1. Shear bond strength determinations on various kinds of luting cements with tooth structure and cast alloys using a new testing device
- Author
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P.P.E. Duijsters, C.A. Krabbendam, Cl Davidson, and H.C. ten Harkel
- Subjects
Materials science ,medicine.medical_treatment ,Dental Cements ,Crown (dentistry) ,stomatognathic system ,medicine ,Humans ,Composite material ,Dental Enamel ,General Dentistry ,Enamel paint ,Acid etching ,Dental enamel ,technology, industry, and agriculture ,Dental Bonding ,Adhesion ,Equipment Design ,Shear bond ,stomatognathic diseases ,Casting (metalworking) ,visual_art ,Dentin ,visual_art.visual_art_medium ,Adhesive ,Stress, Mechanical ,Dental Alloys - Abstract
Three different dental luting agents (a polyalkenoate (glass-ionomer), a BIS-GMA-based material and a bipolyester adhesive) for crown and bridgework were investigated for shear bond strength between dental enamel, dentine and three types of casting materials (high gold, silver-palladium and non-precious alloys). The role of acid etching and sandblasting of the substrates was also investigated. A special apparatus was designed for this purpose. Adhesion to the non-precious alloys reached values as high as 30 MPa, while adhesion to precious alloys offered values approaching those with dentine, being in the order of 5–10 MPa. Acid etching of dentine decreased the adhesion, while the adhesion to enamel was promoted by acid etching. The results of this investigation indicated that the reliability of this testing device proved to be better than the tests described in other studies.
- Published
- 1987