It was determined that all measurements showed good reliability in both methods except for the nasolabial angle
in the manual method.
It is important to maintain and/or establish the stabilization between the medial crus and caudal septum to prevent a ptotic, underprojected nasal tip, acute nasolabial angle
, and/or retracted columella.
A sampling by convenience was used that included 30 candidates for orthognathic or facial surgery, taking linear morphometry of the width of the nasal base and the nasolabial angle
both in static and dynamic (smile) position.
The Middle Eastern nose is known to be comprised of over projecting osseo-cartilaginous vault that is covered by thick skin, numerous pilosebaceous units at the tip, dorsal hump, over projected radix, wide upper two-thirds, nasal deviation, long upper lateral cartilages, asymmetric alar cartilages, short medial crura, tip asymmetry, and acute nasolabial angle
. (5,6) Henceforth, our results were in line with the characteristics of the Middle Eastern nose in terms of skin thickness in the literature.
(NLA) is a key indicator of facial esthetics and plays an important role in extraction decision in clinical orthodontics.
The researchers found that the mean preoperative nasolabial angle
was 92.7 degrees.
The stereotypical female nose has increased concavity at the dorsum and a wider nasofrontal angle with a slightly upturned nasal tip resulting in a more obtuse nasolabial angle
. Thus, these areas are targeted to increase the nasolabial and nasofrontal angle.
(4) Nasolabial angle
(C-Sn-Ls): it is the angle between the points columella, subnasale, and labiale superius.
Studies assessing three-dimensional photogrammetric images pre and post-operatively (7, 14, 15) show maxillary advancement leads to significant increases in alar base, interalar and nostril widths, nasolabial angle
(15), soft triangle, nasal tip, columella and upper lip projection (7, 14).
Then it is gently moved forward from the tip to the columella and nasolabial angle
. After the cannula reaches the nasolabial angle
, the filler is injected to point P and point R in the supracartilaginous layer using a retrograde linear threading technique.
The lateral norm analyzes individuals regarding their nasolabial angle
, which suggests the relation between the maxilla and mandible.
The angles to be analyzed were: the nasolabial angle
, formed by the nose columnela and the nasolabial projection; the interincisal angle conformed by the upper and lower incisors; the mentolabial groove depth, that gave the length of depth between the lower lip and the chin; and the mandibular plane angle, which divide the sample, due to its degree of divergence with Frankfort's plane, into brachycephalic ([greater than or equal to] 25[degrees]), mesocephalic ([greater than or equal to] 30[degrees]) and dolichocephalic ([greater than or equal to] 35[degrees]) (Fig.