Study on the Mandibular Rest Position. Changes of Mandibular Position with Tongue Space Narrows.

  • Watanabe Hideaki
    Department of Complete Denture, The Nippon Dental University, School of Dentistry at Niigata
  • Shimizu Kimio
    Department of Complete Denture, The Nippon Dental University, School of Dentistry at Niigata
  • Ohnuma Tomoyuki
    Department of Complete Denture, The Nippon Dental University, School of Dentistry at Niigata
  • Enomoto Tomohiko
    Self-Defense Forces Central Hospital
  • Morita Osami
    Department of Complete Denture, The Nippon Dental University, School of Dentistry at Niigata

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Other Title
  • 下顎安静位に関する研究  舌房の狭小化による下顎位の変化
  • Changes of Mandibular Position with Tongue Space Narrows
  • 舌房の狭小化による下顎位の変化

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The purpose of this study was to investigate the effects of tongue space reduction on the mandibular positioning at the mandibular rest position. The three-dimensional positioning of the mandibular incisor tooth point and its variable range were determined at the mandibular rest position using three different tongue space reducing devices. The results were as follows:<BR>1. The vertical and anteroposterior components of mandibular positioning range at the mandibular rest position were increased by tongue space reduction.<BR>2. The lateral component of mandibular positioning range at the rest position was not significantly affected by hemilateral reduction of the tongue space.

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