Abstract
Physicochemical properties of dental adhesives doped with zinc compounds
Dental materials, Vol.34(Supplement 1), pp.e91-e91
2018
DOI: 10.1016/j.dental.2018.08.193
Abstract
Purpose/aim: To evaluate the influence of addition of different concentrations of zinc chloride (ZnCl2) and zinc oxide (ZnO) on the degree of conversion (DC), flexural strength (FS) and modulus of elasticity (ME) of dental adhesives.
Materials and methods: Two etch-and-rinse dental adhesives [Adper Single Bond 2 (SB) and Ambar (AM)] were zinc-doped by mixing them with 5, 10, or 20 wt% of ZnO powder, or with 1, 2, or 4 wt% ZnCl2. The DC of the resulting blends was measured using FT-IR spectroscopy (n = 5), whereas FS and ME were determined by three-point bending test of bar-shaped specimens (n = 10). Data were subjected to one-way ANOVA and Student–Newman–Keuls post hoc test (α = 0.05).
Results: For both SB-blends and AM-blends, the higher the concentration of ZnCl2 the lower the DC and flexural properties, except for 4% ZnCl2-doped AM-blend that presented FS similar than AM-control, and ME statistically higher than AM-control. Different concentrations of ZnO had no effect or very slight reduction of DC in AM-blends and SB-blends, respectively. When 5% and 10% ZnO were incorporated into SB, it was observed higher FS and ME values than SB-control and 20% ZnO-doped SB-blend. For AM-blends, there was reduction of flexural properties with the addition of 10 and 20% ZnO, whereas 5% ZnO-doped AM-blend presented similar FS and ME than AM-control.
Conclusions: Some physicochemical properties were jeopardized when doping simplified dental adhesives with ZnCl2. Incorporation of 5% ZnO into SB and AM did not negatively affect DC, FS, and ME.
Details
- Title: Subtitle
- Physicochemical properties of dental adhesives doped with zinc compounds
- Creators
- C. Pomacóndor-Hernández - University of LimaA. Catelan - Universidade do Oeste PaulistaV.P. Feitosa - Paulo Picanço School of DentistryS. Consani - Universidade Estadual de Campinas (UNICAMP)
- Resource Type
- Abstract
- Publication Details
- Dental materials, Vol.34(Supplement 1), pp.e91-e91
- Publisher
- Elsevier Inc
- DOI
- 10.1016/j.dental.2018.08.193
- ISSN
- 0109-5641
- eISSN
- 1879-0097
- Language
- English
- Date published
- 2018
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984656548902771
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