Effects of erosion and abrasion on resin-matrix ceramic CAD/CAM materials: An in vitro investigation

Eur J Oral Sci. 2024 Apr;132(2):e12967. doi: 10.1111/eos.12967. Epub 2023 Dec 17.


The aim of the study was to evaluate the effects of erosion and abrasion on resin-matrix ceramic CAD/CAM materials [CERASMART (GC); VITA ENAMIC (VITA Zahnfabrik); Lava Ultimate (3 M)] in comparison to feldspar ceramic (VITABLOCS Mark II, VITA Zahnfabrik) and resin composite materials (ceram.x universal, Dentsply Sirona). Daily brushing and acid exposure were simulated using a brushing apparatus and a solution of 0.5 vol% citric acid. Microhardness, surface roughness, and substance loss were measured at baseline and after simulation of 1 and 3 years of function. All materials showed a decrease in microhardness after 3 years and an increase in surface roughness (Ra) after 1 and 3 years. The Ra increase was statistically significantly lower for the resin-matrix ceramics than for feldspar ceramic and similar to composite material. After 3 years, only feldspar ceramic showed no significant substance loss. In conclusion, resin-matrix ceramics demonstrate reduced roughening compared to feldspar ceramics, potentially improving restoration longevity by preventing plaque buildup, but differences in abrasion resistance suggest the need for further material-specific research. Future research should aim to replicate clinical conditions closely and to transition to in vivo trials.

Keywords: CAD/CAM materials; microhardness; substance loss; surface roughness; wear.

MeSH terms

  • Aluminum Silicates
  • Ceramics*
  • Composite Resins
  • Computer-Aided Design
  • Dental Materials
  • Dental Porcelain*
  • Materials Testing
  • Potassium Compounds*
  • Surface Properties


  • feldspar
  • Dental Porcelain
  • Composite Resins
  • Aluminum Silicates
  • Dental Materials
  • Potassium Compounds