TY - JOUR
T1 - Fit of Zirconia all-ceramic crowns with different cervical margin designs, before and after porcelain firing and glazing
AU - Miura, Shoko
AU - Inagaki, Ryoichi
AU - Kasahara, Shin
AU - Yoda, Masanobu
PY - 2014
Y1 - 2014
N2 - The purpose of this study is to investigate the fit of zirconia cores and all-ceramic crowns prepared with different cervical margin designs. The radius of curvature between the axial wall and the occlusal surface was set to 1 mm in an abutment using the cervical shoulder marginal design (S) and to 0.2 and 0.5 mm in abutments with round shoulders (0.2RS and 0.5RS, respectively). The internal gaps of the cores were 45-138 μm (S), 41-141 μm (0.2RS), and 43-133 μm (0.5RS). The internal gaps of the all-ceramic crowns were 40-115 μm (S), 45-113 μm (0.2RS), and 42-126 μm (0.5RS). There were no significant differences in one-way ANOVA for any region in any marginal design before and after firing the porcelain. The marginal gaps between the all-ceramic crowns and dies were 27±25 (S), 30±29 (0.2RS), and 24±27 μm (0.5RS), again with no significant differences in one-way ANOVA.
AB - The purpose of this study is to investigate the fit of zirconia cores and all-ceramic crowns prepared with different cervical margin designs. The radius of curvature between the axial wall and the occlusal surface was set to 1 mm in an abutment using the cervical shoulder marginal design (S) and to 0.2 and 0.5 mm in abutments with round shoulders (0.2RS and 0.5RS, respectively). The internal gaps of the cores were 45-138 μm (S), 41-141 μm (0.2RS), and 43-133 μm (0.5RS). The internal gaps of the all-ceramic crowns were 40-115 μm (S), 45-113 μm (0.2RS), and 42-126 μm (0.5RS). There were no significant differences in one-way ANOVA for any region in any marginal design before and after firing the porcelain. The marginal gaps between the all-ceramic crowns and dies were 27±25 (S), 30±29 (0.2RS), and 24±27 μm (0.5RS), again with no significant differences in one-way ANOVA.
KW - Adaptation
KW - CAD/CAM
KW - Margin design
KW - Y-TZP
KW - Zirconia all-ceramic restoration
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U2 - 10.4012/dmj.2013-284
DO - 10.4012/dmj.2013-284
M3 - Article
C2 - 24988882
AN - SCOPUS:84905276446
VL - 33
SP - 484
EP - 489
JO - Dental Materials Journal
JF - Dental Materials Journal
SN - 0287-4547
IS - 4
ER -