Konuskroneを適用した義歯による咀嚼機能の回復に関する研究 : 全部床義歯に対合する症例

概要

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The purpose of this study is to evaluate restoration of masticatory function from the physiological point of view in the application of the cone crown telescope dentures with lower Kennedy Class I. Recently, Cone crown telescopes used to a considerable extend for good retainer to maintain abutment teeth satisfactorily and no resorption of edenturous ridge. Five subjects, upper edentulous and lower Kennedy Class I Casct, were selected and restorated by complete dentures on maxillary and cone crown telescope dentures on mandibles. Masticating function was observed at three objects as follows, electromyography (EMG) with muscle of mastication, biting force and masticatory efficiency. And then the results were compared to the conditions wearing last dentures in every subject, and to 10 natural dentitions. In all subjects, comparing last dentures, rehabilitation in EMG was observed after 4 weeks from insertion and maintained, biting force was increased progressively after 1 week with time. In 3 subjects, masticatory efficiency recuperated after 4 weeks from insertion and the rests, recuperated after 8 weeks. Five subjects were the same level in masticatory rhythms and biting forces comparing to 10 natural dentitions, but were unfavorably in masticatory efficiency.
1991-08-01