Tooth-size discrepancy in mandibular prognathism.
A Bolton analysis of seventy-eight cases of Angle Class III malocclusion, twenty-six cases of Angle Class I malocclusion, and twenty-six cases of Angle Class II malocclusion was recorded. Frequency of excess mandibular tooth structure, magnitude of the excess, over-all ratios, and anterior segment ratios were computed and analyzed. Two clinical cases were presented to show the advantage of tooth-size harmony in mandibular prognathism.  Analysis of the data as presented above suggests the following conclusions: 1. The frequency of mandibular tooth-size excess (over-all ratio) in this sample was greater in cases of mandibular prognathism than in Angle Class I and Angle Class II cases. 2. In those cases with mandibular tooth-size excess, there was a suggestion that the magnitude of the excess was greater in cases of mandibular prognathism than in Angle Class I and Angle Class II cases. 3. A tooth-size discrepancy analysis should be included as one part of the diagnostic records for mandibular prognathism.
D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D007180:Incisor / Q000601:surgery; D008310:Malocclusion / Q000473:pathology* / Q000628:therapy; D008334:Mandible; D009811:Odontometry; D011378:Prognathism / Q000473:pathology* / Q000628:therapy; D014070:Tooth / Q000473:pathology*; D014081:Tooth Extraction; D014087:Tooth Movement Techniques