Commisures
Encyclopedia
The commisure is the corner of the mouth, where the vermillion border
of the superior labium (upper lip) meets that of the inferior labium (lower lip).
The commisure is important in facial appearance, particularly during function such as smiling. As such it is of interest to dental surgeons.
Diseases that involve the commisure include angular chelitis.
Vermillion border
The vermilion border is the normally sharp demarcation between the lip and the adjacent normal skin. It represents the change in the epidermis from highly keratinized external skin to less keratinized internal skin...
of the superior labium (upper lip) meets that of the inferior labium (lower lip).
The commisure is important in facial appearance, particularly during function such as smiling. As such it is of interest to dental surgeons.
Diseases that involve the commisure include angular chelitis.