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Purpose: This study evaluated the accuracy of artificial teeth in three-dimensional (3D)- printed complete dentures according to connector thickness. Methods: Maxillary and mandibular edentulous models were fabricated and scanned. Complete dentures were designed using computer-aided design software, with connector thickness automatically set at three levels: 60% (Group 1), 80% (Group 2), and 100% (Group 3). The artificial teeth were fabricated using a digital light processing 3D printer, followed by post-processing. Each specimen was rescanned, and the obtained data were superimposed onto the reference data using Geomagic software. Trueness was assessed, and statistical analysis was performed using one-way analysis of variance (ANOVA) followed by Tukey’s honestly significant difference post-hoc test (α=0.05). Results: The mean deviations were 106.3±5.1 μm in Group 1, 101.4±5.9 μm in Group 2, and 95.4±6.7 μm in Group 3. One-way ANOVA revealed significant differences among the groups (p<0.001). Tukey’s test showed that Group 1 differed significantly from Groups 2 and 3, whereas no significant difference was observed between Groups 2 and 3. Conclusion: Connector thickness significantly affected the accuracy of 3D-printed complete dentures. Thinner connectors (60%) showed greater deviations, likely due to polymerization shrinkage, whereas thicker connectors (80% and 100%) demonstrated improved stability and accuracy. Clinically, securing at least 80% connector thickness is recommended for optimal denture fabrication.