The commissure is the corner of the mouth, where the vermillion border of the superior labium (upper lip) meets that of the inferior labium (lower lip).
Labial commissure of mouth | |
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Details | |
Identifiers | |
Latin | commissura labiorum oris |
TA98 | A05.1.01.012 |
TA2 | 224 |
FMA | 77268 |
Anatomical terminology [edit on Wikidata] |
The commissure is important in facial appearance, particularly during some functions, including smiling. As such it is of interest to dental surgeons.
Diseases that involve the commissure include angular chelitis.