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ISSN 2063-5346
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COMPARATIVE EVALUATION OF SURFACE AND OPTICAL PROPERTIES OF EXTRINSICALLY STAINED CAD CAM MILLED GLASS CERAMIC: AN IN-VITRO STUDY

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Ishita Gupta1*, Deepesh Saxena2, Anshul Trivedi3, Sumit Aggarwal4, Yashika Bali5, Pratik Bhatnagar6
» doi: 10.48047/ecb/2023.12.si5a.0213

Abstract

Background: To analyze the effect of toothbrushing on extrinsically stained glass ceramic. Aims: This study assesses the optical and surface property of extrinsically stained cad cam milled leucitereinforced glass ceramic after tooth brushing over a time interval of 3,6,9,12 years. Settings and Design: This in-vitro study was conducted in the Department of Prosthodontics and Crown & Bridge, Subharti Dental College, and Hospital, Meerut. Methods and Material: The material leucite-reinforced glass ceramic (IPS Empress CAD) cad cam milled was used in this study. It was studied in the form of disc-shaped specimens (n=30), 10mm diameter and 3mm thickness. Three different methods of applying extrinsic stain were performed on each material: Glazed (n=10); Stain then Glaze (n=10); Stained and Glazed together (n=10). Above specimens were brushed using a multistation brushing machine for 72, 144, 216, and 288 hours. Surface roughness, shade, and gloss were evaluated and compared. Statistical analysis used: One way ANOVA-F, Two way ANOVA-F test, unpaired-t test. Results: Statistically significant differences were found in shade change, surface roughness and gloss in all groups after 12 years of simulated toothbrushing. Conclusions: The study concluded that for the shade change method of stained and glazing together was found to be most effective followed by stained and glazed together and glazed only. Method of stained then glazing was found most effective followed by glazed only and stained and glazed together in surface roughness. Method of stained and glazed together was found most effective followed by glazed only and stained then glazed for gloss.

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