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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 제3권 제4호
- 발행연도
- 2011.1
- 수록면
- 196 - 203 (8page)
이용수
초록· 키워드
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PURPOSE. This study evaluated marginal fit of glass infiltrated alumina cores fabricated using two techniques and their marginal stability after firing cycles of veneering porcelain.
MATERIALS AND METHODS. Fifteen standardized all-ceramic crowns were fabricated on a metal die using each technique: slip cast technique of VITA In-Ceram sprint Alumina (Group A as control) and plastic foil matrix technique of Turkom-Cera fused alumina core system (Group B). Copings were compared between groups and within groups at coping stage and after firing each layer of veneering porcelain. A device was used to standardize seating of copings on the metal die and positioning of the specimens under the microscope after each stage of fabrication. The specimens were not cemented and marginal gap was measured using an image analyzing software (Imagepro Express) on the photographs captured under an optical microscope. Two tailed unpaired‘ t test’was used to compare marginal gaps in two groups and one way ANOVA was used to analyze marginal distortion within each group at 95% confidence interval.
RESULTS. The marginal gap was smaller at the coping stage in group B (60 + 30 μm) than group A (81 + 21 μm) with statistical significance. After firing of veneering porcelain the difference was insignificant. At the final stage, both groups exhibited lower mean marginal gaps than at the initial coping stage with the difference of 11.75 μm for group A and 11.94 μm for group B, but it was statistically insignificant due to high value of standard deviation.
CONCLUSION. Within the limitations of this study, it was concluded that both techniques produced copings with comparable and acceptable marginal fit and marginal stability on firing veneering porcelain.
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참고문헌 (28)
참고문헌 신청
[학술지(
Alkumru H / 1988 / Factors affecting the fit of porcelain jacket crowns / Br Dent J 164 : 39 ~ 43
Att W / 2009 / Marginal adaptation of three different zirconium dioxide three-unit fixed dental prostheses / J Prosthet Dent 101 : 239 ~ 247
Buchanan WT / 1981 / The effect of repeated firings and strength on marginal distortion in two ceramometal systems / J Prosthet Dent 45 : 502 ~ 506
Christensen GJ / 1966 / Marginal fit of gold inlay castings / J Prosthet Dent 16 : 297 ~ 305
Alkumru H / 1988 / Factors affecting the fit of porcelain jacket crowns / Br Dent J 164 : 39 ~ 43
Att W / 2009 / Marginal adaptation of three different zirconium dioxide three-unit fixed dental prostheses / J Prosthet Dent 101 : 239 ~ 247
Buchanan WT / 1981 / The effect of repeated firings and strength on marginal distortion in two ceramometal systems / J Prosthet Dent 45 : 502 ~ 506
Christensen GJ / 1966 / Marginal fit of gold inlay castings / J Prosthet Dent 16 : 297 ~ 305
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