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[Bioresorbable barrier membranes for guided bone regeneration around dental implants].
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- Author(s): Kohal RJ;Kohal RJ; Hürzeler MB
- Source:
Schweizer Monatsschrift fur Zahnmedizin = Revue mensuelle suisse d'odonto-stomatologie = Rivista mensile svizzera di odontologia e stomatologia [Schweiz Monatsschr Zahnmed] 2002; Vol. 112 (12), pp. 1222-9.- Publication Type:
Comparative Study; Evaluation Study; Journal Article- Language:
German - Source:
- Additional Information
- Transliterated Title: Bioresorbierbare Membranbarrieren für die geführte Knochenregeneration um dentale Implantate. Eine Pilotuntersuchung am Beagle-Hund.
- Source: Publisher: Schweizerische Zahnärzte-Gesellschaft Country of Publication: Switzerland NLM ID: 8709597 Publication Model: Print Cited Medium: Print ISSN: 0256-2855 (Print) Linking ISSN: 02562855 NLM ISO Abbreviation: Schweiz Monatsschr Zahnmed Subsets: MEDLINE
- Publication Information: Original Publication: [Bern : Schweizerische Zahnärzte-Gesellschaft, 1987-
- Subject Terms: Bone Regeneration* ; Dental Implants* ; Membranes, Artificial*; Alveolar Bone Loss/*surgery ; Dental Implantation, Endosseous/*adverse effects ; Guided Tissue Regeneration, Periodontal/*methods; Absorbable Implants ; Analysis of Variance ; Animals ; Biocompatible Materials ; Calcium Phosphates ; Dogs ; Mandible ; Polyesters ; Polytetrafluoroethylene
- Abstract: The aim of this study was to evaluate the efficacy of two bioresorbable barriers especially produced for guided bone regeneration. Six beagle dogs were used in this investigation. At the beginning of the study, all mandibular premolars were extracted and after a healing period of three months three screw-type machined implants were inserted in each side of the mandible. At the buccal aspect of each implant bed a dehiscence type defect with a coronoapical and mesiodistal extension of 5 mm was created. Then, one of the following four methods for defect treatment was applied: 1) guided bone regeneration (GBR) with a bioresorbable barrier (poly-L/DL-lactide) (test group 1), 2) GBR with a bioresorbable composite barrier [poly-L/DL-lactide reinforced with tricalciumphosphate (TCP)] (test group 2), 3) GBR with an expanded polytetrafluoroethylene barrier (GTAM) (control group 1), and 4) no treatment (control group 2). The animals were sacrificed six months after implant installation. During the healing period the most common problems encountered in the test groups 1 and 2 were soft tissue dehiscences and bioresorbable membrane exposures. Retrieved tissue specimens were processed for histological and histometric evaluation. The mean amount of vertical bone regeneration at the defect areas was 1.75 mm for test group 1, 1.82 mm for the test group 2, 2.38 mm for control group 1, and 1.93 mm for control group 2. When the amount of bone regeneration in contact to the implant surface was evaluated, the regeneration result was 1.45 mm for test group 1, 1.49 mm for test group 2, 2.08 mm for control group 1, and 0.91 mm for control group 2. For both measurements, no statistically significant differences could be observed between the different groups. The present animal experiment showed that the treatment of dehiscence type defects around machined implants with the two bioresorbable barriers showed only slightly superior results compared to the treatment without barriers (control group 2). The best results--although not statistically significant different from the other treatment groups--were obtained when nonresorbable barriers were used.
- Accession Number: 0 (Biocompatible Materials)
0 (Calcium Phosphates)
0 (Dental Implants)
0 (Membranes, Artificial)
0 (Polyesters)
0 (beta-tricalcium phosphate)
459TN2L5F5 (poly(lactide))
9002-84-0 (Polytetrafluoroethylene)
K4C08XP666 (tricalcium phosphate) - Publication Date: Date Created: 20030215 Date Completed: 20030304 Latest Revision: 20191210
- Publication Date: 20221213
- Accession Number: 12585214
- Transliterated Title:
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