インプラント補綴における咀嚼リズムに関する臨床的研究

DOI 被引用文献4件 参考文献13件

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  • A Clinical Study on Chewing Rhythm in Patients with Implant Prosthesis

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With the spread of implant prosthesis, the importance of occlusion has become known. It is considered that the occlusion on the implant prosthesis should be grasped not only morphologically but also functionally.<br/> The purpose of this study was to clarify the characteristics of chewing rhythm on implant prosthesis and to enhance examination and diagnosis thereof. Seven patients with implant prosthesis in the molar region were selected as the test group, and 20 persons who have individual normal occlusion were selected as the control group. The chewing movements were recorded and analyzed with Sirognathograph Analyzing System III. Then the results of the two groups were comparatively examined.<br/> The results were as follows:<br/> 1. On implant side chewing as compared with that of the control group, increase in the duration of the occluding phase and cycle time was observed. While the ratio of the duration of the opening and closing phase to cycle time decreased, the ratio of the duration of occluding phase to cycle time increased. In addition, the stability of the duration of each phase was lower than that of the control group.<br/> 2. On segmental chewing in the implant region as compared with that of the control group, increase in the duration of the occluding phase was observed. While the ratio of the duration of the opening phase to cycle time decreased, the ratio of the duration of the occluding phase to cycle time increased.<br/> 3. On segmental chewing in the implant region as compared with implant side chewing, increase in the ratio of the duration of the closing phase to cycle time was observed.

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