Performance of a novel polishing rubber wheel in improving surface roughness of feldspathic porcelain

Abstract

Replacing glazing with polishing is still controversial in terms of the surface roughness of dental porcelains. This study investigated the polishing performance of a ceramic-polishing rubber wheel (CP-RW), which contains large uniform and rounded silicon carbide particles and small diamond particles, in improving the surface roughness of two feldspathic porcelains for sintering and CAD/ CAM milling. Using a confocal laser scanning microscopy, the changes in the surface roughness parameters were evaluated before and after polishing or glazing for three surface treatment groups: SofLex polishing, CP-RW polishing, and Glazing. Regardless of the parameters, all treatments reduced roughness values (repeated measures ANOVA, p<0.05). The roughness values obtained after CP-RW polishing were lower than those obtained after SofLex polishing and glazing (2-way ANOVA, p<0.05). Polishing both ceramics with CP-RW made the surfaces smooth with the lowest roughness values in all parameters. The effect was dependent on the materials used.

Changes to Glazed Dental Ceramic Shade, Roughness, and Microhardness after Bleaching and Simulated Brushing

“…Regarding the diametrical traction test, the null hypothesis was accepted, since there was no difference between the groups. Tensile strength of a material may be related to sample thickness and amount of material . The minimum thickness for the material for optimal mechanical performance is 0.7 mm, according to the manufacturer.…”

“…Tensile strength of a material may be related to sample thickness and amount of material. 1 The minimum thickness for the material for optimal mechanical performance is 0.7 mm, according to the manufacturer. As sample preparation for the diametral tensile test followed guideline 27 from the ADA, the minimum thickness deemed necessary was respected, ensuring good diametral tensile strength despite the treatments applied to the ceramic surface.…”

“…Dental ceramics are used as restorative materials for a variety of clinical scenarios due to their esthetic properties, durability, and biocompatibility . Ceramic restorations can be manufactured via traditional laboratory methods as well as automated systems (computer‐aided design/computer‐aided manufacturing [CAD/CAM]).…”

An in Vitro Study to Evaluate the Color Stability of Four Different Cad/Cam Ceramics

“…(5)(6)(7)(8) Many types of CAD/CAM ceramic blocks have been developed for restoration fabrication, including feldspathic ceramic, leucite-reinforced ceramics, lithium disilicate ceramics, and zirconium oxide ceramics (9) . Feldspathic CAD/CAM ceramics are glass based ceramics with superior translucency, available in different shades but with a low flexural strength of 154 ± 0.5 MPa (10) . The presence of the glassy phase enables them to be etched and adhesively luted to the tooth structure.…”

Evaluation of the Surface Roughness and Transluceny For All Ceramics by in Vitro Testing Methods: Review

“…Yapılan in vitro çalışmalarda örnekler hazırlandıktan sonra standart oluşturmak için örnek yüzeyleri sırasıyla 100 grit, 220 grit , 240 grit, 400 grit, 600 grit, 800 grit, 1000 grit, 1200 grit zımpara kağıdı ile aşındırılır, bu işlemlerle standart oluşturulurken örneklerin inceltilmemesi amaçlanır (12)(13)(14).…”