Serveur d'exploration sur le patient édenté

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Alveolar Ridge Reconstruction with Titanium Meshes and Simultaneous Implant Placement: A Retrospective, Multicenter Clinical Study

Identifieur interne : 006C97 ( Ncbi/Merge ); précédent : 006C96; suivant : 006C98

Alveolar Ridge Reconstruction with Titanium Meshes and Simultaneous Implant Placement: A Retrospective, Multicenter Clinical Study

Auteurs : Raquel Zita Gomes [Portugal] ; Andres Paraud Freixas [Chili] ; Chang-Hun Han [Corée du Sud] ; Sohueil Bechara [Lituanie] ; Isaac Tawil [États-Unis]

Source :

RBID : PMC:5141311

Abstract

Objective. To evaluate horizontal bone gain and implant survival and complication rates in patients treated with titanium meshes placed simultaneously with dental implants and fixed over them. Methods. Twenty-five patients treated with 40 implants and simultaneous guided bone regeneration with titanium meshes (i–Gen®, MegaGen, Gyeongbuk, Republic of Korea) were selected for inclusion in the present retrospective multicenter study. Primary outcomes were horizontal bone gain and implant survival; secondary outcomes were biological and prosthetic complications. Results. After the removal of titanium meshes, the CBCT evaluation revealed a mean horizontal bone gain of 3.67 mm (±0.89). The most frequent complications were mild postoperative edema (12/25 patients: 48%) and discomfort after surgery (10/25 patients: 40%); these complications were resolved within one week. Titanium mesh exposure occurred in 6 patients (6/25 : 24%): one of these suffered partial loss of the graft and another experienced complete graft loss and implant failure. An implant survival rate of 97.5% (implant-based) and a peri-implant marginal bone loss of 0.43 mm (±0.15) were recorded after 1 year. Conclusions. The horizontal ridge reconstruction with titanium meshes placed simultaneously with dental implants achieved predictable satisfactory results. Prospective randomized controlled trials on a larger sample of patients are required to validate these positive outcomes.


Url:
DOI: 10.1155/2016/5126838
PubMed: 27999799
PubMed Central: 5141311

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PMC:5141311

Le document en format XML

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<name sortKey="Zita Gomes, Raquel" sort="Zita Gomes, Raquel" uniqKey="Zita Gomes R" first="Raquel" last="Zita Gomes">Raquel Zita Gomes</name>
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<nlm:aff id="I1">Faculty of Dental Medicine, University of Oporto, Rua Manuel Pereira da Silva, 4200-393 Oporto, Portugal</nlm:aff>
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<name sortKey="Han, Chang Hun" sort="Han, Chang Hun" uniqKey="Han C" first="Chang-Hun" last="Han">Chang-Hun Han</name>
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<name sortKey="Bechara, Sohueil" sort="Bechara, Sohueil" uniqKey="Bechara S" first="Sohueil" last="Bechara">Sohueil Bechara</name>
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<name sortKey="Zita Gomes, Raquel" sort="Zita Gomes, Raquel" uniqKey="Zita Gomes R" first="Raquel" last="Zita Gomes">Raquel Zita Gomes</name>
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<nlm:aff id="I2">Private Practice, Gamero #504, 2840941 Rancagua, Chile</nlm:aff>
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<name sortKey="Han, Chang Hun" sort="Han, Chang Hun" uniqKey="Han C" first="Chang-Hun" last="Han">Chang-Hun Han</name>
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<p>
<italic>Objective.</italic>
To evaluate horizontal bone gain and implant survival and complication rates in patients treated with titanium meshes placed simultaneously with dental implants and fixed over them.
<italic> Methods.</italic>
Twenty-five patients treated with 40 implants and simultaneous guided bone regeneration with titanium meshes (i–Gen®, MegaGen, Gyeongbuk, Republic of Korea) were selected for inclusion in the present retrospective multicenter study. Primary outcomes were horizontal bone gain and implant survival; secondary outcomes were biological and prosthetic complications.
<italic> Results.</italic>
After the removal of titanium meshes, the CBCT evaluation revealed a mean horizontal bone gain of 3.67 mm (±0.89). The most frequent complications were mild postoperative edema (12/25 patients: 48%) and discomfort after surgery (10/25 patients: 40%); these complications were resolved within one week. Titanium mesh exposure occurred in 6 patients (6/25 : 24%): one of these suffered partial loss of the graft and another experienced complete graft loss and implant failure. An implant survival rate of 97.5% (implant-based) and a peri-implant marginal bone loss of 0.43 mm (±0.15) were recorded after 1 year.
<italic> Conclusions</italic>
. The horizontal ridge reconstruction with titanium meshes placed simultaneously with dental implants achieved predictable satisfactory results. Prospective randomized controlled trials on a larger sample of patients are required to validate these positive outcomes.</p>
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</TEI>
<pmc article-type="research-article">
<pmc-dir>properties open_access</pmc-dir>
<front>
<journal-meta>
<journal-id journal-id-type="nlm-ta">Biomed Res Int</journal-id>
<journal-id journal-id-type="iso-abbrev">Biomed Res Int</journal-id>
<journal-id journal-id-type="publisher-id">BMRI</journal-id>
<journal-title-group>
<journal-title>BioMed Research International</journal-title>
</journal-title-group>
<issn pub-type="ppub">2314-6133</issn>
<issn pub-type="epub">2314-6141</issn>
<publisher>
<publisher-name>Hindawi Publishing Corporation</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="pmid">27999799</article-id>
<article-id pub-id-type="pmc">5141311</article-id>
<article-id pub-id-type="doi">10.1155/2016/5126838</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Clinical Study</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>Alveolar Ridge Reconstruction with Titanium Meshes and Simultaneous Implant Placement: A Retrospective, Multicenter Clinical Study</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<contrib-id contrib-id-type="orcid" authenticated="false">http://orcid.org/0000-0002-3360-3903</contrib-id>
<name>
<surname>Zita Gomes</surname>
<given-names>Raquel</given-names>
</name>
<xref ref-type="aff" rid="I1">
<sup>1</sup>
</xref>
<xref ref-type="corresp" rid="cor1">
<sup>*</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Paraud Freixas</surname>
<given-names>Andres</given-names>
</name>
<xref ref-type="aff" rid="I2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Han</surname>
<given-names>Chang-Hun</given-names>
</name>
<xref ref-type="aff" rid="I3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Bechara</surname>
<given-names>Sohueil</given-names>
</name>
<xref ref-type="aff" rid="I4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Tawil</surname>
<given-names>Isaac</given-names>
</name>
<xref ref-type="aff" rid="I5">
<sup>5</sup>
</xref>
</contrib>
</contrib-group>
<aff id="I1">
<sup>1</sup>
Faculty of Dental Medicine, University of Oporto, Rua Manuel Pereira da Silva, 4200-393 Oporto, Portugal</aff>
<aff id="I2">
<sup>2</sup>
Private Practice, Gamero #504, 2840941 Rancagua, Chile</aff>
<aff id="I3">
<sup>3</sup>
EasyPlant Dental Clinic, Seo-Gu, Gwangju 4455, Republic of Korea</aff>
<aff id="I4">
<sup>4</sup>
Department of Oral and Maxillofacial Surgery, Lithuanian University of Health Science, LT-44307 Kaunas, Lithuania</aff>
<aff id="I5">
<sup>5</sup>
Private Practice, 345 Kings Highway, Brooklyn, NY 11223, USA</aff>
<author-notes>
<corresp id="cor1">*Raquel Zita Gomes:
<email>raquelzitagomes@hotmail.com</email>
</corresp>
<fn fn-type="other">
<p>Academic Editor: Eitan Mijiritsky</p>
</fn>
</author-notes>
<pub-date pub-type="ppub">
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>23</day>
<month>11</month>
<year>2016</year>
</pub-date>
<volume>2016</volume>
<elocation-id>5126838</elocation-id>
<history>
<date date-type="received">
<day>30</day>
<month>9</month>
<year>2016</year>
</date>
<date date-type="accepted">
<day>18</day>
<month>10</month>
<year>2016</year>
</date>
</history>
<permissions>
<copyright-statement>Copyright © 2016 Raquel Zita Gomes et al.</copyright-statement>
<copyright-year>2016</copyright-year>
<license xlink:href="https://creativecommons.org/licenses/by/4.0/">
<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>
<italic>Objective.</italic>
To evaluate horizontal bone gain and implant survival and complication rates in patients treated with titanium meshes placed simultaneously with dental implants and fixed over them.
<italic> Methods.</italic>
Twenty-five patients treated with 40 implants and simultaneous guided bone regeneration with titanium meshes (i–Gen®, MegaGen, Gyeongbuk, Republic of Korea) were selected for inclusion in the present retrospective multicenter study. Primary outcomes were horizontal bone gain and implant survival; secondary outcomes were biological and prosthetic complications.
<italic> Results.</italic>
After the removal of titanium meshes, the CBCT evaluation revealed a mean horizontal bone gain of 3.67 mm (±0.89). The most frequent complications were mild postoperative edema (12/25 patients: 48%) and discomfort after surgery (10/25 patients: 40%); these complications were resolved within one week. Titanium mesh exposure occurred in 6 patients (6/25 : 24%): one of these suffered partial loss of the graft and another experienced complete graft loss and implant failure. An implant survival rate of 97.5% (implant-based) and a peri-implant marginal bone loss of 0.43 mm (±0.15) were recorded after 1 year.
<italic> Conclusions</italic>
. The horizontal ridge reconstruction with titanium meshes placed simultaneously with dental implants achieved predictable satisfactory results. Prospective randomized controlled trials on a larger sample of patients are required to validate these positive outcomes.</p>
</abstract>
</article-meta>
</front>
<floats-group>
<fig id="fig1" orientation="portrait" position="float">
<label>Figure 1</label>
<caption>
<p>Presurgical clinical situation and elevation of full-thickness flap exposing the deficient alveolar ridge. (a) Preoperative clinical picture, frontal view; (b) preoperative clinical picture, occlusal view; (c) elevation of the mucoperiosteal flap, frontal view; (d) elevation of the mucoperiosteal flap, occlusal view.</p>
</caption>
<graphic xlink:href="BMRI2016-5126838.001"></graphic>
</fig>
<fig id="fig2" orientation="portrait" position="float">
<label>Figure 2</label>
<caption>
<p>Preparation of the surgical sites and placement of the implants (AnyRidge, MegaGen, Gyeongbuk, Republic of Korea). (a) The implant sites have been prepared; (b) placement of the first implant in the position of the right lateral incisor; (c) placement of the second implant in the position of the left lateral incisor; (d) the implants
<italic> in situ</italic>
.</p>
</caption>
<graphic xlink:href="BMRI2016-5126838.002"></graphic>
</fig>
<fig id="fig3" orientation="portrait" position="float">
<label>Figure 3</label>
<caption>
<p>Details of the implant sites. (a) Details of the right implant site: fenestration of the thin buccal bone wall; (b) details of the left implant site: the buccal bone wall is thin and requires to be reinforced and protected.</p>
</caption>
<graphic xlink:href="BMRI2016-5126838.003"></graphic>
</fig>
<fig id="fig4" orientation="portrait" position="float">
<label>Figure 4</label>
<caption>
<p>Placement of the titanium meshes (i–Gen, MegaGen, Gyeongbuk, Republic of Korea) and sutures. (a) The titanium meshes are connected to the implants and screwed on with the aid of a connecting screw; (b) particulate bone grafts are placed below the titanium mesh screwed on the right lateral incisor; (c) particulate bone grafts are placed below the titanium mesh screwed on the left lateral incisor; (d) sutures are performed.</p>
</caption>
<graphic xlink:href="BMRI2016-5126838.004"></graphic>
</fig>
<fig id="fig5" orientation="portrait" position="float">
<label>Figure 5</label>
<caption>
<p>Second-stage surgery, removal of the titanium meshes and impressions. (a) and (b) Four months after placement, the titanium meshes were removed; (c) healing abutments were placed in position; (d) two weeks after placement of the healing abutments, impressions were taken.</p>
</caption>
<graphic xlink:href="BMRI2016-5126838.005"></graphic>
</fig>
<fig id="fig6" orientation="portrait" position="float">
<label>Figure 6</label>
<caption>
<p>Cone beam computed tomography (CBCT) scans of the sites before surgery and after removal of the titanium meshes, three months later. (a) Right side: preoperative situation with a very thin residual alveolar ridge; (b) right side: the radiographic situation three months after surgery; (c) left side: preoperative situation with a thin residual alveolar ridge; (d) left side: the radiography three months after surgery.</p>
</caption>
<graphic xlink:href="BMRI2016-5126838.006"></graphic>
</fig>
<fig id="fig7" orientation="portrait" position="float">
<label>Figure 7</label>
<caption>
<p>Prosthetic rehabilitations. (a) The provisional restoration
<italic> in situ</italic>
, two weeks after the first impressions; (b) three months later, the precision of final structure is tested clinically; (c) the application of the definitive metal-ceramic FPP; (d) the final FPP at the final control.</p>
</caption>
<graphic xlink:href="BMRI2016-5126838.007"></graphic>
</fig>
<table-wrap id="tab1" orientation="portrait" position="float">
<label>Table 1</label>
<caption>
<p>Patient-related information.</p>
</caption>
<table frame="hsides" rules="groups">
<thead>
<tr>
<th align="left" rowspan="1" colspan="1"></th>
<th align="center" rowspan="1" colspan="1">N° patients (%)</th>
<th align="center" rowspan="1" colspan="1">
<italic>p</italic>
–value
<sup>
<italic></italic>
</sup>
</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left" rowspan="1" colspan="1">Overall</td>
<td align="center" rowspan="1" colspan="1">25 (100%)</td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">
<italic>Gender</italic>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Males</td>
<td align="center" rowspan="1" colspan="1">15 (60%)</td>
<td rowspan="2" align="center" colspan="1">0.3173</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Females</td>
<td align="center" rowspan="1" colspan="1">10 (40%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">
<italic>Age at surgery</italic>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">43–51</td>
<td align="center" rowspan="1" colspan="1">11 (44%)</td>
<td rowspan="3" align="center" colspan="1">0.4677</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">52–60</td>
<td align="center" rowspan="1" colspan="1">8 (32%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">61–69</td>
<td align="center" rowspan="1" colspan="1">6 (24%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">
<italic>Smoking habit</italic>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Yes</td>
<td align="center" rowspan="1" colspan="1">8 (32%)</td>
<td rowspan="2" align="center" colspan="1">0.0719</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">No</td>
<td align="center" rowspan="1" colspan="1">17 (68%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">
<italic>History of periodontal disease</italic>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Yes</td>
<td align="center" rowspan="1" colspan="1">7 (28%)</td>
<td rowspan="2" align="center" colspan="1">0.0278</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">No</td>
<td align="center" rowspan="1" colspan="1">18 (72%)</td>
</tr>
</tbody>
</table>
<table-wrap-foot>
<fn>
<p>
<sup>
<italic></italic>
</sup>
Chi-square test.</p>
</fn>
</table-wrap-foot>
</table-wrap>
<table-wrap id="tab2" orientation="portrait" position="float">
<label>Table 2</label>
<caption>
<p>Implant-related information.</p>
</caption>
<table frame="hsides" rules="groups">
<thead>
<tr>
<th align="left" rowspan="1" colspan="1"></th>
<th align="center" rowspan="1" colspan="1">N° implants (%)</th>
<th align="center" rowspan="1" colspan="1">
<italic>p</italic>
–value
<sup>
<italic></italic>
</sup>
</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left" rowspan="1" colspan="1">Overall</td>
<td align="center" rowspan="1" colspan="1">40 (100%)</td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">
<italic>Site</italic>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Maxilla</td>
<td align="center" rowspan="1" colspan="1">32 (80%)</td>
<td rowspan="2" align="center" colspan="1">0.0001</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Mandible</td>
<td align="center" rowspan="1" colspan="1">8 (20%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">
<italic>Position</italic>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Incisor/cuspids</td>
<td align="center" rowspan="1" colspan="1">12 (30%)</td>
<td rowspan="3" align="center" colspan="1">0.0074</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Premolars</td>
<td align="center" rowspan="1" colspan="1">22 (55%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Molars</td>
<td align="center" rowspan="1" colspan="1">6 (15%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">
<italic>Protocol</italic>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Healed ridges</td>
<td align="center" rowspan="1" colspan="1">31 (77.5%)</td>
<td rowspan="2" align="center" colspan="1">0.0005</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Postextraction sockets</td>
<td align="center" rowspan="1" colspan="1">9 (22.5%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">
<italic>Length</italic>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">8.0 mm</td>
<td align="center" rowspan="1" colspan="1">7 (17.5%)</td>
<td rowspan="4" align="center" colspan="1">0.0203</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">10.0 mm</td>
<td align="center" rowspan="1" colspan="1">18 (45%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">11.5 mm</td>
<td align="center" rowspan="1" colspan="1">10 (25%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">13.0 mm</td>
<td align="center" rowspan="1" colspan="1">5 (12.5%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">
<italic>Diameter</italic>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">3.5 mm</td>
<td align="center" rowspan="1" colspan="1">19 (47.5%)</td>
<td rowspan="3" align="center" colspan="1">0.0655</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">4.0 mm</td>
<td align="center" rowspan="1" colspan="1">14 (35%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">4.5 mm</td>
<td align="center" rowspan="1" colspan="1">7 (17.5%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">
<italic>Type</italic>
  
<italic>of</italic>
  
<italic>prosthesis</italic>
<sup>
<italic>∗∗</italic>
</sup>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">SCs</td>
<td align="center" rowspan="1" colspan="1">17 (43.6%)</td>
<td rowspan="4" align="center" colspan="1">0.0225</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">FPPs (2 units)</td>
<td align="center" rowspan="1" colspan="1">12 (30.8%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">FPPs (3 units)</td>
<td align="center" rowspan="1" colspan="1">6 (15.4%)</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">FPPs (4 units)</td>
<td align="center" rowspan="1" colspan="1">4 (10.2%)</td>
</tr>
</tbody>
</table>
<table-wrap-foot>
<fn>
<p>
<sup>
<italic></italic>
</sup>
Chi-square test test.</p>
</fn>
<fn>
<p>
<sup>
<italic>∗∗</italic>
</sup>
Calculated on the 39 surviving implants.</p>
</fn>
</table-wrap-foot>
</table-wrap>
<table-wrap id="tab3" orientation="portrait" position="float">
<label>Table 3</label>
<caption>
<p>Peri-implant marginal bone loss between groups of implants at different time periods, in mm (implant level).</p>
</caption>
<table frame="hsides" rules="groups">
<thead>
<tr>
<th align="left" rowspan="1" colspan="1"></th>
<th align="center" rowspan="1" colspan="1">Baseline, 4 months</th>
<th align="center" rowspan="1" colspan="1">Baseline, 1 year</th>
</tr>
<tr>
<th align="left" rowspan="1" colspan="1"></th>
<th align="left" rowspan="1" colspan="1">
<italic>N</italic>
<sup>
<italic></italic>
</sup>
; mean (SD); median; CI 95%</th>
<th align="left" rowspan="1" colspan="1">
<italic>N</italic>
<sup>
<italic></italic>
</sup>
; mean (SD); median; CI 95%</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left" rowspan="1" colspan="1">Overall</td>
<td align="center" rowspan="1" colspan="1">39; 0.40 (±0.20); 0.35; 0.34–0.46</td>
<td align="center" rowspan="1" colspan="1">39; 0.43 (±0.15); 0.44; 0.39–0.47</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Healed sites</td>
<td align="center" rowspan="1" colspan="1">30; 0.42 (±0.21); 0.36; 0.35–0.49</td>
<td align="center" rowspan="1" colspan="1">30; 0.43 (±0.15); 0.44; 0.38–0.48</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">Extraction sockets</td>
<td align="center" rowspan="1" colspan="1">9; 0.35 (±0.17); 0.34; 0.24–0.46</td>
<td align="center" rowspan="1" colspan="1">9; 0.41 (±0.17); 0.44; 0.30–0.52</td>
</tr>
</tbody>
</table>
<table-wrap-foot>
<fn>
<p>
<italic>N</italic>
<sup>
<italic></italic>
</sup>
= number of the surviving implants.</p>
</fn>
</table-wrap-foot>
</table-wrap>
</floats-group>
</pmc>
<affiliations>
<list>
<country>
<li>Chili</li>
<li>Corée du Sud</li>
<li>Lituanie</li>
<li>Portugal</li>
<li>États-Unis</li>
</country>
<region>
<li>État de New York</li>
</region>
</list>
<tree>
<country name="Portugal">
<noRegion>
<name sortKey="Zita Gomes, Raquel" sort="Zita Gomes, Raquel" uniqKey="Zita Gomes R" first="Raquel" last="Zita Gomes">Raquel Zita Gomes</name>
</noRegion>
</country>
<country name="Chili">
<noRegion>
<name sortKey="Paraud Freixas, Andres" sort="Paraud Freixas, Andres" uniqKey="Paraud Freixas A" first="Andres" last="Paraud Freixas">Andres Paraud Freixas</name>
</noRegion>
</country>
<country name="Corée du Sud">
<noRegion>
<name sortKey="Han, Chang Hun" sort="Han, Chang Hun" uniqKey="Han C" first="Chang-Hun" last="Han">Chang-Hun Han</name>
</noRegion>
</country>
<country name="Lituanie">
<noRegion>
<name sortKey="Bechara, Sohueil" sort="Bechara, Sohueil" uniqKey="Bechara S" first="Sohueil" last="Bechara">Sohueil Bechara</name>
</noRegion>
</country>
<country name="États-Unis">
<region name="État de New York">
<name sortKey="Tawil, Isaac" sort="Tawil, Isaac" uniqKey="Tawil I" first="Isaac" last="Tawil">Isaac Tawil</name>
</region>
</country>
</tree>
</affiliations>
</record>

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