Adhesion procedure for CAD/CAM resin crown bonding: Reduction of bond strengths due to artificial saliva contamination
Adhesion procedure for CAD/CAM resin crown bonding: Reduction of bond strengths due to artificial saliva contamination
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DOI：
10.1016/j.jpor.2017.08.006
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发表时间：
2018-04-01
影响因子：
3.6
通讯作者：
Yatani, Hirofumi
中科院分区：
文献类型：
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作者：
Kawaguchi-Uemura, Asuka;Mine, Atsushi;Yatani, Hirofumi
目的：本研究旨在阐明唾液污染如何影响CAD/CAM树脂块的树脂粘固剂的微拉伸粘结强度，并确定一种去污方法，可以恢复原始bondstrength.Methods：KATANA AVENCIA块（Kuraray Noritake Dental）喷砂的粘附体表面（P-Co组）。然后，用人工唾液（Saliveht Aerosol，Teijin）污染该块。分别制备了自然风干（N-Co）、喷砂（Sb）和磷酸酸洗（AT）组。硅烷处理后，构建PANAVIA V5（Kuraray Noritake Dental），并在浸入水中后测量微拉伸粘结强度（μ TBS）（每组n = 24）。结果：P-Co组的mTBS值最高，N-Co组的粘结强度显著低于其他各组（P < 0.001）。在所有组中，由于长期水储存导致粘合强度降低。N-Co组表面有污染层，接触角明显小于其他组（P < 0.001）。Sb组和AT组因人工唾液污染而降低的mTBS值显著升高，但未恢复到P-Co组的值（P < 0.001）。扫描电镜显示P-Co、Sb和AT组之间无形态学差异。Sb组表面粗糙度增加。结论：人工唾液污染显著降低了CAD/CAM树脂块与粘接剂骨水泥之间的长期粘接耐久性。但是，喷砂或磷酸清洗可以恢复75- 85%的粘结效果。(c)2017日本口腔修复学会。由爱思唯尔有限公司发布
Purpose: The present study aimed to elucidate how saliva contamination affects microtensile bond strength of resin cement to CAD/CAM resin blocks and identify a decontamination method that can restore original bond strength.Methods: The KATANA AVENCIA block (Kuraray Noritake Dental) was sandblasted on the adherend surface (P-Co group). Then, the block was contaminated with artificial saliva (Saliveht Aerosol, Teijin). Air dry (N-Co), sandblasting (Sb) and phosphate acid cleaning (AT) groups were prepared. After silane treatment, PANAVIA V5 (Kuraray Noritake Dental) was built up and microtensile bond strength (mu TBS) was measured after immersion in water (n = 24 per group). Scanning electron microscopy (SEM) analysis, surface roughness and contact angle measurement of each surface were performed.Results: The P-Co group showed the highest mTBS value, and bond strength was significantly lower in the N-Co group than the other groups (P < 0.001). In all groups, decreased bond strength resulted from long-term water storage. In the N-Co group, a contaminated layer was observed on the surface by SEM and the contact angle was significantly smaller than the other groups (P < 0.001). In Sb and AT groups, mTBS values that were reduced by artificial saliva contamination significantly increased but did not recover to P-Co group values (P < 0.001). SEM showed no morphological difference between P-Co, Sb and AT groups. The Sb group showed increased surface roughness.Conclusion: The long-term durability of bonds between CAD/CAM resin blocks and luting agent cement was significantly reduced by artificial saliva contamination. However, sandblasting or phosphoric acid cleaning can recover bonding effectiveness by 75-85%. (c) 2017 Japan Prosthodontic Society. Published by Elsevier Ltd.