The application of the Kvaal method to estimate the age of live Korean subjects using digital panoramic radiographs
The application of the Kvaal method to estimate the age of live Korean subjects using digital panoramic radiographs
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DOI：
10.1007/s00414-017-1762-8
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发表时间：
2018-07-01
影响因子：
2.1
通讯作者：
Lee, Sang-Seob
中科院分区：
文献类型：
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作者：
Roh, Byung-yoon;Lee, Won-Joon;Lee, Sang-Seob
由于观察牙齿的组织结构很困难，因此对活体牙齿年龄的估计是有限的。因此，通过观察继发性牙本质沉积引起的牙髓大小的变化，提出了几种估计年龄的方法。本研究的目的是评估的有效性Kvaal方法估计韩国受试者使用数字全景X光片的年龄，并制定回归方程，用于韩国的主题。我们纳入了266名韩国受试者（年龄21-69岁）访问朝鲜大学牙科医院（光州，韩国）。根据Kvaal方法，在数字全景X线片上测量六种牙齿类型（上颌中切牙、侧切牙、第二前磨牙、下颌侧切牙、犬齿和第一前磨牙）的牙髓尺寸和宽度。统计观察者间/观察者内的可靠性进行计算，以评估测量值的再现性，并确定实际年龄和测量值之间的相关性。分析预测年龄与实际年龄的差异。同时应用了Rollowinsky方法并对其有效性进行了评价。此外，一系列新的回归方程的年龄估计的韩国人。当这两种方法直接应用于受试者的牙齿，显着差异之间观察到的估计和实足年龄。原始Kvaal方法计算的受试者牙齿的长度相关参数显示无显著相关性。一个回归方程来自没有长度比的宽度参数，提出了用于韩国科目。
Dental age estimation of the living is limited because observing the histological structure of teeth is difficult. Therefore, several methods have been proposed to estimate age by observing changes on dental radiographs of pulpal size caused by secondary dentin deposition. This study aims to evaluate the validity of the Kvaal method to estimate the ages of Korean subjects using digital panoramic radiographs and formulate regression equations for use in Korean subjects. We included 266 Korean subjects (age 21-69 years) visiting Chosun University Dental Hospital (Gwangju, South Korea). The pulpal size and width of six tooth types (maxillary central incisor, lateral incisor, second premolar, mandibular lateral incisor, canine, and first premolar) were measured on digital panoramic radiographs according to the Kvaal method. Statistical interobserver/intraobserver reliabilities were calculated to evaluate the reproducibility of the measured values, and correlations between actual ages and measured values were identified. The differences between the predicted ages and the actual age were analyzed. Paewinsky method was also applied and its validity was evaluated. In addition, a series of new regression equations for the age estimation of Korean subjects was produced. When both methods were applied directly to the teeth of the subjects, significant differences were observed between the estimated and chronological ages. The length-related parameters of the teeth of subjects calculated by the original Kvaal method showed no significant correlation. A regression equation derived from the width parameters without the length ratios is proposed for use in Korean subjects.