This work describes the variations in craniofacial morphology in individuals with congenially missing permanent teeth with relation to facial prognathism, jaw development and inclination of the incisor teeth. Both sexes displayed significantly less upper jaw prognathism in individuals with hypodontia compared to the controls, and a less maxillary length as well. This finding was independent of whether the congenitally missing teeth were situated in the upper or the lower jaw. The upper incisors displayed greater anterior inclination in the individuals with hypodontia of both sexes.
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Wisth et al. (1974) studied this question.