Evaluation of the nasolabial angle in the Indian population

Abstract

Nasolabial angle has become the angle depicting the esthetics so has attained the prime importance in the treatment planning. Dr Jay P. Fitzgerland and Dr. Ram S. Nanda. In 1992 gave norms for Caucasian population. A radiographic cephalometric study was undertaken with 45 subjects of Indian origin to evaluate and compare with their result. The method of evaluation was according to the criteria given by Dr. Jay P Fitzergerald in AJODO 1992; 102:328-34. Significant decrease in nasolabial angle values was found in case of Indian population as compared to white adults.

Morphometric Analytical Study of External Nose Angulations Using Photographic Technique to Derive Reference Values for Sex and Ethnic Group Differentiation in Forensic Identification

“…Studies by Raza et al [11], Kommi et al [12], Dua et al [13], and Fitzerald [14] were all done on NLA. Most obtuse NLA (113.6 and 116.2 degrees for males and females, respectively) was reported by Fitzerald (1992).…”

“…An instrument like 'Goniometer' could have been used to measure the angles; however, the present study methodology (photography technique) is an excellent method of documentation and is fairly easy to use. Studies like Raza et al [11] and Dua et al [13], which dealt with NLA only, used cephalometric radiographs (cephalograms) for measuring the angle. In cephalometric radiographs the image is lifelike; however, it is expensive and requires unnecessary exposure of the participants.…”

Aesthetics of numerical proportions in human cosmetic surgery (Assessment of nasolabial angle in patients undergoing rhinoplasty before and after surgery)

“…There was no significant difference between men and women. Average of nasolabial angle was 96.1±9.7 (32). Since ancient times, the supporters of beauty as an objective and measurable property attempted to state ideal proportions, or beauty canons, for the human body and its part (18).…”

OCTA Criteria in Orthognathic Surgery: A Review

“…The nasolabial angle is formed by two lines, one from the nose, another from the upper lip, and both independent of each other. The angular measurement described by these two lines is a resultant of their individual inclinations [4]. The measurement of this angle alone provides inadequate information as it does not reveal which component is responsible for the variability.…”

“…Movement of the maxillary incisors in any of the three planes of space influences this area. However, consistent and reproducible methods of evaluating the nasolabial region are lacking [4].…”