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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 …