USING RESTORATIONS BORNE TOTALLY BY ANTERIOR IMPLANTS TO PRESERVE THE EDENTULOUS MANDIBLE
| Autor: | Michael W. Marshall, David A. Hochwald, Ronald M. Kaminishi, Peter S. Lam, W. Howard Davis, Wendy Dorchester |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Adult
Dental Stress Analysis Male Bone Regeneration medicine.medical_treatment Alveolar Bone Loss Denture Complete Lower Dentistry Mandible Weight-Bearing medicine Humans Jaw Edentulous Bone height General Dentistry Aged Retrospective Studies Aged 80 and over business.industry Edentulous mandible Middle Aged Radiography Dental Prosthesis Design Female Dental Prosthesis Implant-Supported sense organs Dentures business |
| Zdroj: | The Journal of the American Dental Association. 130:1183-1189 |
| ISSN: | 0002-8177 |
| DOI: | 10.14219/jada.archive.1999.0372 |
| Popis: | This study quantifies the changes in bone height of the posterior area of the edentulous mandible when the load of complete dentures is borne entirely by anteriorly placed osseointegrated implants.Thirty-three patients, of whom there were radiographs from the beginning of implant loading and from a follow-up visit at least three years later (a mean of 6.6 years later), were included in the study. Working with panoramic radiographs, the authors took height measurements in the premolar area (15 millimeters distal to the most distal implants). A valid correction factor was available because implants of known length were proximal to the area being evaluated.The authors calculated descriptive statistics using means, standard deviations, medians and proportions as appropriate. A P-value of less than .05 was considered significant. Of the 33 subjects, most showed increases in bone height--29 (87.9 percent) on the right side and 28 (84.9 percent) on the left side. The mean change in all subjects was +1.0 mm (range -0.8 to +3.3 mm). A comparison of mandibular height at implant placement vs. follow-up showed a statistically significant increase bilaterally (P.001).This study demonstrates that dentures for edentulous mandibles that are borne totally by implants in the anterior area conserve or enhance the bone of the posterior portion of the mandible. An important future study should test the effect of implant-assisted restorations for the edentulous mandible that load the posterior ridge (a bar clasp, for example).One of the considerations in planning treatment for the edentulous mandible should be the preserving effect of totally implant-borne restorations vs. the continued resorption of the body of the mandible with conventional dentures. |
| Databáze: | OpenAIRE |
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