Turhani Dritan, Scheriau Martina, Kapral David, Benesch Thomas, Jonke Erwin, Bantleon Hans Peter
Department of Oral and Maxillofacial Surgery, Medical University of Vienna, Vienna, Austria.
Am J Orthod Dentofacial Orthop. 2006 Sep;130(3):371-7. doi: 10.1016/j.ajodo.2005.04.036.
The objective of this study was to analyze the effect of single low-level laser therapy (LLLT) irradiation on pain perception in patients having fixed appliance treatment.
Seventy-six patients (46 women, 30 men; mean age, 23.1 years) enrolled in this single-blind study were assigned to 2 groups. The patients in group 1 (G1; 38 patients, 13 men, 25 women; mean age, 25.1 years) received a single course of LLLT (Mini Laser 2075, Helbo Photodynamic Systems GmbH & Co KG, Linz, Austria; wavelength 670 nm, power output 75 mW) for 30 seconds per banded tooth. The patients in group 2 (G2; 38 patients, 17 men, 21 women; mean age, 21.0 years) received placebo laser therapy without active laser irradiation. Pain perception was evaluated at 6, 30, and 54 hours after LLLT by self-rating with a standardized questionnaire.
Major differences in pain perception were found between the 2 groups. The number of patients reporting pain at 6 hours was significantly lower in G1 (n = 14) than in G2 (n = 29) (P <.05), and the differences persisted at 30 hours (G1, n = 22; G2, n = 33) (P <.05). At 54 hours, no significant differences were seen between the number of patients reporting pain (G1, n = 20; G2, n = 25), although the women had a different prevalence between G1 (n = 11) and G2 (n = 15) (P = .079). At 6, 30, and 54 hours, more than 90% of the subjects in both groups described the pain as "tearing."
LLLT immediately after multibanding reduced the prevalence of pain perception at 6 and 30 hours. LLLT might have positive effects in orthodontic patients not only immediately after multibanding, but also for preventing pain during treatment.
本研究的目的是分析单次低强度激光疗法（LLLT）照射对接受固定矫治器治疗患者疼痛感知的影响。
本单盲研究纳入76例患者（46例女性，30例男性；平均年龄23.1岁），分为2组。第1组（G1；38例患者，13例男性，25例女性；平均年龄25.1岁）每颗结扎牙接受单次LLLT治疗（Mini Laser 2075，Helbo Photodynamic Systems GmbH & Co KG，奥地利林茨；波长670 nm，输出功率75 mW），持续30秒。第2组（G2；38例患者，17例男性，21例女性；平均年龄21.0岁）接受无活性激光照射的安慰剂激光治疗。在LLLT治疗后6、30和54小时，通过标准化问卷自评评估疼痛感知。
两组之间在疼痛感知方面存在显著差异。G1组在6小时报告疼痛的患者数量（n = 1）明显低于G2组（n = 29）（P <.05），且在30小时差异仍然存在（G1组，n = 22；G2组，n = 33）（P <.05）。在54小时，报告疼痛的患者数量之间未见显著差异（G1组，n = 20；G2组，n = 25），尽管女性在G1组（n = 11）和G2组（n = 15）中的患病率有所不同（P =.079）。在6、30和54小时，两组中超过90%的受试者将疼痛描述为“撕裂样”。
多带环结扎后立即进行LLLT可降低6小时和30小时疼痛感知的发生率。LLLT不仅在多带环结扎后立即对正畸患者有积极作用，而且对治疗期间预防疼痛也可能有积极作用。
