Fig. 4From: Parental perception on oral health-related quality of life and dental features of ectodermal dysplasia and isolated hypodontia in childrenBar chart comparing the frequency of the clinical tooth-site absences in the ED and IH groups. n = number of individuals. Y axis = number of clinical tooth-site absences (0–28); X axis = frequency (ie number of patients with that number of clinically absent tooth units)Back to article page