A 20 year old male patient, is unhappy with the appearance of his front tooth and wants to get it straightened. According to Lischer’s modification, the central incisor can be aptly classified as:

Lischer in 1933 further modified Angle’s classification by giving substitute names: CL I (Neutrocclusion) CL II (Distocclusion)  CL III (Mesiocclusion)  He also proposed terms to designate individual tooth malposition: Mesioversion: Mesial to normal position Distoversion: Distal to normal position Linguoversion: Crossbite Labioversion: Increased overjet Infraversion: Submerged tooth Supraversion: Supraerupted tooth Axiversion: Abnormal inclination Torsiversion: Rotated tooth Transversion: Transposed tooth Perversion: Impacted tooth Ref: Kharbanda OP. Orthodontics: Diagnosis of & Management of Malocclusion & Dentofacial Deformities. 3rd edition page 333 Image: Kotha SB. Intra-alveolar auto-transplantation to correct a single tooth rotation: A case report with four years of follow-up. Saudi Journal of Oral Sciences. 2014 Jul 1;1(2):110.