Journal article
Effect of Antioxidants on the Dentin Interface Bond Stability of Adhesives Exposed to Hydrolytic Degradation
The journal of adhesive dentistry, Vol.17(1), pp.35-44
02/2015
DOI: 10.3290/j.jad.a33515
PMID: 25625137
Abstract
Purpose: This study assessed the effect of antioxidants vitamin C (Vit. C), vitamin E (Vit. E) and quercetin (Querc) on the dentin bonding performance, degree of conversion, and rate of polymerization of three commercial adhesive systems (Adper Single Bond 2 [SB], Clearfil SE Bond [CSE], Adper Easy Bond [EB]).
Materials and Methods: Human premolars were restored using antioxidant-doped adhesives. The samples were stored for 24 h in distilled water or 6 months under simulated pulpal pressure. Teeth were cut into sticks and the microtensile bond strength (mu TBS) to dentin was tested in a universal testing machine. Qualitative nanoleakage analysis was performed from a central stick of each restored tooth. Degree of conversion and rate of polymerization of adhesive systems were evaluated in triplicate using real-time FT-IR.
Results: Although the inclusion of the antioxidants negatively affected the mu TBS over 24 h, the antioxidant-doped adhesives maintained (SB-Vit. C, SB-Vit. E, CSE-Vit. C, EB-Querc) or increased (SB-Querc, CSE-Vit. E, CSE-Querc, EB-Vit. E, and EB-Vit. C) their mu TBS during 6 months of storage. Only the mu TBS of Adper Single Bond 2 dropped significantly after 6 months among the control groups. Slight changes in the nanoleakage pattern after aging were observed in all groups, except for the EB-control group, which showed a noteworthy increase in nanoleakage after 6 months, and for EB-Vit. C, which presented a remarkable decrease. A lower degree of conversion was obtained with all antioxidants in SB and EB, except for the EB-Vit. E group. Similar degrees of conversion were attained in control and experimental groups for CSE. The rate of polymerization was reduced in antioxidant-doped adhesives.
Conclusion: The performance of antioxidants changed according to the adhesive system to which they were added, and antioxidant-doped adhesives appear to have a positive effect on the adhesive interface durability, since their bond strength obtained after 24 h was maintained or increased over time.
Details
- Title: Subtitle
- Effect of Antioxidants on the Dentin Interface Bond Stability of Adhesives Exposed to Hydrolytic Degradation
- Creators
- Valeria B. Gotti - Univ Estadual Campinas, Piracicaba Dent Sch, Div Dent Mat, BR-13414903 Piracicaba, SP, BrazilVictor P. Feitosa - Univ Fed Ceara, Sch Dent, Dept Restorat Dent, Fortaleza, Ceara, BrazilSalvatore Sauro - Univ CEU Cardenal Herrera, Fac Odontol, Dent Biomat & Minimally Invas Dent, Valencia, SpainLourenco Correr-Sobrinho - Univ Estadual Campinas, Piracicaba Dent Sch, Div Dent Mat, BR-13414903 Piracicaba, SP, BrazilFernanda B. Leal - Federal ReserveJeffrey W. Stansbury - Univ Colorado, Sch Dent Med, Dept Craniofacial Biol, Aurora, CO USAAmRico B. Correr - Univ Estadual Campinas, Piracicaba Dent Sch, Div Dent Mat, BR-13414903 Piracicaba, SP, Brazil
- Resource Type
- Journal article
- Publication Details
- The journal of adhesive dentistry, Vol.17(1), pp.35-44
- Publisher
- Quintessence Publishing Co Inc
- DOI
- 10.3290/j.jad.a33515
- PMID
- 25625137
- ISSN
- 1461-5185
- eISSN
- 1757-9988
- Number of pages
- 10
- Grant note
- 3110/2010 / Capes Brazil; Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Language
- English
- Date published
- 02/2015
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984655343002771
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