Background: The rationale of conducting this study was that beside skeletal and dental problems, chin thickness is an important factor for making profile more acceptable. According to many studies describe the soft tissue chin thickness of different population in all three mandibular divergence patterns, which will help us in treatment planning and making evidence based decisions in patients with complaints regarding chin and lower jaw prominence. Material and method: Lateral cephalogram were obtained from the data of 120 patients who were stratified on the basis of ANB in to skeletal class I (n=60) and skeletal class II (n=60) above the age of 18 years and were divided in to three subgroups based on the cephalometric mandibular plane inclination (MP) to anterior cranial base (SN) as Hypodivergent- (<28⁰). Normodivergent-(28⁰-36⁰) and Hyperdivergent -(>36⁰) , soft tissue chin thickness was measured at three points using dolphin imaging system namely soft tissue to hard tissue pogonion (Pog-Pog’), soft tissue to hard tissue Gnathion ( Gn-Gn’) and soft tissue to hard tissue menton (Me-Me’) Collected data was analyzed statistically by using unpaired t-test and conclusions were drawn. Results : All STC thickness had the highest measurement in class II hypodivergent group as compared to class I and gradually decrease across the groups , lowest being in hyperdivergent group in both males and females. Conclusion: The result provide evidence of strong but complex relationship between STC thickness and skeletal class, it varies according to gender, race and growth pattern of individual.
Key words: Soft tissue, mandibular, thickness, chin.
Received: 11 January, 2019 Revised: 28 January, 2019 Accepted: 10 February, 2019
Corresponding author: Dr. Nishigandha Shinde, Post Graduate Student, Department of Orthodontics and Dentofacial Orthopedics, Dr D Y Patil Vidyapeeth University, Pimpri. Pune Maharashtra. 411018, India
This article may be cited as: Shinde N, Jethe S, Agarkar S, Deshmukh S, Kharche A, Rahalkar J. Comparative Evaluation of Soft Tissue Chin Thickness in Skeletal Class I and Class II Adults with Three Mandibular Divergence- A Cephalometric Study. J Adv Med Dent Scie Res 2019;7(2):33-40.