Influence of various gypsum materials on precision of fit of CAD/CAM-fabricated zirconia copings

Dental Materials Journal
Jae-Hong KimJi-Hwan Kim

Abstract

The clinical applicability of CAD/CAM-fabricated zirconia copings is tested using working models made from four different highstrength Type IV gypsum materials. Each of the four materials was used to fabricate 15 zirconia copings. Precision of fit was measured with a digital electron microscope using the silicone replica technique. The mean and standard deviation of each reference point were analyzed using the one-way analysis of the variance (ANOVA) and Tukey's honest significant difference (HSD) tests (α=0.05). The overall marginal and internal fits of the zirconia copings were as follows: GS (GS: Grey Stone) group: 91.43 μm, LS (LS: Light green Stone) Group: 87.89 μm, RS (RS: Red Stone) Group: 88.75 μm, BS (BS: Beige Stone) Group: 82.78 μm. There were no significant differences between the mean adaptations of the gypsum varieties (p>0.05). This confirmed that the type of gypsum material used does not determine the precision of fit of a prosthesis.

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Citations

May 19, 2018·Biomedizinische Technik. Biomedical Engineering·Syed Rashid Habib
Nov 20, 2018·The Journal of Oral Implantology·Lauren BohnerPedro Tortamano Neto
Mar 6, 2018·The Journal of Advanced Prosthodontics·Fa-Bing TanJin-Lin Song
Apr 4, 2017·Dental Materials Journal·Rocio OrtegaMaria J Suarez

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