Wennerberg A, Albrektsson T, Andersson B, Krol J J
Biomaterials Group, Department of Handicap Research, University of Göteborg, Sweden.
Clin Oral Implants Res. 1995 Mar;6(1):24-30. doi: 10.1034/j.1600-0501.1995.060103.x.
Screw-shaped implants with 3 different surface topographies, evidenced visually as well as numerically with an optical profilometer, were inserted in rabbit bone. After a healing period of 12 weeks, a statistically significant higher removal torque was needed to unscrew screws blasted with 25-microns TiO2 particles and screws blasted with 75-microns particles of AI2O3 compared with screws with a turned surface. The histomorphometric evaluation demonstrated a higher percentage of bone-to-metal contact for implants blasted with 25-microns particles of TiO2 compared with the as-machined implants. A greater surface area of bone in threads was found for the turned screws compared with screws blasted with 25-microns TiO2 particles. In the short-term follow-up, there was a better fixation of implants with an average surface roughness of 0.9-1.3-microns and with a homogeneous surface structure than of implants with an average surface roughness of 0.4 microns and with a clear direction of the surface pattern.
将具有3种不同表面形貌的螺旋形植入物插入兔骨中，这些形貌通过光学轮廓仪在视觉和数值上都得到了证实。在12周的愈合期后，与表面经过车削处理的螺钉相比，用25微米二氧化钛颗粒喷砂处理的螺钉和用75微米氧化铝颗粒喷砂处理的螺钉拧出时需要具有统计学意义的更高的拆除扭矩。组织形态计量学评估表明，与加工后的植入物相比，用25微米二氧化钛颗粒喷砂处理的植入物的骨-金属接触百分比更高。与用25微米二氧化钛颗粒喷砂处理的螺钉相比，车削螺钉在螺纹中的骨表面积更大。在短期随访中，平均表面粗糙度为0.9-1.3微米且表面结构均匀的植入物比平均表面粗糙度为0.4微米且表面图案有明显方向的植入物具有更好的固定效果。
