Comparison of the Arcon and the Condylar type articulators on the reproduction of lateral movements Part II : Applying the same articulator settings
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概要
- 論文の詳細を見る
There are two types of adjustable articulators, the Arcon and Condylar. The guiding systems are located on the upper member of the Arcon type articulator and on the lower of the Condylar type articulator. The movement of the articulators are different when the articulator settings on the adjustable mechanisms of both articulators are the same in the reproduction of lateral movements. In addition, when the movements of both articulators are the same, the articulator settings are different. In the present study, we have focused on the effects of the guiding systems on the movement of the articulators. In order to evaluate the difference between type I and type VTH articulators (type I: which has the Arcon type guiding system on the upper member, type VIII: which has the Condylar type guiding system on the lower member), we calculated the lateral movements of both articulators by using a mathematical formulae. The results are as follows: When we apply the same articulator settings of the average lateral movement to both articulators, the largest difference takes place on the horizontal projective angle of the non-working side condylar guidance at 2.8°, whereas the smallest difference is observable on the sagittal projective angle of the non-working side condylar guidance at 0.6°. The three-dimensional discrepancies between both articulators are almost the same on the condylar and tooth pathways at about 0.15mm. This difference is explained by the three-dimensional rotation occurring during the lateral movement. Therefore, the difference between both articulators is affected by the articulator settings of the adjustable mechanisms.
- 日本顎口腔機能学会の論文
- 2004-11-30
著者
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MIURA Hiroyuki
Fixed Prosthodontics, Department of Restorative Science, Graduate School, Tokyo Medical and Dental U
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Miura Hiroyuki
Fixed Prosthodontics Department Of Restorative Sciences Division Of Oral Health Sciences Graduate Sc
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Miura Hiroyuki
Fixed Prosthodontics Department Of Restorative Science Graduate School Tokyo Medical And Dental Univ
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Hara Shinichi
Dental Office Mitsubishi Electric Corporation
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Hasegawa Shigeo
Department Of Cardiology Matsudo Municipal Hospital
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Otake Takehiro
Fixed Prosthodontics, Department of Restorative Sciences, Division of Oral Health Sciences, Graduate
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Tsuruta Jun
Educational Development Section, Department of Health Science Politics, Graduate School, Tokyo Medic
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Arai Izumi
Division of Electronic Engineering, Institute for Medical and Dental Engineering, Tokyo Medical and
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Mayanagi Akihiro
Fixed Prosthodontics, Department of Restorative Sciences, Division of Oral Health Sciences, Graduate
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Mayanagi Akihiro
Fixed Prosthodontics Department Of Restorative Sciences Division Of Oral Health Sciences Graduate Sc
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Hasegawa Shigeo
Dental Office Mitsubishi Electric Corporation
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Arai Izumi
Division Of Electronic Engineering Institute For Medical And Dental Engineering Tokyo Medical And De
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Tsuruta Jun
Educational Development Section Department Of Health Science Politics Graduate School Tokyo Medical
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Otake Takehiro
Fixed Prosthodontics Department Of Restorative Sciences Division Of Oral Health Sciences Graduate Sc
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