Classification of clinical attributes in tooth appearance.

In this article, the author proposes objective definitions in one area of tooth appearance that has historically been subjective and relative, without standardized descriptions. This concept has evolved from the need for a classification system that would enable defined, reliable, and repeatable communication between the dentist and ceramist. Following detailed observations of natural teeth, categories of appearance attributes have been developed with classifications assigned in each category. These definitions are comprehensive and provide a utilitarian description of all essential features that comprise tooth appearance other than shade. Subjective vagaries in the communication process between dentist and ceramist can be eliminated while the time, effort, and cost associated with delivering high-quality aesthetic restorations can be reduced.