[A PhD completed 6. Tooth Wear Evaluation System: development and applications].

Numerous ranking systems exist for the quantification of tooth wear, each unfortunately with its own particular shortcomings. In this dissertation a new and very comprehensive tooth wear evaluation system is described. In it, the existing terminology is adapted to distinguish among mechanical-intrinsic (formerly attrition), mechanical-extrinsic (formerly abrasion), chemical-intrinsic (formerly erosion) and chemical-extrinsic (formerly erosion). In order to indicate the degree of wear, the terms mild, moderate, serious and severe are used. On the basis of previous systems, the terms, 3 degree-of-wear systems were developed and tested for reliability for use in the dentist's clinic, on dental models and oral imaging. The ranking scales were shown to be reliably applicable intra-orally, on the dental models and on the oral images, particularly on occlusal/incisal surfaces. The findings of this research have resulted in the formation of a modular Tooth Wear Evaluation System in order to quantify, qualify, monitor and establish the sources of tooth wear. The evaluation system can also be used to determine treatment options.