Assessment of the validity of two plaque indices.
The validity of the Podshadley and Haley Patient Hygiene Performance Index (PHPI) and the Silness and Löe Index (PlI) was investigated. Fifty children aged 11-12 years were examined by a single examiner and plaque collected from all accessible smooth surfaces, and dry weight determined. Statistically, there were significant positive correlations between plaque dry weight and PlI (r = 0.61) & PHPI (r = 0.63). The results indicate that both indices were equally good indicators of the amount of plaque on accessible smooth surfaces.
D002648:Child; D003773:Dental Plaque / Q000032:analysis / Q000473:pathology*; D006801:Humans; D014070:Tooth / Q000473:pathology