A certain method of testing bending was developed to test the strength behavior of metal fused to porcelain, independent of the fusion strength, which was based on calculations made according to the finite element method and on test results. The results indicate that, when non-precious metals are used, the wall strength for veneer crowns may not be lower than that required for the utilization of noble metal alloys.

Dental Bonding↗

PubMed1980

[Bending behavior of fused structures].

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Dental Alloys↗

PubMed1980

[Adhesion in metalloceramics].

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Dental Alloys↗

PubMed1979

[Marginal cleft and solubility].

Studies of extracted teeth showed that, when the width of the interval is increased by 0.1 mm, the depth of the interval enlarged an average of 0.067 mm. It would seem that, in terms of cement caries, the attachment cement loosens more quickly under the effect of carious processes. The loss of substance is less when the cement seams are below the gingival cuff. Laboratory tests of cement seams showed the loss of substance to be slight with zinc-oxide-phosphate cements. A distinct shrinkage was observed with carboxylate cements. The greatest amount of loss was reported with the EBA cement.

Crowns↗

PubMed1979

[Dosage and viscosity of carboxylate cements].

The optimal ratio between powder and fluid cannot be obtained in most cases with the dosage suggested in the manufacturers instructions for carboxylate cement. The mixtures usually do not contain enough powder. Pouring tests showed the processing period to be longer. The processing time is shortened by heating the cement to mouth temperature (37 degrees C) after mixing.

Acrylic Resins↗