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학위논문
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신천호 (가천대학교, 가천대학교 보건대학원)

지도교수
한경순
발행연도
2013
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가천대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (2)

초록· 키워드

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본 연구는 지르코니아 코어의 표면 처리에 따라 전단결합강도에 미치는 영향을 파악하기 위하여 진행되었다.
연구방법은 유색 지르코니아 코어로 만들기 위해서 제조사의 지시에 따라 colouring liquid에 2분 간 침전 후 꺼내어 건조한 후 시편을 제작하였다. 제작된 시편은 4개 군으로 분리하였고, 각 군별 시편 표면의 거칠기 처리와 line 도포 처리 방법을 다르게 한 후 전단결합강도를 시험하였다. 방법으로는 ISO/TS 11405에 따른 장치에 옮긴 후 인스트론 만능시험기(Intron 8871, Instron Co. Canton, USA)를 이용하여 분당 1 ㎜의 전단 속도로 전단결합강도를 시험하였다.
4개 군의 전단결합강도 차이를 one way ANOVA를 이용하여 분석한 결과 표면 거칠기와 liner를 도포한 군(SLT)이 23.19 MPa로 높았고, 다음으로 표면 거칠기만 적용한 군(ST)은 21.17 MPa였으며, liner 만 적용한 군(LT)이 20.53 MPa였고, 표면 비처리 군(NT)은 16.46 MPa으로 가장 낮은 값을 나타냈다(P=0.176). 표면 거칠기와 liner를 도포한 군(SLT)과 표면 비처리 군(NT)과의 비교를 위한 t-test 결과 2개 군의 차이는 통계적으로 유의하였다(P<0.05). 또한 도재의 표면조도는 표면 거칠기를 적용한 군이 적용하지 않은 군보다 유의하게 높게 나타났다(P<0.001).

목차

목차
표 및 그림 목차······················································ⅱ
감사의 글 ·······························································ⅲ
국문요약 ································································ⅳ
Ⅰ. 서론 ·······························································1
Ⅱ. 실험재료 및 방법
1. 실험재료 및 시편 제작 ·····························4
2. 표면 처리 ····················································5
3. 도재 축성 ····················································6
4. 표면조도 측정 ············································7
5. 결합강도 측정 ············································8
6. 계면상태 측정 ············································9
7. 통계분석 ·····················································10
Ⅲ. 실험결과
1. 표면조도 ·····················································11
2. 전단결합강도 ·············································12
3. 계면상태 ·····················································13
Ⅳ. 고찰 ································································19
Ⅴ. 결론 ································································20
참고문헌 ······························································21
Abstract ·······························································23
표목차
Table 1. Chemical composition of zirconia(wt%) ········4
Table 2. Conditions of the experiment groups ··············5
Table 3. Roughness values experimental groups(Unit:㎛) ···································································································11
Table 4. Effect of shear bond strength according to SLT or ST ····························································································12
Table 5. Effect of compressive shear bond strength according to NT or SLT······················································12
그림목차
Figure 1. Flow chart of experiment procedure ·················3
Figure 2. Zirconia Furnace(DEKEMA, GmbH, Germany) ········································································································5
Figure 3. The configuration of porcelain build-up for firing ········································································································6
Figure 4. Specimens for push shear bond strength test ········································································································6
Figure 5. Mesurement of surface roughness(SJ-400, Mitutoyo, Japan) ·······································································7
Figure 6. Photograph of push shear bonding test of zirconia core/ porcelain ··········································································8
Figure 7. Scanning Electron Microscopes(SEM) used in this study ·····················································································9
Figure 8. Photographs of specimen before push shear bonding test(NT, L, S, SL, ×100) ·········································14
Figure 9. SEM micrograph of specimen after push shear strength test(NT, L, S, SL, ×100) ·········································15
Figure 10. SEM micrograph of specimen after push shear strength test(NT, L, S, SL, ×500) ··········································16
Figure 11. Photographs of specimen after push shear bonding test(NT, L, S, SL, ×45) ············································17
Figure 12. SEM/EDS analysis of the interface between zirconia core-veneering porcelain after push shear bond strength test(NT, L, S, SL) ·····················································18

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