title: Evaluating dimensional accuracy of stone models.
abstract: An optical feeler measuring technique was introduced for evaluating the dimensional accuracy of indirect stone models. It presents the following advantages being able to measure the diameter of specimens in detail at various heights, indicating good reproducibility of the data; and hardly injuring the surface of the stone casts.
mesh_terms: D002133:Calcium Sulfate; D003734:Dental Casting Investment; D003760:Dental Impression Materials; D005069:Evaluation Studies as Topic; D008853:Microscopy / Q000295:instrumentation; D003765:Models, Dental; D055095:Optics and Photonics / Q000295:instrumentation; D011108:Polymers; D012408:Rubber; D013440:Sulfides; D013499:Surface Properties; D013696:Temperature
chemical_list: D003734:Dental Casting Investment; D003760:Dental Impression Materials; D011108:Polymers; D013440:Sulfides; D012408:Rubber; D002133:Calcium Sulfate