Amorim José Cláudio Faria, de Sousa Gerdal Roberto, de Barros Silveira Lívio, Prates Renato Araújo, Pinotti Marcos, Ribeiro Martha Simões
Department of Mechanical Engineering, Pampulha, Belo Horizonte, Brazil.
Photomed Laser Surg. 2006 Oct;24(5):588-94. doi: 10.1089/pho.2006.24.588.
The purpose of this study was to investigate gingival healing after gingivectomy and adjunctive use of low-level laser therapy (LLLT).
LLLT has been used in animal experiments to examine the influence of laser radiation on the wound healing process since the 1960s. However, clinical trials in dentistry are scarce, and most of them refer to treatment after extraction of the third molars, with only a few reports in the area of periodontics.
Twenty patients with periodontal disease were selected, and treatment was planned for gingivectomy to bilateral maxillary and mandibular premolar teeth. After surgery, one side was submitted to LLLT using a 685-nm wavelength, output power of 50 mW, and energy density of 4 J/cm(2). The other side was used as the control and did not receive laser irradiation. Healing was evaluated, clinically and biometrically, immediately post-surgery and at days 3, 7, 14, 21, 28, and 35. Results were submitted to statistical analysis.
Biometrical evaluation indicated a significant improvement in healing for the laser group at 21 and 28 days. Clinical evaluation showed better repair for the laser group, mainly after the third day.
LLLT was an effective adjunctive treatment that appeared to promote healing following gingivectomy.
本研究旨在调查牙龈切除术后联合使用低强度激光治疗（LLLT）后的牙龈愈合情况。
自20世纪60年代以来，LLLT已用于动物实验，以研究激光辐射对伤口愈合过程的影响。然而，牙科领域的临床试验较少，且大多数涉及第三磨牙拔除后的治疗，牙周病领域仅有少数报道。
选取20例牙周病患者，计划对双侧上颌和下颌前磨牙进行牙龈切除术。术后，一侧使用波长685nm、输出功率50mW、能量密度4J/cm²的LLLT进行治疗。另一侧作为对照，不接受激光照射。在术后即刻以及第3、7、14、21、28和35天对愈合情况进行临床和生物测量评估。将结果进行统计学分析。
生物测量评估表明，激光组在第21天和28天时愈合情况有显著改善。临床评估显示，激光组的修复效果更好，主要在第三天之后。
LLLT是一种有效的辅助治疗方法，似乎能促进牙龈切除术后的愈合。
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