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对被卡环磨损了颊舌两侧的656颗基牙(属于232人的295件义齿)进行了调查分析。结果表明:戴牙时间越久则磨损越重,主要原因是基牙与卡环的摩擦过多,还有卡环位置不当。本文还提出了一些减少磨损的措施。
A total of 656 abutments (295 dentures belonging to 232 persons) that had been worn by the snap ring on both sides of the buccal tongue were investigated. The results showed that wearing the teeth longer the more wear and tear, the main reason is the friction between the abutment and the snap ring too much, as well as snap ring position improper. This article also suggests some measures to reduce wear.