IADR Abstract Archives
Coincidence of Dental midline with facial midline in a sample of Pakistani population
Aim: To investigate the coincidence of the facial and dental midlines in a sample of Pakistani subjects.
Methods: Total 117 subjects were selected from dental students of Fatima Jinnah Dental College, Karachi. Facial portrait photographs using a DSLR camera were obtained while keeping the teeth in maximum inter-cuspation position. A metallic scale with millimeter markings was held along the face in all photographs to be used as a reference for resizing the images with the software. Computer software AutoCAD 2017 was used to analyze the photographs. Distance of facial midline with maxillary dental and mandibular dental midline were measured. Negative values indicated deviations of the dental midline towards left in relation to facial midline while positive values were given to right side deviations. SPSS version 23.0 was used for data analysis. Bivariate correlation with Pearson's correlation coefficient was applied to correlate the three midlines. The level of significance level was kept at 0.05.
Results: The coincidence of maxilla-mandible midlines was 64.1% (75/117); whereas, coincidence of facial midline with maxillary and mandibular midlines were 47.9% (56/117) and 46.1% (54/117), respectively. Dental midlines are likely to be deviated in the same direction as that of facial midline (p<0.01). It may be more likely that the dental midline occurring naturally are deviated towards the left side of the face.
Conclusion: The coincidence of inter-maxillary midlines was seen in two-thirds of the participants only. The dental midlines were coincident with the facial midline in less than half of the sample.
Methods: Total 117 subjects were selected from dental students of Fatima Jinnah Dental College, Karachi. Facial portrait photographs using a DSLR camera were obtained while keeping the teeth in maximum inter-cuspation position. A metallic scale with millimeter markings was held along the face in all photographs to be used as a reference for resizing the images with the software. Computer software AutoCAD 2017 was used to analyze the photographs. Distance of facial midline with maxillary dental and mandibular dental midline were measured. Negative values indicated deviations of the dental midline towards left in relation to facial midline while positive values were given to right side deviations. SPSS version 23.0 was used for data analysis. Bivariate correlation with Pearson's correlation coefficient was applied to correlate the three midlines. The level of significance level was kept at 0.05.
Results: The coincidence of maxilla-mandible midlines was 64.1% (75/117); whereas, coincidence of facial midline with maxillary and mandibular midlines were 47.9% (56/117) and 46.1% (54/117), respectively. Dental midlines are likely to be deviated in the same direction as that of facial midline (p<0.01). It may be more likely that the dental midline occurring naturally are deviated towards the left side of the face.
Conclusion: The coincidence of inter-maxillary midlines was seen in two-thirds of the participants only. The dental midlines were coincident with the facial midline in less than half of the sample.