Wang Y, Huang S, Liu H
Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China.
Community Dent Health. 2011 Jun;28(2):160-4.
To investigate the accuracy and precision of Haavikko's method in estimating dental age (DA) in healthy Chinese children, and evaluate the agreement between DA and dental age in the left mandibular quadrant (DALM), in order to simplify Haavikko's method by using only the developing teeth in the left half of the mandible.
Six hundred and thirteen panoramic photographs of healthy Chinese children were reviewed retrospectively. DA and DALM were calculated using Haavikko's method, but DALM included only the developing teeth in the left mandible. A paired t-test was used to compare the difference between chronological age (CA) and DA, DA and DALM. Correlation coefficients were calculated. Intra-examiner and inter-examiner variation were also evaluated using Cohen's Kappa value.
Intra-examiner and inter-examiner Kappa values were 0.90 and 0.84 respectively, indicating a high reliability of Haavikko's method in this study group. The mean difference between DA and CA of the samples was 0.14 years. The correlation coefficient between the two was 0.93. For DA and DALM, the mean difference was 0.05 years, and the correlation coefficient was 0.99.
Haavikko's method has a high degree of accuracy and precision when applied in this Chinese population. DALM may be used instead of DA to estimate dental ages.
研究哈维科方法在评估健康中国儿童牙龄（DA）时的准确性和精确性，并评估牙龄与左下颌象限牙龄（DALM）之间的一致性，以便通过仅使用下颌左侧的发育中牙齿来简化哈维科方法。
回顾性分析613例健康中国儿童的全景照片。使用哈维科方法计算牙龄和左下颌象限牙龄，但左下颌象限牙龄仅包括下颌左侧的发育中牙齿。采用配对t检验比较实际年龄（CA）与牙龄、牙龄与左下颌象限牙龄之间的差异。计算相关系数。还使用科恩kappa值评估检查者内和检查者间的差异。
检查者内和检查者间的kappa值分别为0.90和0.84，表明在该研究组中哈维科方法具有较高的可靠性。样本的牙龄与实际年龄的平均差异为0.14岁。两者之间的相关系数为0.93。对于牙龄和左下颌象限牙龄，平均差异为0.05岁，相关系数为0.99。
哈维科方法应用于该中国人群时具有高度的准确性和精确性。可以使用左下颌象限牙龄代替牙龄来估计牙齿年龄。
