两种探针探诊牛牙人工早期龋对釉质的影响

摘要

目的:比较5 号尖探针和CPI探针探诊牛牙人工早期龋对釉质的影响.方法:采用体外酸蚀法构建牛牙人工早期龋的离体模型;通过定性、定量研究比较2 种探针探诊牛牙人工早期龋对釉质的影响.结果:扫描电镜发现,5 号尖探针探诊牛牙人工早期龋形成的探孔窄而深,CPI探针探诊牛牙人工早期龋形成的探孔宽而浅. CPI探针探诊对釉质产生的应变能大于5 号尖探针产生的应变能,两者之间的差异有统计学意义(Z＝-2.021,P=0.043),但由于二者的应变能值是在同一等级范围内,所以2 种探针对牛牙人工早期龋釉质的影响差异无实际意义.结论:5 号尖探针探诊牛牙人工早期龋对釉质的破坏并没有明显大于CPI探针.建议龋齿的流行病学调查和临床检查仍可以使用5 号尖探针,应避免采用较重的力去探诊,减少对釉质结构的潜在影响.%Objective: To compare the influence of two explorers on the enamel of artificial initial caries. Methods: Built an artificial initial caries model in vitro. Compared the influence of two explorers on the enamel of artificial initial caries. Results: 1.The holes probed by sharp explorer were deep and narrow. The holes probed by CPI explorer were shallow and wide. 2. The average strain energy produced by CPI explorer was larger than sharp explorer(Z=-2.021,P=0.043), But there was no significant difference because the strain energy produced by two explorers were in the same rate range. Conclusion: The damage on the enamel of artificial initial caries caused by sharp explorer is not larger than that caused by CPI explorer. So we suggest that the sharp explorer can still be used in sampling survey and clinical examination. But a gentle probing action is strongly recommended.