Yaghini Jaber, Mogharehabed Ahmad, Safavi Nassimeh, Mohamadi Mehrnush, Ashtiju Fahime
Dental Materials Research Center, Department of Periodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Dental Implannts Research Center, Department of Periodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
J Lasers Med Sci. 2015 Spring;6(2):85-91.
Dentin hypersensitivity is one of the most common complications that affect patients after periodontal therapy. Recently low level laser therapy has been introduced as a new treatment modality and has produced beneficial results. The purpose of this study is to evaluate the effect of low level laser therapy toothbrushes in reduction of dentin hypersensitivity.
In this pilot interventional controlled clinical trial, 40 patients suffering from dentin hypersensitivity were selected using simple randomization. Half of the patients were given laser toothbrushes and the other half was given non-laser sensodyne toothbrushes. Primary dentin hypersensitivity was recorded by visual analogue scale (VAS) score and ice spray. Then dentin hypersensitivity was measured right after the treatment as well az in the intervals of 1 month and 2 months after initiation of the study. Data were compared using Statistical Package for the Social Sciences (SPSS) software and Analysis of variance (ANOVA) paired T test.
The results of this study showed that there was a significant difference in each of the two kinds of tooth brushes separately for all time intervals (P < 0.001). Also the effect of the type of toothbrush was investigated using before treatment VAS with covariance analyses. P values for immediately, 1 month and 2 months after treatment were calculated to be 0.078, 0.02, 0.01 respectfully. Also the effect of the toothbrush type was significant in the manner that laser toothbrushes reduce dentin hypersensitivity more than ordinary toothbrushes (P< 0.05).
Both sensodyne and laser tooth brushes improve dentin hypersensitivity, although the laser toothbrush led to better results in short.
牙本质敏感是牙周治疗后影响患者的最常见并发症之一。近来，低强度激光治疗作为一种新的治疗方式被引入，并取得了有益的效果。本研究的目的是评估低强度激光治疗牙刷在降低牙本质敏感方面的效果。
在这项初步的干预性对照临床试验中，通过简单随机抽样选取了40名患有牙本质敏感的患者。一半患者使用激光牙刷，另一半患者使用不含激光的舒适达牙刷。通过视觉模拟量表（VAS）评分和冰喷雾记录初始牙本质敏感情况。然后在治疗后即刻以及研究开始后的1个月和2个月时间点测量牙本质敏感情况。使用社会科学统计软件包（SPSS）软件和方差分析（ANOVA）配对t检验对数据进行比较。
本研究结果表明，在所有时间间隔内，两种牙刷各自的效果均存在显著差异（P < 0.001）。此外，使用治疗前VAS并通过协方差分析研究了牙刷类型的影响。治疗后即刻、1个月和2个月时的P值分别计算为0.078、0.02、0.01。而且牙刷类型的影响具有显著性，即激光牙刷比普通牙刷更能降低牙本质敏感（P < 0.05）。
舒适达牙刷和激光牙刷均可改善牙本质敏感，尽管激光牙刷在短期内效果更佳。
