Do collagen cross-linkers improve dentin’s bonding receptiveness?
| Autor: | J. De Munck, Guilherme Carpena Lopes, Ana Paula Almeida Ayres, C. Parise Gré, R. Seseogullari-Dirihan, Arzu Tezvergil-Mutluay, K.L. Van Landuyt, Bart Van Meerbeek, D. Pedrollo Lise |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Surface Properties Riboflavin Composite number OptiBond FL 02 engineering and technology In Vitro Techniques Composite Resins Random Allocation 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Polymethacrylic Acids stomatognathic system Materials Testing Dentin medicine Humans Bisphenol A-Glycidyl Methacrylate Proanthocyanidins General Materials Science Composite material ta216 General Dentistry ta313 Dental Bonding 030206 dentistry 021001 nanoscience & nanotechnology Molar Resin Cements Clearfil SE Bond Cross-Linking Reagents medicine.anatomical_structure chemistry Glutaral Mechanics of Materials Dentin-Bonding Agents Methacrylates Glutaraldehyde Adhesive 0210 nano-technology |
| Zdroj: | Dental Materials. 34:1679-1689 |
| ISSN: | 0109-5641 |
| DOI: | 10.1016/j.dental.2018.08.303 |
| Popis: | Dentin biomodification using collagen cross-linkers has been proposed as one of the strategies to improve bond durability of adhesives to dentin. However, literature is not very consistent regarding their benefit, in particular when cross-linkers are applied in clinically realistic application times. This study investigated the effect of three cross-linkers on the mini-interfacial fracture toughness (mini-iFT) of four adhesives bonded to dentin following either etchrinse (ER) or self-etch (SE) modes.60 molars were randomly divided in accordance with the three variables: cross-linker, adhesive and bonding mode (n=5). The cross-linkers glutaraldehyde (5wt%; GA), proanthocyanidin (6.5wt%; PA), or UVA-activated riboflavin (0.5wt%; RB), and distilled water (control) were applied on dentin for 60s after acid-etching (ER) or before self-etching (SE). The 3-step ER adhesive (3ERa) OptiBond FL (Kerr), the 2-step SE adhesive (2SEa) Clearfil SE Bond 2 (Kuraray Noritake) and the universal adhesives G-Premio Bond (GC) and PrimeBond Active (Dentsply), the latter two employed in both ER and SE modes, were applied following the respective manufacturer's instructions. Composite buildups (8×8×8mm) were made using Filtek Supreme XTE (3M) prior to 1-week storage in artificial saliva. After the teeth were sectioned into mini-specimens (1.5×2.0×18mm), a single notch was prepared at the adhesive-dentin interface. Half of the specimens were immediately loaded until failure by 4-point bending to determine the mini-iFT, while the remaining specimen set was tested upon 6-month aging. Data were statistically analyzed with a linear model (p0.05).No significant decrease in mini-iFT was noted only for PA (p0.05), while the mini-iFT decreased for both other cross-linkers and in quite a similar way as when solely water (Wa) was applied.The cross-linker proanthocyanidin (PA) applied in clinically relevant conditions was able to maintain a stable mini-iFT after 6-month aging. The incorporation of UVA-activated riboflavin (RB) and glutaraldehyde (GA) in the dentin-bonding protocol appeared not effective to improve the stability of adhesive-dentin interfaces. |
| Databáze: | OpenAIRE |
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