Journal of Prosthodontics News
Surface Hardness and Wear Resistance of Prefabricated and CAD/CAM Milled Artificial Teeth
Now online in the Journal of Prosthodontics, a clinical study evaluating the surface roughness and wear resistance of prefabricated and CAD/CAM milled acrylic resin teeth for complete dentures.
For this study, 10 completely edentulous patients aged 55–65 were randomly included and given two complete dentures. The first complete denture was made using prefabricated teeth, while the second was constructed using CAD/CAM milled teeth. The complete dentures were then scanned following insertion (T0), at 3 months (T3), and at 6 months (T6). Utilizing 3D surface super-imposition techniques, the vertical (2D wear), and volumetric (3D wear) material loss were measured. The hardness of the teeth was evaluated at the time of denture insertion (T0) and then after 6 months (T6) of denture insertion with a digital Vickers hardness tester.
The time of denture function was linearly correlated with the wear of the prefabricated and CAD/CAM milled denture teeth. Prefabricated acrylic teeth had significantly more vertical and volumetric wear after 3 and 6 months, compared to CAD/CAM milled denture teeth. CAD/CAM milled teeth also displayed significantly higher hardness values than prefabricated teeth both before and after 6 months of use.
In terms of wear resistance and surface hardness, the results showed that CAD/CAM milled acrylic resin teeth were superior to prefabricated acrylic resin artificial teeth once the complete denture functions.
Ali SA, Abozaed HW, Jazar HA, Mostafa AZH. Surface hardness and wear resistance of prefabricated and CAD/CAM milled artificial teeth: A cross-over clinical study. J Prosthodont. 2024; 1–11. https://doi.org/10.1111/jopr.13890
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