A 12-year-old boy presented to the orthodontic clinic with irregularity of his front teeth. Intraoral examination reveals class I molar relationship and crowding of maxillary and mandibular teeth. Orthodontic diagnosis is:: (A) Class I type 1, (B) Class I type 2, (C) Class I type 3, (D) Class I type 4
Answer is A. Dewey divided Angle’s class I into 5 types and Angle's class III into 3 types.