Bader H I, Boyd R L
Department of Orthodontics, School of Dentistry, University of the Pacific, San Francisco, CA 94115, USA.
Am J Dent. 1999 Jun;12(3):143-7.
To compare the efficacy of two powered brushing instruments (Rota-dent, rotary action instrument and Sonicare, a sonic instrument) for reductions of plaque and gingivitis in a treated adult periodontal patient population.
Forty patients, randomly selected from a pool of patients in periodontal maintenance after surgical periodontal treatment, completed this study. A split mouth, blind, crossover design was utilized in this 12-week trial with each patient acting as his/her own control. After subjects alternately brushed one-half of their mouths with each of the instruments; a crossover in the brushing pattern occurred at 6 weeks, with no wash out period. Single-blind clinical assessments were made by a calibrated investigator at six sites per tooth for contralateral incisors, premolars and molars at baseline, 6 and 12 weeks. Gingival Index (GI), Plaque Index (PI) and Papillary Bleeding Index (PBI) were determined. A prophylaxis was done for all subjects after baseline recordings.
Mean percent reductions from baseline for GI, PI and PBI at the end of 6 and 12 weeks were 75.0%, 68.9%, 73.4% and 76.4%, 69.9%, 74.0%, respectively for the rotary instrument, and 57.7%, 53.3%, 54.3% and 57.7%, 53.6%, 54.7%, respectively for the sonic brush. One-way ANOVA indicated that the rotary instrument was significantly more effective (P < 0.005) than the sonic brush in removing plaque and reducing gingivitis in treated adult periodontitis patients.
比较两种电动刷牙器械（旋转式洁牙器Rota-dent和声波震动牙刷Sonicare）对已接受治疗的成年牙周病患者减少牙菌斑和牙龈炎的效果。
从接受牙周手术后处于牙周维护期的患者群体中随机选取40名患者完成本研究。在这项为期12周的试验中采用了双侧对照、盲法、交叉设计，每位患者作为自己的对照。受试者用每种器械交替刷半口牙；6周时刷牙方式交叉，无洗脱期。由一名经过校准的研究人员在基线、6周和12周时对每颗牙齿的对侧切牙、前磨牙和磨牙的六个部位进行单盲临床评估。测定牙龈指数（GI）、菌斑指数（PI）和龈乳头出血指数（PBI）。在基线记录后对所有受试者进行了一次预防性洁治。
6周和12周结束时，旋转式器械的GI、PI和PBI相对于基线的平均降低百分比分别为75.0%、68.9%、73.4%和76.4%、69.9%、74.0%，声波震动牙刷的相应数据分别为57.7%、53.3%、54.3%和57.7%、53.6%、54.7%。单因素方差分析表明，在已接受治疗的成年牙周炎患者中，旋转式器械在去除牙菌斑和减少牙龈炎方面比声波震动牙刷显著更有效（P < 0.005）。
