Lie T, Meyer K
J Clin Periodontol. 1977 Nov;4(4):250-62. doi: 10.1111/j.1600-051x.1977.tb01897.x.
The efficiency of calculus removal and the amount of lost tooth substance resulting from the use of hand curette, ultrasonic curette and rotating diamond and Roto-Pro points were examined by scanning electron microscopy (SEM). Root surfaces of mandibular incisors placed in a jaw model were cleaned of adhering deposits, photographed by SEM and evaluated at a standard magnification by three examiners. Scores were given for remaining calculus (RCI) and loss of tooth substance (LTSI) according to defined index criteria. The results revealed that calculus removal was most complete following diamond instrumentation, whereas the ultrasonic curette was least efficient in this respect. Hand curette, ultrasonic curette and Roto-Pro removed about the same amount of tooth substance whereas the diamond removed considerably more than the others. The diamond regularly removed all the cementum and left deep instrumental marks in the dentin; it seems advisable to avoid the use of such instruments in periodontal depuration.
通过扫描电子显微镜（SEM）检查了使用手动刮治器、超声刮治器、旋转金刚砂和Roto-Pro尖去除牙结石的效率以及由此导致的牙体组织损失量。将置于颌骨模型中的下颌切牙的牙根表面清除附着的沉积物，用SEM拍照，并由三名检查人员在标准放大倍数下进行评估。根据定义的指数标准给出剩余牙结石（RCI）和牙体组织损失（LTSI）的分数。结果显示，使用金刚砂器械后牙结石清除最为彻底，而超声刮治器在这方面效率最低。手动刮治器、超声刮治器和Roto-Pro去除的牙体组织量大致相同，而金刚砂去除的牙体组织比其他器械多得多。金刚砂通常会去除所有牙骨质，并在牙本质中留下较深的器械痕迹；在牙周洁治中似乎不宜使用此类器械。
