口腔光动力疗法研究进展

光动力学疗法(PDT)是20世纪70年代末形成的治疗新技术,近年来已从实验研究进入到临床应用阶段,其机理是建立在某些特定类型的细胞或生物体能选择性吸收光敏型的药物,在接受特定波长光照射后产生光敏效应的一种治疗方法.目前主要应用于体表和空腔脏器表面的浅表肿瘤的非手术治疗,由于发现光敏剂对肿瘤以外的多种病变组织和病原微生物具有选择件聚集以及新型光敏剂的开发,使光动力疗法在现代临床中应用领域不断扩大.从光动力治疗的效应机制、光动力治疗的光源与光敏剂以及在口腔医学领域中对头颈部肿瘤、黏膜病、口腔致病微生物感染的治疗等方面的应用研究进展进行了综述.

Research progress on photodynamic therapy in dentistry

As a new technique, photedynamic therapy was introduced in the end of 1970s and has been put into clinical application from experimental tests in recent years. Its mechanisms was established on the basis that a series of special typed cells and tissues could selectively absorb photosensitive drugs and generate photore-sponsive effects by light irradiation of definite wavelengths. Currently, the photodynamic theraputics is applied mainly in non surgical treatment of tumor betided in body superfacial and hollow viscus. Its application area has been expanded unceasingly in modern clinic due to the discovery of the selective aggregation of photoresponsive drugs to many pathological tissues and pathogenic microorganisms other than tumors, and the development of new photoresensitizer. In this paper, review is given on the effect mechanisms, the light sources and photosensitizer, as well as the application of photodynamic treatment of tumors in head and neck and its treatments of mucosal dis-ease and oral pathogenic microorganism infected diseases.