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Er:YAG激光切割牙体硬组织后表面形态改变已有报道,但对牙髓的影响研究很少。本研究用降钙素基因相关肽免疫活性(CGRP-IR)纤维作为主要观察指标,比较Er:YAG激光和高速牙钻备洞后该指标变化,来揭示这两种方法对牙髓损伤与修复的影响。 采用66只雄鼠按制备后1d、4d、7d、14d、21d、35d分6组,每组11只,其中9只用Er:YAG激光和高速牙钻备洞,另2只未处理作对照。激光组所用剂量为100mJ、10pps,牙钻组用#1204、300000r/
Er: YAG laser cutting of dental hard tissue surface morphology has been reported, but little research on the dental pulp. In this study, CGRP-IR fibers were used as the main observation indexes. The changes of indexes after Er: YAG laser and high-speed dental drilling were compared to reveal the effect of these two methods on dental pulp injury and repair Impact. Sixty-six male rats were divided into 6 groups at 1d, 4d, 7d, 14d, 21d and 35d after the preparation. Eleven rabbits in each group were used, of which 9 were treated with Er: YAG laser and high-speed dental drill, and the other 2 were untreated. Laser group dose of 100mJ, 10pps, dental drill group # 1204,300000r /