Mineralized bone loss in partially edentulous trabeculae of ovariectomized rabbit mandibles
Identifieur interne : 002122 ( Main/Exploration ); précédent : 002121; suivant : 002123Mineralized bone loss in partially edentulous trabeculae of ovariectomized rabbit mandibles
Auteurs : T. Cao [Singapour] ; T. Shirota [Japon] ; K. Ohno [Japon] ; K. I. Michi [Japon]Source :
- Journal of periodontal research [ 0022-3484 ] ; 2004.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Lapin.
English descriptors
- KwdEn :
Abstract
Objective: The purpose of this study was to evaluate trabeculae changes in partially edentulous bone in ovariectomized rabbits. Background: Numerous clinical studies have suggested that the greater risk for oral bone loss in females may be correlated with osteoporosis after menopause. Knowledge of trabecular changes in partially edentulous bone in animals with loss of ovarian function may be beneficial in the diagnosis and treatment of partially edentulous patients of postmenopausal women. Methods: Twelve adult female Japanese white rabbits were examined. The mandibular incisors were initially extracted to simulate the partially edentulous bone. Six animals were bilaterally ovariectomized and the other six sham-ovariectomized 12 weeks after tooth extraction. The partially edentulous parts of distal mandibular bodies were processed undecalcified 12 weeks after ovariectomized or sham-ovariectomized surgeries and examined by quantitative trabecular bone histomorphometry. Results: In ovariectomized rabbits, there were significant increases in trabecular separation, osteoid volume, osteoid thickness, osteoid width, eroded surface, and mineral apposition rate, and a significant decrease in trabecular number. Conclusion: The results of sparser trabecular structure, more trabecular osteoid, and increased trabecular bone turnover demonstrate mineralized bone loss in partially edentulous trabeculae of ovariectomized rabbit mandibles and suggest that the same loss may occur in postmenopausal women.
Affiliations:
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Shirota</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>First Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University</s1><s2>Tokyo</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Japon</country><placeName><settlement type="city">Tokyo</settlement><region type="région">Région de Kantō</region></placeName></affiliation></author><author><name sortKey="Ohno, K" sort="Ohno, K" uniqKey="Ohno K" first="K." last="Ohno">K. Ohno</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>First Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University</s1><s2>Tokyo</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Japon</country><placeName><settlement type="city">Tokyo</settlement><region type="région">Région de Kantō</region></placeName></affiliation></author><author><name sortKey="Michi, K I" sort="Michi, K I" uniqKey="Michi K" first="K. I." last="Michi">K. I. 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Cao</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Faculty of Dentistry, National University of Singapore</s1><s3>SGP</s3><sZ>1 aut.</sZ></inist:fA14><country>Singapour</country><orgName type="university">Université nationale de Singapour</orgName></affiliation></author><author><name sortKey="Shirota, T" sort="Shirota, T" uniqKey="Shirota T" first="T." last="Shirota">T. Shirota</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>First Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University</s1><s2>Tokyo</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Japon</country><placeName><settlement type="city">Tokyo</settlement><region type="région">Région de Kantō</region></placeName></affiliation></author><author><name sortKey="Ohno, K" sort="Ohno, K" uniqKey="Ohno K" first="K." last="Ohno">K. Ohno</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>First Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University</s1><s2>Tokyo</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Japon</country><placeName><settlement type="city">Tokyo</settlement><region type="région">Région de Kantō</region></placeName></affiliation></author><author><name sortKey="Michi, K I" sort="Michi, K I" uniqKey="Michi K" first="K. I." last="Michi">K. I. Michi</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>First Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University</s1><s2>Tokyo</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Japon</country><placeName><settlement type="city">Tokyo</settlement><region type="région">Région de Kantō</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Journal of periodontal research</title><title level="j" type="abbreviated">J. periodontal res.</title><idno type="ISSN">0022-3484</idno><imprint><date when="2004">2004</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of periodontal research</title><title level="j" type="abbreviated">J. periodontal res.</title><idno type="ISSN">0022-3484</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animal</term><term>Bone</term><term>Density</term><term>Dentistry</term><term>Mandible</term><term>Ovariectomy</term><term>Rabbit</term><term>Stomatology</term><term>Treatment</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Os</term><term>Ovariectomie</term><term>Animal</term><term>Lapin</term><term>Mandibule</term><term>Stomatologie</term><term>Dentisterie</term><term>Densité</term><term>Traitement</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Lapin</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Objective: The purpose of this study was to evaluate trabeculae changes in partially edentulous bone in ovariectomized rabbits. Background: Numerous clinical studies have suggested that the greater risk for oral bone loss in females may be correlated with osteoporosis after menopause. Knowledge of trabecular changes in partially edentulous bone in animals with loss of ovarian function may be beneficial in the diagnosis and treatment of partially edentulous patients of postmenopausal women. Methods: Twelve adult female Japanese white rabbits were examined. The mandibular incisors were initially extracted to simulate the partially edentulous bone. Six animals were bilaterally ovariectomized and the other six sham-ovariectomized 12 weeks after tooth extraction. The partially edentulous parts of distal mandibular bodies were processed undecalcified 12 weeks after ovariectomized or sham-ovariectomized surgeries and examined by quantitative trabecular bone histomorphometry. Results: In ovariectomized rabbits, there were significant increases in trabecular separation, osteoid volume, osteoid thickness, osteoid width, eroded surface, and mineral apposition rate, and a significant decrease in trabecular number. Conclusion: The results of sparser trabecular structure, more trabecular osteoid, and increased trabecular bone turnover demonstrate mineralized bone loss in partially edentulous trabeculae of ovariectomized rabbit mandibles and suggest that the same loss may occur in postmenopausal women.</div></front></TEI><affiliations><list><country><li>Japon</li><li>Singapour</li></country><region><li>Région de Kantō</li></region><settlement><li>Tokyo</li></settlement><orgName><li>Université nationale de Singapour</li></orgName></list><tree><country name="Singapour"><noRegion><name sortKey="Cao, T" sort="Cao, T" uniqKey="Cao T" first="T." last="Cao">T. Cao</name></noRegion></country><country name="Japon"><region name="Région de Kantō"><name sortKey="Shirota, T" sort="Shirota, T" uniqKey="Shirota T" first="T." last="Shirota">T. Shirota</name></region><name sortKey="Michi, K I" sort="Michi, K I" uniqKey="Michi K" first="K. I." last="Michi">K. I. Michi</name><name sortKey="Ohno, K" sort="Ohno, K" uniqKey="Ohno K" first="K." last="Ohno">K. Ohno</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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