PMID: 20635045Jul 17, 2010Paper

The influence of chemically-modified SLA on bone defect healing around implants in dogs

Shanghai kou qiang yi xue = Shanghai journal of stomatology
Xiao-fei LvHong-Chang Lai

Abstract

The study was designed to investigate the effect of surface chemical modification on the process of bone defect healing around implants in dogs. Six Beagle dogs were used in this study. The mandibular premolars and first molars were extracted bilaterally. Three months after tooth extraction the procedure of implant placement was performed. Four canals with a diameter of 2.8 mm and 10 mm in depth were prepared at the third premolar (P3) and the first molar (M1) sites of both sides of the mandible, of which the coronal 5 mm portion were further widened with the 5.3 mm diameter twist drill. In each side of the mandible one modSLA (chemically-modified SLA) implant and one SLA (sandblasted, large-grit, acid-etched) implant with a diameter of 3.3 mm and 10 mm in length were installed, respectively. Thus, the circumferential defect that was 5mm deep and 1mm wide created between the implant surface and the bony wall. Four implants placed in both sides of the mandible were allowed for non-submerged healing. Two dogs were sacrificed at the week 2, 4 and 8 following implant placement, respectively, and the specimens were prepared and stained with trinitrophenol- fuchsin for histological and histomorphometric analyses to acquire the bone-t...Continue Reading

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