30-01-原著05-河合論文.indd

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1 原著 Vol.30 No MDP Durability-enhancing effects of MDP monomer cement and tribochemical treatment on zirconia ceramics Naoko KAWAI, Akiyoshi SHINYA Jie LIN and Akikazu SHINYA Keywords:tribochemical treatment, zirconia, MDP monomer, impact load, durability The purpose of this study was to investigate the influence of the cyclic impact load on the compressive shear bond strength of zirconia. The MDP monomer resin cement Panavia Fluoro Cement was used in this study. Before the shear bond test, three different impact loading conditions compressive direction, shear direction, and no impact and a number of load cycles 1 to 10 6 cycles were performed. The shear bond strengths were greatest without cyclic impact, followed by compressive and then shear cyclic impact. The shear bond strengths increased to a certain extent from one to 10 6 cycles. In other words, the bond strength increased with the passage of time. Applying tribochemical treatment and the MDP monomer resin cement Panavia Fluoro Cement facilitated the durable bond strength of zirconia. キーワード MDP MDP Panavia Fluoro Cement MDP Department of Crown and Bridge School of Life Dentistry at Tokyo, The Nippon Dental University Fujimi, Chiyoda-ku, Tokyo

2 2 Vol. 30 No. 1 緒言 CAD/ CAM Tsukakoshi 16 SiO 2 Si- OH Si-O-Si. MDP 材料および方法 1. 実験材料および試験片の表面処理 Table wt Y 2 O wt ZrO 2 Nikkato Tokyo Japan mm A A mm B B 63 Rocatec Soft 3M ESPE St. Paul USA ESPE -Sil 3M ESPE 2 Rocatec Jr. Bonding System 3M ESPE 600 SiC Buehler Sankei Tokyo Japan K-etchant Kuraray Medical Tokyo Japan SiO µm 10 mm SiO 2 Espe-Sil Table 1 List of materials used in this study Product/ Manufactuter/ Lot number Resin cements Panavia fluoro cement a / Kuraray Medical/ Paste A : 00209A, Paste B : 00116A Oxyguard II/ 00447A Main composition Paste A : BPEDMA, MDP, DMA, silica, barium, sulfate, dibenzoylperoxide, Paste B : N,N-diethanol-p-toluidine, silica sodiumfluoride Polyethylene glycol, glycerine, sodium, benzenesulfinate cont. gel Roctec b / 3M ESPE Roctec-Plus/ Espe-SIL/ µm Al 2 O 3 modified with silica Silane coupling agent BPEDMA, Bisphenol-A-polyethoxy dimethacrylate; MDP: 10-methacryloyloxy-decyl dihydrogenphosphate; DMA, aliphatic dimethacrylate. a 1 Mixing equal amounts of pastes A and B from Panavia Fluoro Cement with a cement spatula for 20 s; 2 application of the mixed cement; 3 excess resin removal from the bonding margin using a laboratory knife, and application of an oxygen blocking gel Oxygard. b The specimens were air-abraded with Rocatec Plus at a pressure of 0.28 MPa from a distance of approx. 10 mm for 13 s in circling movements. The remnants of sand particles were gently air-blown, a silane coupling agent Espe-Sil was applied, and we waited for its evaporation for 5 min.

3 2. 実験方法 3 1 1 10 10 10 2 1 40 10 3 16 40 10 4 2 46 40 10 5 27 46 40 10 6 277 46 40 7 3 7 21 21 21 3 63 3.

3 3 2. 実験方法接着手順 Panavia Fluoro Cement Kuraray Medical Tokyo Japan 20 A B JAPAN MECC Tokyo Japan 147 N 15 kgf JIS Z RH 衝撃試験 JAPAN MECC Tokyo Japan Fig. 1a 0 mm 100 mm 19.6 N 2 kgf 294 N 30 kgf 1.5 L mm 98 N 10 kgf 1 Hz 30 mm/s Fig. 1b A B Fig. 1c A 5. 圧縮せん断接着試験 18,19 Fig. 2 Fig. 1 Cyclic impact testing machine a, load cell of compressive cyclic impact load b, and shear cyclic impact load c.

4 Vol. 30 No. 1 Fig. 2 Shear bond testing condition and device used in this study Fig.

衝撃荷重と負荷回数による圧縮せん断接着強さ MDP 28.8 57.2 MPa 24.3 45.5 MPa 27.0 63.6 MPa p 0.01 95 Qi 1.81 Qj 2.76 Fig. 3 Tukey Fig.

4 4 Vol. 30 No. 1 Fig. 2 Shear bond testing condition and device used in this study Fig. 3 Shear bond strength after cyclic impact load Servopulser EHF-FD1 Shimadzu Kyoto Japan B N 100 mm 2 MPa 0.5 mm/min X R Tukey test 6. 走査電子顕微鏡による破断面の観察 B E-1030 Hitachi Tokyo Japan SEM S-4000 Hitachi Tokyo Japan 5 kv 10 3 結果 1. 衝撃荷重と負荷回数による圧縮せん断接着強さ MDP MPa MPa MPa p Qi 1.81 Qj 2.76 Fig. 3 Tukey Fig Fig. 4 Shear bond strength after different cyclic impact loads Tukey 衝撃荷重と負荷回数による圧縮せん断接着試験後の破断面 SEM 像 SEM Fig. 5a b c 10 6 Fig. 5a Fig. 5b Fig. 5c 考 1. 実験条件 N 3 8 kgf 98 N 10 kgf 98 N 10 kgf 察

5 Fig. 5 SEM image of the failure surface after cyclic impact load 24 36 15 1 10 6 2.

5 5 Fig. 5 SEM image of the failure surface after cyclic impact load 圧縮せん断接着強さに及ぼす衝撃荷重と負荷回数の影響 Panavia Fluoro Cement EX 6 Panavia Fluoro Cement Panavia Fluoro Cement 臨床応用 N mm MPa 30 MPa Panavia Fluoro Cement 結論

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The Eevaluation One Bottle Type Silane Coupling Agents Masahiro Aida, Hideo Kanaya, Taira Kobayashi, Keiji Utsugizaki, Yoshizumi Murata, Tohru Hayakaw

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