Posterior jaw bone resorption in osseointegrated implant‐supported overdentures
Identifieur interne : 00B249 ( Main/Exploration ); précédent : 00B248; suivant : 00B250Posterior jaw bone resorption in osseointegrated implant‐supported overdentures
Auteurs : R. Jacobs ; A. Schotte ; D. Van Steenberghe ; M. Quirynen ; I. Naert [Belgique]Source :
- Clinical Oral Implants Research [ 0905-7161 ] ; 1992-06.
Abstract
For several years, osseointegrated implant‐supported overdentures have been used in the rehabilitation of full edentulism with excellent results, at least in the lower jaw. This study involved 3 groups of patients with different prosthetic reconstructions:(1) mandibular overdentures supported by 2 implants connected by a bar (30 patients), (2) mandibular fixed prostheses supported by 4–6 implants (25 patients) and (3) mandibular complete dentures without implant support as controls (85 patients). The primary aim of this study was to examine on orthopantomograms (by means of the area index to minimize distortion and magnification errors), posterior mandibular ridge resorption in the 3 treatment groups. The present data demonstrated a minimal posterior mandibular ridge resorption in patients with fixed implant‐supported prostheses. A more considerableposterior ridge resorption was observed in the complete denture group and especially in the overdenture wearers. For the latter, the annual posterior jaw bone resorption after the post‐extraction remodeling period of 6 months, was 2‐ to 3‐fold that of full denture wearers. When patients were edentulous for more than 10 years, the difference between the 2 latter groups disappeared. It is suggested that although the overdenture design on 2 implants offers advantages from a financial and failure rate point of view, its indications in younger patients should cautiously be evaluated in a long‐term perspective concerning posterior mandibular bone resorption.
Url:
DOI: 10.1034/j.1600-0501.1992.030203.x
Affiliations:
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Jacobs</name><affiliation><wicri:noCountry code="no comma">Departments of Periodontology (Laboratory of Oral Physiology) and</wicri:noCountry></affiliation></author><author><name sortKey="Schotte, A" sort="Schotte, A" uniqKey="Schotte A" first="A." last="Schotte">A. Schotte</name><affiliation><wicri:noCountry code="no comma">Departments of Periodontology (Laboratory of Oral Physiology) and</wicri:noCountry></affiliation></author><author><name sortKey="Van Steenberghe, D" sort="Van Steenberghe, D" uniqKey="Van Steenberghe D" first="D." last="Van Steenberghe">D. Van Steenberghe</name><affiliation><wicri:noCountry code="no comma">Departments of Periodontology (Laboratory of Oral Physiology) and</wicri:noCountry></affiliation></author><author><name sortKey="Quirynen, M" sort="Quirynen, M" uniqKey="Quirynen M" first="M." last="Quirynen">M. 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Naert</name><affiliation wicri:level="1"><country xml:lang="fr">Belgique</country><wicri:regionArea>Prosthetic Dentistry, Faculty of Medicine, Catholic University of Leuven, Leuven</wicri:regionArea><wicri:noRegion>Leuven</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Clinical Oral Implants Research</title><title level="j" type="alt">CLINICAL ORAL IMPLANTS RESEARCH</title><idno type="ISSN">0905-7161</idno><idno type="eISSN">1600-0501</idno><imprint><biblScope unit="vol">3</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="63">63</biblScope><biblScope unit="page" to="70">70</biblScope><publisher>Munksgaard International Publishers</publisher><pubPlace>Copenhagen</pubPlace><date type="published" when="1992-06">1992-06</date></imprint><idno type="ISSN">0905-7161</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0905-7161</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">For several years, osseointegrated implant‐supported overdentures have been used in the rehabilitation of full edentulism with excellent results, at least in the lower jaw. This study involved 3 groups of patients with different prosthetic reconstructions:(1) mandibular overdentures supported by 2 implants connected by a bar (30 patients), (2) mandibular fixed prostheses supported by 4–6 implants (25 patients) and (3) mandibular complete dentures without implant support as controls (85 patients). The primary aim of this study was to examine on orthopantomograms (by means of the area index to minimize distortion and magnification errors), posterior mandibular ridge resorption in the 3 treatment groups. The present data demonstrated a minimal posterior mandibular ridge resorption in patients with fixed implant‐supported prostheses. A more considerableposterior ridge resorption was observed in the complete denture group and especially in the overdenture wearers. For the latter, the annual posterior jaw bone resorption after the post‐extraction remodeling period of 6 months, was 2‐ to 3‐fold that of full denture wearers. When patients were edentulous for more than 10 years, the difference between the 2 latter groups disappeared. It is suggested that although the overdenture design on 2 implants offers advantages from a financial and failure rate point of view, its indications in younger patients should cautiously be evaluated in a long‐term perspective concerning posterior mandibular bone resorption.</div></front></TEI><affiliations><list><country><li>Belgique</li></country></list><tree><noCountry><name sortKey="Jacobs, R" sort="Jacobs, R" uniqKey="Jacobs R" first="R." last="Jacobs">R. Jacobs</name><name sortKey="Quirynen, M" sort="Quirynen, M" uniqKey="Quirynen M" first="M." last="Quirynen">M. Quirynen</name><name sortKey="Schotte, A" sort="Schotte, A" uniqKey="Schotte A" first="A." last="Schotte">A. Schotte</name><name sortKey="Van Steenberghe, D" sort="Van Steenberghe, D" uniqKey="Van Steenberghe D" first="D." last="Van Steenberghe">D. Van Steenberghe</name></noCountry><country name="Belgique"><noRegion><name sortKey="Naert, I" sort="Naert, I" uniqKey="Naert I" first="I." last="Naert">I. Naert</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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