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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제5권 제4호
- 발행연도
- 2013.1
- 수록면
- 485 - 493 (9page)
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PURPOSE. To evaluate the effects of surface treatments on shear bond strength (SBS) between microwave and conventionally sintered zirconia core/veneers. MATERIALS AND METHODS. 96 disc shaped Noritake Alliance zirconia specimens were fabricated using YenaDent CAM unit and were divided in 2 groups with respect to microwave or conventional methods (n=48/group). Surface roughness (Ra) evaluation was made with a profilometer on randomly selected microwave (n=10) and conventionally sintered (n=10) cores. Specimens were then assessed into 4 subgroups according to surface treatments applied (n=12/group). Groups for microwave (M) and conventionally (C) sintered core specimens were as follows; MC,CC: untreated (control group), M1,C1:Al2O3 sandblasting, M2,C2:liner, M3,C3:Al2O3 sandblasting followed by liner. Veneer ceramic was fired on zirconia cores and specimens were thermocycled (6000 cycles between 5°-55℃). All specimens were subjected to SBS test using a universal testing machine at 0.5 mm/min, failure were evaluated under an optical microscope. Data were statistically analyzed using Shapiro Wilk, Levene, Post-hoc Tukey HSD and Student’ t tests, Two-Way-Variance- Analysis and One-Way-Variance-Analysis (α=.05). RESULTS. Conventionally sintered specimens (1.06 ± 0.32 µm) showed rougher surfaces compared to microwave sintered ones (0.76 ± 0.32 µm)(P=.046), however, no correlation was found between SBS and surface roughness (r=-0.109, P=.658). The statistical comparison of the shear bond strengths of C3 and C1 group (P=.015); CC and MC group (P=.004) and C3 and M3 group presented statistically higher (P=.005) values. While adhesive failure was not seen in any of the groups, cohesive and combined patterns were seen in all groups. CONCLUSION. Based on the results of this in-vitro study, Al2O3- sandblasting followed by liner application on conventionally sintered zirconia cores may be preferred to enhance bond strength.
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참고문헌 (35)
참고문헌 신청
Creugers NH / 1994 / van ‹t Hof MA. A meta-analysis of durability data on conventional fixed bridges / Community Dent Oral Epidemiol 22:448~452
Aboushelib MN / 2006 / Microtensile bond strength of different components of core veneered all-ceramic restorations. Part II: Zirconia veneering ceramics / Dent Mater 22:857~863
Aboushelib MN / 2005 / Microtensile bond strength of different components of core veneered all-ceramic restorations / Dent Mater 21:984~991
Guazzato M / 2005 / Influence of surface and heat treatments on the flexural strength of a glass-infiltrated alumina/zirconia-reinforced dental ceramic / Dent Mater 21:454~463
Çelebi N / 2008 / Effect of polymerization methods on the residual monomer level of acrylic resin denture base polymers / Polym Adv Technol 19:201~206
Aboushelib MN / 2006 / Microtensile bond strength of different components of core veneered all-ceramic restorations. Part II: Zirconia veneering ceramics / Dent Mater 22:857~863
Aboushelib MN / 2005 / Microtensile bond strength of different components of core veneered all-ceramic restorations / Dent Mater 21:984~991
Guazzato M / 2005 / Influence of surface and heat treatments on the flexural strength of a glass-infiltrated alumina/zirconia-reinforced dental ceramic / Dent Mater 21:454~463
Çelebi N / 2008 / Effect of polymerization methods on the residual monomer level of acrylic resin denture base polymers / Polym Adv Technol 19:201~206
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