Objective To evaluate the effectiveness of low-level laser therapy(LLLT)in the treatment of pain during mechanical cavity preparation of Class Ⅰ cavities in adult permanent teeth in adult patients with low pain tolerance.Methods This study selected adult patients with Class Ⅰ permanent tooth cavities(D2)who visited the Department of Stomatology at the First Affiliated Hospital of Bengbu Medical University from October 2022 to September 2023.Before the treatment,the preliminary test of pain threshold(PTPT)was initially tested by the mechanical removal method,and the pain score was evaluated by the visual analogue scale(VAS)score.Twenty patients with 7 points≤VAS＜10 points,40 teeth were selected,laser group(20 teeth)and placebo group(20 teeth).The laser group was treated with LLLT be-fore the cavity preparation,and the placebo group was treated with simulated laser irradiation at the same position but the laser was not in working mode.The VAS score was used to evaluate the pain intensity after the cavity preparation,and the VAS scores were compared between the two groups and before and after the treatment.Results The VAS score of all subjects in the laser group was lower than that in the placebo group[4.0(4.0,4.5)points vs.6.0(6.0,6.8)points,P＜0.001];Compared with the pain felt during PTPT,the laser group decreased by 42.9％[7.0(7.0,8.0)points vs.4.0(4.0,4.5)points,P＜0.001]and the placebo group decreased by 14.3％[7.0(7.0,8.0)points vs.6.0(6.0,6.8)points,P＜0.001].Conclusion The use of LLLT before cavity mechanical preparation can greatly re-duce the pain intensity during permanent tooth treatment.
关键词
半导体激光/低水平激光治疗/恒牙龋洞机械预备/疼痛/有效性
Key words
Semiconductor laser/Low-level laser therapy/Mechanical preparation of permanent tooth caries/Pain/Ef-fectiveness
维普
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