Objective To investigate the effect of Nd∶YAG laser and Er∶YAG laser on dentin hypersensi-tivity(DH).Methods A total of 259 teeth from 93 patients with dentin sensitivity were admitted to First People's Hospital of Fochan from March 2021 to December 2022.The patients all experienced soreness and pain after being stimulated by cold,sour,sweet,and brushing their teeth,and were diagnosed as DH.The patients were randomly divided into three groups and treated with three methods:conventional desensitization treatment group(86 affected teeth in 31 patients),Nd∶YAG laser treatment group(90 affected teeth in 31 patients)and Er∶YAG laser treatment group(83 affected teeth in 31 patients),among which the laser group tried to change the laser irradiation param-eters and time to seek the best treatment parameters.The immediate effect,one-week effect,one-month effect,and three-month effect of the three desensitization methods were compared.Results Before treatment,there were no significant differences in VAS scores of the three groups in response to cold air and mechanical stimulation(P＞0.05).The response of Nd∶YAG laser group and Er∶YAG laser group to cold air stimulation was significantly lighter than that of control group at all time periods after treatment(P＜0.05).The response of Nd∶YAG laser group and Er∶YAG laser group to mechanical stimulation was significantly less severe than that of control group at all time periods after treatment(P＜0.05).After treatment,all three groups obtained certain curative effect,Nd∶YAG laser group and Er∶YAG laser group were better than the conventional group,but the difference was not statisti-cally significant(P＞0.05).Conclusion Nd∶YAG laser and Er∶YAG laser can significantly reduce cold air and mechanical stimulation response in the treatment of DH compared with conventional desensitization methods,and improve the therapeutic effect to a certain extent.
Dentin sensitivityNd∶YAG laserEr∶YAG laserEfficacy of Bifluorid 12 Dose Desensiti-zation
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