Head Position affects the antero-posterior location of tapping points

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概要

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• This study assessed how the location of the tapping point is affected by changing the head position. Anintra-oral tracing device consisted of a metal tracing plate and a central bearing pin was used in five fully dentate subjects. The tracing plate was fixed to the maxillary part of the device parallel to the occlusal plane. The central bearing pin was fixed to the mandibular part of the device and was located at the midpoint of a line connecting the bilateral first molars. The pin was placed perpendicular to the tracing plate. The appliance was inserted in the mouth and the subject was asked to perform tapping movements with the head Camper and Frankfort plane placed horizontally. The tapping movements (n=30) were made at a 30 mm-range of motion, and the incisal and condylar points were tracked with a 6-degree-of-freedom jaw movement tracking system (TRIMET ; Tokyo Shizaisha Co., Japan).The antero-posterior distribution of 30 tapping points and their mean position from intercuspal position were analyzed in incisor and condylar points between two head positions. Result revealed that the condylar points Corresponding to the tapping points converged into a small area when the head was positioned with the Camper plane horizontal. However, in both head positions, condylar points were located anteriorly from the intercuspal position. From the results, it can be concluded that head position has it's effects on the distribution and mean position of tapping points. In addition, it can be suggested that from the distribution of scattered tapping points, the head should be positioned with the Camper plane horizontal to record the tapping points at a convergent area.

• 日本顎口腔機能学会の論文
• 2001-11-20

著者

• RAHMAN Mahbubur

  Department of Epidemiological and Clinical Research Information Management, Kyoto University Graduat

• RAHMAN Mahbubur

  Marshfield Epidemiology Research Center, Marshfield Clinic Research Foundation

• Rahman M

  Clinical Practice Evaluation And Research Center St. Luke's Life Science Institute St. Luke&apo

• Rahman Mahbubur

  Marshfield Epidemiology Research Center Marshfield Clinic Research Foundation

• Sawada Koji

  Second Department Of Surgery Hyogo College Of Medicine

• Sagayama Ken

  Second Department Of Surgery Hyogo College Of Medicine

• Kohno Shoji

  Department of Removable Prosthodontics, Niigata University, School of Dentistry

• SAWADA KOJI

  Department of Gastroenterology, Hyogo College of Medicine

• Rahman Mahbubur

  Clinical Practice Evaluation And Research Center St. Luke's Life Science Institute St. Luke&apo

• Sawada Koji

  The Fourth Department Of Internal Medicine Hyogo College Of Medicine

• Kohno Shoji

  Department Of Tissue Regneration And Reconstruction Division Of Removable Prosthodontics Niigata Uni

• Kohno Shoji

  Department Of Removable Prosthodontics Niigata University School Of Dentistry

• Arai Yoshiaki

  Department of Tissue Regneration and Reconstruction, Division of Removable Prosthodontics, Niigata U

• Arai Yoshiaki

  Department Of Tissue Regneration And Reconstruction Division Of Removable Prosthodontics Niigata Uni

• Arai Yoshiaki

  Department Of Removable Prosthodontics School Of Dentistry Niigata University

• Kohno Shoji

  Department Of Dental Technology Meirin College

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