Tickotsky Nili, Petel Roy, Araki Rabi, Moskovitz Moti
J Clin Pediatr Dent. 2017;41(5):358-361. doi: 10.17796/1053-4628-41.5.358.
The rate of caries progression in primary teeth has rarely been studied, with most studies on early childhood caries reporting the percentage of lesions that remain at a certain stage of disease over a period of time. The aim of the present study was to examine the prevalence and behavior of proximal and occlusal carious lesions in primary teeth among children from low socio-economic status.
This retrospective study was based on bite-wing radiographs of 95 children aged 5-12 taken at 6-12 months intervals, with a follow-up period of at least three years. One hundred thirty-five teeth and 141 tooth surfaces were examined. The degree of proximal surfaces and occlusal caries advancement was scored and statistical analyses (Mann-Whitney, Kruskal-Wallis and Kaplan-Meier analysis) were performed to evaluate caries progression rate.
The results revealed that approximately 0.8 years were required for a carious lesion to progress from the outer enamel to the dentino-enamel junction, and an additional 1.4 years for it to reach the inner part of the dentin.
The caries progression rate found in the present study is more rapid than previously found and affects more the lower socio economic population.
乳牙龋病进展速率鲜有研究，大多数关于幼儿龋病的研究报告的是在一段时间内处于疾病某一阶段的病变百分比。本研究的目的是调查社会经济地位较低儿童乳牙邻面和咬合面龋病病变的患病率及发展情况。
本回顾性研究基于95名5至12岁儿童的咬合翼片，拍摄间隔为6至12个月，随访期至少三年。共检查了135颗牙齿和141个牙面。对邻面和咬合面龋病进展程度进行评分，并进行统计分析（曼-惠特尼检验、克鲁斯卡尔-沃利斯检验和卡普兰-迈耶分析）以评估龋病进展速率。
结果显示，龋病病变从牙釉质外层发展到牙本质-牙釉质界大约需要0.8年，再发展到牙本质内部还需要1.4年。
本研究发现的龋病进展速率比之前发现的更快，且对社会经济地位较低人群的影响更大。
