Seating Accuracy of Printed Artificial Teeth in Complete Prostheses at Different Print Angles

Abstract

Introduction: The purpose of this study is to compare the difference in seating accuracy of printed artificial teeth in the resin base cavities of complete prostheses at different print angles with the aim of reducing the error created. Methods: First, a scan was prepared from the cast of a patient, and then the teeth and prosthetic base were designed for a single toothless area, and a total of 60 artificial teeth and bases were printed separately at three angles of 0, 45, and 90 degrees. The correct seating of these teeth in the base cavities was evaluated by re-scanning and checking in the software (Dental cad, exocad, GMBH, version 3). Results: In the palatal region, the midpoint-to-midpoint (M.M) and vertical measurement at 45 degree angle has the most accuracy, while in the cylinder-to-cylinder (C.C) measurement, the highest accuracy was observed at a zero-degree angle (P-value < 0.001). In the buccal area, the M.M measurement showed the highest accuracy at a 90-degree angle, the C.C measurement at a zero-degree angle, and the vertical measurement at a 45-degree angle (P-value < 0.001) Conclusion: The result of this study showed that there was a significant difference with the gold standard for all printing angles in various measurements of the accuracy of tooth seating in the printed resin base.

Keywords: Complete denture, edentulous mouse, 3-dimentional, printing dentures