Mir Maziar, Mojahedi Seyed Masoud, Tunér Jan, Shabani Masoud, Darabi Fatemeh, Rohban Alireza
DDS, MSc. Alumnus, RWTH Hospital, Aachen, Germany.
DDS, Ph.D. Department of Laser, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Laser Ther. 2019 Sep 30;28(3):193-198. doi: 10.5978/islsm.28_19-OR-16.
Dentin hypersensitivity is a frequent oral condition among patients suffering from gingival recession. Recent studies have suggested that photobiomodulation has the potential to reduce inflammation and relieve pain. The present study aims to assess the effectiveness of a new design of photobiomodulation toothbrush with specific irradiation parameters as a homecare device in treating dentin hypersensitivity and to compare its therapeutic effect with that of fluoride varnish.
Thirty patients with gingival recession and dentin hypersensitivity were selected and randomly assigned to three groups of equal size: fluoride varnish, photobiomodulation, and the combination. Dentin pain and hypersensitivity were measured using visual analog scale (VAS) by two distinct tests: the contact test with a periodontal probe and the air blast test on the areas of gingival recession and denuded root; once at baseline and again one month after the initial application of treatments. Laser irradiation was carried out at the wavelength of 660 nm in CW with an output power of 40 mW for 30 seconds per spot (1.2 J per spot, 6 J/cm energy density, and 200 mW/cm power density), perpendicularly to denuded root surfaces in non-contact mode.
A significant reduction in dentin pain and hypersensitivity was observed in all three groups. However, the reduction was significantly greater in the combination group.
At-home treatment of dentin hypersensitivity with photobiomodulation toothbrush is a convenient, safe, and effective method for the management of dentin hypersensitivity.
牙本质过敏是牙龈退缩患者中常见的口腔病症。近期研究表明，光生物调节有减轻炎症和缓解疼痛的潜力。本研究旨在评估一种具有特定辐照参数的新型光生物调节牙刷作为家庭护理器械治疗牙本质过敏的有效性，并将其治疗效果与氟化漆的治疗效果进行比较。
选取30例牙龈退缩且患有牙本质过敏的患者，随机分为三组，每组人数相等：氟化漆组、光生物调节组和联合组。通过两种不同测试，使用视觉模拟评分法（VAS）测量牙本质疼痛和过敏情况：用牙周探针进行接触测试以及对牙龈退缩和牙根暴露区域进行气喷测试；在基线时测量一次，在初次治疗后一个月再次测量。激光以连续波模式在660nm波长下进行照射，输出功率为40mW，每点照射30秒（每点1.2J，能量密度6J/cm，功率密度200mW/cm），以非接触模式垂直于牙根暴露表面进行照射。
所有三组的牙本质疼痛和过敏情况均有显著减轻。然而，联合组的减轻程度明显更大。
使用光生物调节牙刷在家中治疗牙本质过敏是一种方便、安全且有效的牙本质过敏管理方法。
