Infraocclusion, reinclusion, infraposition: all these terms define the same anomaly which remains poorly explained. It is characterized by an anomaly in the position of the tooth, which having been in occlusion, finds itself below the occlusal plane. The degree of infraocclusion is variable, going from a few hundredths of a millimeter to the complete disappearance of the tooth under the gingival mucous membrane. Deciduous molars are the most affected teeth and quite particularly when the permanent tooth is missing due to agenesis. A preliminary study was conducted to specify these infrapositions as well as the facial topology of patients suffering from multiple dental agenesis. The results show that the mandibular second molars are the most affected teeth. The number of infrapositioned teeth increases with the number of agenesis and seems to be more frequent in hypodivergent patients.
Authors : M. MEDIO, B. Vi-FANE, M.J. BOILEAU, M. DE LA DURE-MOLLA