title: A comparison of three methods of measuring maximal opening of the mouth.
abstract: Two extraoral techniques are compared with a direct technique for measuring maximal opening of the mouth. The extraoral techniques allow recording of the variable independent of the teeth. The accuracy and precision of the three techniques are calculated and compared statistically, and the significance of the results are discussed.
mesh_terms: D000293:Adolescent; D000328:Adult; D003768:Dental Occlusion, Centric; D005260:Female; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology; D008297:Male; D009055:Mouth / Q000033:anatomy & histology* / Q000502:physiology; D009068:Movement; D014716:Vertical Dimension