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Dental maturity in Belgian children using Demirjian's method and polynomial functions: new standard curves for forensic and clinical use.

Nils Chaillet · Gert Willems · Arto Demirjian

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Forensic Anthropology and Bioarchaeology Studies Orthodontics and Dentofacial Orthopedics Dental Radiography and Imaging

Abstract

Dental maturity was studied from dental panoramic radiographs of 2523 Belgian children (1255 girls and 1268 boys) aged 2 to 18 years. The aim was to compare the efficiency of two methods of age prediction: Demirjian's method, using differently weighted scores, and polynomial functions. The two methods present some differences: Demirjian is used to determine the maturity score as a function of age and polynomial functions are used to determine age as a function of the maturity score. We present, for each method, gender-specific dental maturity tables and curves for Belgian children. Girls always present advanced dental maturity compared with boys. The polynomial functions are highly reliable (0.21% of incorrect classifications) and the percentile method, using Belgian weighted scores, is very accurate (+/- 2.08 years on average, between 2 and 16 years of age).

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References

1959RADIOGRAPHIC ATLAS OF SKELETAL DEVELOPMENT OF THE HAND AND WRIST 1973A new system of dental age assessment.1976New systems for dental maturity based on seven and four teeth 2001Dental Age Estimation in Belgian Children: Demirjian's Technique Revisited 1998Dental age assessment: The applicability of Demirjian's method in South Indian children 1985Dental maturity as an indicator of chronological age: the accuracy and precision of three methods 1980Sexual Differences in Dental Development and Prediction of Emergence 1998Bone age determination based on the study of the medial extremity of the clavicle

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