The genetics has been shown as one of the most important factor influencing the growth and development of the dentofacial complex. Dental development, one of the most reliable indicators of chronological age (CA), has been believed to be fundamentally influenced by genetics rather than environmental factors. As twins share genetic variation (100% for monozygotic and 50% for dizygotic twins) and were subjected to the similar environmental factors, the twin studies have been presented useful and effective method to researchers for investigating the influence of heredity on dental development and observing the similarities and differences among twin pairs. Evaluation of dental development is among the most commonly used and reliable method for dental age determination using the morphological parameters of teeth on dental radiographs. Dental maturity, defined as a dental age (DA), is very important in forensic anthropology to identify cases and in dentistry for planning pedodontic and orthodontic treatment, and also determining a child's growth and developmental status. There are many dental age estimation methods which are mostly based on the morphological evaluation of dental growth observed from dental radiographs in children In order to estimate dental age, Demirjian's, Willems' and Nolla's methods were used. All panoramic radiographs were scored by one observer to eliminate the inter-observer error.
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Demirjian method
Timeframe: up to 3 years