J Korean Acad Pediatr Dent.  2020 Aug;47(3):312-319. 10.5933/JKAPD.2020.47.3.312.

Evaluation of Characteristics of the Dental Maturity in Girls with Precocious Puberty

  • 1Department of Pediatric Dentistry, College of Dentistry, Yonsei University, Seoul, Korea


Precocious puberty (PP) is defined as the early development of secondary sexual characteristics (before the ages of 8 years in girls and 9 years in boys). The aim of this study is to identify characteristics of the dental maturity in girls with PP that discriminate them from normal healthy girls. This study included 99 girls aged 6 - 8 years with PP and 99 girls without past medical history of same chronological age (control group). The study was performed on 198 panoramic radiographs (99 PP girls, 99 control group girls). Demirjian method was used to evaluate the panoramic radiographs and determine dental maturity. Difference in dental maturity score and tooth formation stages between the two groups were analyzed. The PP group showed significant higher maturity score than control group. Among mandibular teeth, mandibular 2nd premolar and 2nd molar were significantly more mature in the PP group than control group. Logistic regression analysis showed that mandibular 2nd molar was only significant predictor for PP girls.


Precocious puberty; Dental maturation; Dental developments; Demirjian method
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