Tensile bond strength of composite luting cements to metal alloys after various surface treatments

• Main Authors: Denizoglu Saip, Hanyaloglu Cem, Aksakal Bunyamin
• Format: Article
• Language: English
• Published: Wolters Kluwer Medknow Publications 2009-01-01
• Series: Indian Journal of Dental Research
• Subjects: Adhesion; metal casting alloys; surface treatment
• Online Access: http://www.ijdr.in/article.asp?issn=0970-9290;year=2009;volume=20;issue=2;spage=174;epage=179;aulast=Denizoglu

<b>Aims:</b> To evaluate the effects of two different surface treatments and bonding agents on tensile bond strength between a Co-Cr and a Ni-Cr cast alloy and two resin-luting cements. <b> Materials and Methods:</b> Two hundred and forty alloy samples were cast and subjected to surface treatments such as sandblasting, chemical etching, and sandblasting plus chemical etching. Panavia F and CandB cement were used as cementing mediums. The etching qualities were examined by a stereooptic microscope. Failure surfaces were examined throughout scanning electron microscopy. The data were evaluated using statistical methods, namely analysis of variance and multiple comparison test (Tukey HSD). <b> Results: </b> Significant differences were found in the bonding provided by the various cements (P &lt; 0.001) and also type of surface treatments (P &lt; 0.001). For all groups, sandblasted surfaces showed the highest bond strength values. There was no significant difference between the Cr-Co and the Cr-Ni alloys (P &gt; 0.05). <b> Conclusions:</b> Panavia F showed higher tensile strength and the sandblasted samples possessed higher tensile strength.