[Adhesive strengths of cast crowns with various types of cements].
In an in vitro study the adhesive strength of sand-blasted castings (gold alloy) was tested on human teeth prepared and finished in different ways. For cementation we used two glass ionomer and one phosphate cement. On the surfaces treated with carbide finishing instruments the force required for separating the crown from the tooth was about 1.9 N/mm2 for Ketac-cem, about 2 N/mm2 for Fuji Ionomer, and about 1.8 N/mm2 for Harvard (a zinc oxide phosphate cement). Compared with this, the values obtained for dentin surfaces pretreated with fine diamonds (red ring) were 1.5 N/mm2 for Ketac-cem, 1.6 N/mm2 for Fuji Ionomer, and 1.9 N/mm2 for Harvard. The measured differences between the various types of cement were statistically not significant.
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Zentrum für Zahn-, Mund- und Kieferheilkunde Bonn.
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D003442:Crowns; D001840:Dental Bonding; D003804:Dentin; D005899:Glass Ionomer Cements / Q000737:chemistry; D006047:Gold Alloys; D006801:Humans; D008277:Magnesium Oxide / Q000737:chemistry; D011076:Polycarboxylate Cement / Q000737:chemistry; D013718:Tensile Strength; D015034:Zinc Oxide / Q000737:chemistry; D015036:Zinc Phosphate Cement / Q000737:chemistry
D005899:Glass Ionomer Cements; D006047:Gold Alloys; D011076:Polycarboxylate Cement; D008277:Magnesium Oxide; C037885:Fuji-ionomer; D015036:Zinc Phosphate Cement; C074226:Harvard Cement; C040235:Ketac-cem; D015034:Zinc Oxide
Haftkraft von Vollgusskronen in Abhängigkeit vom Befestigungszement.