Composite-to-composite microtensile bond strength in the repair of a microfilled hybrid resin

Effect of surface treatment and oxygen inhibition

Federica Papacchini, Susanna Dall'Oca, Nicoletta Chieffi, Cecilia Goracci, Fernanda Tranchesi Sadek, Byoung I. Suh, Franklin Chi Meng Tay, Marco Ferrari

Research output: Contribution to journalArticle

91 Citations (Scopus)

Abstract

Purpose: To compare the 24-h microtensile bond strength of a microfilled hybrid composite to the same material after mechanical and/or chemical treatment and assess the effect of oxygen inhibition on the composite-composite bond. Materials and Methods: Forty composite cylinders of Gradia Direct Anterior (GC) were prepared and stored 24 h prior to the following surface treatments: 50-μm aluminum oxide air abrasion and 37% phosphoric acid etching (group 1); hydrochloric acid and 6.9% hydrofluoric acid etching (group 2); diamond bur roughening and 37% phosphoric acid etching (group 3); diamond bur roughening (group 4). In all groups, Prime & Bond NT (Dentsply De Trey) was applied and light cured in air or under a nitrogen atmosphere, prior to layering a buildup of the repairing resin composite. Microtensile bond strength measurements were performed. Data were statistically analyzed with two-way ANOVA and Tukey's test (α = 0.05). Results: The curing atmosphere did not significantly influence the interfacial strength (p < 0.05). Surface treatment significantly affected the composite-composite bond (p > 0.05). Air abrasion, regardless of curing atmosphere, resulted in the strongest bond (p < 0.05). The other treatments were comparable. Conclusion: Air abrasion and the application of a bonding agent offer satisfactory bond strengths for composite repair. The oxygen inhibition layer on a light-cured adhesive is not crucial to the success of the 24-h composite-composite bond.

Original languageEnglish (US)
Pages (from-to)25-31
Number of pages7
JournalJournal of Adhesive Dentistry
Volume9
Issue number1
StatePublished - Mar 21 2007

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Atmosphere
Air
Oxygen
Diamond
Hydrofluoric Acid
Light
Hydrochloric Acid
Aluminum Oxide
Composite Resins
Adhesives
Analysis of Variance
Nitrogen
phosphoric acid

Keywords

  • Composite repair
  • Microtensile bond strength
  • Oxygen-inhibited layer
  • Surface treatment

ASJC Scopus subject areas

  • Orthodontics
  • Oral Surgery
  • Periodontics

Cite this

Papacchini, F., Dall'Oca, S., Chieffi, N., Goracci, C., Sadek, F. T., Suh, B. I., ... Ferrari, M. (2007). Composite-to-composite microtensile bond strength in the repair of a microfilled hybrid resin: Effect of surface treatment and oxygen inhibition. Journal of Adhesive Dentistry, 9(1), 25-31.

Composite-to-composite microtensile bond strength in the repair of a microfilled hybrid resin : Effect of surface treatment and oxygen inhibition. / Papacchini, Federica; Dall'Oca, Susanna; Chieffi, Nicoletta; Goracci, Cecilia; Sadek, Fernanda Tranchesi; Suh, Byoung I.; Tay, Franklin Chi Meng; Ferrari, Marco.

In: Journal of Adhesive Dentistry, Vol. 9, No. 1, 21.03.2007, p. 25-31.

Research output: Contribution to journalArticle

Papacchini, Federica ; Dall'Oca, Susanna ; Chieffi, Nicoletta ; Goracci, Cecilia ; Sadek, Fernanda Tranchesi ; Suh, Byoung I. ; Tay, Franklin Chi Meng ; Ferrari, Marco. / Composite-to-composite microtensile bond strength in the repair of a microfilled hybrid resin : Effect of surface treatment and oxygen inhibition. In: Journal of Adhesive Dentistry. 2007 ; Vol. 9, No. 1. pp. 25-31.
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