AN INVITRO INVESTIGATION ON THE LOSS OF ROOT SUBSTANCE IN SCALING WITH VARIOUS INSTRUMENTS
AN INVITRO INVESTIGATION ON THE LOSS OF ROOT SUBSTANCE IN SCALING WITH VARIOUS INSTRUMENTS
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DOI：
10.1111/j.1600-051x.1991.tb00104.x
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发表时间：
1991-10-01
影响因子：
6.7
通讯作者：
RATEITSCHAK, KH
中科院分区：
文献类型：
--
作者：
RITZ, L;HEFTI, AF;RATEITSCHAK, KH
对于除菌斑和牙石清创外，在牙根表面矫治过程中需要清除多少牙根骨质，存在不同的意见。同样，单个器械去除的牙齿材料的数量也不清楚，但近年来发展了一种损害较小的根表面清创方法的趋势。本体外研究的目的是测定仪器、手刮、超声刮、空气刮和细粒金刚石刮4种不同方法去除牙根物质的量。使用特制的测量仪测量90个下颚门牙360个位置的牙物质流失，并在临床适当的用力下进行12次工作击打。与空气除垢器（93.5 mu-m）、拔管除垢器（108.9 mu-m）和金刚石除垢器（118.7 mu-m）相比，超声波除垢器只去除了一层很薄的根部物质（11.6 mu-m）。
There are differing opinions as to the extent to which root cementum has to be removed during root surface instrumentation over and above that of the debridement of plaque and calculus. Similarly, the amount of tooth material removed by individual instruments is also unclear, but a trend towards less damaging methods of root surface debridement has evolved in recent years. The purpose of this in vitro study was to determine the amounts of root substance removed by 4 different methods of instrumentation, hand curette, ultrasonic scaler, airscaler and fine grit diamond bur. Measurement of tooth substance loss was carried out with a specially constructed measuring device at 360 sites on 90 mandibular incisors following 12 working strokes with a clinically appropriate force of application. Only a thin layer of root substance (11.6-mu-m) was removed by the ultrasonic scaler, compared to the much greater losses sustained with the airscaler (93.5-mu-m), the curette (108.9-mu-m) and the diamond bur (118.7-mu-m).