자가접착형 레진시멘트와 지르코니아 간의 전단결합강도 비교

다국어 초록 (Multilingual Abstract)

Purpose: The purpose of this study was to compare shear bond strength of six self- adhesive resin cements and one resin-modified glass ionomer cement (RMGIC) to zirconium oxide ceramic before and after thermocycling.
Materials and Methods: For this study, six self-adhesive resin cements (G-CEM LinkAce(G), Maxcem Elite(M), Clearfil SA Luting(C), PermaCem 2.0(P), Rely-X U200(R), Smartcem 2(S)) were used and one RMGIC (Fujicem) was used as a control. Also, zirconia (Zirtooth, HASS, Kangneung, Korea) (n=140) specimens were prepared. On top of the zirconia surface, each cement was polymerized in a cylinder shape (Ø2.5 * 3mm) with 40 seconds light curing. All cemented specimens were tested under shear loading until fracture on universal testing machine at a crosshead speed 1mm/min and the maximum load at fracture was recorded. Half of the specimens were thermal cycled (5℃ and 55℃, 5000 cycles) before the shear bonding strength was measured. The values of shear bond strength data were analyzed with independent T-test and one-way analysis of variance with post hoc analysis, Tukey HSD tests (P<.05). Fractured surfaces were examined with a field - emission scanning electron microscope (x 10,000) to access the mode of failure and analyzed by energy dispersive x-ray analysis.
Results: P group showed the highest shear bond strength before thermocycling (P<.05). However, C group have the greatest bond strength after thermocycling (P<.05). M, P, S group without thermocycling and G, M, P group with thermocycling showed adhesive failure, but G, C, R, F group without thermocycling and C, R, S, F group with thermocycling had a cohesive failure mode.
Conclusion: Within the limitation of this study, self-adhesive resin cements demonstrated higher bond strength than RMGIC without thermocycling. After thermocycling, C, P, S group showed highter shear bond strength than F group, however, G, M, R group revealed no significant differences. Also, the shear bond strength of self-adhesive resin cement has a decrease tendency after thermocycling except C group.

목차 (Table of Contents)

• 1. 서론 1
• 2. 연구 재료 및 방법 4
• 3. 연구 결과 9
• 4. 총괄 및 고찰 16
• 5. 결론 21
• 참고문헌 22
• 영문요약 28