Journal article

Publication year: 2022

Pages: 273-283

Journal: International Journal of Paediatric Dentistry

Volume number: 32

Issue number: 2

ISSN: 0960-7439

eISSN: 1365-263X

Open access status: Hybrid

DOI Link: https://doi.org/10.1111/ipd.12852

Publisher: Wiley

Abstract: 
Background Due to limited aesthetics of stainless-steel crowns, the demand for tooth-coloured crowns has recently risen. Up to now, few studies have investigated the marginal integrity and wear behaviour of tooth-coloured primary molar crowns under subcritical load in vitro. Aim This in vitro study evaluated the marginal quality and wear of newly introduced resin composite and hybrid ceramic crowns compared with metal and zirconia crowns. Design Metal, resin composite, hybrid ceramic (CAD/CAM), and various zirconia crowns were investigated. After thermomechanical loading (2,500 thermocycles/100,000 x 50N), marginal quality of luting gaps and wear of crowns/antagonists were evaluated using replicas under a light or 3D laser scanning microscope. Results were analysed with the Mann-Whitney U test or one-way ANOVA (p < .05). Results Marginal quality of the new resin composite and hybrid ceramic crowns performed well in comparison with SSC and zirconia crowns. Adhesive bonding of crowns resulted in superior marginal seal compared with conventional GIC (Mann-Whitney U test, p < .05). Regarding wear, zirconia crowns exhibited significantly worse results than resin composite or hybrid ceramic crowns and SSCs (ANOVA, p < 0.05). Conclusion The new resin composite and hybrid ceramic crown exhibited a good performance in comparison with SSCs and zirconia crowns considering both wear and marginal quality after subcritical loading.

Harvard Citation style: Moehn, M., Frankenberger, R. and Kraemer, N. (2022) Wear and marginal quality of aesthetic crowns for primary molars, International Journal of Paediatric Dentistry, 32(2), pp. 273-283. https://doi.org/10.1111/ipd.12852

APA Citation style: Moehn, M., Frankenberger, R., & Kraemer, N. (2022). Wear and marginal quality of aesthetic crowns for primary molars. International Journal of Paediatric Dentistry. 32(2), 273-283. https://doi.org/10.1111/ipd.12852