Prediction of nasal morphology in facial reconstruction: Validation and recalibration of the Rynn method

•The study assessed the accuracy of nasal morphology prediction of Rynn method.•Rynn method may not be representative and applicable of this sample.•Recalibration of the Rynn method and its formulae gave satisfactory results with less error.•Rynn method is easy to apply and practical for facial reconstruction practitioners. Prediction of the nose from the skull remains an important issue in forensic facial approximation. In 2010, Rynn et al. published a method of predicting nose projection from the skull. With this method, three craniometric measurements (x, y, z) are taken, and these are then used in regression formulae to estimate the nasal dimensions. The purpose of this study was to examine and test the accuracy of the Rynn et al. method and if necessary to adapt the formulae for this population. A sample of 90 CT scans of Turkish adults was used in the study. The actual and predicted dimensions were compared using t-test. The age of the individuals ranged from 20 to 40 years by sex. The descriptive statistics and correlations were calculated, and the actual and predicted measurements were compared. The differences between the actual and predicted values were statistically significant (p