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Angle Orthod. 2012 May;82(3):501-6. doi: 10.2319/051611-334.1. Epub 2011 Sep 7.

Skeletal maturation evaluation using mandibular second molar calcification stages.

Author information

1
Department of Orthodontics, PDM Dental College and Research Institute, Sarai Aurangabad, Bahadurgarh, Haryana, India. docshilu@yahoo.com

Abstract

OBJECTIVE:

To investigate (1) the relationships between the stages of mandibular second molar calcification and skeletal maturity; and (2) whether second molar calcification stages can be used as a reliable diagnostic tool to determine skeletal maturity.

MATERIALS AND METHODS:

Samples were derived from panoramic radiographs and lateral cephalograms of 300 subjects (137 males and 163 females) with ages ranging from 9 to 18 years, and estimates of dental maturity (Demirjian Index [DI]) and skeletal maturity (cervical vertebrae maturation indicators [CVMI]) were made.

RESULTS:

A highly significant association (C*  =  0.854 for males and 0.866 for females) was found between DI and CVMI. DI stage E corresponded to stage 2 of CVMI (pre-peak of pubertal growth spurt) and DI stages F and G corresponded to stages 3 and 4 of CVMI (peak of pubertal growth spurt). DI stage H was associated with stages 5 and 6 of CVMI (end of pubertal growth spurt).

CONCLUSION:

A highly significant association exists between DI and CVMI. Mandibular second molar DI stages are reliable indicators of skeletal maturity.

PMID:
21899377
DOI:
10.2319/051611-334.1
[Indexed for MEDLINE]

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