Influence of premature exposure of implants on early crestal bone loss : an experimental study in dogs
Identifieur interne : 006535 ( Main/Exploration ); précédent : 006534; suivant : 006536Influence of premature exposure of implants on early crestal bone loss : an experimental study in dogs
Auteurs : Je-Hyeon Yoo [Corée du Sud] ; Byung-Ho Choi [Corée du Sud] ; JINGXU LI [Corée du Sud] ; Han-Sung Kim [Corée du Sud] ; Chang-Yong Ko [Corée du Sud] ; FENG XUAN [Corée du Sud] ; Seung-Mi Jeong [Corée du Sud]Source :
- Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics [ 1079-2104 ] ; 2008.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Objective. Several studies have reported on spontaneous early exposure of submerged implants, suggesting that exposed implants have greater bone loss than nonexposed implants. The purpose of this study was to compare the effects of implant-abutment connections and partial implant exposure on crestal bone loss around submerged implants. Study design. Bilateral, edentulated, flat alveolar ridges were created in the mandible of 6 mongrel dogs. After 3 months of healing, 2 fixtures were placed on each side of the mandible following a commonly accepted 2-stage surgical protocol. The fixtures on each side were randomly assigned to 1 of 2 procedures. In the first, a cover screw was connected to the fixture, and the incised gingiva was partially removed to expose the cover screw (partially exposed group). In the second, a healing abutment was connected to the fixture so that the coronal portion of the abutment remained exposed to the oral cavity (abutment-connected group). After 8 weeks, micro-computed tomography (micro-CT) at the implantation site was performed to measure the bone height in the peri-implant bone. Data were analyzed by Wilcoxon's signed rank test. Results. The average bone height was greater for the abutment-connected fixture (9.8 ± 0.5 mm) than for the partially exposed fixture (9.3 ± 0.5 mm; P <.05). Conclusion. These results suggest that when implant exposure is detected, the placement of healing abutments may help limit bone loss around the submerged implants.
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sortKey="Yoo, Je Hyeon" sort="Yoo, Je Hyeon" uniqKey="Yoo J" first="Je-Hyeon" last="Yoo">Je-Hyeon Yoo</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>WONJU COLLEGE OF MEDICINE</s1><s3>KOR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Corée du Sud</country><wicri:noRegion>WONJU COLLEGE OF MEDICINE</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>YONSEI UNIVERSITY</s1><s3>KOR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Corée du Sud</country><wicri:noRegion>YONSEI UNIVERSITY</wicri:noRegion></affiliation></author><author><name sortKey="Choi, Byung Ho" sort="Choi, Byung Ho" uniqKey="Choi B" first="Byung-Ho" last="Choi">Byung-Ho Choi</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>YONSEI UNIVERSITY</s1><s3>KOR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 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UNIVERSITY</s1><s3>KOR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Corée du Sud</country><wicri:noRegion>YONSEI UNIVERSITY</wicri:noRegion></affiliation></author><author><name sortKey="Ko, Chang Yong" sort="Ko, Chang Yong" uniqKey="Ko C" first="Chang-Yong" last="Ko">Chang-Yong Ko</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>YONSEI UNIVERSITY</s1><s3>KOR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Corée du Sud</country><wicri:noRegion>YONSEI UNIVERSITY</wicri:noRegion></affiliation></author><author><name sortKey="Feng Xuan" sort="Feng Xuan" uniqKey="Feng Xuan" last="Feng Xuan">FENG XUAN</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>YONSEI UNIVERSITY</s1><s3>KOR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Corée du Sud</country><wicri:noRegion>YONSEI UNIVERSITY</wicri:noRegion></affiliation></author><author><name sortKey="Jeong, Seung Mi" sort="Jeong, Seung Mi" uniqKey="Jeong S" first="Seung-Mi" last="Jeong">Seung-Mi Jeong</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>WONJU COLLEGE OF MEDICINE</s1><s3>KOR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Corée du Sud</country><wicri:noRegion>WONJU COLLEGE OF MEDICINE</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>YONSEI UNIVERSITY</s1><s3>KOR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Corée du Sud</country><wicri:noRegion>YONSEI UNIVERSITY</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics</title><title level="j" type="abbreviated">Oral surg. oral med. oral pathol. oral radiol. endo.</title><idno type="ISSN">1079-2104</idno><imprint><date when="2008">2008</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics</title><title level="j" type="abbreviated">Oral surg. oral med. oral pathol. oral radiol. endo.</title><idno type="ISSN">1079-2104</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animal</term><term>Dog</term><term>Early</term><term>Experimental study</term><term>Exposure</term><term>Implant</term><term>Osteopenia</term><term>Premature</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Ostéopénie</term><term>Prématuré</term><term>Exposition</term><term>Implant</term><term>Précoce</term><term>Etude expérimentale</term><term>Animal</term><term>Chien</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Objective. Several studies have reported on spontaneous early exposure of submerged implants, suggesting that exposed implants have greater bone loss than nonexposed implants. The purpose of this study was to compare the effects of implant-abutment connections and partial implant exposure on crestal bone loss around submerged implants. Study design. Bilateral, edentulated, flat alveolar ridges were created in the mandible of 6 mongrel dogs. After 3 months of healing, 2 fixtures were placed on each side of the mandible following a commonly accepted 2-stage surgical protocol. The fixtures on each side were randomly assigned to 1 of 2 procedures. In the first, a cover screw was connected to the fixture, and the incised gingiva was partially removed to expose the cover screw (partially exposed group). In the second, a healing abutment was connected to the fixture so that the coronal portion of the abutment remained exposed to the oral cavity (abutment-connected group). After 8 weeks, micro-computed tomography (micro-CT) at the implantation site was performed to measure the bone height in the peri-implant bone. Data were analyzed by Wilcoxon's signed rank test. Results. The average bone height was greater for the abutment-connected fixture (9.8 ± 0.5 mm) than for the partially exposed fixture (9.3 ± 0.5 mm; P <.05). Conclusion. These results suggest that when implant exposure is detected, the placement of healing abutments may help limit bone loss around the submerged implants.</div></front></TEI><affiliations><list><country><li>Corée du Sud</li></country></list><tree><country name="Corée du Sud"><noRegion><name sortKey="Yoo, Je Hyeon" sort="Yoo, Je Hyeon" uniqKey="Yoo J" first="Je-Hyeon" last="Yoo">Je-Hyeon Yoo</name></noRegion><name sortKey="Choi, Byung Ho" sort="Choi, Byung Ho" uniqKey="Choi B" first="Byung-Ho" last="Choi">Byung-Ho Choi</name><name sortKey="Feng Xuan" sort="Feng Xuan" uniqKey="Feng Xuan" last="Feng Xuan">FENG XUAN</name><name sortKey="Jeong, Seung Mi" sort="Jeong, Seung Mi" uniqKey="Jeong S" first="Seung-Mi" last="Jeong">Seung-Mi Jeong</name><name sortKey="Jeong, Seung Mi" sort="Jeong, Seung Mi" uniqKey="Jeong S" first="Seung-Mi" last="Jeong">Seung-Mi Jeong</name><name sortKey="Jingxu Li" sort="Jingxu Li" uniqKey="Jingxu Li" last="Jingxu Li">JINGXU LI</name><name sortKey="Jingxu Li" sort="Jingxu Li" uniqKey="Jingxu Li" last="Jingxu Li">JINGXU LI</name><name sortKey="Kim, Han Sung" sort="Kim, Han Sung" uniqKey="Kim H" first="Han-Sung" last="Kim">Han-Sung Kim</name><name sortKey="Ko, Chang Yong" sort="Ko, Chang Yong" uniqKey="Ko C" first="Chang-Yong" last="Ko">Chang-Yong Ko</name><name sortKey="Yoo, Je Hyeon" sort="Yoo, Je Hyeon" uniqKey="Yoo J" first="Je-Hyeon" last="Yoo">Je-Hyeon Yoo</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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