One hundred and one children with precocious puberty were given an oral examination. Dental root development was assessed using panoramic radiographs. All mandibular canines, pre-molars, and molars which could be visualized without apparent distortion were included. The patients were grouped for analysis according to the etiology of their precocity, e.g., McCune-Albright syndrome, familial male, congenital adrenal hyperplasia, central nervous system lesions, and idiopathic precocious puberty. Dental development was significantly retarded relative to their chronological age in patients with idiopathic precocious puberty. However, no significant abnormal dental development was detected in any of the other groups. Individual oral-facial growth and development remain the primary considerations for timing orthodontic treatment.
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