Anchorage of titanium implants with different surface characteristics: an experimental study in rabbits.

摘要: Purpose: To compare the anchorage of titanium implants with different surface roughness and topography to examine histologically peri-implant bone after implant removal. Materials Methods: Screw five topographies were examined: (1) turned (“machined”), (2) TiO2-blasted particles grain size 10 53 μm; (3) TiO2-blasted, 63 90 (4) 125 (5) plasma-sprayed (TPS). The was determined by use an optical instrument. Twelve rabbits, divided into two groups, had a total 120 inserted in tibiae. One from each categories placed within left tibia rabbit. By second operation, installed right tibia, 2 weeks group A 3 B. Fluorochrome labeling performed 1 weeks. Removal torque (RMT) tests 4 surgery 9 Thus, A, healing groups created, representing 6 weeks, respectively. corresponding B 12 tibiae removed, site dissected, fixed, embedded light-curing resin. Ground sections made, analyzed using fluorescence light microscopy. Results: The lowest Sa Sy values, whereas highest scores recorded for TPS implants. values higher when larger been used blasting. At all four observation intervals, RMT scores. differences between various were, general, small, but screws largest value at 6, 9, than lower values. The histologic analysis revealed that fractures or ruptures present marginal, cortical bone. In such categories, frequently found zone old newly formed bone, as well bone. Conclusions: study demonstrated clear relation exists roughness, described assessed measurements. appeared increase maturation tissue during healing.