{"title":"Comparison of contrast ratio of two ceramics in two different thicknesses","authors":"Porak Sethakamnerd, C. Leevailoj","doi":"10.1109/TICST.2015.7369348","DOIUrl":null,"url":null,"abstract":"Purpose: To compare and evaluate the influence of material type and thickness on contrast ratio. Materials and Methods : A total of 36 disc-shaped specimens (15 mm diameter × 0.5 and 1.0 mm thicknesses) were fabricated from IPS e.max Press (n=12), Lava Plus (n=12), Lava Plus + Lava Ceram shade MO W1 (n=12). Contrast ratio was analyzed with two way ANOVA (P<;.05). Results: Contrast ratio of IPS e.max Press at 0.5 and 1.0 mm showed highest value (73.27 ± 4.37 and 87.30 ± 0.58) when compared to Lava Plus + Lava Ceram and Lava Plus groups. Higher contrast ratio significantly related to thicker material. Conclusion: Ceramic type and thickness had significant effect on contrast ratio. Contrast ratio increase as thickness increase.","PeriodicalId":251893,"journal":{"name":"2015 International Conference on Science and Technology (TICST)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 International Conference on Science and Technology (TICST)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/TICST.2015.7369348","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Purpose: To compare and evaluate the influence of material type and thickness on contrast ratio. Materials and Methods : A total of 36 disc-shaped specimens (15 mm diameter × 0.5 and 1.0 mm thicknesses) were fabricated from IPS e.max Press (n=12), Lava Plus (n=12), Lava Plus + Lava Ceram shade MO W1 (n=12). Contrast ratio was analyzed with two way ANOVA (P<;.05). Results: Contrast ratio of IPS e.max Press at 0.5 and 1.0 mm showed highest value (73.27 ± 4.37 and 87.30 ± 0.58) when compared to Lava Plus + Lava Ceram and Lava Plus groups. Higher contrast ratio significantly related to thicker material. Conclusion: Ceramic type and thickness had significant effect on contrast ratio. Contrast ratio increase as thickness increase.
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