OBJECTIVE: To describe the ultrastructure of the interface between periodontal tissues and titanium mini-implants in rat mandibles. MATERIALS AND METHODS: A titanium mini-implant was placed between the buccal roots of the mandibular first molar of 24 adult rats. After 21, 30, 45, 60, 90, and 120 days of implantation, the mandibular portion was removed and fixed in cacodylate-buffered 2% glutaraldehyde + 2.5% formaldehyde. The material was decalcified and processed for scanning and transmission electron microscopy. RESULTS: Ultrastructural analysis revealed a thin cementum-like layer at longer times after implantation at the areas in which the periodontal ligament was in contact with the implant. CONCLUSIONS: The alveolar bone and the periodontal ligament reorganized their constituents around the implant, and a thin cementum-like layer was formed at longer times after implantation at the areas in which the periodontal ligament was in contact with the implant.
OBJECTIVE: To describe the ultrastructure of the interface between periodontal tissues and titanium mini-implants in rat mandibles. MATERIALS AND METHODS: A titanium mini-implant was placed between the buccal roots of the mandibular first molar of 24 adult rats. After 21, 30, 45, 60, 90, and 120 days of implantation, the mandibular portion was removed and fixed in cacodylate-buffered 2% glutaraldehyde + 2.5% formaldehyde. The material was decalcified and processed for scanning and transmission electron microscopy. RESULTS: Ultrastructural analysis revealed a thin cementum-like layer at longer times after implantation at the areas in which the periodontal ligament was in contact with the implant. CONCLUSIONS: The alveolar bone and the periodontal ligament reorganized their constituents around the implant, and a thin cementum-like layer was formed at longer times after implantation at the areas in which the periodontal ligament was in contact with the implant.
Authors: Emeka Nkenke; Bernhard Lehner; Konstanze Weinzierl; Ulf Thams; Jörg Neugebauer; Helmut Steveling; Martin Radespiel-Tröger; Friedrich Wilhelm Neukam Journal: Clin Oral Implants Res Date: 2003-06 Impact factor: 5.977