Data sources The Study of Health in Pomerania (SHIP).

Data extraction and synthesis Data were taken from SHIP1 to SHIP3 over an 11 year period. Mixed-effects linear regression models were constructed between the exposure (manual versus powered toothbrush) and outcome variables (probing depths [PD], clinical attachment loss [CAL], caries status DMFS and DFS, tooth loss) adjusting for potential baseline covariates.

Results Power toothbrush usage was found to be significantly associated with reduced mean PD and CAL progression scores, for example after 11 years the entire sample showed MTB users to have 0.41 mm PD mean progression while PTB users had 0.09 mm mean PD progression. This demonstrates PTB users having 0.32 mm less PD progression. Similar trends were shown for CAL mean scores.

Conclusions There are benefits of power toothbrush usage and long term protective effects on oral health in terms of reduced probing depths, clinical attachments and number of teeth lost.

数据来源：《波美拉尼亚卫生研究》（SHIP）。

数据提取和综合在11年的时间里，从SHIP1到SHIP3采集了数据。在暴露量（手动牙刷与电动牙刷）和结果变量（探测深度[PD]，临床附着力丧失[CAL]，龋齿状态DMFS和DFS，牙齿脱落）之间建立了混合效果线性回归模型，以调整潜在的基线协变量。

结果发现电动牙刷的使用与降低的平均PD和CAL进展评分显着相关，例如，在11年后，整个样本显示MTB用户的PD平均进展为0.41 mm，而PTB用户的PD平均进展为0.09 mm。这表明PTB用户的PD进展减少0.32 mm。CAL平均得分也显示出相似的趋势。

结论电动牙刷的使用以及对口腔健康的长期保护作用，可减少探测深度，减少临床依恋和减少牙齿脱落，因此具有一定的优势。