Effect of using teeth positioning guides on the accuracy of CAD/CAM complete dentures: an in-vitro study

Abstract

This study was conducted to evaluate the accuracy of teeth positions when positioned manually, and with a teeth positioning guide. An educational maxillary edentulous model made of dental stone were used for this study. Upon each model two complete dentures were fabricated. Thus, two groups were defined according to the method of positioning of the teeth. Group I: Six printed upper complete dentures were fabricated, and the teeth were manually positioned in the recesses of the denture bases. Group II: Six printed upper complete dentures were fabricated, and the teeth were positioned in the recesses of the denture bases using a teeth positioning guide. The accuracy of teeth positions in both groups were evaluated and compared using the Geomagic control x software. Data was collected and statistically analyzed. The results of accuracy of the teeth it was found that the least deviation was found in group I. There was a statistically significant difference between the two groups.