Effect of Light-Curing Units on Push-Out Fiber Post Bond Strength in Root Canal Dentin
In: Laser physics, Jg. 19 (2009), Heft 8, S. 1867-1871
academicJournal
- print, 56 ref
Zugriff:
The purpose of this study was to evaluate the effectiveness of different light-curing units on the bond strength (push-out) or glass tiber posts in the different thirds of the root (cervical, middle and apical) with different adhesive luting resin systems (dual-cure total-etch; dual-cured and self-etch bonding system; and dual-cure self-adhesive cements), Disks of the samples (n = 144) were used, with approximately 1 mm of thickness of 48 bovine roots restored with glass fiber posts, that were luted with resin cements photo-activated by halogen LCU (QTH, Optilux 501) and blue LED (Ultraled), with power densities of 600 and 550 mW/cm2, respectively A universal testing machine (MTS 810 Material Test System) was used with a 1 mm diameter steel rod at cross-head speed of 0.5 mm/min until post extrusion, with load cell of 50 kg, for evaluation of the push-out strength in the different thirds of each sample. The push-out strength values in kgf were converted to MPa and analyzed through Analysis of variance and Tukey's test, at significance level of 5%. The results showed that there were no statistical differences between the QTH and LED LCUs. The self-adhesive resin cement had lower values of retention. The total-etch and self-adhesive system resin cements seem to be a possible alternative for glass fiber posts cementation into the radicular canal and the LED LCU can be applied as an alternative to halogen light on photo-activation of dual-cured resin cements.
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Effect of Light-Curing Units on Push-Out Fiber Post Bond Strength in Root Canal Dentin
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Autor/in / Beteiligte Person: | CALIXTO, L. R ; BANDECA, M. C ; SILVA, F. B ; RASTELLI, A. N. S ; PORTO-NETO, S. T ; ANDRADE, M. F |
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Zeitschrift: | Laser physics, Jg. 19 (2009), Heft 8, S. 1867-1871 |
Veröffentlichung: | New York, NY: Springer, 2009 |
Medientyp: | academicJournal |
Umfang: | print, 56 ref |
ISSN: | 1054-660X (print) |
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