scholarly journals Marginal Adaptation of Class V Restorations with Current- Generation Dentin-Bonding Agents: Effect of Different Dentin Surface Treatments

2014 ◽  
Vol 15 (3) ◽  
pp. 331-335
Author(s):  
Marcelo Ferrarezi de Andrade ◽  
Alvaro Henrique Borges ◽  
Matheus Coelho Bandéca ◽  
José Roberto Cury Saad ◽  
Edson Alves de Campos ◽  
...  

Abstract This study sought to assess the use of chlorhexidine with several excipients as a dentin surface treatment and its effect on marginal adaptation of class V restorations with currentgeneration dentin bonding agents. A total of 120 human third molars were selected and allocated into 12 groups, with standardized buccal class V restorations randomly divided into preconditioned dentin rinsed with: water; water + chlorhexidine; ethanol; or ethanol + chlorhexidine. After rinsing of dentin (previously conditioned with 35% phosphoric acid) with the test solutions, the Adper single bond 2, prime and bond 2.1, and Excite bonding systems were applied randomly. Restorations were performed with Filtek™ Z350 XT composite resin. The resulting specimens were subjected to thermal and mechanical load cycling. Quantitative analysis of marginal adaptation was performed on epoxy replicas by means of scanning electron microscopy. Results were assessed by means of the Kruskal- Wallis test (percentages of continuous margins) and Wilcoxon test (differences between percentages of continuous margins before and after thermal cycling and mechanical loading), at a significance level of p < 0.05. Outcomes in the chlorhexidinetreated groups were not superior to those obtained with other treatments. How to cite this article Cavalheiro JP, Tonetto MR, Borges ÁH, Bandéca MC, dos Santos RSS, de Campos EA, Saad JRC, Dantas AAR, de Andrade MF. Marginal Adaptation of Class V Restorations with Current-Generation Dentin-Bonding Agents: Effect of Different Dentin Surface Treatments. J Contemp Dent Pract 2014;15(3):331-335.

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Robert Dalby ◽  
Ayman Ellakwa ◽  
Brian Millar ◽  
F. Elizabeth Martin

Objectives. To examine the effect of immediate dentin sealing (IDS), with dentin bonding agents (DBAs) applied to freshly cut dentin, on the shear bond strength of etched pressed ceramic luted to dentin with RelyX Unicem (RXU) cement.Method. Eighty extracted noncarious third molars were ground flat to expose the occlusal dentin surfaces. The teeth were randomly allocated to five groups (A to E) of sixteen teeth each. Groups A to D were allocated a dentin bonding agent (Optibond FL, One Coat Bond, Single Bond, or Go!) that was applied to the dentin surface to mimic the clinical procedure of IDS. These specimen groups then had etched glass ceramic discs (Authentic) luted to the sealed dentin surface using RXU. Group E (control) had etched glass ceramic discs luted to the dentin surface (without a dentin bonding agent) using RXU following the manufacturer’s instructions. All specimens were stored for one week in distilled water at room temperature and then shear stressed at a constant cross-head speed of 1 mm per minute until failure. Statistical analysis was performed by ANOVA followed by post hoc Tukey HSD method () applied for multiple paired comparisons.Results. The shear bond strength results for group A to E ranged from to  MPa. One-way ANOVA demonstrated a difference () between the groups tested and the Tukey HSD demonstrated a significant () difference between the shear bond strength (SBS) of Optibond FL (Group A) and Go! (Group D). There was no statistical difference () in the SBS between the test groups (A–D) or the control (group E).Conclusion. IDS using the dentin bonding agents tested does not statistically () affect the shear bond strength of etched pressed ceramic luted to dentin with RXU when compared to the control.


1996 ◽  
Vol 15 (1) ◽  
pp. 39-44,72 ◽  
Author(s):  
Chihiro TANI ◽  
Atsufumi MANABE ◽  
Kazuo ITOH ◽  
Hisashi HISAMITSU ◽  
Sadao WAKUMOTO

2013 ◽  
Vol 29 ◽  
pp. e94
Author(s):  
A. Ionescu ◽  
E. Brambilla ◽  
M. Cadenaro ◽  
F. Tay ◽  
D. Pashley ◽  
...  

2012 ◽  
Vol 06 (02) ◽  
pp. 115-122 ◽  
Author(s):  
Bengi Oztas ◽  
Sebnem Kursun ◽  
Gul Dinc ◽  
Kıvanc Kamburoglu

ABSTRACTObjective: The purpose of this in vitro study was to explore the radiopacity of composite resins and bonding materials using film and phosphor plates.Methods: Nine composite dental resin specimens and human tooth slices were exposed together with an aluminium stepwedge using dental film and phosphor plates. Eight dentin bonding specimens were prepared and exposed in a similar manner. Their radiopacity on film was assessed using a transmission densitometer, and the radiopacity with phosphor plates was assessed digitally using the system’s own software (Digora). Data were analysed using one-way analysis of variance (ANOVA) and post-hoc Tukey tests (P<.05). Film and phosphor plate radiopacity values were compared using simple regression analysisResults: Excellent linear correlation was found between film and phosphor plates for both composite resins and bonding agents. The composite materials Spectrum Tph and Natural Look exhibited the highest radiopacity with film and with phosphor plates, respectively. All the dentin bonding agents tested exhibited lower radiopacity than dentin. Conclusion: Synergy, Ice, Filtek Silorane, Filtek Z250, Clearfil Majesty Posterior, Herculite Classic, Spectrum Tph, and Natural Look composite materials exhibited greater radiopacity than dentin, and all the dentin bonding agents tested exhibited lower radiopacity than either enamel or dentin. (Eur J Dent 2012;6:115-122)


1989 ◽  
Vol 5 (5) ◽  
pp. 334-338 ◽  
Author(s):  
E.K. Hansen ◽  
E.C. Munksgaard ◽  
E. Asmussen

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