buccal corridor
The dark space visible between the buccal surfaces of the posterior teeth and the corners of the lips during a smile, assessed when evaluating the esthetic width of a prosthetic restoration.
Full Definition
The buccal corridor refers to the bilateral shadow or negative space seen between the outer edges of the visible dentition and the inner corners of the lips when a patient smiles. In dental laboratory and prosthodontic contexts, it is a key esthetic parameter that technicians consider when designing anterior and full-arch restorations. A narrow buccal corridor is often considered more esthetic, though preferences vary culturally. Laboratory prescriptions may specify buccal corridor width targets to guide waxing and tooth arrangement. Editors must not confuse this term with 'buccal shelf,' which is an anatomical landmark used in denture construction.
Usage
Usage note: Always lowercase; not hyphenated. Do not confuse with 'buccal shelf,' a denture anatomy term.
In Context
- "The technician widened the posterior tooth arrangement to reduce the buccal corridor and improve the smile line." — Laboratory case note
- "The prescription specified a minimal buccal corridor consistent with the patient's facial width." — Dental laboratory prescription