乳歯列と永久歯列の関連性について

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タイトル別名
  • The Relationship between Deciduous Dentition and Permanent Dentition
  • Part 7 Investigation on the Palatal Forms by Moire Topography
  • 第7報 モアレトポグラフィによる口蓋形態について

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In an attempt to predict permanent dentition on the basis of deciduous dentition, serial dental casts (upper jaw) of deciduous and permanent dentition were obtained from subjects whose deciduous dentition with normal occlusion proceeded to permanent dentition with norma locclusion and those who developed angle I grade malocclusion after deciduous dentition with normal occlusion. Morphological features of the palates of these subjects were examined using moire topography, and the following results were obtained.<BR>1. There were no differences in palate width between the normal occlusion group and the malocclusion group.<BR>2. Palate length at the deciduous canies and first molars and at the permanent second premolars was shorter in the malocclusion group than in the normal occlusion group.<BR>3. Palate height at the deciduous canies was smaller in the malocclusion group than in the normal occlusion group.<BR>4. Palate volume anterior to the permanent canies was smaller in the malocclusion group than in the normal occlusion group.<BR>5. The above findings indicate that the difference between subjects with normal occlusion and malocclusion of their permanent dentition is in the morphology of their palates, particularly in the anterior portion of the palate at the time of their deciduous dentition, and that those who develop malocclusion of their permanent dentition tend to have short and shallow anterior palates. These findings may provide Important information for occlusal guidance.

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