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7 September 1994 Evaluation of the CO2 laser for porcelain laminate etching
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Research has shown that CO2 laser energy can both fuse and etch enamel, the effect being dependent on the exposure parameters utilized. Such energy can also fuse dental porcelains, but it is not known whether porcelain can be etched by CO2 laser. The objective of this study was to evaluate whether CO2 laser energy can be utilized to etch porcelain laminates, an effect necessary for resin bonding. Porcelain laminate disks 10 mm in diameter were prepared. The disks were each numbered and divided into quadrants with a small carbide high speed bur. Six disks were utilized, each quadrant receiving a single laser exposure for a total of 24 exposures. Each exposure was at either 10 or 15 W for .01, .05, or .10 seconds, with a focal spot of either 0.8 or 0.35 mm. This range of exposures includes those exposures which cause enamel etching. Two exposures were made at each combination of exposure parameters. Each disk was prepared for scanning electron microscopy and viewed at 75X to examine the exposure sites. All 24 exposure sites were examined and no definite etching was observed.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T. S. Rypel and Kenneth L. Zakariasen D.D.S. "Evaluation of the CO2 laser for porcelain laminate etching", Proc. SPIE 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV, (7 September 1994);

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