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[Study on bonding strength between self-made metal stub and Vita Mark II ceramic block]
Yun-feng Zhao1, Ming-zhe Li, Yong Li
1Department of Prosthodontics, West China Stomatological Hospital, Sichuan University, Chengdu 610041, China.
Objective:
To study the effect of different surface treatments and different bonding agents on the bonding strength between self-made metal stub and Vita Mark II ceramic block.
Methods:
Sandblasting and grinding were used to treat the surface of metal stub; epoxy resin and alpha-cyanoacrylate ester were selected; shear bonding strength was tested and the water-resist test was carried out.
Results:
At normal temperature, the maximum bonding strength between the surface of metal stub (treated by sandblasting) and alpha-cyanoacrylate ester (as bonding agent) was determined to be (842.60 +/- 56.06) N, but it decreased to 0 after 15-day water-resist test. The maximum bonding strength between the surface of stub (treated by grinding) and epoxy resin (as bonding agent) was determined to be (762.44 +/- 214.82) N, which was not significantly different from the maximum bonding strength of the sandblasting-treatment group (P > 0.05), and no significant change of the bonding strength was seen after 15-day water-resist test.
Conclusion:
Epoxy resin has good properties; it is the suitable bonding agent of choice for forming a firm bond between metal stub and ceramic block.
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