Bond strength of a compsite luting agent to alumina ceramic surfaces

DSpace Repository

Bond strength of a compsite luting agent to alumina ceramic surfaces

Show full item record

Files for download

Find Full text There are no files associated with this item.


Simple item record

Publication Article, peer reviewed scientific
Title Bond strength of a compsite luting agent to alumina ceramic surfaces
Author(s) Derand, Tore ; Molin, Margareta ; Kvam, Ketil
Date 2006
English abstract
OBJECTIVE: The purpose of this study was to evaluate the shear bond strength (SBS) of a dental luting agent to alumina ceramics after different surface pretreatment. MATERIAL AND METHODS: Specimens (n=50) of pressed blocks (10 x 0 x 5 mm) of alumina ceramic (Procera AllCeram) were divided into untreated specimens (AF) as provided by the manufacturer and polished specimens (AP). Five groups of specimens (n=5 x 10) with different surface pretreatments were prepared. Groups 1 and 2: AF and AP without any pretreatment; Group 3: AF treated with silane, (AF-s); Group 4: AF treated with RF plasma spray (AF-RF); Group 5: AF treated with low fusing porcelain (AF-p) glass pearls. Composite cylinders (5 x 5 mm) were cemented to the test specimens with a resin luting agent. The specimens were loaded to failure in shear mode using a universal testing machine. Recorded loads were used to calculate SBS in MPa. The results were analyzed using one-way ANOVA and the Tukey HSD multiple comparison test at alpha = 0.05. Scanning electron microscopic micrographs (SEM) were used to characterize surfaces of interest. RESULTS: Polished surfaces had significantly lower SBS (p < 0.05) compared with untreated specimens (AP vs AF). Silanated, non-polished surfaces (AF-s) revealed lower SBS, even though the result was not significantly different from that of AF-s without silane treatment. Plasma treatment improved SBS by a factor of 2 (p<0.05) and treatment with low-fusing porcelain micro pearls increased SBS by a factor of 3 compared to untreated surfaces (p<0.05). The layer of glass pearls did not exceed 5 microm (SEM). CONCLUSIONS: Within the limitation of the conditions of this study, treatment of alumina oxide ceramic surfaces with a plasma spray coating or a low-fusing porcelain pearl layer significantly increased the SBS of a resin luting agent to the ceramic surface.
DOI (link to publisher's fulltext)
Host/Issue Acta odontologica Scandinavica;4
Volume 64
ISSN 0001-6357
Pages 227-30
Language eng (iso)
Subject(s) Technology
Research Subject Categories::ODONTOLOGY
Handle (link to this page)

This item appears in the following Collection(s)

Show full item record



My Account