Relating to the line (dihedral) angle formed by the junction of the distal and incisal walls of a class V cavity in an anterior tooth. ... (05 Mar 2000) ... 
Type: Term Pronunciation: dis′tō-in-sī′zăl Definitions: 1. Relating to the line (dihedral) angle formed by the junction of the distal and incisal walls of a class V cavity in an anterior tooth.