The effect of mouthrinses on salivary sorption, solubility and surface degradation of a nanofilled and a hybrid resin composite.
This in vitro study evaluated the effect of mouth rinses on salivary sorption (Sp), solubility (Sl) and surface degradation of a nanofilled (Z350) and hybrid (P60) resin composite. Specimens (6 mm in diameter and 1 mm thick) of a nanofilled and hybrid resin composite were immersed in artificial saliva at 37 degrees C for seven days. Twice a day, the samples (n = 5) were immersed in 20 ml of three mouth rinses: Listerine, Plax Mint and Plax. A control group was maintained in artificial saliva. Sp and Sl were evaluated based on ISO 4049:2000(E) and surface degradation by scanning electron microscopy-SEM. The degree of conversion (DC%) of resin composites was obtained by using an FT-IR spectrometer equipped with an attenuated total reflectance crystal (ATR). The data were analyzed using the Student's t-test, ANOVA and Tukey test for multiple comparisons. No significant difference in DC% was found between the two resin composites (p < 0.05). The highest sorption rate was presented by the nanofilled composite exposed to Listerine (p < 0.05). The hybrid composite in the control group (artificial saliva) and Plax presented the lowest sorption (p < 0.05). The highest solubility was presented by the two resin composites exposed to Listerine (p < 0.05). SEM analysis showed that mouth rinses produced more severe surface degradation in the nanofilled composite.
Almeida
Giselle Soares
GS
Department of Restorative Dentistry, School of Dentistry, Federal Fluminense University, Campus Valonguinho, Niterói, RJ, Brazil.
Poskus
Laiza Tatiana
LT
Guimarães
José Guilherme Antunes
JG
da Silva
Eduardo Moreira
EM
D000042:Absorption; D000327:Adsorption; D000891:Anti-Infective Agents, Local / Q000737:chemistry; D001565:Benzoates / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D004338:Drug Combinations; D006801:Humans; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D009067:Mouthwashes / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D012459:Salicylates / Q000737:chemistry; D012464:Saliva, Artificial / Q000737:chemistry*; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry; D012995:Solubility; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013696:Temperature; D013729:Terpenes / Q000737:chemistry; D013997:Time Factors; D014260:Triclosan / Q000737:chemistry
D000891:Anti-Infective Agents, Local; D001565:Benzoates; D003188:Composite Resins; D003764:Dental Materials; D004338:Drug Combinations; C438835:Filtek P60 Composite Resin; D009067:Mouthwashes; C070868:Plax; D011108:Polymers; D012459:Salicylates; D012464:Saliva, Artificial; D013729:Terpenes; C533204:filtek Z350; D012967:Sodium Dodecyl Sulfate; D014260:Triclosan; C057473:Listerine