Abstract
The mechanical properties of a resin composite restoration can be degraded by liquids in the oral
environment, including food and drinks such as fruits. The aim of this study was to compare the
flexural strength of two different microhybrid composites after immersion in distilled water and citric
acid solutions with concentrations of commonly consumed citrus fruits: mandarin orange and lemon.
Forty G-aenial PosteriorTM and forty Filtek Z250TM 3-point bend test bar specimens are divided into
four groups, 1 day of dry storage, 30 days of immersion in distilled water, 30 days of immersion in
0.06 mol/L citric acid (mandarin orange concentration), and 30 days of immersion in 0.30 mol/L citric
acid (lemon concentration). Afterwards, the flexural strength of the specimens are measured with a
Shimadzu, Japan AGS-X Universal Testing Machine. The Data was analyzed using a One-Way
ANOVA statistical test and Tamhane Post Hoc. Statistical analysis shows a significant reduction in the
flexural strength of G-aenial PosteriorTM. Filtek Z250TM composite also showed a significant reduction
in flexural strength from a value of 138.72 ± 6.26 MPa after 1 dry storage, to 93.58 ± 7.69 MPa after
immersion in distilled water, 96.39 ± 3.15 MPa after immersion in 0.06 mol/L citric acid, and 96.14 ±
5.39 MPa after immersion in 0.30 mol/L citric acid. A significant difference in flexural strength is
shown between the two microhybrid materials, in each of the treatment groups, with a significantly
higher value for Filtek Z250TM. It is concluded that immersion in water and citric acid has a significant
effect on the flexural strength of the microhybrid composites.
environment, including food and drinks such as fruits. The aim of this study was to compare the
flexural strength of two different microhybrid composites after immersion in distilled water and citric
acid solutions with concentrations of commonly consumed citrus fruits: mandarin orange and lemon.
Forty G-aenial PosteriorTM and forty Filtek Z250TM 3-point bend test bar specimens are divided into
four groups, 1 day of dry storage, 30 days of immersion in distilled water, 30 days of immersion in
0.06 mol/L citric acid (mandarin orange concentration), and 30 days of immersion in 0.30 mol/L citric
acid (lemon concentration). Afterwards, the flexural strength of the specimens are measured with a
Shimadzu, Japan AGS-X Universal Testing Machine. The Data was analyzed using a One-Way
ANOVA statistical test and Tamhane Post Hoc. Statistical analysis shows a significant reduction in the
flexural strength of G-aenial PosteriorTM. Filtek Z250TM composite also showed a significant reduction
in flexural strength from a value of 138.72 ± 6.26 MPa after 1 dry storage, to 93.58 ± 7.69 MPa after
immersion in distilled water, 96.39 ± 3.15 MPa after immersion in 0.06 mol/L citric acid, and 96.14 ±
5.39 MPa after immersion in 0.30 mol/L citric acid. A significant difference in flexural strength is
shown between the two microhybrid materials, in each of the treatment groups, with a significantly
higher value for Filtek Z250TM. It is concluded that immersion in water and citric acid has a significant
effect on the flexural strength of the microhybrid composites.
| Original language | English |
|---|---|
| Pages (from-to) | 46-52 |
| Journal | Cakradonya Dental Journal |
| Volume | 15 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2023 |
Keywords
- Microhybrid composite resin
- flexural strength
- immersion
- distilled water
- citric acid