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Volume 22 , Issue 5
September/October 2009

Pages 472475

Short Communication: The Effects of Extraoral Porcelain Polishing Sequences on Surface Roughness and Color of Feldspathic Porcelain

Bulem Yuzugullu, DDS, PhD/Cigdem Celik, DDS, PhD/Selim Erkut, DDS, PhD/Tuncer Burak Ozcelik, DDS, PhD

PMID: 20095196

The aim of this study was to evaluate the surface properties and color of porcelain modified by extraoral polishing sequences. Six different surface treatment regimens (diamond burs, self-glaze, overglaze, reglaze, Pearl Surface polishing system, and Diamond Twist SCL) were applied to 60 porcelain disks (n = 10 per group). Profilometry and atomic force microscopy (AFM) were used for the determination of surface roughness (Ra); color changes (DE*) were investigated by spectrophotometry. Statistical comparisons were made using analysis of variance, the Kruskal-Wallis test, and the Pearson correlation coefficient test. Surface treatments significantly affected Ra values (P < .001) but had no effect on color (P > .05). AFM findings were consistent with Ra values. Color did not appear to be correlated with surface roughness (P > .05). The findings concluded that the Pearl Surface system helps to decrease chairside time and may be used as an alternative to overglazing. Int J Prosthodont 2009;22:472475.

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