanium cylinders and distal bar.</p></caption><graphic xlink:href="CRID2014-192974.009"></graphic></fig><fig id="fig10" orientation="portrait" position="float"><label>Figure 10</label><caption><p>System protection with rubber dam to capture the titanium cylinders and distal bar.</p></caption><graphic xlink:href="CRID2014-192974.010"></graphic></fig><fig id="fig11" orientation="portrait" position="float"><label>Figure 11</label><caption><p>Mandibular denture after capturing the titanium cylinder and distal bar.</p></caption><graphic xlink:href="CRID2014-192974.011"></graphic></fig><fig id="fig12" orientation="portrait" position="float"><label>Figure 12</label><caption><p>Screwed mandibular denture and its relation to the tissues of the buccal floor.</p></caption><graphic xlink:href="CRID2014-192974.012"></graphic></fig><fig id="fig13" orientation="portrait" position="float"><label>Figure 13</label><caption><p>Complete dentures in occlusion.</p></caption><graphic xlink:href="CRID2014-192974.013"></graphic></fig><fig id="fig14" orientation="portrait" position="float"><label>Figure 14</label><caption><p>Panoramic radiography after 7 days of the prosthesis installation.</p></caption><graphic xlink:href="CRID2014-192974.014"></graphic></fig><fig id="fig15" orientation="portrait" position="float"><label>Figure 15</label><caption><p>Clinical aspect of the peri-implant tissue after 2 years of installation.</p></caption><graphic xlink:href="CRID2014-192974.015"></graphic></fig><fig id="fig16" orientation="portrait" position="float"><label>Figure 16</label><caption><p>Radiographic control at 2-year follow-up.</p></caption><graphic xlink:href="CRID2014-192974.016"></graphic></fig><table-wrap id="tab1" orientation="portrait" position="float"><label>Table 1</label><caption><p>Treatment steps.</p></caption><table frame="hsides" rules="groups"><thead><tr><th align="left" rowspan="1" colspan="1">Steps</th><th align="left" rowspan="1" colspan="1">Performed treatments</th><th align="center" rowspan="1" colspan="1">Figure</th></tr></thead><tbody><tr><td align="left" rowspan="1" colspan="1">1</td><td align="left" rowspan="1" colspan="1">Initial phase: patient examination and diagnosis</td><td align="center" rowspan="1" colspan="1">Figures <xref ref-type="fig" rid="fig1">1(a)</xref>, <xref ref-type="fig" rid="fig1">1(b)</xref>, and <xref ref-type="fig" rid="fig1">1(c)</xref></td></tr><tr><td align="left" rowspan="1" colspan="1">2</td><td align="left" rowspan="1" colspan="1">Presurgical phase: assessment of the vertical dimension of occlusion (VDO), evaluation of the reestablished VDO, diagnostic waxing, and new complete denture</td><td align="center" rowspan="1" colspan="1">Figures <xref ref-type="fig" rid="fig2">2</xref> and <xref ref-type="fig" rid="fig3">3</xref></td></tr><tr><td align="left" rowspan="1" colspan="1">3</td><td align="left" rowspan="1" colspan="1">Surgical guide based on maxillomandibular relationship</td><td align="center" rowspan="1" colspan="1"><xref ref-type="fig" rid="fig4">Figure 4</xref></td></tr><tr><td align="left" rowspan="1" colspan="1">4</td><td align="left" rowspan="1" colspan="1">Teeth extraction (no. 21, no. 22, no. 23, no. 24, and no. 25) and implant placement</td><td align="center" rowspan="1" colspan="1"><xref ref-type="fig" rid="fig5">Figure 5</xref></td></tr><tr><td align="left" rowspan="1" colspan="1">5</td><td align="left" rowspan="1" colspan="1">Postsurgical radiography</td><td align="center" rowspan="1" colspan="1"><xref ref-type="fig" rid="fig6">Figure 6</xref></td></tr><tr><td align="left" rowspan="1" colspan="1">6</td><td align="left" rowspan="1" colspan="1">Abutment placement and peri-implant tissue</td><td align="center" rowspan="1" colspan="1"><xref ref-type="fig" rid="fig7">Figure 7</xref></td></tr><tr><td align="left" rowspan="1" colspan="1">7</td><td align="left" rowspan="1" colspan="1">Installation and capture of titanium cylinders and distal bars</td><td align="center" rowspan="1" colspan="1">Figures <xref ref-type="fig" rid="fig8">8</xref>, <xref ref-type="fig" rid="fig9">9</xref>, and <xref ref-type="fig" rid="fig10">10</xref></td></tr><tr><td align="left" rowspan="1" colspan="1">8</td><td align="left" rowspan="1" colspan="1">Mandibular implant-supported prosthesis installation</td><td align="center" rowspan="1" colspan="1">Figures <xref ref-type="fig" rid="fig11">11</xref>, <xref ref-type="fig" rid="fig12">12</xref>, and <xref ref-type="fig" rid="fig13">13</xref></td></tr><tr><td align="left" rowspan="1" colspan="1">9</td><td align="left" rowspan="1" colspan="1">Follow-ups every 3 months and maintenance routine of the implants</td><td align="center" rowspan="1" colspan="1">Figures <xref ref-type="fig" rid="fig14">14</xref>, <xref ref-type="fig" rid="fig15">15</xref>, and <xref ref-type="fig" rid="fig16">16</xref></td></tr></tbody></table></table-wrap><table-wrap id="tab2" orientation="portrait" position="float"><label>Table 2</label><caption><p>Indices used to assess plaque accumulation and marginal mucosal conditions around oral implants according to Mombelli et al. [<xref rid="B9" ref-type="bibr">9</xref>].</p></caption><table frame="hsides" rules="groups"><thead><tr><th align="left" rowspan="1" colspan="1">Indices to assess plaque accumulation</th><th align="center" rowspan="1" colspan="1"> </th></tr></thead><tbody><tr><td align="left" rowspan="1" colspan="1">(0) No detection of plaque</td><td align="center" rowspan="1" colspan="1"> </td></tr><tr><td align="left" rowspan="1" colspan="1">(1) Plaque only recognized by running a probe across the smooth marginal surface of the implant</td><td align="center" rowspan="1" colspan="1"> </td></tr><tr><td align="left" rowspan="1" colspan="1">(2) Plaque can be seen by the naked eye</td><td align="center" rowspan="1" colspan="1"> </td></tr><tr><td align="left" rowspan="1" colspan="1">(3) Abundance of soft matter</td><td align="center" rowspan="1" colspan="1"> </td></tr><tr><td align="center" colspan="2" rowspan="1"><hr></hr></td></tr><tr><td align="left" rowspan="1" colspan="1">Indices to assess marginal mucosal conditions</td><td align="center" rowspan="1" colspan="1"> </td></tr><tr><td align="center" colspan="2" rowspan="1"><hr></hr></td></tr><tr><td align="left" rowspan="1" colspan="1">(0) No bleeding when a periodontal probe is passed along the mucosal margin adjacent to the implant</td><td align="center" rowspan="1" colspan="1"> </td></tr><tr><td align="left" rowspan="1" colspan="1">(1) Isolated bleeding spots visible</td><td align="center" rowspan="1" colspan="1"> </td></tr><tr><td align="left" rowspan="1" colspan="1">(2) Blood forms a confluent red line on mucosal margin</td><td align="center" rowspan="1" colspan="1"> </td></tr><tr><td align="left" rowspan="1" colspan="1">(3) Heavy or profuse bleeding</td><td align="center" rowspan="1" colspan="1"> </td></tr></tbody></table></table-wrap></floats-group></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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