Influence of surface sealant on the translucency of composite resin: effect of immersion time and immersion media

Abstract

This study evaluated the effect of surface sealant on the translucency of composite resin immersed in different solutions. The study involved the following materials: Charisma, Fortify and coffee, Coca-Cola ® , tea and artificial saliva as solutions. Sixty-four specimens (n = 8) were manufactured and immersed in artificial saliva at 37 ± 1 °C. Samples were immersed in the solutions for three times a day and re-immersed in artificial saliva until the translucency readings. The measurements were carried out at nine times: T1 -24 hours after specimen preparation, T2 -24 hours after immersion in the solutions, T3 -48 hours and T4 to T9 -7, 14, 21, 30, 60 and 90 days, respectively, after immersion. The translucency values were measured using a JOUAN device. The results were subjected to ANOVA and Tukey's test at 5%. The surface sealant was not able to protect the composite resin against staining, the coffee showed the strongest staining action, followed by tea and regarding immersion time, a significant alteration was noted in the translucency of composite resin after 21 days.

Chemical and morphological features of dental composite resin: Influence of light curing units and immersion media

“…The bottom surface of specimen was identified with a scalpel blade. There was no polishing over the specimen surface because it was considered that the major superficial smoothness was obtained with the acetate strip (Bagheri et al, 2007a;Garcia et al, 2008).…”

“…These procedures were repeated for 60 days (Garcia et al, 2008). Scanning Electron Microscopy and Microanalysis (SEM and EDX) After 60 days of immersion, specimens were prepared for SEM analysis.…”

“…The specimens were immersed in each solution for five minutes under agitation (CT-155, Cientec, Piracicaba, SP, Brazil), t.i.d., with intervals of 4 h. For the control group (specimens kept in artificial saliva), the specimens were stored at 378C, and the artificial saliva was changed daily. These procedures were repeated for 60 days (Garcia et al, 2008). Scanning Electron Microscopy and Microanalysis (SEM and EDX) After 60 days of immersion, specimens were prepared for SEM analysis.…”

Effect of surface sealant on the color stability of composite resin restorations

“…Sealants have also been applied over composite restorations to fill the surface irregularities in an endeavor to improve the surface luster, marginal sealing and wear resistance (9)(10)(11)(12)(13). The use of surface sealants could also affect the absorption of pigments and color stability of composite restorations; however, contrasting findings are reported in the literature (14,15).…”

Chemical and morphological features of nanofilled composite resin: Influence of finishing and polishing procedures and fluoride solutions

“…Surface staining is related to intrinsic factors such as the material chemical composition, and extrinsic factors such as poor oral hygiene (Garcia et al,2008), the routine use of fluoridated mouthwash solutions (Garcia et al,2002; Santos et al,2003), pigmented food intake (Garcia et al,2002,2008; Luce and Campbell,1988; Santos et al,2003), and the lack of finishing and polishing procedures by the Surgeon‐Dentist (Reis et al,2003; Yap et al,1998).…”