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

Jae Hong Kim, Ki Baek Kim, Woong Chul Kim, Hyun Sill Rhee, Il Hyun Lee, Ji Hwan Kim

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    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.

    Original languageEnglish
    Pages (from-to)19-24
    Number of pages6
    JournalDental Materials Journal
    Volume34
    Issue number1
    DOIs
    Publication statusPublished - 2015

    Bibliographical note

    Publisher Copyright:
    © 2015, Japanese Society for Dental Materials and Devices. All rights reserved.

    Keywords

    • Dental CAD/CAM
    • Fit
    • Type IV gypsum
    • Zirconia coping

    ASJC Scopus subject areas

    • Ceramics and Composites
    • General Dentistry

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