Effect of build angle and print layer thickness on clinical accuracy of 3D-Printed orthodontic models
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Abstract
This study investigated how variations in print layer thickness and build angle impact the accuracy of orthodontic models produced using a digital light processing (DLP) 3D printer. Orthodontic models were generated from a digital master model derived from an ideal maxillary typodont scan. The study tested six different configurations: 100 µm-0°, 100 µm-70°, 100 µm-90°, 170 µm-0°, 170 µm-70°, and 170 µm-90°. Following printing, the experimental models underwent scanning, and the scan data were analyzed against the digital master model using 3D superimposition software. A ±0.25 mm range was established as clinically acceptable deviation between the digital master and experimental models. The findings indicate that both build angle and print layer thickness influence the final accuracy of the printed models. In this study, models printed with a 170 µm layer thickness demonstrated slightly greater accuracy across all build angles compared to those printed with 100 µm thickness. These results suggest that choosing the appropriate print layer thickness can offer flexibility in achieving accurate clinical outcomes.
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Introduction -- Materials and methods -- Results -- Discussion -- Conclusion
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M.S. (Master of Science)