Study of Er:YAG laser application to non-surgical and surgical periodontal treatment

1)对Er:YAG激光皮瓣术后犬牙周组织愈合情况进行组织学观察，并与机械治疗进行比较。Er:YAG激光照射可有效地进行分叉处的脱颗粒和根清创，无明显的热损伤，且明显快于电流。组织学上，激光组新形成骨的数量明显大于电流组，尽管两组显示出相似数量的骨质形成和结缔组织附着。Er:YAG激光照射可以安全有效地应用于牙周瓣手术，并具有促进新骨形成的潜力。2)对犬牙周瓣手术中病变牙骨质Er:YAG激光清创后的愈合情况进行组织学观察。Er:YAG激光清创有效、安全，创面愈合与机械治疗相似。3)临床应用Er:YAG激光在皮瓣手术中进行脱肉芽和根清创。使用Er:YAG激光器有效地完成了该过程。验证了激光应用的有效性和安全性。4)在体外研究中揭示了激光根表面化学/机械调节在恢复生物相容性方面的有效性。5)研究了低能量Er:YAG激光对人牙龈成纤维细胞增殖的刺激作用，并提示激光应用的治疗效果。6)介绍了Er:YAG激光结合显微镜治疗牙龈纹身的新方法。7)测定牙周组织的反射、透射、吸光度等光学特性，得到重要发现。

1) The periodontal tissue healing following flap surgery using an Er:YAG laser was examined histologically in dogs, in comparison with that of mechanical treatment. Degranulation and root debridement in the furcation involvement were effectively performed with Er:YAG laser irradiation without major thermal damage and significantly faster than with a curet. Histologically, the amount of newly formed bone was significantly greater in the laser group than in the curet group, although both groups showed similar amounts of cementum formation and connective tissue attachment. Er:YAG laser irradiation can be safely and effectively utilized in periodontal flap surgery, and has the potential to promote new bone formation.2) The healing after Er:YAG laser debridement of the diseased cementum during periodontal flap surgery was examined histologically in dogs. Debridement with the Er:YAG laser was performed effectively and safely and the wound healing was similar to that in the mechanical treatment.3) The Er:YAG laser was clinically applied for degranulation and root debridement during flap surgery. The procedures were effectively performed using an Er:YAG laser. The usefulness and safety of the laser application was confirmed.4) The effectiveness of chemical/mechanical conditioning of the lased root surface in recovering biocompatibility was revealed in an in vitro study.5) Stimulatory effects of a low energy-level Er:YAG laser on cell proliferation of human gingival fibroblasts were demonstrated and the therapeutic benefit of the laser application was suggested.6) A new method to treat gingival tattoo using an Er:YAG laser in combination with a microscope was introduced.7) Optical properties, such as reflection, transmission and absorbance, of periodontal tissues were determined and important findings were obtained.