2001 Volume 21 Issue 1 Pages 113-117
The purpose of this study was 1) to investigate complete dental arch stone casts and impressions, 2) to estimate the occlusal height reproduced by stone casts, and 3) to investigate the accuracy of stone casts made from implanted metallic models.
Stone casts and impressions were measured by using a three-dimensional measuring microscope.
The results were as follows :
1. Distortion of the impression was so slight that their reproducibility was three-dimensionally superior.
2. Arch widths and lengths on the stone casts tended to increase in number.
3. In the implanted area (ITI implant), the reference points on the occlusal screw had a different tendency with relation to the amount of distortion and direction.
4. For the angled type stone casts (IAT implant), the reference points of the remaining teeth moved to a lower position.
