Earticle

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

저자

• 최병환 [ Byung-Hwan Choi | 대구보건대학교 치기공과 ] 교신저자
• 김임선 [ Im-Sun Kim | 대구보건대학교 치기공과 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  대한치과기공학회지 [THE JOURNAL OF KOREAN ACADEMY OF DENTAL TECHNOLOGY]

• 간기

  계간

• pISSN

  1229-3954

• eISSN

  2288-5218

• 수록기간

  1979~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 515 DDC 617