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808nm二极管激光对SD大鼠种植体周围炎模型细菌去污的影响

摘要

种植体周围炎是一种影响种植体周围软组织和牙槽骨的炎症。这种情况会导致躁动甚至植入物丢失。种植体污染引起的细菌感染是引起种植体周围炎的已知原因之一。感染性细菌病原体包括放线菌聚集杆菌、嗜碳细胞菌和有核梭杆菌。已经评估了各种非侵入性方法来消除这些污染物。本研究探讨了二极管激光照射在种植体周围炎模型中去除种植体表面和邻近区域污染的效果。12周龄sd大鼠(最小体重300 g)分为对照组和3个植入组。喷砂酸蚀钛螺丝(SLA-TS;1.2 × 4.0 mm)分别植入未感染的SLA-TS种植体组、种植体周围炎感染组和激光治疗的种植体周围炎感染组大鼠硬腭。采用808 nm二极管激光在0.5 W功率下连续照射15 s治疗种植体周围炎症软组织和牙槽骨。 The degree of contamination on implant surfaces was evaluated by scanning electron microscopy (SEM), and the proliferation of periodontopathic bacteria in each group was analyzed by quantitative-polymerase chain reaction. The efficacy of laser treatment was evaluated in terms of increase in temperature of the mouth, surface changes of implants, and decrease in bacterial load. Our results indicated that laser irradiation resulted in a significant decrease of periodontopathic bacterial titer, without causing denaturation of implant surfaces.

李成浩，金伟峰，金润敬，徐娜里，朱敬元，林浩庆，卞秀焕，林荣俊，金成民，李钟浩

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