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A biometric guide to prosthetic tooth positioning investigated in subjects with Class II division 2 incisor
A Agarwal1, J A Howlett, P G Howell
1Department of Prosthetic Dentistry, Eastman Dental Institute, 256 Gray's Inn Road, London WC1X 8LD, U.K.
Abstract:
A biometric guide for positioning of the maxillary central incisors in complete dentures is the incisor-incisive papilla distance. This distance was compared in dentate subject with either Class I or Class II/2 incisor relations. Maxillary casts were orientated parallel to the occlusal plane on an xy table, connected to a movable vertical arm. The distance from the posterior edge of the papilla to the labial incisor surface was measured. Results showed a mean difference of 2 mm between the groups, significant at the P < or = 0.001 level, however this distance would not appear to invalidate the conventional biometric guideline of 10 mm.