labial sulcus

(redirected from lip sulcus)

la·bi·al sul·cus

a furrow between the developing lip and gum.

la·bi·al sul·cus

(lābē-ăl sŭlkŭs)
Furrow between developing lip and gingiva.
Synonym(s): lip sulcus.
References in periodicals archive ?
Upper lip sulcus depth (USD): The measurement between the upper lip sulcus and a perpendicular line drawn from the vermillion to the Frankfort plane;
Inferior sulcus to the H line (lower lip sulcus depth) (ISH): The measurement at the point of greatest convexity between the vermillion border of the lower lip and the H line;
The H angle, Soft tissue facial angle, Nose prominence, Upper lip sulcus depth (upper lip curl), Basic upper lip thickness, Upper lip thickness, Upper lip strain, Skeletal profile convexity, Soft tissue subnasale to H line, Lower lip to H line, Inferior sulcus to the H line (lower lip sulcus depth), and Soft tissue chin thickness measurements were analyzed using the definitions provided by Holdaway10 (Fig 1).
According to Hold away, upper lip sulcus depth has an acceptable range of 1-4 mm, with the mean of 3mm being ideal.