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KMID : 1023420150150010054
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Journal of Dental Hygiene Science
2015 Volume.15 No. 1 p.54 ~ p.59
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Marginal Adaptation of Zirconium Dioxide Core according to the Abutment Teeth
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Kim Ki-Baek
Kim Seok-Hwan
Kim Jae-Hong
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Abstract
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The present study investigated the influences of various abutment teeth shapes (maxillary right canine, pre-molar, molar) on the marginal adaptation of computer aided design/computer aided manufacturing-fabricated zirconia core. In vitro adaptation of zirconia cores manufactured by three different abutments were evaluated. Thirty zirconia cores were made per each models and the adaptation was evaluated through a silicone replica technique. The measurement of the adaptation was carried out using digital microscope. The mean and standard deviation of each reference point were analyzed using the one-way (ANOVA) and Tukey’s honestly significant difference tests (α=0.05). The overall marginal fits of the zirconia cores were as follows: canine: 47.59 μm, pre-molar: 43.74 μm, molar: 40.36 μm. They were no statistically significant differences between groups for adaptation (p＞0.05). This confirmed that the type of abutment teeth used does not determine the precision of fit of zirconia core.
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KEYWORD
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Abutment teeth , Computer aided design/computer aided manufacturing , Dental marginal adaptation , Zirconium dioxide core
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