Assessing Double Acid-Etched Implants Submitted to Orthodontic Forces and Used as Prosthetic Anchorages in Partially Edentulous Patients
Identifieur interne : 002145 ( Pmc/Corpus ); précédent : 002144; suivant : 002146Assessing Double Acid-Etched Implants Submitted to Orthodontic Forces and Used as Prosthetic Anchorages in Partially Edentulous Patients
Auteurs : Rugani De Cravero Marta ; Iba Ez Juan CarlosSource :
- The Open Dentistry Journal [ 1874-2106 ] ; 2008.
Abstract
The use of implants as anchorage for orthodontic forces seems to be a good alternative in partially edentulous patients needing orthodontic treatment.
This study is aimed at assessing the performance and behavior of microtextured surface endosseous implants obtained by means of a double acid etching against orthodontic forces, as well as their adequacy to be used first as anchorage and later as fixtures for the definitive prosthesis.
A total of 93 double acid-etched surface parallel wall implants (Osseotite® Implants, Implant Innovations Inc., Palm Beach, Florida, USA) were inserted in 38 partially edentulous patients prior to orthodontic treatment This was carried out by following two-stage surgery protocols in the maxilla as well as in the mandible.
After a healing period of six months for the maxilla and four months for the mandible, the implants were used as anchorage for sliding, compression and traction orthodontic forces between 100 to 200 g by means of Ni-TI springs.
Bone level and Resonance Frequency Analysis (RFA) were measured before and after the introduction of the orthodontics forces.
After removal of the orthodontics appliances, all the implants remained stabile and served as support for prosthetic replacement of missing teeth. The bone level showed no variationeven when a positive difference 0.02 ± 0.38mm was noticed. The RFA scored a significant difference (p≤ 0.03) between the initial Implant Stability Quotient (ISQ) values (66) and the final ones (68).
These findings showed that Osseotite implants were able to support the orthodontic forces applied during this investigation, maintaining osseointegration without significant variation in bone level. Therefore, they can be used to support dental prosthesis once they have been used as orthodontic anchorage under the cited conditions.
Url:
DOI: 10.2174/1874210600802010030
PubMed: 19088880
PubMed Central: 2581540
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Assessing Double Acid-Etched Implants Submitted to Orthodontic Forces and Used as Prosthetic Anchorages in Partially Edentulous Patients</title><author><name sortKey="De Cravero Marta, Rugani" sort="De Cravero Marta, Rugani" uniqKey="De Cravero Marta R" first="Rugani" last="De Cravero Marta">Rugani De Cravero Marta</name><affiliation><nlm:aff id="aff1">Doctor in Dentistry and Assistant Professor of Orthodontics, School of Dentistry, Universidad Nacional de Córdoba, República Argentina</nlm:aff></affiliation></author><author><name sortKey="Carlos, Iba Ez Juan" sort="Carlos, Iba Ez Juan" uniqKey="Carlos I" first="Iba Ez Juan" last="Carlos">Iba Ez Juan Carlos</name><affiliation><nlm:aff id="aff2">Doctor in Dentistry, Private Practice, Obispo Oro 414 Córdoba (5000) República Argentina</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">19088880</idno><idno type="pmc">2581540</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2581540</idno><idno type="RBID">PMC:2581540</idno><idno type="doi">10.2174/1874210600802010030</idno><date when="2008">2008</date><idno type="wicri:Area/Pmc/Corpus">002145</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002145</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Assessing Double Acid-Etched Implants Submitted to Orthodontic Forces and Used as Prosthetic Anchorages in Partially Edentulous Patients</title><author><name sortKey="De Cravero Marta, Rugani" sort="De Cravero Marta, Rugani" uniqKey="De Cravero Marta R" first="Rugani" last="De Cravero Marta">Rugani De Cravero Marta</name><affiliation><nlm:aff id="aff1">Doctor in Dentistry and Assistant Professor of Orthodontics, School of Dentistry, Universidad Nacional de Córdoba, República Argentina</nlm:aff></affiliation></author><author><name sortKey="Carlos, Iba Ez Juan" sort="Carlos, Iba Ez Juan" uniqKey="Carlos I" first="Iba Ez Juan" last="Carlos">Iba Ez Juan Carlos</name><affiliation><nlm:aff id="aff2">Doctor in Dentistry, Private Practice, Obispo Oro 414 Córdoba (5000) República Argentina</nlm:aff></affiliation></author></analytic><series><title level="j">The Open Dentistry Journal</title><idno type="eISSN">1874-2106</idno><imprint><date when="2008">2008</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec sec-type="abstract"><title>Abstract:</title><p>The use of implants as anchorage for orthodontic forces seems to be a good alternative in partially edentulous patients needing orthodontic treatment. </p><p>This study is aimed at assessing the performance and behavior of microtextured surface endosseous implants obtained by means of a double acid etching against orthodontic forces, as well as their adequacy to be used first as anchorage and later as fixtures for the definitive prosthesis.</p></sec><sec sec-type="materials|methods"><title>Materials and Methods:</title><p> A total of 93 double acid-etched surface parallel wall implants (Osseotite® Implants, Implant Innovations Inc., Palm Beach, Florida, USA) were inserted in 38 partially edentulous patients prior to orthodontic treatment This was carried out by following two-stage surgery protocols in the maxilla as well as in the mandible.</p><p>After a healing period of six months for the maxilla and four months for the mandible, the implants were used as anchorage for sliding, compression and traction orthodontic forces between 100 to 200 g by means of Ni-TI springs.</p><p>Bone level and Resonance Frequency Analysis (RFA) were measured before and after the introduction of the orthodontics forces.</p></sec><sec sec-type="results"><title>Results:</title><p> After removal of the orthodontics appliances, all the implants remained stabile and served as support for prosthetic replacement of missing teeth. The bone level showed no variationeven when a positive difference 0.02 ± 0.38mm was noticed. The RFA scored a significant difference (p≤ 0.03) between the initial Implant Stability Quotient (ISQ) values (66) and the final ones (68).</p></sec><sec sec-type="conclusion"><title>Conclusions:</title><p> These findings showed that Osseotite implants were able to support the orthodontic forces applied during this investigation, maintaining osseointegration without significant variation in bone level. Therefore, they can be used to support dental prosthesis once they have been used as orthodontic anchorage under the cited conditions.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct></listBibl></div1></back></TEI><pmc article-type="research-article" xml:lang="EN"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Open Dent J</journal-id><journal-id journal-id-type="publisher-id">TODENTJ</journal-id><journal-title>The Open Dentistry Journal</journal-title><issn pub-type="epub">1874-2106</issn><publisher><publisher-name>Bentham Science Publishers Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">19088880</article-id><article-id pub-id-type="pmc">2581540</article-id><article-id pub-id-type="publisher-id">TODENTJ-2-30</article-id><article-id pub-id-type="doi">10.2174/1874210600802010030</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Assessing Double Acid-Etched Implants Submitted to Orthodontic Forces and Used as Prosthetic Anchorages in Partially Edentulous Patients</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>de Cravero Marta</surname><given-names>Rugani</given-names></name><xref ref-type="aff" rid="aff1">1</xref></contrib><contrib contrib-type="author"><name><surname>Carlos</surname><given-names>Ibañez Juan</given-names></name><xref ref-type="aff" rid="aff2">2</xref><xref ref-type="corresp" rid="cor1">*</xref></contrib></contrib-group><aff id="aff1"><label>1</label>Doctor in Dentistry and Assistant Professor of Orthodontics, School of Dentistry, Universidad Nacional de Córdoba, República Argentina</aff><aff id="aff2"><label>2</label>Doctor in Dentistry, Private Practice, Obispo Oro 414 Córdoba (5000) República Argentina</aff><author-notes><corresp id="cor1"><label>*</label>Address correspondence to this author at the Obispo Oro 414, Cordoba, Argentina; Tel/Fax: 54-351-4680156; E-mail: <email xlink:href="dribanez@ibaimplantes.com">dribanez@ibaimplantes.com</email></corresp></author-notes><pub-date pub-type="epub"><day>8</day><month>3</month><year>2008</year></pub-date><pub-date pub-type="collection"><year>2008</year></pub-date><volume>2</volume><fpage>30</fpage><lpage>37</lpage><history><date date-type="received"><day>21</day><month>11</month><year>2007</year></date><date date-type="accepted"><day>13</day><month>2</month><year>2008</year></date></history><permissions><copyright-statement>© Mart and Carlos; Licensee <italic>Bentham Open.</italic></copyright-statement><copyright-year>2008</copyright-year><copyright-holder>Mart and Carlos</copyright-holder><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc/3.0/"><p>This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License(<uri xlink:type="simple" xlink:href="http://creativecommons.org/licenses/by-nc/3.0/">http://creativecommons.org/licenses/by-nc/3.0/</uri>),which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.</p></license></permissions><abstract><sec sec-type="abstract"><title>Abstract:</title><p>The use of implants as anchorage for orthodontic forces seems to be a good alternative in partially edentulous patients needing orthodontic treatment. </p><p>This study is aimed at assessing the performance and behavior of microtextured surface endosseous implants obtained by means of a double acid etching against orthodontic forces, as well as their adequacy to be used first as anchorage and later as fixtures for the definitive prosthesis.</p></sec><sec sec-type="materials|methods"><title>Materials and Methods:</title><p> A total of 93 double acid-etched surface parallel wall implants (Osseotite® Implants, Implant Innovations Inc., Palm Beach, Florida, USA) were inserted in 38 partially edentulous patients prior to orthodontic treatment This was carried out by following two-stage surgery protocols in the maxilla as well as in the mandible.</p><p>After a healing period of six months for the maxilla and four months for the mandible, the implants were used as anchorage for sliding, compression and traction orthodontic forces between 100 to 200 g by means of Ni-TI springs.</p><p>Bone level and Resonance Frequency Analysis (RFA) were measured before and after the introduction of the orthodontics forces.</p></sec><sec sec-type="results"><title>Results:</title><p> After removal of the orthodontics appliances, all the implants remained stabile and served as support for prosthetic replacement of missing teeth. The bone level showed no variationeven when a positive difference 0.02 ± 0.38mm was noticed. The RFA scored a significant difference (p≤ 0.03) between the initial Implant Stability Quotient (ISQ) values (66) and the final ones (68).</p></sec><sec sec-type="conclusion"><title>Conclusions:</title><p> These findings showed that Osseotite implants were able to support the orthodontic forces applied during this investigation, maintaining osseointegration without significant variation in bone level. Therefore, they can be used to support dental prosthesis once they have been used as orthodontic anchorage under the cited conditions.</p></sec></abstract><kwd-group><title>Key Words</title><kwd>Osseointegrated implants</kwd><kwd>orthodontic forces</kwd><kwd>absolute anchorage</kwd></kwd-group></article-meta></front><body><sec sec-type="intro"><title>INTRODUCTION</title><p>For many years osseointegrated implant have been used to replace missing teeth with excellent results [<xref ref-type="bibr" rid="R1">1</xref>-<xref ref-type="bibr" rid="R2">2</xref>-<xref ref-type="bibr" rid="R3">3</xref>]. Other indications have been proposed for the use of implants, like maxillofacial or orthodontic anchorage [<xref ref-type="bibr" rid="R4">4</xref>-<xref ref-type="bibr" rid="R5">5</xref>-<xref ref-type="bibr" rid="R6">6</xref>-<xref ref-type="bibr" rid="R7">7</xref>]. The use of implants as anchorage for orthodontic forces seems to be a good alternative in partially edentulous patients that need orthodontic treatment. [<xref ref-type="bibr" rid="R8">8</xref>-<xref ref-type="bibr" rid="R9">9</xref>-<xref ref-type="bibr" rid="R10">10</xref>-<xref ref-type="bibr" rid="R11">11</xref><xref ref-type="bibr" rid="R12">12</xref>]</p><p>The advantage of using an osseointegrated implant as orthodontic anchorage is that the implant is absolutely immobile because of the absence of periodontal ligament. Thus the applied forces acts on the bone without occurrence of bone resorption. This phenomenon is called “absolute anchorage” [<xref ref-type="bibr" rid="R13">13</xref>].</p><p>Higuchi and Slack [<xref ref-type="bibr" rid="R14">14</xref>] showed good results by using machined surface implants in humans. Similar results were achieved by Thilander [<xref ref-type="bibr" rid="R15">15</xref>], Odman [<xref ref-type="bibr" rid="R16">16</xref>] and Roberts [<xref ref-type="bibr" rid="R17">17</xref>].</p><p>In some of these studies, implants were placed in areas of the mandible or the maxilla where teeth were absent, like the palate, the retromolar area or others.</p><p>In some cases the best option might consist in placing the implant or implants into the site where the missing tooth or teeth should be replaced. In doing so, the fixture will function as orthodontic anchorage first and then as prosthetic anchorage. Several authors have presented this concept and showed how to plan implant position by working with different types of implants. [<xref ref-type="bibr" rid="R18">18</xref>-<xref ref-type="bibr" rid="R19">19</xref>-<xref ref-type="bibr" rid="R20">20</xref>]</p><p>The present study was aimed at assessing the performance and behavior of endosseous implants with a microtextured surface obtained by means of a double acid etching against orthodontic forces as well as their adequacy to be used first as anchorage and subsequently, as fixtures for the definitive prosthesis.</p></sec><sec sec-type="materials|methods"><title>MATERIAL AND METHODS</title><p>This prospective study was performed in 38 patients, 9 men and 29 women between 22 and 64 years of age and partially edentulous requiring orthodontic treatment. The exclusion criteria for the selection of the cases were: systemic condition that impeded oral surgery, drugs, alcohol or excessive use of cigarettes (no more than 12 cigarettes per day), pregnancy as well as growing patients.</p><p>These patients requested orthodontic treatment for aesthetic or functional motives and gave informed consent to take part in the investigation. The treatment was performed in private practice as well as at the School of Dentistry of the Cordoba National University between March 2002 and March 2006. For the purpose of statistical analysis, the patients were divided into 3 groups: 22 to 42 years old (n=16), 42 to 53 years old (n=15) and 53 to 64 years old (n=7). Most of the implants were placed in group 1.</p><p>Clinical, radiographic and cephalometric studies were carried out. Splints for mandibular reposition were used in all the cases and study models were mounted in semi adjustable articulator (SAM III, Great Lakes Orthodontics Ltd., NY, USA) by using facial bow and centric relation records. A second pair of casts was made in order to determine the final teeth setup and the sites where implants had to be replaced. The diagnostic cast of teeth to be replaced was made available to the surgeon along with a surgical guide. (Fig. <bold><xref ref-type="fig" rid="F1">1</xref></bold>).</p><p>A total of 93 double acid etched surface implants (Osseotite® Implant Innovations Inc., Palm Beach, Florida, USA) were inserted into the sites prior to orthodontic treatment. 43 implants were placed in the mandible and 50 implants in the maxilla. The implants placed were unequally distributed into five groups of patients. A group of nine patients had only 1 (one) implant placed, a group of twelve patients had 2 (two) implants placed; ten patients had 3 (three) implant placed, 6 others had 4 (four) implants placed, and one patient had 6 (six) implants placed.</p><p>All implants were traditional straight wall implants with hybrid (machined surface at the first 3mm from the occlusal area and double acid-etched surface from this point to the apical area) and were inserted into the sites according to the two stage surgery protocol. [<xref ref-type="bibr" rid="R21">21</xref>-<xref ref-type="bibr" rid="R22">22</xref>] Bone quality was determined during the drilling procedures [<xref ref-type="bibr" rid="R23">23</xref>] and no irrigation was used during implant insertion [<xref ref-type="bibr" rid="R22">22</xref>-<xref ref-type="bibr" rid="R24">24</xref>]</p><p>Distribution of implants according to their width and length, tooth and jaw position and patients’ gender are shown in Tables <bold><xref ref-type="table" rid="T1">1</xref></bold>, <bold><xref ref-type="table" rid="T2">2</xref></bold> and <bold><xref ref-type="table" rid="T3">3</xref></bold>. Bone quality is shown in Table <bold><xref ref-type="table" rid="T4">4</xref></bold>.</p><p>After a healing period of six months for the maxilla and four months for the mandible, a second stage surgery was performed and titanium healing abutments were placed.</p><p>At this point, the selection of the implants that would be loaded and used as anchorage for orthodontic forces was made in accordance with the following success criteria: lack of pain or discomfort, absence of clinical mobility, no infection or important inflammation, absence of peri-implant radiolucency, absence of progressive or severe bone loss (no more than 2.0 mm the first year and no more than 0.2 mm per year after the first one) and Implant Stability Quotient (ISQ) = 50 or more.</p><p>In order to be selected for anchorage use, the implants had to meet all the selection criteria.</p><p>All installed implants showed osseointegration, thus meeting the selection criteria. All implants were, therefore, used for orthodontic anchorage.</p><p>Titanium straight posts (Gingi-Hue Post, Implant Innovations Inc., Palm Beach, Florida, USA) were placed and fixed with gold screws (Gold-tite Square Screw, Implant Innovations Inc., Palm Beach, Florida, USA) and torqued to 35 Ncm with the appropriate device. (Torque Indicator Kit, Biomet 3i, Palm Beach, Florida, USA). Resin temporary crowns were prepared and cemented on the posts with definitive cement. (Ketac- Cem 3M ESPE, St. Paul, USA).</p><p>“Synergy” RMO<sup>®</sup> (Rocky Mountain Orthodontics, Colorado, USA), or “Clarity” 3M<sup>®</sup> (3M Unitek, CA, USA) brackets were cemented on the temporaries. The same brackets were used in the remaining teeth when implementing orthodontic treatment.</p><p>The implants used as anchorage were submitted to sliding, compression and traction forces by means of Ni-Ti Sentalloy closed and open coil springs. Closed springs were placed from the hook of the implant’s bracket to the hook of the adjacent tooth’s bracket, while open springs were placed between both brackets along the wire. (Figs. <bold><xref ref-type="fig" rid="F2">2</xref></bold> and <bold><xref ref-type="fig" rid="F3">3</xref></bold>).</p><p>Closed springs were used in 51.6% of the implants (n = 48) while open springs were used in 48,4% of the cases (n= 45).</p><p>The springs produced forces between 100 to 200 g depending on the spring selected for each case. When inactive, closed springs are 3mm long but can reach 15mm when they are activated, keeping a constant force throughout their length. Beside open springs are 15mm long and can be compressed to 3mm, maintaining a constant force.</p><p>Twenty one implants received 100 g springs, 33 implants received 150 g springs and 39 implants received 200 g springs. Tooth movements were between 0.6 to 7.5 mm (mean: 1,7mm) and implants were used as orthodontic anchorage for periods ranging from 2 to 9 months (mean: 3.5 months).</p><p>On the same day the implants were loaded and used as orthodontic anchorage, bone level and gingival index were measured, mobility was tested and RFA was performed.</p><p>Bone level was determined by taking standardized radiographs.[<xref ref-type="bibr" rid="R25">25</xref>-<xref ref-type="bibr" rid="R26">26</xref>] One UNI-BITE® (Dentsplay Rinn, Illinois, USA) x-ray holder was used in each case after individualize it with Duralay resin in order to be able to achieve the same position before and after orthodontic forces were applied (Fig. <bold><xref ref-type="fig" rid="F4">4</xref></bold>).</p><p>A Teflon ring specially made for this study, was attached to the X-ray apparatus with a groove on its inner face, where the positioner was placed. This was in order to be able to center the film and replicate the same position later on.</p><p>The x-rays were developed in an automatic machine in order to standardize density and contrast. Then they were digitalized at 1200 dpi. Gray scale and pseudo-coloration images were analyzed by using Nemoceph Dental Studio® software 2005 version. (Software Nemotec S.L.,Visiodent SA.France). Mesial and distal measurements were taken from the implant-abutment connection to the first implant-bone contact [<xref ref-type="bibr" rid="R27">27</xref>-<xref ref-type="bibr" rid="R28">28</xref>-<xref ref-type="bibr" rid="R29">29</xref>] by using a triple-blind method. These measurements were compared to the ones obtained with the same method at the moment when orthodontic forces were eliminated. (Fig. <bold><xref ref-type="fig" rid="F5">5</xref></bold>).</p><p>Soft tissue evaluation was performed according to Loe and Silness index [<xref ref-type="bibr" rid="R30">30</xref>]</p><p>Mobility was tested with a metallic instrument at implant level [<xref ref-type="bibr" rid="R31">31</xref>] before abutment placement and when the abutment was removed.</p><p>Resonance Frequency Analysis was performed by using an Osstell device (Integration Diagnostics AB, Göteborg, Sweden) and connecting a Type F1 sensor (Integration Diagnostics AB, Göteborg, Sweden) at implant level before abutment’s placement.[<xref ref-type="bibr" rid="R32">32</xref>-<xref ref-type="bibr" rid="R33">33</xref>-<xref ref-type="bibr" rid="R34">34</xref>] The ISQ values obtained were compared with the ones obtained after orthodontics forces were removed.</p><p>When orthodontic treatment was finished all the implants were used for supporting single permanent prosthetic restorations.</p></sec><sec sec-type="results"><title>RESULTS</title><p>After the removal of orthodontics forces all the implants remained firm, without movement, acting as “absolute anchorage” and serving as support for the prosthetic replacement of missing teeth. In the 100% of the cases, the implants were used as fixtures for the definitive crowns.</p><p>According to the success criteria for this study, 100% of the implants were successful.</p><p>The statistical analysis of the corresponding osseous level data was carried out in accordance with the Student T test for paired samples and the test of variance no-parametric of Kruscal Wallis and test U of Man Whitney. The level of significance accepted was p≤0.05.</p><p>No significant changes were found at bone level neither for mesial (p≤0.6) nor for distal (p≤0.3) bone level despite a positive difference (0.02 ± 0.34mm) in both sites bone level was found.</p><p>Statistic analysis of bone level in relation to gender, age and bone type are shown in Tables <bold><xref ref-type="table" rid="T5">5</xref></bold>, <bold><xref ref-type="table" rid="T6">6</xref></bold> and <bold><xref ref-type="table" rid="T7">7</xref></bold>.</p><p>The Resonance Frequency Analysis scored a significant difference (p≤ 0.03) between the initial ISQ values (mean value: 66.26) and the final ones (mean value: 68.26) but without significant differences in relation to gender, age, distribution, bone type length and width of the implants.</p><p>Loe and Silness Gingival Index showed the absence of gingival inflammation in 26 implants (28%), mild inflammation in 54 implants (54%), and moderate inflammation in 13 implants (14%). In 80 implants (86%) the probing depth was less than 2mm and in 13 implants (14%) the depth was 3mm. No implants showed probing depth exceeding 3 mm´s.</p><p>A follow- up was performed 12 to 48 months after the definitive prostheses were inserted. The success rate obtained was 100% for all the implants placed.</p></sec><sec sec-type="discussion"><title>DISCUSSION</title><p>The high success rate (100 %) achieved in the present study in both the maxilla as well as in the mandible might likely be related to the characteristics of the implant surface. The particular double acid-etched surface used in this study is a bio-engineered surface created by an acid-etching process by using hydrochloric and sulfuric acid applied to a commercially-pure titanium implant. This textured surface prevents the contraction of the fibrin clot, away form the implant surface rendering the surface osteoconductive. Since the fibrin clot is retained by the osteoconductive implant surface, the osteogenic cells generate bone tissue directly on the implant surface through a process called “contact osteogenesis” that results in an accelerated early bone healing [<xref ref-type="bibr" rid="R35">35</xref>]. Furthermore, when compared to the machined surface, DAE surface exhibited a statistically significantly higher percentage of bone-to-implant contact in poor quality bones [<xref ref-type="bibr" rid="R36">36</xref>], as well as a higher cumulative success rate in clinical studies [<xref ref-type="bibr" rid="R22">22</xref>-<xref ref-type="bibr" rid="R24">24</xref>-<xref ref-type="bibr" rid="R34">34</xref>-<xref ref-type="bibr" rid="R37">37</xref>-<xref ref-type="bibr" rid="R38">38</xref>-<xref ref-type="bibr" rid="R39">39</xref>-<xref ref-type="bibr" rid="R40">40</xref>].</p><p>Higuchi and Slack 1991 [<xref ref-type="bibr" rid="R4">4</xref>] reported similar success rates when using machined implants, but most of the implants used were placed in the mandible.</p><p>Odman <italic>et al. </italic>[<xref ref-type="bibr" rid="R17">17</xref>] used 23 machined titanium implants in nine partially edentulous adult patients as orthodontic anchorage to perform different types of orthodontic tooth movements: tipping, torquing, rotation, intrusion, extrusion, and those associated with bodily movements. The total orthodontic treatment period varied between 4 and 33 months. All the osseointegrated titanium implants used as orthodontic anchorage remained in position after orthodontic loading and were used as abutments for permanent prosthetic constructions.</p><p>In 2002 Trisi and Rebaudi [<xref ref-type="bibr" rid="R41">41</xref>] used implants for orthodontic anchorage in forty-one adult patients. Implants were placed in different sites and all implants remained stable in the bone up to 12 months of loading, and all were osseointegrated.</p><p>Werhbein <italic>et al</italic>. [<xref ref-type="bibr" rid="R42">42</xref>] achieved similar results by using SLA surface implants placed in the mid-palatal and the retromolar area.</p><p>The characteristics of the forces used to perform tooth movements could have an influence too. Various authors [<xref ref-type="bibr" rid="R43">43</xref>-<xref ref-type="bibr" rid="R44">44</xref>-<xref ref-type="bibr" rid="R45">45</xref>] showed that Ni-Ti springs produced a very slight, continued and physiologic force that is very well accepted and tolerated by the bone.</p><p>Aldikacti <italic>et al</italic>. [<xref ref-type="bibr" rid="R46">46</xref>] placed SLA implants in the maxilla of 3 dogs and in the mandible of 5 dogs, and super elastic nickel-titanium coil springs were activated between the SLA implants and the canines, producing a force of 200 g (2 N). Two unloaded implants (1 in the maxilla, 1 in the mandible) were used for control purposes. Histological analysis shows that the corticalization of bone trabeculae is thicker in loaded than in unloaded implants. New bone formation at the level of the crest was slightly superior in the test implants. The mean bone-implant contact values of the test implants for the maxilla and mandible were 40.23% and 49.33%, respectively. In the control implants, the bone-implant contact value was 67.91% for the maxilla and 49.23% for the mandible.</p><p>Saito <italic>et al</italic>. [<xref ref-type="bibr" rid="R47">47</xref>] placed two machine surface implants in healed mandibular extraction sites of the second and third premolars on each side, in 4 adult male beagle dogs. 18 weeks later, the implants were surgically uncovered, and second-stage abutments with soldered edgewise tubes were attached. One segment in each dog served as a loaded side, and the arch wire was calibrated to produce 200 g of lateral force on the fourth premolar. The contralateral segment served as an unloaded side and was not subjected to orthodontic force. Sectional wires were activated biweekly 24, 28 and 32 weeks. The percentage of peri-implant bone volume was calculated and defined as an index of osseointegration. Not only was there no statistical difference in the percent of peri-implant bone volume between the loaded and unloaded sides, there was also no statistical difference between the compression and tension sides in both loaded and unloaded implants. This suggests that the implants maintained rigid osseointegration.</p><p>Trisi and Rebaudi [<xref ref-type="bibr" rid="R41">41</xref>] showed the histological results of seven implants that were removed at the end of the orthodontic therapy, after 2, 4, 6, and 12 months of orthodontic load. Microfractures, microcracks, and microcalli were observed around implants that had been placed in both low- and high-density bone. After 18 months, the remodeling rate was still elevated.</p><p>Verna <italic>et al</italic>. [<xref ref-type="bibr" rid="R48">48</xref>] suggested that microcracks might act as a trigger for alveolar bone remodeling after the application of an orthodontic load.</p><p>Melsen and Lang [<xref ref-type="bibr" rid="R49">49</xref>] used specially designed TPS implants in monkeys that were loaded with Ni-Ti coil springs and found that loading significantly influenced both the turnover and the density of the alveolar bone in the proximity of the implants. Yet it didn’t not impede osseointegration.</p><p>When bone level was observed radiographically after orthodontic forces were retired it was noted that there were no differences compared with other researches that used the same implants but only used as fixtures for dental prosthesis.</p><p>In a research comparing the results and percentages of success that can be obtained from two-stage surgeries and one-stage surgeries when double acid-etched surface external hex titanium implants are used, Ibañez <italic>et al. </italic>[<xref ref-type="bibr" rid="R22">22</xref>] showed that bone level at the 12<sup>th</sup> month was 0.58 for one-stage placed implants and 0.54 for two-stage placed implants. At the 24<sup>th</sup> month the bone level was 0.77 mm and 0.68 respectively<bold>, </bold>and 0.89 and 0.83 at the 36<sup>th</sup> month. Similar results were achieved by the same authors using Osseotite implants for immediate loading procedures [<xref ref-type="bibr" rid="R28">28</xref>-<xref ref-type="bibr" rid="R34">34</xref>].</p><p>The RFA results suggest increasing implant stability after using orthodontic forces. There was a significant difference (p≤ 0.03) between the initial ISQ values (mean value: 66.26) and the last ones (mean value: 68.26). These results were better than those found by O’Sullivan <italic>et al. </italic>[<xref ref-type="bibr" rid="R50">50</xref>] when initial stability of Osseotite implants was measured in unembalmed human cadavers. Ibañez <italic>et al. </italic>[<xref ref-type="bibr" rid="R34">34</xref>] presented similar results on using Osseotite implants for immediate loading procedures. During this research, implant stability was measured right after surgical insertion and after some months of function. The mean ISQ value achieved after 6 to 12 month in that research was 62.3.</p><p>There were no significant difference ( p= 0.4519) between the ISQ obtained in soft and more dense bone types when orthodontic forces were retired. These results are similar to those reported by Meredith <italic>et al. </italic>[<xref ref-type="bibr" rid="R51">51</xref>], which also showed that the stability of implants placed in softer bone seemed to "catch up" over time with more dense bone sites.</p></sec><sec sec-type="conclusion"><title>CONCLUSIONS</title><p>The findings of the current study prove that Osseotite implants were suitable to support the orthodontic forces applied during this investigation maintaining the osseointegration process without significant variation in bone level. 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diagnostic teeth setup was prepared and a wax-up was done in order to write the surgical guide</p></caption><graphic xlink:href="TODENTJ-2-30_F1"></graphic></fig><fig id="F2" position="float"><label>Fig. (2)</label><caption><p>Closed spring placed from the hook of the implant´s bracket (site 15) to the hook of the tooth´s bracket (tooth 13).</p></caption><graphic xlink:href="TODENTJ-2-30_F2"></graphic></fig><fig id="F3" position="float"><label>Fig. (3)</label><caption><p>Open springs placed between the hook of the implant´s bracket (site 46) and the tooth´s bracket (tooth 47).</p></caption><graphic xlink:href="TODENTJ-2-30_F3"></graphic></fig><fig id="F4" position="float"><label>Fig. (4)</label><caption><p>Bone level was determined taken standardized radiographs.One UNI-BITE® x-ray holder was used in each case after individualize it with Duralay resin in order to be able to achieve the same position before and after orthodontic forces were applied.</p></caption><graphic xlink:href="TODENTJ-2-30_F4"></graphic></fig><fig id="F5" position="float"><label>Fig. (5)</label><caption><p>Pre and post peri-apical x-rays of case 7. Normal view and pseudo coloration view were bone level can be observed. An Osseotite implant was used as orthodontic anchorage in site 46. The movement of tooth number 47 was 3.6mm and the forces were acting during 90 days.</p></caption><graphic xlink:href="TODENTJ-2-30_F5"></graphic></fig><table-wrap id="T1" position="float"><label>Table 1.</label><caption><p> Distribution of Implants According to their Width and Length</p></caption><table frame="border" rules="all" width="100%"><thead><tr><th rowspan="1" colspan="1">Width and Length (mm.)</th><th rowspan="1" colspan="1">Number of Implants</th></tr></thead><tbody><tr><td align="center" rowspan="1" colspan="1"> 4x10</td><td align="center" rowspan="1" colspan="1"> 14</td></tr><tr><td align="center" rowspan="1" colspan="1"> 4x11.5</td><td align="center" rowspan="1" colspan="1"> 19</td></tr><tr><td align="center" rowspan="1" colspan="1"> 4x13</td><td align="center" rowspan="1" colspan="1"> 19</td></tr><tr><td align="center" rowspan="1" colspan="1"> 5x10</td><td align="center" rowspan="1" colspan="1"> 16</td></tr><tr><td align="center" rowspan="1" colspan="1"> 5x11,5</td><td align="center" rowspan="1" colspan="1"> 15</td></tr><tr><td align="center" rowspan="1" colspan="1"> 6x10</td><td align="center" rowspan="1" colspan="1"> 5</td></tr><tr><td align="center" rowspan="1" colspan="1"> 6x11,5</td><td align="center" rowspan="1" colspan="1"> 5</td></tr></tbody></table></table-wrap><table-wrap id="T2" position="float"><label>Table 2.</label><caption><p> Distribution of Implants According to Gender</p></caption><table frame="border" rules="all" width="100%"><thead><tr><th rowspan="1" colspan="1">Gender</th><th rowspan="1" colspan="1">Number of Patients</th><th rowspan="1" colspan="1">Number of Implants</th></tr></thead><tbody><tr><td align="center" rowspan="1" colspan="1"> Female</td><td align="center" rowspan="1" colspan="1"> 29</td><td align="center" rowspan="1" colspan="1"> 77</td></tr><tr><td align="center" rowspan="1" colspan="1"> Male</td><td align="center" rowspan="1" colspan="1"> 9</td><td align="center" rowspan="1" colspan="1"> 16</td></tr></tbody></table></table-wrap><table-wrap-group id="T3" position="float"><label>Table 3.</label><caption><p>Distribution of Implants According to Tooth Position and Jaw (FDI) </p></caption><table-wrap id="T3A" position="float"><table frame="border" rules="all" width="100%"><tr><td align="center" rowspan="1" colspan="1"><bold>Tooth position (maxillar)</bold></td><td align="center" rowspan="1" colspan="1"> 17</td><td align="center" rowspan="1" colspan="1"> 16</td><td align="center" rowspan="1" colspan="1"> 15</td><td align="center" rowspan="1" colspan="1"> 14</td><td align="center" rowspan="1" colspan="1"> 13</td><td align="center" rowspan="1" colspan="1"> 12</td><td align="center" rowspan="1" colspan="1"> 11</td><td align="center" rowspan="1" colspan="1"> 21</td><td align="center" rowspan="1" colspan="1"> 22</td><td align="center" rowspan="1" colspan="1"> 23</td><td align="center" rowspan="1" colspan="1"> 24</td><td align="center" rowspan="1" colspan="1"> 25</td><td align="center" rowspan="1" colspan="1"> 26</td><td align="center" rowspan="1" colspan="1"> 27</td></tr><tr><td align="center" rowspan="1" colspan="1"><bold>Number of implants</bold></td><td align="center" rowspan="1" colspan="1"> 2</td><td align="center" rowspan="1" colspan="1"> 4</td><td align="center" rowspan="1" colspan="1"> 9</td><td align="center" rowspan="1" colspan="1"> 4</td><td align="center" rowspan="1" colspan="1"> 1</td><td align="center" rowspan="1" colspan="1"> 3</td><td align="center" rowspan="1" colspan="1"> O</td><td align="center" rowspan="1" colspan="1"> 2</td><td align="center" rowspan="1" colspan="1"> 1</td><td align="center" rowspan="1" colspan="1"> 3</td><td align="center" rowspan="1" colspan="1"> 5</td><td align="center" rowspan="1" colspan="1"> 9</td><td align="center" rowspan="1" colspan="1"> 7</td><td align="center" rowspan="1" colspan="1"> 0</td></tr></table></table-wrap><table-wrap id="T3B" position="float"><table frame="border" rules="all" width="100%"><tr><td align="center" rowspan="1" colspan="1"><bold>Tooth position (mandible)</bold></td><td align="center" rowspan="1" colspan="1"> 47</td><td align="center" rowspan="1" colspan="1"> 46</td><td align="center" rowspan="1" colspan="1"> 45</td><td align="center" rowspan="1" colspan="1"> 44</td><td align="center" rowspan="1" colspan="1"> 43</td><td align="center" rowspan="1" colspan="1"> 42</td><td align="center" rowspan="1" colspan="1"> 41</td><td align="center" rowspan="1" colspan="1"> 31</td><td align="center" rowspan="1" colspan="1"> 32</td><td align="center" rowspan="1" colspan="1"> 33</td><td align="center" rowspan="1" colspan="1"> 34</td><td align="center" rowspan="1" colspan="1"> 35</td><td align="center" rowspan="1" colspan="1"> 36</td><td align="center" rowspan="1" colspan="1"> 37</td></tr><tr><td align="center" rowspan="1" colspan="1"><bold>Number of implants</bold></td><td align="center" rowspan="1" colspan="1"> 4</td><td align="center" rowspan="1" colspan="1"> 11</td><td align="center" rowspan="1" colspan="1"> 4</td><td align="center" rowspan="1" colspan="1"> 1</td><td align="center" rowspan="1" colspan="1"> 0</td><td align="center" rowspan="1" colspan="1"> 1</td><td align="center" rowspan="1" colspan="1"> 1</td><td align="center" rowspan="1" colspan="1"> 1</td><td align="center" rowspan="1" colspan="1"> 2</td><td align="center" rowspan="1" colspan="1"> 0</td><td align="center" rowspan="1" colspan="1"> 0</td><td align="center" rowspan="1" colspan="1"> 6</td><td align="center" rowspan="1" colspan="1"> 9</td><td align="center" rowspan="1" colspan="1"> 3</td></tr></table></table-wrap></table-wrap-group><table-wrap id="T4" position="float"><label>Table 4.</label><caption><p>Distribution of Implants According to Bone Type </p></caption><table frame="border" rules="all" width="100%"><thead><tr><th rowspan="1" colspan="1">Bone Quality</th><th rowspan="1" colspan="1">Number of Implants</th></tr></thead><tbody><tr><td align="center" rowspan="1" colspan="1"> I</td><td align="center" rowspan="1" colspan="1"> 2</td></tr><tr><td align="center" rowspan="1" colspan="1"> II</td><td align="center" rowspan="1" colspan="1"> 49</td></tr><tr><td align="center" rowspan="1" colspan="1"> III</td><td align="center" rowspan="1" colspan="1"> 35</td></tr><tr><td align="center" rowspan="1" colspan="1"> IV</td><td align="center" rowspan="1" colspan="1"> 7</td></tr></tbody></table></table-wrap><table-wrap id="T5" position="float"><label>Table 5.</label><caption><p>Bone Level Remodeling in Relation to Gender </p></caption><table frame="border" rules="all" width="100%"><thead><tr><th rowspan="2" colspan="1">Gender</th><th rowspan="2" colspan="1">N</th><th rowspan="2" colspan="1">Mean</th><th rowspan="2" colspan="1">SD ±</th><th rowspan="2" colspan="1">Minimum</th><th rowspan="2" colspan="1">Maximum</th><th colspan="3" rowspan="1">Bone remodeling (%)</th></tr><tr><th rowspan="1" colspan="1">Negative</th><th rowspan="1" colspan="1">Positive</th><th rowspan="1" colspan="1">Null</th></tr></thead><tbody><tr><td align="center" rowspan="1" colspan="1"> Female</td><td align="center" rowspan="1" colspan="1"> 77</td><td align="center" rowspan="1" colspan="1"> 0.00</td><td align="center" rowspan="1" colspan="1"> ±0.28</td><td align="center" rowspan="1" colspan="1"> 1.38</td><td align="center" rowspan="1" colspan="1"> -1.09</td><td align="center" rowspan="1" colspan="1"> 19 (25%)</td><td align="center" rowspan="1" colspan="1"> 57 (74%)</td><td align="center" rowspan="1" colspan="1"> 1 (1%)</td></tr><tr><td align="center" rowspan="1" colspan="1"> Male</td><td align="center" rowspan="1" colspan="1"> 16</td><td align="center" rowspan="1" colspan="1"> 0.06</td><td align="center" rowspan="1" colspan="1"> ±0.49</td><td align="center" rowspan="1" colspan="1"> 1.19</td><td align="center" rowspan="1" colspan="1"> -0.99</td><td align="center" rowspan="1" colspan="1"> 6 (38%)</td><td align="center" rowspan="1" colspan="1"> 9 (56%)</td><td align="center" rowspan="1" colspan="1"> 1 (6%)</td></tr></tbody></table><table-wrap-foot><fn id="TF5"><p>n: Number of implants.</p></fn></table-wrap-foot></table-wrap><table-wrap id="T6" position="float"><label>Table 6.</label><caption><p>Bone Level Remodeling in Relation to Age </p></caption><table frame="border" rules="all" width="100%"><thead><tr><th rowspan="2" colspan="1">Groups According to Age</th><th rowspan="2" colspan="1">N</th><th rowspan="2" colspan="1">Mean</th><th rowspan="2" colspan="1">SD ±</th><th rowspan="2" colspan="1">Minimum</th><th rowspan="2" colspan="1">Maximum</th><th colspan="3" rowspan="1">Bone remodeling (%)</th></tr><tr><th rowspan="1" colspan="1">Negative</th><th rowspan="1" colspan="1">Positive</th><th rowspan="1" colspan="1">Null</th></tr></thead><tbody><tr><td align="center" rowspan="1" colspan="1"><bold>1</bold>(22-42)</td><td align="center" rowspan="1" colspan="1">38</td><td align="center" rowspan="1" colspan="1">0.02</td><td align="center" rowspan="1" colspan="1"> ±0.43</td><td align="center" rowspan="1" colspan="1"> 1.38</td><td align="center" rowspan="1" colspan="1"> -1.09</td><td align="center" rowspan="1" colspan="1"> 12 (31%)</td><td align="center" rowspan="1" colspan="1"> 25 (66%)</td><td align="center" rowspan="1" colspan="1"> 1 (3%)</td></tr><tr><td align="center" rowspan="1" colspan="1"><bold>2 </bold>(42-53)</td><td align="center" rowspan="1" colspan="1">34</td><td align="center" rowspan="1" colspan="1">- 0.01</td><td align="center" rowspan="1" colspan="1">±0.21</td><td align="center" rowspan="1" colspan="1"> 0.43</td><td align="center" rowspan="1" colspan="1">-0.60</td><td align="center" rowspan="1" colspan="1"> 10 (29%)</td><td align="center" rowspan="1" colspan="1"> 23 (68%)</td><td align="center" rowspan="1" colspan="1"> 1 (3%)</td></tr><tr><td align="center" rowspan="1" colspan="1"><bold>3</bold>(53-64)</td><td align="center" rowspan="1" colspan="1">21</td><td align="center" rowspan="1" colspan="1">0.01</td><td align="center" rowspan="1" colspan="1">±0.27</td><td align="center" rowspan="1" colspan="1">0.45</td><td align="center" rowspan="1" colspan="1">-1.01</td><td align="center" rowspan="1" colspan="1">3 (14%)</td><td align="center" rowspan="1" colspan="1">18 (86%)</td><td align="center" rowspan="1" colspan="1">-</td></tr></tbody></table><table-wrap-foot><fn id="TF6"><p> n: Number of implants.</p></fn></table-wrap-foot></table-wrap><table-wrap id="T7" position="float"><label>Table 7.</label><caption><p> Bone Level Remodeling in Relation to Bone Type</p></caption><table frame="border" rules="all" width="100%"><thead><tr><th rowspan="2" colspan="1">Bone Quality</th><th rowspan="2" colspan="1">N</th><th rowspan="2" colspan="1">Mean</th><th rowspan="2" colspan="1">SD ±</th><th rowspan="2" colspan="1">Minimum</th><th rowspan="2" colspan="1">Maximum</th><th colspan="3" rowspan="1">Bone remodeling (%)</th></tr><tr><th rowspan="1" colspan="1">Negative</th><th rowspan="1" colspan="1">Positive</th><th rowspan="1" colspan="1">Null</th></tr></thead><tbody><tr><td align="center" rowspan="1" colspan="1">I</td><td align="center" rowspan="1" colspan="1">2</td><td align="center" rowspan="1" colspan="1">-0.15</td><td align="center" rowspan="1" colspan="1">0.17</td><td align="center" rowspan="1" colspan="1">-0.03</td><td align="center" rowspan="1" colspan="1">-0.27</td><td align="center" rowspan="1" colspan="1">2 (100%)</td><td align="center" rowspan="1" colspan="1">-</td><td align="center" rowspan="1" colspan="1">-</td></tr><tr><td align="center" rowspan="1" colspan="1">II</td><td align="center" rowspan="1" colspan="1">49</td><td align="center" rowspan="1" colspan="1">-0.01</td><td align="center" rowspan="1" colspan="1">0.26</td><td align="center" rowspan="1" colspan="1">0.36</td><td align="center" rowspan="1" colspan="1">-1.09</td><td align="center" rowspan="1" colspan="1">14 (29%)</td><td align="center" rowspan="1" colspan="1">34 (69%)</td><td align="center" rowspan="1" colspan="1">1 (2%)</td></tr><tr><td align="center" rowspan="1" colspan="1">III</td><td align="center" rowspan="1" colspan="1">35</td><td align="center" rowspan="1" colspan="1">0.03</td><td align="center" rowspan="1" colspan="1">0.32</td><td align="center" rowspan="1" colspan="1">1.19</td><td align="center" rowspan="1" colspan="1">-0.99</td><td align="center" rowspan="1" colspan="1">7 (20%)</td><td align="center" rowspan="1" colspan="1">27 (77%)</td><td align="center" rowspan="1" colspan="1">1 (3%)</td></tr><tr><td align="center" rowspan="1" colspan="1">IV</td><td align="center" rowspan="1" colspan="1">7</td><td align="center" rowspan="1" colspan="1">0.11</td><td align="center" rowspan="1" colspan="1">0.69</td><td align="center" rowspan="1" colspan="1">1.38</td><td align="center" rowspan="1" colspan="1">-1.00</td><td align="center" rowspan="1" colspan="1">2 (29%)</td><td align="center" rowspan="1" colspan="1">5 (71%)</td><td align="center" rowspan="1" 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