Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Sao Paulo, Sao Paulo, Brazil.
Department of Oral and Maxillofacial Surgery, Santa Catarina Hospital, Sao Paulo, Brazil.
J Biophotonics. 2023 Jul;16(7):e202300011. doi: 10.1002/jbio.202300011. Epub 2023 May 4.
This study aimed to evaluate the effectiveness of photobiomodulation (PBM) therapy using 940-nm laser in patients undergoing orthognathic surgery. Twenty individuals were randomly distributed into laser (n = 10) and control (n = 10) groups. The PBM was conducted immediately after surgery, after 24 h, 48 h, and weekly for up to 4 weeks. All participants were evaluated for pain, edema, trismus and paresthesia. Data were compared by Fisher's and Mann-Whitney or chi-square tests (5%). The pain decreased from 24 h to 4 weeks, with the laser group reaching any pain after 3 weeks (p < 0.001). A significant difference was noticed for trismus on days 14 and 30 (p = 0.002; p = 0.019), without difference in paresthesia (p = 0.198). Edema was lower on the laser group compared to control, without a significant difference for most measurements. Data indicate that 940-nm PBM therapy decreased the occurrence of postoperative pain and significantly improved trismus.
本研究旨在评估 940nm 激光的光生物调节（PBM）疗法在接受正颌手术患者中的疗效。20 名患者被随机分为激光组（n=10）和对照组（n=10）。PBM 在手术后立即进行，之后分别在 24 小时、48 小时和每周进行，持续 4 周。所有参与者均评估疼痛、肿胀、牙关紧闭和感觉异常。采用 Fisher 和 Mann-Whitney 或卡方检验（5%）比较数据。疼痛从 24 小时到 4 周逐渐减轻，激光组在 3 周后达到任何疼痛（p<0.001）。第 14 天和第 30 天的张口度有显著差异（p=0.002；p=0.019），但感觉异常无差异（p=0.198）。与对照组相比，激光组的肿胀程度较低，但大多数测量值无显著差异。数据表明，940nm PBM 疗法可减少术后疼痛的发生，并显著改善牙关紧闭。
