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[Cervical vertebral bone age during puberty].

Li Su1, Ying Lü, Hong-mei Wang

  • 1Department of Orthodontics, Faculty of Stomatology, Capital University of Medical Sciences, Beijing 100050, China.

Zhonghua Kou Qiang Yi Xue Za Zhi = Zhonghua Kouqiang Yixue Zazhi = Chinese Journal of Stomatology
|March 14, 2007
PubMed
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A new method objectively evaluates cervical vertebral bone age in Chinese growing subjects. This approach uses cephalometric and hand-wrist radiographs for accurate assessment of pubertal growth stages.

Area of Science:

  • Orthodontics and Dental Anthropology
  • Pediatric Endocrinology
  • Radiology

Background:

  • Accurate assessment of skeletal maturity is crucial for orthodontic treatment planning and predicting growth potential in children and adolescents.
  • Traditional methods for bone age determination often rely on hand-wrist radiographs, which can be time-consuming and may not fully capture pubertal development.
  • Cervical vertebral maturation (CVM) offers a potential alternative for assessing skeletal age, particularly during the pubertal growth spurt.

Purpose of the Study:

  • To develop and validate an objective and accurate method for determining cervical vertebral bone age (CVBA) specifically for Chinese growing populations.
  • To establish a predictive formula for CVBA based on easily measurable parameters from cephalometric and hand-wrist radiographs.
  • To assess the reliability of the proposed CVBA method in evaluating pubertal growth stages.

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Main Methods:

  • Cephalometric and hand-wrist radiographs were obtained from 180 Chinese subjects (90 boys, 90 girls) during their pubertal period.
  • Measurements of the third and fourth cervical vertebral bodies were performed.
  • A stepwise multiple regression analysis was employed to derive a formula for CVBA, correlating cervical vertebral measurements with hand bone age (determined by Liaokawa's method).

Main Results:

  • A statistically significant formula for calculating cervical vertebral bone age (Y) was established: Y = -20.189 + 24.666(AH(4)/AP) + 46.468(AH(3)/AP(3)) + 39.854(AH(4)/H).
  • The regression equation demonstrated a high degree of accuracy, with an R-squared value of 0.81, indicating that 81% of the variance in cervical vertebral bone age could be explained by the selected variables.
  • All predictor variables (AH(4)/AP, AH(3)/AP(3), AH(4)/H) were statistically significant (P < 0.01) in the regression model.

Conclusions:

  • The developed method provides an objective and reliable tool for assessing cervical vertebral bone age in Chinese growing individuals.
  • This method can be effectively utilized to evaluate the pubertal growth stages of Chinese children and adolescents.
  • The established formula offers a practical approach for clinicians to estimate skeletal maturity using readily available radiographic data.