Retentive Force of the Konus Telescope on One-piece Implant
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概要
- 論文の詳細を見る
The objective of this study was to evaluate the retentive force of one-piece implant (Nobel Direct; Nobel Biocare, Sweden) -supported overdentures including a telescope system. The regular platform Nobel Direct (4.3 mm dia.) was embedded in a brass patrix frame (10 x 10 x 25 mm) using autopolymerized polymethyl methacrylate (PMMA; Unifast II, GC). Two sizes of O-rings [O1 (2.8 mm dia.) and O2 (3.8 mm dia.), SAN-EI, Japan] and protection caps (PC; Straumann) were placed on the Nobel Direct abutment head. The plastic patterns of the Konus telescope outer crown were fabricated on the Nobel Direct abutment head and cast using the GC autocast system. As a control, the PMMA resin (RE) was made to directly touch the abutment head. The patrix and matrix frames were connected under 2 kg and then mounted on a screw-driven mechanical testing machine (Model UTM II, Toyo Boldwin, Japan). The retentive force (n=5, N) obtained at a crosshead speed of 40 mm⁄min was analyzed by ANOVA⁄Scheffes test (α=0.05). The larger O-ring had less retentive force than the smaller O-ring. The Konus telescope had a retentive force comparable to that of the smaller O-ring (p>0.05). Although the retentive forces of the Konus telescope tended to increase as the connecting load increased, the force of the O-ring did not vary according to the connecting loads. For the one implant-supported overdentures, not only a medium-sized O-ring and protection cap but also coping and Konus telescopes demonstrated having appropriate retentive force.
- 2008-07-01
著者
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OHKUBO Chikahiro
Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine
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HOSOI Toshio
Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine
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SHIMPO Hidemasa
Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine
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KURIHARA Daisuke
Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine
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KOBAYASHI Mariko
Department of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences
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ISHIKAWA Yasutaka
Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine
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MURATA Toshiyuki
Training Institute of Dental Technician, Tsurumi University School of Dental Medicine
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Kobayashi Mariko
Department Of Cardiovascular Surgery Sakakibara Heart Institute Japan Research Promotion Society For
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Kurihara Daisuke
Department Of Removable Prosthodontics Tsurumi University School Of Dental Medicine
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Hosoi Toshio
Department Of Removable Prosthodontics Tsurumi University School Of Dental Medicine
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Kurihara Daisuke
Department Of Biotechnology Graduate School Of Engineering Osaka University
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Shimpo Hidemasa
Department Of Removable Prosthodontics Tsurumi University School Of Dental Medicine
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Ohkubo Chikahiro
Department Of Removable Prosthodontics School Of Dental Medicine Tsurumi University
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Ishikawa Yasutaka
Department Of Removable Prosthodontics Tsurumi University School Of Dental Medicine
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Kobayashi Mariko
Department Of Removable Prosthodontics Tsurumi University School Of Dental Medicine
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Murata Toshiyuki
Training Institute Of Dental Technician Tsurumi University School Of Dental Medicine
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Kobayashi Mariko
Department Of Cardiovascular Surgery Sakakibara Heart Institute
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KOBAYASHI Mariko
Department of Biomedical Engineering/ND20, Lerner Research Institute, Cleveland Clinic
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