论文部分内容阅读
处理后的104个釉质样本随机抽取8个为C组(空白对照组),剩余部分随机分为A(照射10s)和B(照射20s)两大实验组,其中每一大组再随机分为6个小组,分别用Er:YAG激光以1～6W不同能量进行照射。照射后体视显微镜测量A、B两组凹坑的直径和深度,能量色散型X射线荧光光谱(EDX)测定3组的Ca、P含量和其比值的变化。结果:1～6W不同能量照射20s(B组)的凹坑直径和深度均明显大于照射10s(A组)各能量组,差异均有统计学意义(P<0.05);A、B两组实验组的Ca、P含量均明显高于空白对照组,差异有统计学意义(P<0.05);空白组和两实验组的Ca/P比值差均无统计学差异(P>0.05)。结论:在Er:YAG激光一定能量的照射下,釉质的结构和成分均会产生一定的变化。
A total of 104 enamel samples were randomly divided into group C (blank control group), and the rest were randomly divided into two experimental groups, A (irradiation 10s) and B (irradiation 20s), and each group was randomly divided into Six groups, respectively, with Er: YAG laser to 1 ~ 6W different energy irradiation. The diameters and depths of dimples in groups A and B were measured by stereomicroscope. The contents of Ca and P in the three groups were measured by energy dispersive X-ray fluorescence spectrometry (EDX). Results: The dimple diameter and depth of 20s (group B) irradiated with different energy for 1 ~ 6W were significantly greater than those of 10s (group A), the differences were statistically significant (P <0.05) (P <0.05). There was no significant difference in Ca / P ratio between the blank group and the two experimental groups (P> 0.05). Conclusion: The structure and composition of enamel will be changed under certain energy of Er: YAG laser.