Correlation between flexural and indirect tensile strength of resin composite cements
| Autor: | Nadja Rohr, Gianluca Cassina, Jens Fischer |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Dental Stress Analysis
Aging Screening test RelyX Unicem Resin composite Curing mode 0206 medical engineering Clinical Neurology Dentistry 02 engineering and technology Composite Resins Sensitivity and Specificity Phosphates Flexural strength 03 medical and health sciences 0302 clinical medicine Tensile Strength Ultimate tensile strength Materials Testing Medicine Humans Resin composite cement Auto-polymerizing cement Composite material General Dentistry Curing (chemistry) Tensile testing business.industry Dentistry(all) Research technology industry and agriculture Panavia 21 030206 dentistry Indirect tensile strength Dual-curing cement 020601 biomedical engineering Resin Cements Otorhinolaryngology Neurology (clinical) business |
| Zdroj: | Head & Face Medicine |
| ISSN: | 1746-160X |
| Popis: | Background To evaluate a potential correlation between flexural strength and indirect tensile strength in assessing the mechanical strength of resin composite cements. Methods Flexural strength (n = 5) and indirect tensile strength (n = 5) of 7 resin composite cements (RelyX Unicem 2 Automix [RXU], Panavia SA [PSA], Clearfil SA [CSA], Panavia F2.0 [PF2], Multilink Implant [MLI], DuoCem [DCM], Panavia 21 [P21]) were determined. Specimens were either auto-polymerized or dual-cured (except P21) and stored in water at 37 °C for 1 day prior to measurement. Flexural and indirect tensile strength of 4 cements (RXU, PSA, PF2, MLI) was additionally measured directly after curing and after 96 h water storage at 37 °C. Results Except for PF2, dual-cured specimens achieved higher flexural strength than auto-polymerized specimens. In the indirect tensile strength test differences in auto-polymerized and dual-cured specimens were only detected for RXU and DCM. A general non-linear correlation was found between flexural and indirect tensile strength values. However, strength values of auto-polymerized and dual-cured specimens did not generally correlate. Conclusions Flexural strength and indirect tensile strength of resin composite cements are correlated. At high strength values the indirect tensile test is less sensitive than the flexural test. The results suggest that the indirect tensile test may only be recommended as a screening test especially for low or medium strength resin composite cements. |
| Databáze: | OpenAIRE |
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