【作者】 徐倩蓉； 谭红；

【Author】 Qianrong Xu Hong Tan(West China school of stomatology,Sichuan University)

【机构】 四川大学华西口腔医学院；

【摘要】 目的:本实验通过临床研究比较并评估Er:YAG激光(KEYⅢ@,KaVo,德国)与氟保护漆治疗颈部牙本质过敏症的有效性。方法:临床上收集颈部牙本质过敏症的患者30列共患牙76颗(无龋以及无其他牙科疾患),随机的将患者分为两个处理组:(1)Er:YAG激光处理组(照射能量60nJ、频率2Hz,照射时间30秒/次,共4次,间歇补水),(2)氟保护漆处理组(NaF 0.5%),并分别用患者自身对侧的过敏牙齿作为空白对照。由另外一个检查者在治疗前、治疗后即可、1周、2月、4月对患者患牙用喷气(喷气时间为5s,喷气离患牙的距离为3mm)、探刮(探刮时间为5s)进行检测,并对患者检测时产生的不适感分为4度进行评估。结果:Er:YAG激光处理组与氟保护漆处理组在治疗后即可、1周后都能有效的降低患者牙本质过敏症状。然而,2个月后氟保护漆组的患者不适感上升达58%,4个月后,氟保护漆处理组的患者不适感达92%。与之相对,Er:YAG激光处理组效果持续,4个月后仅有32%。氟保护漆处理组与Er:YAG激光处理组之间各个时间段的检查有统计学差异(P<0.05);与未治疗组对比,两组均有效的降低敏感症状。结论:Er:YAG激光能有效的降低牙本质过敏症症状,并且,与氟保护漆组对比,Er:YAG激光疗效更持久。更多还原

【Abstract】 Objective:the aim of the present study was to evaluate and compare the desensitizing effects of the Er:YAG laser(KEYⅢ@,KaVo,Germany) and the Fluor protector on cervically exposed hypersensitive dentine.Method:A group of 30 patients showing a total of 76 hypersensitive teeth(caries-free and no other dental disease) was selected and randomly allocated to two groups:(1) Er:YAG laser(60mJ/pulse,2Hz,30s/ time,totally 4 times,intermittent),(2) Fluor protector(NaF 0.5%) while the contralateral teeth served as an untreated control in each patient.The degree of sensitivity was determined qualitatively with an evaporative(5s air blast at a distance of 3 mm from each site to be tested) and a tactile(5s) stimulus.The degree of discomfort was determined according to an arbitrary pain scale in 4 degrees.Assessment was recorded before treatment,immediately after,1 week,2 and 4 months after treatment by another blinded examiner.Results:Both treatment groups resulted in significant improvements of discomfort immediately and 1 week after treatment.2 months later the discomfort in the Fluor protector group increased up to 58%of the baseline score and after 4 months even up to 92%,whereas the effect of the laser lasted,and increased up to 32%after 4 months.There were statistically significant differences between two groups at any time (P<0.05).Compared to the untreated control group,both treatment groups resulted in a reduction of discomfort.Conclusion:It was concluded that the treatment of hypersensitive teeth with EnYAG laser was effective.And contrast to treated with the Fluor protector, the maintenance of the positive effect with EnYAG laser was more prolonged.更多还原