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KMID : 1023420160160020150
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Journal of Dental Hygiene Science
2016 Volume.16 No. 2 p.150 ~ p.156
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Color Stability of Self-Cured Temporary Crown Resin according to Different Surface Treatments
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Park Ji-Won
Bae Sung-Suk
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Abstract
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In this study, the surface treatment of a self-cured temporary crown was polished using a denture bur, silicone bur, or pumice. The color stabilityof the temporary crown resin specimen was evaluated by immersing it in coffee, and cola, wine, beer, red pepper paste, or soybean paste. Two-hundred eighty-five identical resin specimens with six types of staining solution and three types of surface treatment were placed in a shakingincubator at 37oC. The degree of discoloration was observed using a time-lapse recording of days 1, 5, and 7. L*, a*, and b* were measured usinga spectrophotometer, which shows the quantitative value of discoloration, and statistically processed after calculating ΔE*. The results show thatas time passed, all the specimens showed a color change (p＜0.001). The amount of color change was the greatest in in crowns with denture burpolishing on the day 1, 5, and 7. As the precipitation time increased, the ΔE* value was also increased. Of the specimens immersed on day 1, thegreatest color change in crowns polished with denture bur was observed in those immersed in red pepper paste, while the smallest color changewas observed in those immersed in cola. On days 5 and 7, the greatest color change in crowns polished with denture bur was observed in thoseimmersed in red wine. Crowns polished with silicone bur and immersed in soybean paste exhibited the smallest color change. Based on the results,compared to pumice polishing, silicone bur polishing results in better color stability, saves time and money, and is recommended for patients withtemporary crowns.
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KEYWORD
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Color stability, Self-cured temporary crown resin, Surface treatment
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