지르코니아 코어의 두께에 따른 변색치와 메탈 포스트의 색조차단 효과
Effect of Zirconia Core Thickness on the Tone Blocking of Discolored Tooth and Metal Post
오선미, 이채현,
소속 상세정보
오선미 ( O Seon-Mi ) - 배재대학교 재료공학과
이채현 ( Lee Chae-Hyun ) - 배재대학교 재료공학과
KMID : 0362120100320040335
Abstract
Purpose: The purpose of this study was to investigate the correlation between zirconia core thickness and color tone blocking of discolored tooth and metal post.
Methods: For this study, we made 20-porcelain sample and 4-metal sample( liechtenstein IPS e.max) bonded to zirconia core of different thickness with cement(Relyx ARC-3M USA)for produce discolored. We measured the color-spectral characteristics, using Shadepilot equipment(Degudent USA).We measured it with Shadepilot equipment set by automated average mode in 3 times And applied the average value obtained from 2 times of measurement in the middle of each sample.
Results: As a result of analysing color-spectral characteristics on zirconia core sample, Depending on the thickness of zirconia core, the value of brightness(ΔL :color-spectral characteristic) was increased within limited range, value of Δa, Δb was decrease.
Conclusion: Consequently, we obtained the following results : Changes of sample color were observed depending on the thickness of zirconia, but the range of change did not exceed the scope range of shade guide. The case of metal posts, shade guide color D2 were observed in 0.5 of zirconia core thickness. As a result, in case of porcelain, increasing the zirconia thickness of 0.3 or more is unnecessary for color blocking effect, in case of metal post, considering the discolored tooth, thickness of zirconia with at least 0.5 or more is recommended.
키워드
Zirconia core;Tone blocking;Discolored tooth;Metal post
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