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Orthodontics and Orthodontology Commons™
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- Tooth size discrepancy (2)
- Aborigines (1)
- Arch dimension (1)
- Arch form (1)
- Arch shape (1)
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- Bolton's ratio (1)
- Bolton's ratios (1)
- DENTISTRY (1)
- Different malocclusion groups (1)
- Ethnic Groups (1)
- Ethnic group (1)
- Histology (1)
- Human (1)
- Humans (1)
- MALOCCLUSION (1)
- Malaysian ethnics (1)
- Malocclusion (1)
- ORTHODONTIC (1)
- ORTHODONTICS (1)
- Odontometry (1)
- Premolar extractions (1)
- Ratio (1)
- Reproducibility (1)
- Reproducibility of Results (1)
- Review (1)
- Sex Factors (1)
- Sex difference (1)
- TEETH (1)
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- Tooth extraction (1)
Articles 1 - 5 of 5
Full-Text Articles in Orthodontics and Orthodontology
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 …
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 …
Tooth-Size Discrepancy And Bolton's Ratios: A Literature Review, Othman S. A., Harradine N. W.
Tooth-Size Discrepancy And Bolton's Ratios: A Literature Review, Othman S. A., Harradine N. W.
Siti Adibah Othman
OBJECTIVES: To review the literature on Bolton's tooth-size discrepancies (TSD) with specific attention to the prevalence of TSD, and the possible influence of different classes of malocclusion, gender and racial group. Also examined were the validity of the standard deviations from Bolton's samples as an indicator of significant TSD, methods of measurement of TSD and their reproducibility. Based on the review, suggestions are made as to how future work could be improved. RESULTS AND CONCLUSIONS: Studies have reported from 20 to 30% of people with significant tooth-size anterior discrepancies and 5-14% for overall TSD. Bolton's original sample was appropriate for …
Non-Extraction Orthodontic Treatment In Management Of Moderately Crowded Class Ii Division 2 Malocclusion: A Case Report, Othman S. A.
Non-Extraction Orthodontic Treatment In Management Of Moderately Crowded Class Ii Division 2 Malocclusion: A Case Report, Othman S. A.
Siti Adibah Othman
A case report of a 13-year old male presented in his mixed dentition stage with a Class II division 2 incisor relationship on a mild Class II skeletal base, complicated by an increased overbite, retroclined upper and lower incisors (bimaxillary retroclination) and moderate crowding in the upper and lower labial segments. Treatment was undertaken without extraction employing an upper removable appliance with a flat anterior bite plane to correct the overbite, and an anterior screw to proclined the upper incisors while waiting for the eruption of the permanent teeth. Pre-adjusted edgewise fixed appliances were placed in the lower arch, then …