Abstract:

Periodontal ultrasonic instrumentation can remove calculus and dental plaque biofilm because of its highly frequent oscillations，cavitation and acoustic microstreaming effect. It is necessary to fully understand the theory and technique. This paper reviews the theory of periodontal ultrasonic instrument and possible factors influencing root surface defects.

Key words: periodontal disease, periodontal ultrasonic instrumentation, scaler tip, root surface defect

摘要：

牙周超声治疗是通过工作尖高频振荡产生的作用力、空穴效应和微流力等作用，达到清除牙石和菌斑的目的。如何在保证清除效率的同时最大限度减少对根面牙骨质的损伤，需要我们对牙周超声治疗仪的类型、结构和操作规范有全面的了解。文章就牙周超声治疗仪的类型及操作过程中工作尖可能对牙根表面产生损伤的影响因素做一综述。

关键词: 牙周病, 牙周超声治疗, 工作尖, 根面损伤