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도재 전용액이 지르코니아 코어-도재 비니어의 전단결합강도에 미치는 영향

원문정보

Effect of modeling liquid on the shear-bond strength of zirconia core - porcelain veneer

최병환, 김임선

피인용수 : 0(자료제공 : 네이버학술정보)

초록

영어

Purpose: This study is to evaluate the effect of modeling liquid on the shear-bond strength between zirconia core and veneering ceramic. Methods: Disk-shaped (diameter: 12.0㎜ ; height: 3.0㎜) zirconia were randomly divided into six groups according to the surface conditioning method and whether modeling liquid is used or not to be applied (N=60, n=10 per group): group 1 - control group with distilled water(ZD); group 2 - control group with modeling liquid(ZM); group 3 - airborne particle abrasion with 110-um Al2O3(AD)with distilled water; group 4 - airborne particle abrasion with 110- Al2O3 with modeling liquid(AM); group 5 - liner with distilled water(LD); group 6£≠liner with modeling liquid(LM). Contact angles were determined by the sessile drop method at room temperature using a contact angle measurement apparatus. The specimens were prepared using dentin veneering ceramics, veneered, 3 high and 2.8 in diameter, over the cores. The shear bond strength test was performed in a Shear bond test machine. Load was applied at a cross-head speed of 0.50㎜ /min until failure. The fractured zirconia surfaces were evaluated by using stereomicroscope ( x 30). Collected data were analyzed using SPSS(Statistical Package for Social Sciences) Win 12.0 statistics program. Results: ZD showed the highest contact angle(50.6 ± 5.4 ) and LD showed the lowest value(6.7 ± 1.3 ). Control groups and zirconia liner groups were significantly higher contact angle than liner groups(p<0.05). LD was the highest shear bond strength(43.9 ± 3.8 ) and ZD was the lowest shear bond strength(24.8 ± 4.9 ). Shear bond strengths of control groups and contact angle of liner groups were not significantly different((p>0.05). Liner groups presented adhesive failures. The others groups showed cohesive and adhesive failures. Conclusion: Modeling liquid groups showed lower contact angles and lower shear bond strength compared to those of distilled water groups.

목차

[Abstract]
 Ⅰ. 서론
 Ⅱ. 연구 방법
  1. 시편 제작
  2. 접촉각 측정
  3. 전단결합강도 측정
  4. 파절양상 관철
  5. 통계 분석
 Ⅲ. 결과
 Ⅳ. 고찰
 Ⅴ. 결론
 REFERENCES

저자정보

  • 최병환 Byung-Hwan Choi. 대구보건대학교 치기공과
  • 김임선 Im-Sun Kim. 대구보건대학교 치기공과

참고문헌

자료제공 : 네이버학술정보

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