Sancak, Elif İ.; Bilgin, Selen Bozkaya; Tekçe, Neslihan; Sarıhan, Kübra Kavram

The aim of this study is to examine the discoloration in CAD/CAM materials used in dentistry after 4-years of contact with water, which is the environment to which they are most exposed in the oral cavity. Three different A2-colored resin-based CAD/CAM blocks (Cerasmart, Coltene Brilliant Crios and Shofu Block HC) were used in our study. A total of 180 specimens, 60 of each CAD/CAM material, were prepared with a thickness of 2-mm. Then, each material was divided into three different groups based on the polishing systems (Coltene Diatech, Sof-Lex Diamond, Identoflex Diamond Ceramic) applied in accordance with the recommendations of the manufacturing companies (n:20). The discoloration of the materials on a white background and under natural light sources at the beginning and after being stored in distilled water for 4-years were measured with the VITA EasyshadeV spectrophotometer. All the obtained data were examined using the Kolmogorov Smirnov and Shapiro Wilk Normality Test values. After the water aging process, no statistically significant difference was found between the Cerasmart (p=1.51; p>0.05) and Shofu (p=0.95; p>0.05) CAD/CAM material groups using three different polishing systems. A statistically significant difference was found between all polishing system groups of Coltene CAD/ CAM materials (p=0.00). All CAD/CAM materials showed color changes above the ΔE00≤0.8 perceptibility threshold after being aged in distilled water for 4 years. Cerasmart CAD/CAM blocks (Coltene ΔE00=1.33, Sof-lex ΔE00=1.43, Identoflex ΔE00=1.69) showed color changes below the ΔE00≤1.8 acceptability threshold in all groups where different polishing systems were applied, while Coltene (Coltene ΔE00=3.7, Sof-lex ΔE00=3.81, Identoflex ΔE00=4.69) and Shofu (Coltene ΔE00=2.33, Sof-lex ΔE00=1.74, Identoflex ΔE00=1.91) blocks showed color changes above the acceptable threshold value.

İncele

Bilgin, Selen Bozkaya; Tekçe, Neslihan

Purpose The objective of this study was to investigate the color changes of various computer-aided design/computer-aided manufacturing (CAD/CAM) materials polished with different polishing systems and immersed in various colored drinks. Materials and Methods Three different resin-based CAD/CAM blocks (Cerasmart, Coltene Brilliant Crios, and SHOFU Block HC) were utilized. A total of 540 CAD/CAM blocks were prepared with a thickness of 2 mm and categorized into three main groups based on the polishing systems employed. The Sof-Lex, Identoflex, and Coltene Diatech polishing systems were administered to the materials. Subsequently, the specimens were further subdivided into three subgroups and immersed in three different colored solutions for one hour twice a day for 15 days. Filter coffee, cola, and distilled water served as the coloring agents. Color measurements were conducted at baseline and on Days 1, 7, and 15 using the VITA Easyshade compact spectrophotometer device. Results By the end of Day 15, Cerasmart specimens exhibited the least color change when immersed in coffee and distilled water, whereas Coltene specimens demonstrated the least color change when subjected to cola. Irrespective of the CAD/CAM blocks and polishing systems utilized, a statistically significant difference was observed among the beverages (p<0.001). Particularly, coffee induced a more pronounced color change compared to the other beverages (p<0.001). Conclusion The ΔE value increases proportionally with the duration of immersion in colored drinks. Specimens immersed in coffee displayed the highest color change for each CAD/CAM material.

AtıfScopus2·WoS2

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