Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2010 Sep;2(3):111-5.
doi: 10.4047/jap.2010.2.3.111. Epub 2010 Sep 30.

A study on the in-vitro wear of the natural tooth structure by opposing zirconia or dental porcelain

Yu-Seok Jung  1 , Jae-Whang Lee, Yeon-Jo Choi, Jin-Soo Ahn, Sang-Wan Shin, Jung-Bo Huh
Affiliations

A study on the in-vitro wear of the natural tooth structure by opposing zirconia or dental porcelain

Yu-Seok Jung et al. J Adv Prosthodont. 2010 Sep.

Abstract

Purpose: This study was conducted to evaluate clinical validity of a zirconia full-coverage crown by comparing zirconia's wear capacity over antagonistic teeth with that of feldspathic dental porcelain.

Materials and methods: THE SUBJECT GROUPS WERE DIVIDED INTO THREE GROUPS: the polished feldspathic dental porcelain group (Group 1), the polished zirconia group (Group 2), and the polished zirconia with glazing group (Group 3). Twenty specimens were prepared from each group. Each procedure such as plasticity, condensation, and glazing was conducted according to the manufacturer's manual. A wear test was conducted with 240,000 chewing cycles using a dual-axis chewing simulator. The degree of wear of the antagonistic teeth was calculated by measuring the volume loss using a three-dimensional profiling system and ANSUR 3D software. The statistical significance of the measured degree of wear was tested with a significant level of 5% using one-way ANOVA and the Tukey test.

Results: The degrees of wear of the antagonistic teeth were 0.119 ± 0.059 mm(3) in Group 1, 0.078 ± 0.063 mm(3) in Group 3, and 0.031 ± 0.033 mm(3) in Group 2. Statistical significance was found between Group 1 and Groups 2 and between Group 2 and 3, whereas no statistical significance was found between Group 1 and Group 3.

Conclusion: Despite the limitations of this study on the evaluation of antagonistic teeth wear, the degree of antagonistic tooth wear was less in zirconia than feldspathic dental porcelain, representing that the zirconia may be more beneficial in terms of antagonistic tooth wear.

Keywords: Ceramic; Tooth; Wear; Zirconia.

PubMed Disclaimer

Figures

Fig. 1
Fig. 1
Specimen chamber.
Fig. 2
Fig. 2
Human premolar cusps embedded in acrylic resin (self-cure) in the lower sample holder.
Fig. 3
Fig. 3
Antagonistic samples embedded in acrylic resin, which was fixed into the upper sample holders.
Fig. 4
Fig. 4
Box plots of the volume loss (mm3) after 240,000 loading cycles.
See this image and copyright information in PMC

References

    1. Ardlin BI. Transformation-toughened zirconia for dental inlays, crowns and bridges: chemical stability and effect of low-temperature aging on flexural strength and surface structure. Dent Mater. 2002;18:590–595. - PubMed
    1. Sobrinho LC, Cattell MJ, Glover RH, Knowles JC. Investigation of the dry and wet fatigue properties of three all-ceramic crown systems. Int J Prosthodont. 1998;11:255–262. - PubMed
    1. Campbell SD, Sozio RB. Evaluation of the fit and strength of an all-ceramic fixed partial denture. J Prosthet Dent. 1988;59:301–306. - PubMed
    1. Nakamura T, Ohyama T, Imanishi A, Nakamura T, Ishigaki S. Fracture resistance of pressable glass-ceramic fixed partial dentures. J Oral Rehabil. 2002;29:951–955. - PubMed
    1. Komine F, Tomic M, Gerds T, Strub JR. Influence of different adhesive resin cements on the fracture strength of aluminum oxide ceramic posterior crowns. J Prosthet Dent. 2004;92:359–364. - PubMed