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지르코니아-전장도재 계면의 전단결합강도에 대한 ZirLinerⓇ적용과 분사처리의 영향에 관한 연구

Effect of Application of ZirLiner and Blasting Treatments on Shear Bond Strength of Zirconia-Veneered Porcelain Interface

이유나|오상천|동진근|신영호|이해형
대한턱관절교합학회 (Korean academy of stomatognathic function and occlusion)|2008.03|구강회복응용과학지 (Journal of Dental Rehabilitation and Applied Science)|제24권 제1호|pp. 113-127

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참고문헌

주제분류치의학

초록

이 연구의 목적은 지르코니아 도재 표면의 전단 결합 강도에서 ZirLinerⓇ와 블라스팅 처리의 적용 효과를 평가하기 위한 것이다. 60개의 무색의 지르코니아 판과 30개의 색이 있는 지르코니아 판이 규격화되고 연마, 글래스블라스팅, 알루미나블라스팅, 그리고 zirliner 같은 블라스팅 처리를 적용시키는 것에 따라 10개씩 9개의 그룹으로 나누어졌다. 시편을 고정대에 위치하고 만능시험기로 전단력을 측정하였다. 파절된 견본의 파절 표면은 SEM으로 검사되었다. 각 군별 시편을 통계처리하여 그 결과를 비교하였다.

Abstract

The purpose of this study was to evaluate effect of application of ZirLinerⓇ and blasting treatments on shear bond strength of zirconia-veneered porcelain interface. 60 uncolored zirconia plates and 30 colored zirconia plates were fabricated and divided into nine groups of 10 according to blasting treatment such as as-ground, glass blasting and alumina blasting and zirliner application. Veneering porcelains were built up over the center of the treated zirconia ceramic surface using jig and fired according to the manufacturers' instructions. Each specimen was completely embedded in acrylic resin. The specimens were placed in a mounting jig and subjected to shear force by a universal testing machine. Load was applied at a crosshead speed of 0.5㎜/min until failure. Average shear strengths were analyzed with two-way analysis of variance and one-way analysis of variance and the Duncan's post-hoc test. The fracture surfaces of the failed specimens were examined by SEM. The obtained results were as follows: 1. Depending on surface treatment by blasting, the degree of roughness is revealed in the order of Glass-blasted, As-ground, and Alumnia-blasted. The roughness average of uncolored and colored zirconia ceramic were not significantly different from blasting treatments. 2. In uncolored zirconia ceramic, the shear bond strength were not significantly different from blasting treatments. However, the shear bond strength were significantly different from Zirliner application. 3. Used ZirLiner, mean shear bond strength of colored zirconia was lower than uncolored zirconia. Especially, mean shear bond strength of colored zirconia was quite low with alumina-blasting treatment. 4. SEM analysis showed that veneered porcelain failed in zirconia ceramic interface and there was no cohesive failure.

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