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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Journal Article

Improving shear bond strength of temporary crown and fixed dental prosthesis resins by surface treatments  [2016]

Ha, Seung-Ryong; Kim, Sung-Hun; Lee, Jai-Bong; Han, Jung-Suk; et al.

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This study evaluated the effect of surface treatments on the bond strength of repaired temporary resins. One-hundred flat-surfaced cylindrical specimens (Ø 7 mm × 12 mm) of each temporary resin (2 bis-acryl resins and 2 polymethyl-methacrylates) were prepared. The specimens were randomly divided into 10 groups (n = 10), according to the types of surface treatments: untreated, adhesive treated, silanated, silane + adhesive treated, hydrofluoric acid etched, laser treated, sandblasted, sandblasting + adhesive treated, sandblasting + silanated, and tribochemical silica coating + silanated. Each resin material of the same brand with cylindrical shape (Ø 3 mm × 3 mm) was polymerized onto the resin surfaces, and specimens were stored for 24 h in distilled water. The shear bond strengths were measured and failure modes were examined. All data were analyzed with a one-way ANOVA and multiple comparison Scheffé post hoc test (α = 0.05). For bis-acryl resins, the highest shear bond strength was observed in sandblasted group and the lowest was observed in the control group. Results show that the repair bond strength was improved for bis-acryl resin by 23 % than that of the control group due to the increase in surface roughness by sandblasting. However, chemical treatment did not improve repair bond strength. The surface treatment of bis-acryl resins with sandblasting seems to be promising for the improvement of repair bond strength.
From the journal
Journal of materials science
ISSN : 0022-2461

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2016
Volume:
51
Issue:
3
Start Page:
1463
End Page:
1475
Publisher:
Springer US
All titles:
"Improving shear bond strength of temporary crown and fixed dental prosthesis resins by surface treatments"@eng
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2016
Volume:
51
Issue:
3
Start Page:
1463
End Page:
1475
Publisher:
Springer US
All titles:
"Improving shear bond strength of temporary crown and fixed dental prosthesis resins by surface treatments"@eng