[Surface structures and substance loss during the etching of ceramic materials].
The progressive development of all-ceramic systems used in prosthetic dentistry gives material-specific aspects a new significance. It was the purpose of this study to examine the surface morphology of various ceramics (Mirage, Dicor, Optec, Vitadur N, Ceramco II) etched with various solutions (Super-Etch, Stripit, hydrofluoric acid 40%, Dicor retention gel) and etching times (1, 2, 3, and 4 min), using a SEM. With the exception of Dicor, the etched surface of ceramics showed similar structures within each material group, regardless of the etching time and the etching solution used. Dicor showed a different pattern depending on the etching time. An additional measurement of the surface roughness revealed an advisable etching time of 1 min with an average loss of ceramic material of 1.6 microns for those ceramics treated with the etching solutions Super-Etch, Stripit and Dicor retention gel. Hydrofluoric acid 40% caused a significant loss of substance and should not be used. A qualitative evaluation of the surface structure of composite cements (Chameleon, Dicor, Optec and Dual cement) in etched ceramics and in etched enamel showed completely filled microretentions.
Schäffer
H
H
Dumfahrt
H
H
Gausch
K
K
D000134:Acid Etching, Dental; D002516:Ceramics; D001840:Dental Bonding; D003738:Dental Cements / Q000494:pharmacology; D003743:Dental Enamel / Q000187:drug effects / Q000648:ultrastructure; D003764:Dental Materials / Q000494:pharmacology*; D006801:Humans; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D013499:Surface Properties
D003738:Dental Cements; D003764:Dental Materials
Oberflächenstruktur und Substanzverlust beim Atzen keramischer Materialien.