Goodis H E, White J M, Marshall S J, Marshall G W
Division of Biomaterials, Endodontics, School of Dentistry, University of California, San Francisco 94143-0758.
Scanning Microsc. 1993 Sep;7(3):979-87.
Conventional cleaning and shaping of root canal spaces involves the use of hand and rotary instruments with irrigation. The procedure results in the formation of a smear layer consisting of dentin shavings, organic tissue remnants and microorganisms. The laser has been suggested as an aid in root canal preparation. In this study, pulsed and continuous wave 1.06 microns wavelength Nd:YAG lasers were used to compare their abilities to clean and shape root canal spaces to conventional methods. After preparation, the test teeth were sectioned longitudinally and examined by scanning electron microscopy. The results demonstrated that the laser was capable of removing the smear layer in its entirety and could occasionally alter dentin walls.
传统的根管空间清理和塑形需要使用手动和旋转器械并配合冲洗。该操作会形成由牙本质碎屑、有机组织残余物和微生物组成的玷污层。激光已被提议作为根管预备的辅助手段。在本研究中，使用脉冲和连续波1.06微米波长的Nd:YAG激光，将它们清理和塑形根管空间的能力与传统方法进行比较。预备完成后，将测试牙齿纵向切片并通过扫描电子显微镜检查。结果表明，激光能够完全去除玷污层，并且偶尔会改变牙本质壁。
