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- Title
Influence of Interim plant Distance on Gingival Papilla Formation and Bone Resorption: Clinical-Radiographic Study in Dogs.
- Authors
Novaes, Jr, Arthur B.; Papalexiou, Vula; Muglia, Valdir; Taba, Jr, Mário
- Abstract
Purpose: The purpose of this study was to evaluate in dogs the area between implants after prosthetic restoration within 5 mm distance between the contact point (CP) between crowns and the bone crest (BC). Materials and Methods: The mandibular premolars of 6 dogs were extracted bilaterally. After 12 weeks of healing, each dog received 8 implants. On each side, 2 implants were separated by 2 mm (group 1) and 2 by 3 mm (group 2). After a healing period (3 months), the implants were restored with temporary acrylic resin prostheses and after 4 more weeks, with definitive metallic prostheses. After 8 weeks, the distance between the CP and the papilla (P) was measured. The distance between a line extending from the CP and the gin gival height at the distal extension of the prosthesis (DE) was also measured. Digital radiographic images were obtained for evaluation of the CP-BC and BC-P distances and the analysis of bone resorption adjacent to the implant surfaces. Results: The median CP-P distances were 1.75 mm and 1.98 mm for groups 1 and 2, respectively; the median CP-DE distances were 2.60 and 2.69, respectively. The mean CP-BC distances were 5.64 mm and 6.45 mm, for groups 1 and 2, respectively; mean BC-P distances were 3.07 mm and 3.55 mm, respectively. Discussion and Conclusions: The differences in distances of 2 and 3 mm between implants did not present significant differences in the formation of papillae or in crestal resorption. The CP-BC distances for prostheses should be different from those of natural teeth because in natural teeth, the biologic width is already present, and in the case of implant-supported prostheses, it will develop following second-stage surgery.
- Subjects
BONE resorption; BONE remodeling; BONE diseases; ACRYLIC resins; DENTITION; DENTAL implants
- Publication
International Journal of Oral & Maxillofacial Implants, 2006, Vol 21, Issue 1, p45
- ISSN
0882-2786
- Publication type
Article