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The Effects of Various Polishing Procedures on Surface Topography of CAD/CAM Resin Restoratives
Author(s) -
Kara Dilan,
Tekçe Neslihan,
Fidan Sinan,
Demirci Mustafa,
Tuncer Safa,
Balcı Sibel
Publication year - 2021
Publication title -
journal of prosthodontics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.902
H-Index - 60
eISSN - 1532-849X
pISSN - 1059-941X
DOI - 10.1111/jopr.13278
Subject(s) - polishing , glaze , materials science , surface roughness , mean value , composite material , mathematics , ceramic , statistics
Abstract Purpose To investigate the effects of different polishing procedures on surface properties of CAD/CAM resin blocks. Materials and Methods In this study, three different CAD/CAM restorative materials (Cerasmart, Lava Ultimate and Shofu Block HC) were used. CAD/CAM blocks were cut in 3‐mm‐thick slabs and divided into 5 groups. Group‐1: Glaze; Group‐2: Two‐step Diamond Polisher; Group‐3: One‐step Diamond Polisher; Group‐4: Three‐step Diamond Polisher; Group‐5: Polishing Discs+Diamond Paste. After polishing, top surfaces of the samples were prepared to screen by noncontact laser profilometer (Nanovea) for measurements. Data were analyzed using two‐way analysis of variance (ANOVA). Results The arithmetical mean deviation of the profile was defined as Ra. The extension of Ra (a line's arithmetical mean height) to a surface was defined as Sa. Compared to the arithmetical mean of the surface, Sa expresses the difference in terms of each point's height as an absolute value. Sa was commonly used to assess surface roughness. The highest surface roughness (Ra) values in this study were 0.313 ± 0.05 for Cerasmart, 0.433 ± 0.10 for Lava Ultimate and 0.320 ± 0.05 for Shofu Block HC. The specimens in Group‐4 displayed higher Ra values than other groups for each CAD/CAM material. According to surface topography (Sa) values, highest values were 2.936 ± 1.25 for Cerasmart, 2.633 ± 1.28 for Lava Ultimate and 3.489 ± 0.57 for Shofu Block HC. For Cerasmart, LAVA Ultimate and Shofu blocks, Group‐1 exhibited significantly higher Sa values than other groups ( p < 0.001). Conclusion Optiglaze Color, Sof‐Lex Diamond and Identoflex Diamond Ceramic Polisher create smooth CAD/CAM resin surfaces. However, surface roughness values of Cosmedent Nano/Microhybrid Diamond and Diapolisher Paste applied specimens were high. According to Sa values, highest roughness values belong to Optiglaze Color.