Original Article

Year : 2020 | Volume : 11 | Issue : 1 | Page : 1-8

Comparative evaluation of perioral soft tissue of skeletal normal Class I and Class II Division 1 subjects: A lateral cephalometric study

Jeevan M Khatri, Nikita Babasaheb Sanap
Department of Orthodontics and Dentofacial Orthopaedics, CSMSS Dental College and Hospital, Aurangabad, Maharashtra, India

Correspondence Address:
Dr. Nikita Babasaheb Sanap
CSMSS Dental College, Staff Quarter, Flat No. 6, Kanchanwadi, Aurangabad - 431002, Maharashtra
India

Abstract:

Objective:

This study aimed to evaluate and compare shape variability of soft-tissue outline of skeletal Class II Division 1 patients with various vertical patterns (low, moderate, and high SN-MP angles) and skeletal normal Class I occlusion patients and to evaluate correlative skeletal and dental variables affecting soft-tissue thickness using cephalometric analysis.

Materials and Methods:

Sixty patients were selected with Class I normal occlusion and Class II Division 1 and divided into four groups based on horizontal and vertical skeletal pattern (SN-MP angles) on lateral cephalograms as Group I (normal occlusion), Group II-L (low angle <27°), Group II-N (normal angle 27°–36°), and Group II-H (high angle ≥ 37°). The correlation and multiple linear regression analysis were used to determine skeletal and dental variables influencing soft tissue characteristics.

Results:

The skeletal Class II patients with a high mandibular plane angle had significantly greater values than the skeletal Class II patients with a low mandibular plane angle for basic lower lip thickness and lower lip length. The measurements in perioral soft-tissue thickness were correlated with an inclination of the upper and lower incisors along with facial depth and facial length in skeletal Class II Division 1 patients.

Conclusion:

Lip strain, lip thickness, and dental inclination must be evaluated based on various skeletal patterns for balanced perioral muscle activity.

Source of Support: 

None

Conflict of Interest: 

None

DOI: 10.4103/ijor.ijor_43_19

How to cite this article: Khatri JM, Sanap NB. Comparative evaluation of perioral soft tissue of skeletal normal Class I and Class II Division 1 subjects: A lateral cephalometric study. Int J Orthod Rehabil 2020;11:1-8.