Diagnostic Accuracy of 3d Scan and Plain Radiograph in Diagnosis of Midface Fractures

OBJECTIVE: To determine the diagnostic accuracy of plain radiographs and 3D scan in diagnosis of mid face fractures by taking surgery findings as a gold standard. STUDY DESIGN : Cross Sectional Study SETTING: study was carried out at  Department of Oral & Maxillofacial Surgery, Nishtar Institute of Dentistry, Multan. DURATION : Study was completed in 6 months from May, 2017 to  November 2017in Nishtar . Methodology: 181 Patients were included  from Department of Oral & Maxillofacial Surgery, Nishtar Institute of Dentistry, Multan after taking informed consent and permission from ethical committee and research department. Demographic information of patients (name, age, gender, duration of  Fracture had taken. Patients from both gender with age range of 18-35 years having Maxillofacial trauma < 10 days were included in this study and patients in which CT scan was contraindicated and those taken any surgical treatment for facial trauma were excluded in this study. Radiographic examination for the cranio-facial complex had performed for all patients followed by routinely and according to the needs of each  individual case. RESULTS: From 181 patients, the minimum age was 18 years and maximum age was 35 years. According to plain radiographs, fracture was detected in  88.4% patients. By using 3D scan, fracture was detected in 96.7% patients. Sensitivity of 3D scan for detection of fracture was calculated as 98.13%, specificity was 14.28%, positive predicted value was 89.71%, negative predicted value was 50% and diagnostic accuracy was 88.39%. CONCLUSION: Among 181 patients, fracture was detected in 88.4% patients by using plain radiographs. By using 3D scan, fracture was detected in 96.7% patients. Sensitivity of 3D scan for detection of fracture was calculated as 98.13%, specificity was 14.28%, positive predicted value was 89.71%, and diagnostic accuracy was 88.39%. Keywords: 3D scan, plain radiographs, mid face fractures DOI : 10.7176/JMPB/60-01 Publication date :October 31 st 2019