Doneria Divya, Thakur Seema, Singhal Parul, Chauhan Deepak, Jayam Cheranjeevi, Uppal Anika
Department of Pedodontics, H. P. Government Dental College, Shimla, Himachal Pradesh, India.
Contemp Clin Dent. 2017 Jan-Mar;8(1):128-133. doi: 10.4103/ccd.ccd_886_16.
A new epidemiological index is introduced for full assessment of dental caries which is known as caries assessment spectrum and treatment (CAST). "Spectrum" is considered backbone of this index as it covers from no lesion to advanced stage progression of caries. We aimed to evaluate and compare the status of caries in primary and permanent molars of 7-8-year-old schoolchildren of Shimla using CAST index and to find if any correlation exists between the status of caries in evaluated teeth.
Three hundred and one schoolchildren with age group of 7-8 years were selected from schools in Shimla. CAST codes were determined for primary molars and first permanent molars. The distribution of CAST codes in the examined molars is correlated with the help of Spearman's rank correlation coefficient. The level of statistical significance was established at < 0.05. The intraexaminer reliability was determined by the unweighted kappa coefficient.
Caries was assessed in 6.3%-12.3% of the permanent molars in contrast to primary molars, in which caries was near about 50%. The correlation was stronger for first and second deciduous molars for the right side of the mouth than the left side ( = 0.293 and 0.257 in the maxilla and 0.503 and 0.319 in the mandible [ < 0.001], respectively, while correlation for teeth in opposite jaws was moderate [ = 0.20-0.47]). The intraexaminer reliability was examined ( = 0.90 for the primary and 0.85 for permanent molars).
The correlation between primary and permanent molars regarding the caries status in primary molars is weak while strongest correlation was present on the right side of the mouth for first and second deciduous molars. The study also showed the applicability of the CAST index in epidemiological surveys.
引入了一种新的用于全面评估龋齿的流行病学指数，即龋齿评估谱与治疗（CAST）。“谱”被视为该指数的核心，因为它涵盖了从无病变到龋齿晚期进展的各个阶段。我们旨在使用CAST指数评估和比较喜马偕尔邦7 - 8岁学童乳牙和恒牙磨牙的龋齿状况，并确定所评估牙齿的龋齿状况之间是否存在任何相关性。
从喜马偕尔邦的学校中选取了301名年龄在7 - 8岁的学童。确定乳牙和第一恒磨牙的CAST编码。借助Spearman等级相关系数来关联所检查磨牙中CAST编码的分布情况。统计学显著性水平设定为<0.05。通过非加权kappa系数来确定检查者内部的可靠性。
与乳牙相比，恒牙磨牙中有6.3% - 12.3%被评估为有龋齿，而乳牙的龋齿率接近50%。口腔右侧第一和第二乳磨牙之间的相关性比左侧更强（上颌分别为0.293和0.257，下颌分别为0.503和0.319[P<0.001]），而相对颌的牙齿之间的相关性为中等（P = 0.20 - 0.47）。检查了检查者内部的可靠性（乳牙为0.90，恒牙磨牙为0.85）。
乳牙和恒牙磨牙在龋齿状况方面的相关性较弱，而口腔右侧第一和第二乳磨牙之间的相关性最强。该研究还表明了CAST指数在流行病学调查中的适用性。
