JMIR Publications

ABSTRACT

Background:

BACKGROUND: Sella turcica, a stable anatomical landmark, and the reliability of certain cranial landmarks, particularly the nasion, remain questionable due to growth-related variability. This shift in reference points reduces potential diagnostic variability and strengthens the analytical reliability of skeletal, dental, and soft-tissue assessments.

Objective:

To evaluate a new cephalometric method, the Sawangi Orthodontic Analysis (SOA), which excludes the unreliable nasion point (N) and utilises Sella Turcica (S) -based parameters for assessing skeletal, dental, and soft tissue relationships in Angle's class I, class II, and class III malocclusion.

Methods:

A cross-sectional study was conducted using 160 lateral cephalograms collected from patients aged 7–40 years. Participants were divided into two age GRPs: GRP A, with 80 patients aged between 7 and 15 and GRP B, with 80 patients aged between 15 and 40, each with equal representation of males and females. Fourteen parameters covering skeletal, dental, and soft tissue dimensions were assessed, excluding the nasion point as it was unreliable

Results:

A Total of 160 lateral cephalograms were collected from patients aged 7–40 years has efficiently determined the maxillary length, mandibular length and position, skeletal parameters, mandibular plane angle, and upper lip position without involving and relying on nasion. Adult males consistently demonstrated higher values. On assessing Growth pattern and incisor inclination, Vertical and soft tissue parameters were not significant. Sexual dimorphism and GRP-related skeletal differences are prominent, especially in mandibular and maxillofacial dimensions. The data were collected between January and August 2025 from 160 participants. Data and statistical analysis were completed in October 2025.

Conclusions:

This analysis emerges as a clinically valuable and methodologically sound new cephalometric analysis, offering orthodontists a more refined, objective, and reliable diagnostic insight and may provide beneficial assistance in orthodontic assessment and therapeutic planning by eliminating the unreliable nasion point, especially useful in cases of trauma or syndromic patients and patients with nasal deviation. Further studies with increased sample sizes and diverse populations are recommended to validate these findings and to establish the broader clinical applicability of this method. Clinical Trial: CTRI/2025/10/096572.