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Correlation between Chronological Age, Dental Age and Skeletal Age among Monozygoyic and Dizygotic Twins.
MedLine Citation:
PMID:  24155573     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
INTRODUCTION: Chronological age, dental development, height and weight measurements, sexual maturation characteristics and skeletal age are some biological indicators that have been used to identify time of growth. Many researchers have agreed that skeletal maturity is closely related to the craniofacial growth, and bones of hand and wrist are reliable parameters in assessing it. The complete hand and wrist radiograph involves 30 bones and assessment of these bones is one elaborate task. The present study is therefore, undertaken to assess the correlation between the chronological age, dental age and skeletal ages among different types of twins.
MATERIALS AND METHODS: The study consisted of 60 subjects (30 twins) aged 8 to 16 years, divided into group of 10 monozygotic, 10 dizygotic and 10 mixed sex twins. The sample was selected from Twin Survey- 2008 conducted by Department of Orthodontics and Dentofacial Orthopaedics, Sree Balaji Dental College and Hospital, Chennai. Their zygosity was determined by sex, blood groups and by the parent. The chronological age was measured by the date of birth given by the parents. Panoramic and hand wrist x-rays were taken. Dental age was assessed by Demerjian et al method and skeletal age by Greulich and Pyle method. The correlation among twins in dental and skeletal ages with the chronological age was assessed using Correlation Coefficient and Student's't' Test.
RESULTS: The obtained data was fed into the computer and statistical analysis was done for the same using the SPSS version 10.0. Statistical significance was tested at P<0.05 level. Mean and Standard Deviation, Correlation Coefficient, Student's't' Test statistical methods were employed. The result showed highly significant 'p' value as <0.001 in all the correlations except for mixed pairs. Descriptive statistics in most of the areas demonstrated a non-significant result between zygosity groups.
CONCLUSION: There is a correlation existing between the individual's chronological age, dental age and skeletal age and correlation also exists in the twin pairs of the same zygosity and among each pair but no correlation exists between different zygotic twins. How to cite this article: Gupta M, Divyashree R, Abhilash P R, Bijle M N A, Murali K V. Correlation between Chronological Age, Dental Age and Skeletal Age among Monozygoyic and Dizygotic Twins. J Int Oral Health 2013; 3(1):16-22.
Authors:
Mohit Gupta; R Divyashree; Pr Abhilash; Mohammed Nadeem A Bijle; Kv Murali
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Publication Detail:
Type:  Journal Article     Date:  2013-02-26
Journal Detail:
Title:  Journal of international oral health : JIOH     Volume:  5     ISSN:  0976-7428     ISO Abbreviation:  J Int Oral Health     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-10-24     Completed Date:  2013-10-24     Revised Date:  2014-07-31    
Medline Journal Info:
Nlm Unique ID:  101562691     Medline TA:  J Int Oral Health     Country:  India    
Other Details:
Languages:  eng     Pagination:  16-22     Citation Subset:  -    
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