Influence of Build Angle on the Accuracy of Removable Partial Denture Frameworks Fabricated by Additive Manufacturing

As the prevalence of partial tooth loss in elderly patients increases, accurate RPD frameworks becomes crucial for comfort and oral health. This study compared the dimensional accuracy of RPD frameworks fabricated at various build angles (0°, 15°, 30°, 45°, and 60°) using Additive Manufacturing (AM) technology. The samples were made from CoCr28Mo6 alloy powder.<br/>The accuracy of each framework was evaluated using root mean square (RMS) values and color deviation maps. The results showed that as the build angle increased, the accuracy decreased, especially in critical areas like clasps. One-way ANOVA analysis revealed statistically significant differences between groups (p < 0.001), with Tukey’s post-hoc tests indicating substantial discrepancies between build angles greater than 15°. These findings demonstrate that the build angle in AM significantly affects the precision of RPD frameworks, highlighting the need for optimized angle selection in clinical applications.