Quantification of tooth wear: conventional vs new method using toolmakers microscope and a three-dimensional measuring technique.

Objectives: This study aimed to evaluate the reliability of a new CAD-CAM Laser scanning machine in detection of incisal tooth wear through a 6-month period and to compare the accuracy of using this new machine against measuring tooth wear using tool maker microscope and conventional tooth wear index.

Methods: Twenty participants (11 males and 9 females, mean age=22.7 years, SD=2.