What is nasolabial angle?

The nasolabial angle is defined as the angle between the line drawn through the midpoint of the nostril aperture and a line drawn perpendicular to the Frankfurt horizontal while intersecting subnasale. An arbitrary range of 90 to 120 degrees for the nasolabial angle is usually stated in the literature.

How do you find the nasolabial angle?

Four common ways of measuring the nasolabial angle found in rhinoplasty literature1 that were used in our survey: A, angle between columella and line intersecting subnasale and labrale superius1; B, angle between columella and line tangent to cutaneous upper lip proper2; C, angle between long axis of nostril and line …

What is the ideal nasolabial angle?

Background: In aesthetic rhinoplasty, the described ideal nasolabial angle ranges from 90 to 120 degrees, with variable anthropologic differences.

Who gave nasolabial angle?

A method of constructing the nasolabial angle, given by Dr. Jay P Fitzgerald, has been employed and the nasolabial angle of 45 Indian subjects has been constructed which determines the relative angulations of the nose and the upper lip, as well as their relationship with each other.

What is nasolabial angle in orthodontics?

The NLA is one of the key factors to be considered in an orthodontic diagnosis as guidance for the aesthetics of the nose and facial profile. It is defined as the angle formed by the two lines passing through the lower edge of the nose (the columella) and the edge of the upper lip (as shown in Figure 1).

What are the angles of the nose?

The angle between the vertical facial plane and the line connecting the anterior and posterior ends of the nostril is the nasolabial angle. The nasolabial angle is usually 95 to 100 degrees in females, and 90 to 95 degrees in males (Fig.

How can nasolabial angles be improved?

The usual technique recommended to achieve an open nasolabial angle is to shorten the septum by caudal resection and shorten the lateral walls by cephalic trim of the lower lateral cartilages 4 Fig.

What is the nasolabial groove?

The furrow on either side of the face that runs down and laterally from the nostril and that marks the outer edge of the upper lip. Synonym: nasolabial sulcus.

How are nasal tip angles measured?

The nasolabial angle was measured by drawing a straight line through the most anterior and posterior points of the nostrils as seen on the lateral view. The angle formed by this line with a perpendicular line to the natural horizontal facial plane, or the Frankfurt line, is the nasolabial angle (Figure 1).

Why is my nose angled up?

An upturned nose can be caused by sudden nasal trauma. To change the shape of your nose, the injury has to be severe, such as a broken nose. A direct frontal blow is usually what causes a nose to push inward and upward, creating an upturned appearance.

What are nasolabial folds?

Nasolabial folds are creases in your skin extending from both sides of your nose to the corners of your mouth. They’re also called smile lines or laugh lines.