Influence of interimplant distance on bone microstructure: a histomorphometric study in dogs.

摘要: The microstructure of the crestal alveolar bone is important for both maintenance osseointegration and location gingival soft tissues. aim this study was to evaluate compare interimplant in implants inserted at different distances. mandibular bilateral premolars six dogs were extracted, after 12 weeks, each dog received eight implants, a total 48 implants. Two pairs one hemiarch, separated by 2 mm (group 1) 3 2). After temporary acrylic prostheses. four more metallic crowns substituted an additional 8 weeks animals sacrificed hemimandibles removed, dissected, processed. longitudinal collagen fiber orientation 43.2% bone; it 30.3% 2-mm group 43.9% 3-mm group. There statistically significant difference between groups (p < .05). transverse fibers 47.8% 37.3% 56.3% marrow spaces 34.87% bone, 52.3% group, 59.9% low mineral density index 36.29 46.76 17.91 high 87.57 72.58 84.91 resulted differences compared with bone. appeared significantly increased higher while In conclusion, distance should not be less than mm.