Resistência ao desgaste de dentes artificiais impressos 3D e fresados CAD/CAM versus pré-fabricados para base de dentaduras: Uma revisão sistemática e meta-análise.

Abstract

Silva NC. Wear resistance of 3D printed and CAD/CAM milled artificial teeth versus prefabricated teeth for denture bases: A systematic review and meta-analysis. Campo Grande 2025. [Undergraduate Thesis – Federal University of Mato Grosso do Sul]. Objective. To evaluate the wear resistance of 3D printed and CAD/CAM milled artificial teeth compared to prefabricated teeth for denture bases. Materials and Methods. This systematic review and meta-analysis was performed in accordance with PRISMA recommendations. A PICO question was formulated: “Do 3Dprinted and CAD/CAM-milled artificial denture teeth exhibit greater wear resistance than prefabricated teeth?” The PubMed/MEDLINE, Embase, Web of Science, Cochrane Library, and ProQuest databases were used, without restriction of language or publication date. The Joanna Briggs Institute (JBI) critical appraisal was used to assess the risk of bias in the studies. A meta-analysis based on the inverse variance (IV) method was performed, considering continuous outcomes, assessed by mean difference (MD) and with a 95% confidence interval (CI) (α=0.05). Results. The electronic search in the databases resulted in a total of 1,138 studies. A total of 8 in vitro studies were included, published from 2020 to 2025, evaluating a total of 450 denture tooth samples. The meta-analysis of volumetric wear resistance showed no significant difference. between conventional prefabricated teeth and CAD/CAM (P = 0.57; MD: 0.31; 95% CI: -0.76 to 1.38; I2 = 89%, P < 0.001). The meta-analysis of linear wear resistance showed no significant difference between conventional prefabricated teeth and CAD/CAM (P = 0.06; MD: 1.02; 95% CI: -0.06 to 2.10; I2 = 92%, P < 0.001). Conclusion. It is concluded that the wear resistance of 3D printed and CAD/CAM milled teeth is similar to that of prefabricated denture teeth; however, 3D printed teeth tend to have lower resistance. Keywords: Dentures, Tooth wear, Computer-Aided Design.