Frentzen M, Koort H J, Kermani O, Dardenne M U
Dtsch Zahnarztl Z. 1989 Jun;44(6):454-7.
In this study the possible application of photoablation with an Excimer UV laser for the creation of retentive surfaces was studied as an alternative to conventional enamel conditioning methods using acids. Surfaces of untreated enamel and of prepared cavities were irradiated with an argon fluoride Excimer laser at a wavelength of 193nm and evaluated in a scanning electron microscope. The bond strength of composites to these surfaces was measured in tear tests. "Laser conditioning" left the surfaces similarly roughened as chemical etching. The variable extension of the laser field allows a sharp delineation of the area to be conditioned. The tear tests with human tooth enamel showed bond strength values corresponding to approx. 75% of those obtained by acid etching techniques. The question if these bonds are durable is the subject of current studies.
在本研究中，对用准分子紫外激光进行光蚀除以形成固位表面作为使用酸的传统釉质预处理方法的替代方法的可能性进行了研究。用波长为193nm的氟化氩准分子激光照射未处理釉质表面和制备好的窝洞表面，并在扫描电子显微镜下进行评估。在撕裂试验中测量复合材料与这些表面的粘结强度。“激光预处理”使表面粗糙度与化学蚀刻相似。激光场的可变范围允许对要预处理的区域进行清晰的界定。用人牙釉质进行的撕裂试验显示，粘结强度值约为酸蚀技术所获值的75%。这些粘结是否持久的问题是当前研究的主题。
