Uzeda M-J, Silva A-M, Costa L-N, Brito F-S, Fernandes G-V, Resende R-F
1500 Park Ave. St. Louis 63104, MO, U.S.A.
Med Oral Patol Oral Cir Bucal. 2025 Jan 1;30(1):e129-e134. doi: 10.4317/medoral.26894.
The use of low-level laser is a therapeutic resource that has been widely used in medicine in general, which has properties capable of modulating inflammatory effects such as pain, edema, and trismus resulting from oral surgeries for the extraction of impacted third molars. This study aimed to evaluate the effect of laser therapy at two different wave frequencies (660nm and 808nm) in patients undergoing impacted 3rd third lower molar extraction. For this, 30 patients were selected and randomly distributed into three groups with 10 individuals each (Control Group, 660nm Group, and 808nm Group).
Each participant, according to their experimental group, received irradiation before the start of each surgery and immediately after the surgical procedure. The data regarding edema, pain intensity, and trismus collected before the surgeries, immediately after, and after seven days were spreadsheeted and analyzed to determine the mean and standard deviation. After the Shapiro-Wilk normality test, differences between the experimental groups were determined using Multiple Analyses of Variance, considering a significance level of 5% (p<0.05).
The results showed no statistically significant difference between the experimental groups in the analyzed items. Despite this, both groups irradiated with 660nm and 808nm frequencies experienced a reduction in the perception of postoperative pain, thus suggesting the benefit of using low-power laser therapy as an adjunct in the surgical treatment of impacted lower third molars.
Despite the results showing no differences between the groups, using LLLT resulted in lower pain perception in the irradiated participants compared to those in the control group. This fact supports the use of LLLT as an adjuvant therapy in patients undergoing oral surgery procedures to remove impacted third molars.
低强度激光的应用是一种治疗手段，已在医学领域广泛使用，它具有调节炎症效应的特性，如因拔除阻生第三磨牙的口腔手术所导致的疼痛、水肿和牙关紧闭。本研究旨在评估两种不同波长频率（660纳米和808纳米）的激光疗法对接受下颌第三磨牙拔除术患者的影响。为此，选取了30名患者并随机分为三组，每组10人（对照组、660纳米组和808纳米组）。
每位参与者根据其所在实验组，在每次手术开始前和手术结束后立即接受照射。将手术前、手术后即刻及术后七天收集的有关水肿、疼痛强度和牙关紧闭的数据制成电子表格并进行分析，以确定均值和标准差。经过夏皮罗-威尔克正态性检验后，使用多因素方差分析确定实验组之间的差异，显著性水平为5%（p<0.05）。
结果显示，各实验组在分析项目上无统计学显著差异。尽管如此，接受660纳米和808纳米频率照射的两组患者术后疼痛感知均有所减轻，这表明低功率激光疗法作为辅助手段用于治疗下颌阻生第三磨牙具有益处。
尽管结果显示各组之间无差异，但与对照组相比，接受低强度激光疗法（LLLT）照射的参与者疼痛感知较低。这一事实支持将LLLT用作接受口腔手术拔除阻生第三磨牙患者的辅助治疗方法。
