|
KMID : 0361920090390020120
|
|
Korean Journal of Orthodontics
2009 Volume.39 No. 2 p.120 ~ p.128
|
|
|
Skeletal maturation evaluation using mandibular third molar development in adolescents
|
|
Cho Sun-Mi
Hwang Chung-Ju
|
|
|
Abstract
|
|
|
Objective: To estimate dental maturity using the Demirjian Index for the mandibular third molar and investigate the relationships between dental maturity and skeletal maturity among growing children.
Methods: The samples were derived from panoramic, lateral cephalometric and hand-wrist radiographs of 270 female subjects registered as patients at the orthodontic department, dental hospital, Yonsei University. Dental maturity [Demirjian Index (DI)] and skeletal maturity [skeletal maturation indicators (SMIs)] and cervical vertebrae maturation indicators (CVMIs)] were estimated from these radiographs.
Results: There was a significant correlation (r = 0.64) between SMIs and DI, and a similar correlation (r = 0.59) was observed between CVMIs and DI (p ＜ 0.001). If DI was above Stage E, then the SMI was above Stage 10 and the CVMI was above Stage 5. There was a weak correlation (r = 0.26) between age at menarche and DI (p ＜ 0.001). There was no significant difference in DI among Class I, II or III malocclusions.
Conclusions: Dental maturity evaluation using the mandibular third molar will be an adjunctive tool in combination with cervical vertebrae and hand-wrist maturity evaluations.
|
|
|
KEYWORD
|
|
|
Growth evaluation, Maturation, Growth prediction, Growth and development
|
|
|
FullTexts / Linksout information
|
|
 
|
|
|
Listed journal information
|
|
  
|