An Evaluation of Clinical Effects on Endosseous Dental Implant Part ──ⅲ. An Observation of the Bacteria in the Subgingival Groove 骨内牙种植体临床效果评价&Ⅲ.龈下细菌定植观察
The teeth were randomly divided into 3 groups each for 10 teeth: the dental structure around the posts was drilled with bur to produce a groove with depth of 4mm in the first group; 30颗牙随机分为三组,10颗牙不作处理作为对照:10颗牙使用机用钻针在桩周围切割出4mm深的一圈窄沟;