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Comparison Of Tooth Size Discrepancy Of Three Main Ethnics In Malaysia With Bolton's Ratio, Rahman A. N. A. A., Othman S. A.
Comparison Of Tooth Size Discrepancy Of Three Main Ethnics In Malaysia With Bolton's Ratio, Rahman A. N. A. A., Othman S. A.
Siti Adibah Othman
The objective of this study was to investigate the applicability of Bolton's ratios in orthodontic population of Malaysian main ethnics; Malay, Chinese and Indians. Ninety convenient samples consisting of 30 pre-orthodontic study casts from each ethnic that fits the inclusion criteria were selected. The greatest mesiodistal widths of each tooth from six to six for overall ratio and three to three for anterior ratio were measured using a digital callipers linked to Hamilton Arch Tooth System software to the nearest 0.01mm. Means of the ratios were calculated using Bolton analysis. One sample t-test statistic analysis was carried out to compare …
Tooth Size Discrepancies In An Orthodontic Population, Othman S. A., Harradine N.
Tooth Size Discrepancies In An Orthodontic Population, Othman S. A., Harradine N.
Siti Adibah Othman
Objective: To explore how many millimeters of tooth size discrepancy (TSD) are clinically significant, to determine what percentage of a representative orthodontic population has such a tooth size discrepancy, and to determine the ability of simple visual inspection to detect such a discrepancy. Materials and Methods: The sample comprised 150 pretreatment study casts with fully erupted and complete permanent dentitions from first molar to first molar, which were selected randomly from 1100 consecutively treated white orthodontic patients. The mesiodistal diameter tooth sizes were measured using digital calipers, and the Bolton analysis and the tooth size corrections were calculated by the …