Abstract
The present study was aimed to assess the treatment needs amongst orthognathic patients attending the Dental University Hospital at King Saud University using the Index of Orthodontic Treatment Need, Dental Health Component (IOTN-DHC) and the Index of Orthognathic Functional Treatment Need (IOFTN). A retrospective study was conducted on records of subjects who had been attending the Dental University Hospital at King Saud University, Riyadh Saudi Arabia, seeking orthodontic/surgical treatment in the period from 2000 to 2017. The pre-treatment sets of study models with their correspondent clinical photographs and radiographs were graded using the IOTN-DHC and the IOFTN. These assessments were undertaken by two calibrated dentists. The Class III skeletal pattern was the most prevalent type of malocclusion (54.5%). In total, 78.2% of the sample was classified by the IOFTN as having great and very great functional needs, as opposed to 91% classified by the IOTN. The most prevalent IOFTN score was 5.4 (open bite >= 4 mm, 25.4%), followed by 5.3 (reverse OJ >= 3 mm, 18.2%) and 4.2 (increased OJ >= 6 mm and <= 9 mm, 11%). The IOTN and IOFTN indices were highly correlated in assessing treatment needs for craniofacial problems. The IOFTN is a valid and reliable tool to prioritize treatment addressing functional needs. It is highly correlated with the IOTN in the prioritization of healthcare. The vast majority of patients undergoing orthognathic surgical procedures at the dental university hospital were in the great and very great need categories, and the Class III pattern was the most common type of malocclusion to be addressed by an orthognathic approach.