First report of bilateral supernumerary teeth associated with both primary and permanent maxillary canines.
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A very rare case of bilateral supernumerary teeth in the maxillary canine region and its management through a 3-step-conservative approach and 5-year-follow up is presented in this report. A 7-year-old Caucasian boy presented with 2 erupted supernumerary primary maxillary canines (53s and 63s) and two unerupted supernumerary permanent maxillary canines (13s and 23s). The treatment was carried out in three steps. In the first step, we removed teeth 53s and 63s. As the second step, early removal of teeth 53 and 63 and cementation of a space maintenance appliance (Nance's arch) were performed. In the third step, teeth 13s and 23s were removed, and the Nance's arch was maintained until the complete eruption of teeth 13 and 23. The management of this case with a proper treatment plan enabled us to solve the problem without complex procedures. (+info)
Autotransplantation of an unerupted wisdom tooth germ without its follicle immediately after removal of an impacted mandibular second molar: a case report.
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An impacted left mandibular second molar (tooth 37) was extracted, but most of its dental follicle remained in the socket. The crown and dental papilla of an unerupted, left mandibular third molar (tooth 38) were then placed into the socket of tooth 37. Successful interaction between the dental follicle of tooth 37 and the crown and dental papilla of tooth 38 led to the formation of a new tooth 37 at the recipient site. This suggests that the dental follicle may function non-specifically with the crown and dental papilla of other tooth germs. (+info)
Unerupted incisors--characteristic features and associated anomalies.
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Study of delayed development of the upper first molars.
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The present study was undertaken to analyze the status of formation of the upper first molar in individuals suspected as having delayed eruption of the upper first molar. The subjects of this study were 51 patients presenting to orthodontic specialists with delayed eruption of the upper first molars. The 95 teeth of these 51 patients were observed. The investigation of the tooth development status included evaluation of the tooth development stage on panoramic radiographs according to the method of Moorrees et al. The upper first molars that showed delayed development were at the stage of initial cleft formation, reflecting a delay by 2.09 years in boys and 2.84 years in girls. In most cases, the delayed eruption was bilateral, and the development stage of the subject teeth did not differ between right and left sides. The plot of the developmental stage of the subject teeth (Y-axis) against the calendar age of the subjects (X-axis) showing delayed upper first molar development was fitted to the logistic curve. The tooth development was at the stage of initial cleft formation was delayed 2.5 years or more, according to these curves. (+info)