The association between oral hygiene and periodontitis: a systematic review and meta‐analysis

Abstract

Objective

Dental plaque accumulation and inadequate personal oral hygiene ( OH) are known major risk factors of periodontitis. Nevertheless, the magnitude of their effects has not yet been the subject of a meta‐analysis.

Material and methods

The Medline and Scopus databases were searched up to May 2016. Observational studies were eligible if they assessed associations between OH and periodontitis in adult subjects. A multivariate random‐effects meta‐analysis was used to pool the effects of fair/poor OH versus good OH on periodontitis across studies. The associations between oral care habits and periodontitis were also assessed.

Results

A total of 50 studies were eligible; 15 were used for pooling the effect of fair OH versus good OH and poor OH versus good OH on periodontitis, with pooled odds ratios ( ORs) of 2.04 [95% confidence interval ( CI): 1.65–2.53] and 5.01 (95% CI: 3.40–7.39), respectively. Eleven studies examined oral care habits measured according to toothbrushing regularity and dental visit frequency; pooled ORs of 0.66 (95% CI: 0.47–0.94) and 0.68 (95% CI: 0.47–0.98) were obtained, respectively.

Conclusions

Fair to poor OH increases the risk of periodontitis by two‐ to five‐fold. This risk can be reduced by regular toothbrushing and dental visits.