buccal corridor width

buccal corridor width (buk´əl kor´idər),

n the negative space between the buccal surface of the maxillary first premolar and the inner point at which the lips join when the patient smiles. It is often stated as a ratio of the inner lip commissure width divided by the distance between the first maxillary premolars.
buccal flange,
buccal lymph nodes,
buccal mucosa,
buccal notch,
buccal shelf,
buccal splint,
buccal surface,
buccal tube,
buccal vestibule,