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Year : 2018  |  Volume : 5  |  Issue : 4  |  Page : 50-52

A clinical study of incidence, etiology, and pattern of mandibular fractures in K. R. Hospital, Mysore

1 Resident Surgeon, Department of Dentistry, K. R. Hospital, Mysore, Karnataka, India
2 Head of the Department, Department of Dentistry, K. R. Hospital, Mysore, Karnataka, India

Correspondence Address:
Dr. T S Subash
Department of Dentistry, K. R. Hospital, Mysore, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/INPC.INPC_14_19

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Introduction: The mandible is the second-most common fractured part of the maxillofacial region after the nasal bone. The incidences, etiology, and pattern of mandibular fractures vary considerably among the different population; there is a need to evaluate aspects of mandibular fracture in Mysore. The main causes of mandible fractures in this study are road traffic accident (RTA), assault, fall, sports-related injuries, and industrial trauma. Materials and Methods: A total of 50 patients records were taken from MLC books who sustained mandibular fracture presenting to the Department of Dentistry, K.R. Hospital from January 2016 to December 2016. A standardized maxillofacial trauma pro forma was used to record the data in relation to age, gender, etiology, and anatomical site. The mandibular fractures were classified based on the anatomical sites such as symphysis, parasymphysis, body, angle, ramus, condyle, coronoid, and dentoalveolar process. Patients were divided into the following age group of <10 years, 11–20 years, 21–30 years, 31–40 years, 41–50 years, and 50 years and above; data were obtained and analyzed using simple descriptive statistical analysis and Pearson's Chi-squared test. Results: A total of 50 patients with 70 fractures were analyzed for the study, in which 32 were male (64%) and 18 (36%) were female. The patients ranged from <10 years to 50 years. The highest prevalence of fracture occurred in the age group of 21–30 (33.3%) years followed by age group of 50 years and above (28.6%). Mandibular fractures are predominantly caused by RTA which consisted of (16/50, 32%). The second-most common was fall (13/50, 26%), followed by assault (10/50, 20%), sports (8/50, 16%), and industrial trauma (3/50, 6%). RTA was the main cause in the age group of 31–40 years. Fall was the second cause in the age group of 40–50 years and above. RTA remains the predominant cause of mandibular fracture in the age group of 31–40 years in this study. Conclusion: Among 70 fracture sites located in this study, sites which fracture were seen was parasymphysis 31.42%, followed by angle 20%, condyle 18.57%, symphysis and dentoalveolar 8.57%, body 7.14%, ramus 4.28%, and the least was coronoid 1.42%. The parasymphysis is the most common site of fracture in this study similar to the other previous studies. In cases with unilateral fractures, parasymphysis was the most common 33.33%, followed by the angle of 19.60%. The most common combination was parasymphysis and condyle.

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