Background:To determine patient orthodontic treatment need, appropriate self-perceived indices are required. The aim of this study was to assess the sensitivity and specificity of esthetic component (AC) of the index of orthodontic treatment need (IOTN), oral esthetic subjective index scale (OASIS), and visual analog scale (VAS) through dental health component (DHC) IOTN as a normative index to determine the more appropriate self-perceived index among young adults.Materials and Methods:In this cross-sectional study, a sample of 993 was randomly selected from freshman students of Isfahan University. Those with a history of orthodontic treatment or current treatment were excluded. DHC was evaluated by two inter- and intra-calibrated examiners. Data for AC, OASIS, and VAS were collected through a questionnaire completed by students. Descriptive statistics, Mann–Whitney U-test, and Spearman correlation test, were used for data analyses. Sensitivity, specificity, positive and negative predictive values of self-perceived indices were calculated through DHC.Results:Sensitivity of AC, OASIS, and VAS for evaluating definite orthodontic treatment need was calculated at 15.4%, 22.3%, and 44.6%, respectively. Specificity of these indices for evaluating definite orthodontic treatment need was calculated at 92.7%, 90.5%, and 76.2% percent, respectively. All self-perceived indices had a significant correlation with together and with DHC (P < 0.01). Among demographic factors, there was weak but significant correlation only between mother's educational level and VAS (P < 0.01).Conclusion:Due to the sensitivity and specificity of the three self-perceived indices, these indices are not recommended for population screening and should be used as adjuncts to a normative index for decision-making in orthodontic treatment planning.

Introduction: Nasal fracture is the most common fracture of the maxillofacial region, so surgeons’ and patients’ satisfaction after closed reduction from aesthetic and functional (including the effects of respiration and olfaction) perspective is important. The aim of this study was to evaluate the satisfaction of surgeons and patients with the appearance and function of the nose after closed reduction surgery during 6-12 months after surgery to improve the outcomes of this procedure. Materials & Methods: This descriptive-analytical and cross-sectional study was performed on 90 patients in Alzahra and Kashani hospitals of Isfahan during the years 1397-1398 who underwent a closed reduction of nasal fracture within 6-12 months after surgery. All patients and surgeons answered questions about aesthetic and functional outcomes and the need for septorhinoplasty after closed reduction. Pearson correlation coefficient, t-test and paired-sample t-test were used to analyze the data. P value less than 0.05 was considered as a significant level. Results: About 55% of patients were satisfied with the aesthetic outcome and 38.8% expressed they would consider further surgery to correct the residual nasal deformity. The mean score of surgeons’ satisfaction for nasal aesthetics and function was 3.74 and 3.50. Surgeons expressed that the patients’ requirement for septorhinoplasty is low to moderate. Conclusion: Satisfaction of the patient and the surgeon with the nasal closed reduction was in high-medium range. Also, according to both patients’ and surgeons’ opinions, requirement for septorhinoplasty surgery has a significant and direct relationship with aesthetic issues and also obstruction of the airway following a nasal bone fracture.