Moritz A, Schoop U, Goharkhay K, Schauer P, Doertbudak O, Wernisch J, Sperr W
Department of Conservative Dentistry, Dental School of the University of Vienna, Austria.
Lasers Surg Med. 1998;22(5):302-11. doi: 10.1002/(sici)1096-9101(1998)22:5<302::aid-lsm7>3.0.co;2-t.
The aim of this study is to examine the long-term effect of diode laser therapy on periodontal pockets with regard to its bactericidal abilities and the improvement of periodontal condition.
STUDY DESIGN/MATERIALS AND METHODS: Fifty patients were randomly subdivided into two groups (laser-group and control-group) and microbiologic samples were collected. There have been six appointments for 6 months following an exact treatment scheme. After evaluating periodontal indices (bleeding on probing, Quigley-Hein) including pocket depths and instruction of patients in oral hygiene and scaling therapy of all patients, the deepest pockets of each quadrant of the laser-group's patients were microbiologically examined. Afterwards, all teeth were treated with the diode laser. The control-group received the same treatment but instead of laser therapy were rinsed with H2O2. Each appointment also included a hygienic check-up. After 6 months the final values of the periodontal indices and further microbiologic samples were measured. The total bacterial count as well as specific bacteria, such as Actinobacillus actinomycetemcomitans, Prevotella intermedia, and Porphyromonas gingivalis, were assessed semiquantitatively.
The bacterial reduction with diode laser therapy was significantly better than in the control group. The index of bleeding on probing improved in 96.9% in the laser-group, whereas only 66.7% in the control group. Pocket depths could be more reduced in the laser group than in the control group.
The diode laser reveals a bactericidal effect and helps to reduce inflammation in the periodontal pockets in addition to scaling. The diode laser therapy, in combination with scaling, supports healing of the periodontal pockets through eliminating bacteria.
本研究旨在探讨二极管激光治疗对牙周袋的长期效果，包括其杀菌能力以及牙周状况的改善情况。
研究设计/材料与方法：50例患者被随机分为两组（激光组和对照组），并采集微生物样本。按照精确的治疗方案，在6个月内进行了6次复诊。在评估包括牙周袋深度在内的牙周指数（探诊出血、奎格利-海因指数）并对所有患者进行口腔卫生指导和洁治治疗后，对激光组患者每个象限最深的牙周袋进行微生物学检查。之后，所有牙齿均接受二极管激光治疗。对照组接受相同治疗，但用H2O2冲洗代替激光治疗。每次复诊还包括卫生检查。6个月后，测量牙周指数的最终值并采集进一步的微生物样本。对总细菌计数以及特定细菌，如伴放线放线杆菌、中间普氏菌和牙龈卟啉单胞菌进行半定量评估。
二极管激光治疗的细菌减少效果明显优于对照组。激光组探诊出血指数改善率为96.9%，而对照组仅为66.7%。激光组的牙周袋深度比对照组减少得更多。
二极管激光具有杀菌作用，除洁治外，还有助于减轻牙周袋内的炎症。二极管激光治疗与洁治相结合，通过消除细菌支持牙周袋的愈合。
