Optical Properties of Newly Developed Monolithic CAD/CAM Materials After Aging

IF 0.3 Q4 MEDICINE, RESEARCH & EXPERIMENTAL Clinical and Experimental Health Sciences Pub Date : 2023-01-17 DOI:10.33808/clinexphealthsci.1185717
Hatice Banu UYSAL ÖZEL, Yılmaz Umut Aslan, Erkan Sancakli
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Abstract

Objective: With the widespread use of CAD/CAM (computer aided design and manufacture) systems in dentistry, many restorative materials have been produced. In our study, we aimed to evaluate the change in optical properties of newly developed translucent monolithic zirconia (TMZ) (Cercon HT Dentsply, Sirona, USA), zirconia-reinforced lithium silicate (ZLS) (Celtra Duo, Dentsply, Germany) and lithium disilicate (LS2) (IPS e.max CAD, Ivoclar Vivadent, Liechtenstein) materials with aging. Methods:10 discs of 12mm diameter and 1.2 mm thickness were produced from high translucent A2 color of each material. The aging process was applied in an autoclave under 134ºC, 0.2MPa pressure. For optical evaluation, L*, a*, b* values of the samples were measured by spectrophotometry before aging, after 3 hours and 6 hours aging. ΔE00 values and translucency parameters (TP) were calculated. The data were evaluated statistically. Results: In the present study, all the materials had undergone color change as a result of aging, but this change was within acceptable limits (ΔE00 0.8). There was a decrease in the translucency of all materials used in the study, but this decrease was not statistically significant. Conclusion: In the light of the findings obtained from this in vitro study, aging did not cause color and translucency changes in TMZ, ZLS, LS2 monolithic CAD/CAM materials.
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新开发的单片CAD/CAM材料老化后的光学性能
目的:随着计算机辅助设计与制造系统在牙科中的广泛应用,产生了许多修复材料。在我们的研究中,我们旨在评估新开发的半透明单片氧化锆(TMZ)(Cercon HT Dentsply,美国Sirona)、氧化锆增强硅酸锂(ZLS)(Celtra Duo,Dentspli,德国)和二硅酸锂(LS2)(IPS e.max CAD,Ivoclar Vivadent,列支敦士登)材料的光学性能随老化的变化。方法:用每种材料的高透光A2色制作10个直径12mm、厚度1.2mm的椎间盘。在134ºC、0.2MPa压力下的高压釜中进行老化处理。对于光学评价,在老化前、老化3小时和老化6小时后通过分光光度法测量样品的L*、a*、b*值。ΔE00值和半透明性参数(TP)。对数据进行了统计评估。结果:在本研究中,所有材料都因老化而发生了颜色变化,但这种变化在可接受的范围内(ΔE00 0.8)。研究中使用的所有材料的半透明性都有所下降,但这种下降没有统计学意义。结论:根据本体外研究的结果,TMZ、ZLS、LS2单片CAD/CAM材料的老化不会引起颜色和半透明性的变化。
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Clinical and Experimental Health Sciences
Clinical and Experimental Health Sciences MEDICINE, RESEARCH & EXPERIMENTAL-
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