Mandava Prasad1, Mohammed Z Hussain1, Sharath K Shetty2, T Ashok Kumar3, Mohit Khaur4, Suja A George5, Sameen Dalwai1
1Department of Orthodontics and Dentofacial Orthopedics, Narayana Dental College and Hospital, Chinthareddypalem, Nellore, Andhra Pradesh, India.
2Department of Orthodontics, KVG: Dental College, Sullia-Mangalore, India.
3Department of Orthodontics, Narayana Dental College, Chinthareddypalem, Nellore, Andhra Pradesh, India.
4Department of Orthodontics and Dentofacial Orthopedics, DY Patil Dental College and Hospital, Maharashtra, India.
5Department of Orthodontics, Govt: Dental College, Thiruvananthapuram, Kerala, Department of prosthodontics, College of dental sciences, Mangalore, India.
Objective: To measure the arch width and Median mandibular flexure (MMF) values at relative rest and maximum jaw opening in young adults with Dolichofacial, Mesofacial, and Brachyfacial types and tested whether the variation in the facial pattern is related to the MMF values in South Indian population. Materials and Methods: This Prospective clinical study consisted of sample of 60 young adults. The subjects were grouped into 3 groups: Group 1: Brachyfacial, Group 2: Mesofacial and types, Group 3: Dolichofacial. Impressions were taken for all the 60 subjects and the casts were scanned and digitized. The intermolar width was measured for Dolichofacial, Mesofacial, and Brachyfacial subjects at relative rest (R) and maximum opening (O). Results: The statistical analysis of the observations included Descriptive and Inferential statistics. The statistical analysis was executed by means of Sigma graph pad prism software, USA Version-4. Kruskal wallis (ANOVA) followed by Dunns post hoc test was performed. Mann Whitney U-test was performed to assess the difference in MMF values between Males and Females of the three groups. The Mean (SD) Mandibular flexure in individuals with Brachyfacial type was 1.12 (0.09), Mesofacial type was 0.69 (0.21), and Dolichofacial type was 0.39 (0.08). Conclusions: The Mean intermolar width was maximum in Brachyfacial type and minimum in Dolichofacial type. MMF was maximum at the maximum mouth opening position and was maximum in individuals with Brachyfacial type.
Keywords: Brachyfacial, dolichofacial, median mandibular flexure, mesofacial.