In-Vitro Assessment of Artificial Tooth Material Wear Behavior Using 3D Wear Analysis.

BACKGROUND

Artificial tooth wear impacts prosthesis durability and function; understanding material-antagonist interactions guides clinical choices.

AIM

This in-vitro study aimed to assess the wear behavior of isosit and nanohybrid composite resin artificial teeth when opposed to various antagonist materials using 3D volumetric wear analysis.

MATERIALS AND METHODS

Sixty specimens ( = 10 per group) were prepared from two artificial tooth materials and assigned to six antagonist combinations: isosit-isosit, isosit-nanohybrid composite, isosit-porcelain, nanohybrid composite-isosit, nanohybrid composite-nanohybrid composite, and nanohybrid composite-porcelain. Specimens were scanned before and after 600,000 chewing cycles using a structured-light 3D scanner. Volumetric wear was calculated by superimposing pre- and post-test scans. Data were analyzed using two-way ANOVA and Tukey's HSD test (α = 0.05).

RESULTS

Porcelain antagonists produced the highest wear values ( < 0.05). No significant difference was found between isosit and nanohybrid antagonists ( > 0.05). Identical material pairings showed less wear, though differences were not statistically significant.

CONCLUSIONS

Porcelain as an antagonist increased wear risk. Using identical materials bilaterally, such as isosit-isosit or nanohybrid-nanohybrid, may help reduce artificial tooth wear in removable prostheses.