The application of Kvaal's dental age calculation technique on panoramic dental radiographs
The application of Kvaal's dental age calculation technique on panoramic dental radiographs
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DOI：
10.1016/j.forsciint.2004.08.017
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发表时间：
2005-10-29
影响因子：
2.2
通讯作者：
Willems, G
中科院分区：
文献类型：
--
作者：
Bosmans, N;Ann, P;Willems, G
简介：文献报道了一种仅基于根尖周X线照片的放射学测量来计算牙龄的方法：通过多元回归分析来分析实际年龄与二维牙髓尺寸之间的关系。本研究的目的是评估这种方法是否可行，并且在应用于全景X线照片时是否可以产生具有足够重复性的统计结果。材料和方法：从年龄为该年龄的患者中随机收集197张全景X线照片年龄从19岁到75岁不等。根据报道的技术，在全景X光片上选择了六颗牙齿：上颌中的中切牙、侧切牙和第二二尖牙，下颌中的侧切牙、尖牙和第一二尖牙。遵循与原始论文中相同的排除标准。为了发现实际年龄与计算年龄之间的显着差异，进行了统计分析。结果：当根据所有六颗牙齿或所有三颗下颌牙齿的测量值计算年龄时，实际年龄与计算年龄之间没有发现显着差异。在所有其他情况下，单独使用单个牙齿或使用所有三颗上颌牙齿的统计分析显示出显着差异。结论：在标准长锥根尖X光照片或正畸X线照片上应用原始技术似乎没有显着差异，特别是在对所有六颗选定牙齿进行测量时。 (c) 2004 Elsevier Ireland Ltd. 保留所有权利。
Introduction: Literature reports on a method for dental age calculation which is based only on radiological measurements on periapical dental radiographs: the relationship between chronological age and the two-dimensional dental pulpal size was analysed by means of multiple regression analyses.The purpose of the present study was to evaluate whether this approach could be feasible and could lead to statistically sound results with adequate repeatability when applied on panoramic radiographs.Materials and methods: One hundred and ninety seven panoramic radiographs were collected at random from patients of whom the age ranged from 19 to 75 years. According to the reported technique, six teeth were selected on the panoramic radiograph: in the maxilla the central and lateral incisor and second bicuspid, and in the mandibula the lateral incisor, cuspid and first bicuspid. The same exclusion criteria as in the original paper were respected. Statistical analysis was carried out in order to spot significant differences between the chronological age and the calculated age.Results: When the age was calculated based on measurements of all six teeth or of all three mandibular teeth, no significant differences were found between the real age and the calculated one. In all other instances using the individual teeth separately or using all three maxillary teeth statistical analysis revealed significant differences.Conclusion: There appears to be no significant difference between applying the original technique on standard long-cone periapical radiographs or on orthopantomograms, especially when carrying out measurements on all six selected teeth. (c) 2004 Elsevier Ireland Ltd. All rights reserved.