Fig. 3From: Factors affecting dental biofilm in patients wearing fixed orthodontic appliancesComparison of biofilm formation by sex, age group, and arch. Males had significantly more biofilm than females (P < 0.001). Children had significantly more biofilm than adults (P < 0.001). The maxillary arch had significantly more biofilm than the mandibular arch (P = 0.042)Back to article page