Failure load of teeth restored by use of alumina copings: influence of residual tooth structure and cementation
To evaluate failure loads of teeth restored by use of alumina-coping, and to assess the effects of different amounts of residual tooth structure and different cements, standardized artificial alumina copings were fabricated on seventy-two molars. 24 of the copings were cemented by use of an adhesive...
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| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
July 30, 2013
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| In: |
Dental materials journal
Year: 2013, Jahrgang: 32, Heft: 4, Pages: 537-543 |
| ISSN: | 1881-1361 |
| DOI: | 10.4012/dmj.2013-016 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.4012/dmj.2013-016 Verlag, lizenzpflichtig, Volltext: https://www.jstage.jst.go.jp/article/dmj/32/4/32_2013-016/_article 
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| Verfasserangaben: | Marc Schmitter, Tomislav Posavec, Denise Mueller, Katrin Mussotter, Peter Rammelsberg and Stefan Rues |
| Zusammenfassung: | To evaluate failure loads of teeth restored by use of alumina-coping, and to assess the effects of different amounts of residual tooth structure and different cements, standardized artificial alumina copings were fabricated on seventy-two molars. 24 of the copings were cemented by use of an adhesive resin cement (P-group), n=24 by use of glass-ionomer cement (K-group), and n=24 by use of a self-adhesive modified composite resin-cement (R-group). After artificial ageing (10,000 thermal-cycles between 6.5 and 60°C; 1,200,000 chewing cycles with Fmax=64 N), the specimens were loaded until failure (cross-head-speed: 0.5 mm/min). In the K-group 83% of the specimens failed during chewing simulation. Statistical analysis included chi-squared-test, unpaired-to-sample-t-test, and ANOVA. For severely damaged teeth, loads to failure in the P-group (384 N) were significantly (p=0.03) higher than in the R-group (295 N). For severely damaged teeth, use of composite resin cement resulted in higher loads to failure than use of other cements. |
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| Beschreibung: | Gesehen am 12.07.2021 |
| Beschreibung: | Online Resource |
| ISSN: | 1881-1361 |
| DOI: | 10.4012/dmj.2013-016 |