Valizadeh Solmaz, Eil Nakissa, Ehsani Sara, Bakhshandeh Hooman
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Iran J Radiol. 2012 Dec;10(1):1-7. doi: 10.5812/iranjradiol.9993. Epub 2012 Dec 27.
Considerable variations in the development stage among patients of the same chronological age have led to introduce the concept of the developmental age based on the maturation of different organs such as cervical vertebrae or teeth.
The purpose of this study was to investigate the correlation between the stages of tooth calcification and the cervical vertebral maturation in Iranian females.
Four hundred females (age range, 8 to 14 years) participated in the study. To determine the dental maturational stage, calcification of the mandibular teeth except for third molars were rated according to the method suggested by Demirjian et al. To evaluate the stage of skeletal maturation, cervical vertebral morphologic changes were assessed on lateral cephalometric radiographs according to the method explained by Baccetti et al. Correlations between bone maturation and teeth calcification were showed by Spearman's correlation and Kendall's tau-b coefficients. The relevant associations were investigated by ordinal logistic regression models.
Correlations between the two stages were observed in the first and second premolars, canine and central incisors. All these correlations were significant. The association between cervical vertebral maturation and tooth calcification was greatest in the lateral incisor (odds ratio (OR) = 11, 95% confidence interval (CI): 6.6-18.3). However, considering the 95% CI for OR, no significant difference was detected among the second molar, first molar and lateral incisor.
The relationship between calcification of teeth and maturation of cervical bones was significant. Bone maturation can be predicted by using teeth calcification stages, especially in the second molar, first molar and lateral incisor.
相同实足年龄的患者在发育阶段存在显著差异，这促使人们引入了基于不同器官（如颈椎或牙齿）成熟度的发育年龄概念。
本研究旨在调查伊朗女性牙齿钙化阶段与颈椎成熟度之间的相关性。
400名女性（年龄范围8至14岁）参与了本研究。为确定牙齿成熟阶段，除第三磨牙外，下颌牙齿的钙化情况根据德米尔坚等人建议的方法进行评分。为评估骨骼成熟阶段，根据巴切蒂等人解释的方法，在头颅侧位X线片上评估颈椎形态变化。骨骼成熟与牙齿钙化之间的相关性通过斯皮尔曼相关性和肯德尔tau-b系数表示。通过有序逻辑回归模型研究相关关联。
在第一和第二前磨牙、尖牙和中切牙中观察到两个阶段之间的相关性。所有这些相关性均具有显著性。颈椎成熟度与牙齿钙化之间的关联在侧切牙中最大（优势比（OR）=11，95%置信区间（CI）：6.6-18.3）。然而，考虑到OR的95%CI，在第二磨牙、第一磨牙和侧切牙之间未检测到显著差异。
牙齿钙化与颈椎骨成熟之间的关系显著。可以通过牙齿钙化阶段预测骨骼成熟度，尤其是在第二磨牙、第一磨牙和侧切牙中。
