Pape H R, Mäkinen K K
University of Michigan, School of Dentistry, Ann Arbor 48109-1078, USA.
Oper Dent. 1994 Nov-Dec;19(6):221-3.
An ongoing study of the relationship between different chewing gums, remineralization, and caries rates was started in 1989 in Belize, Central America. Initially 1277 children, age 10 years, were assigned in equal randomized groups to four dentists who had been trained to identify a standard of caries diagnosis. The same children were examined according to a modified WHO caries code by the same dentist in each of the three subsequent years. To eliminate one possible variable, all 200 dental explorers used were examined under a X20 binocular Bausch and Lomb dissecting microscope initially and at each exam period. Any explorer not comparable to an explorer that was originally marked and kept unused as a standard was sharpened by hand on an Arkansas oilstone wetted with engine oil for lubrication. Explorers that could not be restored to a condition comparable at X20 to the standard were discarded. Approximately 10% of the explorers needed correction at each exam period and about 1% were discarded. In any study related to dental caries evaluation with dental explorers or comparison of explorer use versus nonuse, verification and maintenance of sharpness of used and even new dental explorers should be addressed to remove that factor as a possible variable.
1989年，在中美洲的伯利兹开始了一项关于不同口香糖、再矿化和龋齿率之间关系的持续研究。最初，1277名10岁儿童被平均随机分配到四名经过龋齿诊断标准识别培训的牙医处。在随后的三年里，同一名牙医按照修改后的世界卫生组织龋齿编码对这些儿童进行检查。为了消除一个可能的变量，所有使用的200支牙科探针最初以及在每个检查阶段都在一台X20双筒博士伦解剖显微镜下进行检查。任何与最初标记并留作标准未使用的探针不可比的探针，都用浸有发动机油用于润滑的阿肯色油石手工磨锐。无法恢复到在X20下与标准可比状态的探针被丢弃。在每个检查阶段，大约10%的探针需要校正，约1%被丢弃。在任何与使用牙科探针进行龋齿评估或比较使用探针与不使用探针相关的研究中，都应解决已使用甚至新的牙科探针的锐度验证和维护问题，以消除该因素作为一个可能的变量。
