Angelini E
Polytechnic of Turin, Italy.
Quintessence Int. 1992 Mar;23(3):215-22.
Ball bearings of high-speed dental handpieces were sterilized by various procedures and examined under scanning electron microscopy for evidence of corrosion. The metallic parts of ball bearings (rings and spheres), if not correctly lubricated, were dramatically corroded in chemical vapor and steam sterilizer. The nonmetallic parts (the retainers made of phenolic resins) appeared to be more sensitive to heat treatments, as revealed by the occurrence of darkening and embrittlement phenomena. In the absence of correct lubrication procedures, the performance of high-speed dental handpieces appears to be adversely influenced by sterilization, mostly in wet environments. On the other hand, daily maintenance that follows the manufacturer's instructions reduces and delays the damage to a great extent.
高速牙科手机的滚珠轴承通过各种程序进行消毒，并在扫描电子显微镜下检查是否有腐蚀迹象。滚珠轴承的金属部件（环和球）如果润滑不当，在化学蒸汽和蒸汽灭菌器中会严重腐蚀。非金属部件（由酚醛树脂制成的保持架）似乎对热处理更敏感，这表现为出现变黑和脆化现象。在没有正确润滑程序的情况下，高速牙科手机的性能似乎会受到消毒的不利影响，在潮湿环境中尤其如此。另一方面，按照制造商的说明进行日常维护可以在很大程度上减少和延缓损坏。
