Table 1 Definition of three assistant soft tissue landmarks.

From: A novel three-dimensional smile analysis based on dynamic evaluation of facial curve contour

Landmark

Abbreviation

Definition

Cheekbone point

CP

Point at the apex of osseous cheekbone located 20–25 mm inferior and 5–10 mm anterior to the outer canthus of the eye in sagittal view and is 20–25 mm inferior and 5–10 mm lateral to the outer canthus of the eye in frontal view.

Maxilla point

MxP

Most anterior point on the continuum of the cheekbone-nasal-lip contour and directly posterior to the alar base described by Arnett and Bergman10,11. It is an indicator of maxillary anteroposterior position.

Mandible point

MdP

Point located at the junction among the lateral subunit of cheek unit, central subunit of lower lip unit and mental unit, according to the classification of facial aesthetic units. It is normally directed at the end of mentolabial sulcus and nasolabial fold. Therefore it was so named by the author.