CONTRAST RATIO OF GLAZED AND POLISHED DENTAL CERAMICS AFTER ACCELERATED AGING

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PAHLEVAN AIOB; HOUSHMAND TABASSOM; MIRZAEI MANSOUREH; SAFAEIE HODA

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Journal: Journal of Dental Medicine Year:2013 | Volume:26 | Issue:1 (74) Page(s): 19-26

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Title

CONTRAST RATIO OF GLAZED AND POLISHED DENTAL CERAMICS AFTER ACCELERATED AGING

Author(s)

PAHLEVAN AIOB | HOUSHMAND TABASSOM | MIRZAEI MANSOUREH | SAFAEIE HODA | Issue Writer Certificate

Keywords

DENTAL CERAMICQ2

AGINGQ2

GLAZEQ2

POLISHQ3

Abstract

Background and Aims: The purpose of this in vitro study was to assess the effect of two different surface treatments on the contrast ratio of IPS Emax press ceramic submitted to accelerated AGING.Materials and Methods: Ten ceramic (IPS Emax press) disks (10-mm diameter and 1.5-mm thick) were fabricated according to the manufacturer’s recommendations. The samples were randomly divided into 2 groups (n=5): POLISHing and glazing. Contrast ratio ware obtained with a spectrophotometer before and after accelerated AGING. The contrast ratio (CR=Yb/Yw), defined as the ratio of illuminance (Y) of the test material when it is placed on the black background (Yb) to the illuminance of the same material when it is placed over a white background (Yw), was determined. The data were statistically analyzed by two-way analysis of variance (P<0.05).Results: All specimens of IPS Emax press ceramic showed significant increase in CR after 300-hour accelerated AGING time (P=0.005). POLISHed samples showed significantly higher opacity compared with that of the GLAZEd ones (P=0.018).Conclusion: Within the limitations of this study, it may be concluded that the GLAZEd specimens showed more stability in their translucency than the POLISHed specimens.

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APA: Copy

PAHLEVAN, AIOB, HOUSHMAND, TABASSOM, MIRZAEI, MANSOUREH, & SAFAEIE, HODA. (2013). CONTRAST RATIO OF GLAZED AND POLISHED DENTAL CERAMICS AFTER ACCELERATED AGING. JOURNAL OF DENTAL MEDICINE, 26(1 (74)), 19-26. SID. https://sid.ir/paper/25448/en

Vancouver: Copy

PAHLEVAN AIOB, HOUSHMAND TABASSOM, MIRZAEI MANSOUREH, SAFAEIE HODA. CONTRAST RATIO OF GLAZED AND POLISHED DENTAL CERAMICS AFTER ACCELERATED AGING. JOURNAL OF DENTAL MEDICINE[Internet]. 2013;26(1 (74)):19-26. Available from: https://sid.ir/paper/25448/en

IEEE: Copy

AIOB PAHLEVAN, TABASSOM HOUSHMAND, MANSOUREH MIRZAEI, and HODA SAFAEIE, “CONTRAST RATIO OF GLAZED AND POLISHED DENTAL CERAMICS AFTER ACCELERATED AGING,” JOURNAL OF DENTAL MEDICINE, vol. 26, no. 1 (74), pp. 19–26, 2013, [Online]. Available: https://sid.ir/paper/25448/en

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