Edge-to-edge relationship is described as which description?

• A. It describes cusp-to-fossa relationships
• B. It describes incisal edges meeting
• C. It relates to canine guidance
• D. It describes posterior tooth contact only

Answer: (B)

Edge-to-edge describes incisal edges meeting. In this situation the biting surfaces involved are the incisal edges of the upper and lower front teeth, so the two anterior edges come into contact in centric occlusion. This differs from cusp-to-fossa, which involves posterior teeth; from canine guidance, where canines guide jaw movements; and from a condition limited to posterior tooth contact.