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Comparison Of Arch Form Between Ethnic Malays And Malaysian Aborigines In Peninsular Malaysia, Siti Adibah Othman, Soh Xinwei Eunice, Sheh Yinn Lim, Jamaludin Marhazlinda, Mohamed Nor Himazian, Mohd Yusof Zamros Yuzaidi, Shoaib Lily Azura, Nik Hussein Nik Noriah
Comparison Of Arch Form Between Ethnic Malays And Malaysian Aborigines In Peninsular Malaysia, Siti Adibah Othman, Soh Xinwei Eunice, Sheh Yinn Lim, Jamaludin Marhazlinda, Mohamed Nor Himazian, Mohd Yusof Zamros Yuzaidi, Shoaib Lily Azura, Nik Hussein Nik Noriah
Siti Adibah Othman
Objective: To determine and compare the frequency distribution of various arch shapes in ethnic Malays and Malaysian Aborigines in Peninsular Malaysia and to investigate the morphological diff erences of arch form between these two ethnic groups. Methods: We examined 120 ethnic Malay study models (60 maxillary, 60 mandibular) and 129 Malaysian Aboriginal study models (66 maxillary, 63 mandibular). We marked 18 buccal tips and incisor line angles on each model, and digitized them using 2-dimensional coordinate system. Dental arches were classified as square, ovoid, or tapered by printing the scanned images and superimposing Orthoform arch templates on them. Results: Th …
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 …