The long-term survival of lower second primary molars in subjects with agenesis of the premolars

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The long-term survival of lower second primary molars in subjects with agenesis of the premolars.

This study investigated 41 subjects, 13 male and 28 female, with agenesis of one or both lower second premolars, and with retained lower second primary molars. Intra-oral radiographs of 59 primary teeth were examined to judge the resorption of the mesial and distal roots, and were measured to record infra-occlusion of the primary teeth and tipping of the adjacent permanent teeth. The study comm...

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The purpose of the present study was to investigate persistent primary second molars in a group of young people in their late twenties with agenesis of one or two second premolars. In 1982-83 it was decided, in connection with the orthodontic evaluation of 25 patients, to allow 35 primary molars (one or two in each patient) to remain in situ. All patients had mixed dentitions and agenesis of on...

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ژورنال

عنوان ژورنال: The European Journal of Orthodontics

سال: 2000

ISSN: 0141-5387,1460-2210

DOI: 10.1093/ejo/22.3.245