Photogrammetric Correlation of Face with Frontal Radiographs and Direct Measurements
Journal Title: Journal of Clinical and Diagnostic Research - Year 2017, Vol 11, Issue 5
Abstract
Introduction: Photogrammetry is a science of making measurements from photographs. As cephalometric analysis till date has focused mainly on skeletal relationships, photogrammetry may provide a means to reliably assess and compare soft tissue and hard tissue measurements. Aim: To compare and correlate linear measurements taken directly from subject’s faces and from standardized frontal cephalometric radiographs and to correlate them with standardized frontal facial photographs of Indian population and to obtain mean values. Materials and Methods: A cross-sectional study was conducted on 30 subjects of Indian origin. Frontal cephalograms and standardized frontal photographs were obtained from subjects in the age group of 18- 25 years. Vernier calipers were used to obtain facial measurements directly. Photographs and radiographs were uploaded and measured using Nemoceph software. Analogous cephalometric, photographic and direct measurements were compared by one-way ANOVA to assess Pearson correlation coefficients for 12 linear measurements (6 vertical, 6 horizontal). Bonferroni post-hoc test was done for pair wise comparison. Results: Among all measurements used, OR-OL (orbitale rightorbitale left) showed a high correlation r = 0.76, 0.70, 0.71. There was moderate correlation with EnR-EnL (endocanthion rt – endocanthion lt) r= 0.62, 0.68, 0.68. Highly significant correlation was evident with N-Sn, EnR-EnL and AgR-AgL with p<0.001. Conclusion: A statistically significant correlation was found between photographic, radiographic and direct measurements. Therefore, photogrammetry has proven to be an alternative diagnostic tool that can be used in epidemiologic studies when there is a need for a simple, basic, non-invasive and costeffective method.
Authors and Affiliations
Gunjan Negi, Swaroopa Ponnada, N. K. S. Aravind, Prasad Chitra
Keywords
Related Articles
- EP ID EP347135
- DOI 10.7860/JCDR/2017/28249.9924
- Views 93
- Downloads 0
Depressive Symptoms and Bio-psychosocial Problems among Postmenopausal Women of Udupi District, Karnataka, India
ABSTRACT Introduction: Menopause is the transition period in women’s life. Though it is a normal phenomenon, it has challenging situations. Many women shift to menopause without facing psychiatric problems; however, ther...
Thyroid Hormone Levels in Chronic Alcoholic Liver Disease Patients Before and After Treatment
Introduction: Alcoholic liver disease affects almost all aspects of the thyroid gland including the thyroid hormone levels and the thyroid gland size. The altered thyroid hormone levels in alcoholic liver disease may aff...
Impact of High Levels of Pregnancy Associated Plasma Protein-A on Pregnancy
ABSTRACT Introduction: Routinely performed aneuploidy screen takes into account free beta human chorionic gonadotrophins (β-hCG), Pregnancy Associated Plasma Protein-A (PAPP-A), nuchal translucency, and various maternal...
Evaluation of Gingival Microleakage in Deep Class II Closed Sandwich Composite Restoration: An In vitro Study
ABSTRACT Introduction: Microleakage is a major problem beneath deep Class II composite restorations where little or no enamel remains. One technique to overcome this problem is sandwich restoration in which an intermedia...
Magnetic Resonance Imaging in Paediatric Spinal Dysraphism with Comparative Usefulness of Various Magnetic Resonance Sequences
Introduction: Spinal dysraphism occurs due to failure of fusion of parts along dorsal aspect of midline structures lying along spinal axis from skin to vertebrae and spinal cord. Congenital spinal anomalies may be minima...