Effect of whitening toothpastes containing activated charcoal, abrasive particles, or hydrogen peroxide on the color of aged microhybrid composite

Abstract

Background: This study aimed to assess the effect of different whitening toothpastes containing activated charcoal, abrasive particles or hydrogen peroxide on the color of aged microhybrid composite. Materials and Methods: In this in vitro, experimental study, 45 composite discs (2 mm × 7 mm) were fabricated of a microhybrid composite. They underwent accelerated artificial aging for 300 h, corresponding to 1 year of clinical service. The composites were then randomly divided into five groups (n = 9). One group served as the control and underwent tooth brushing with distilled water. The remaining four groups underwent tooth brushing with Colgate Total whitening (Gt), Colgate Optic White (Go), Perfect White Black (Gp) and Bencer (Gb) toothpastes in a brushing machine The International Commission on Illumination values (Lm, am, bm) were determined using a spectrophotometer. Color change (ΔE) calculated based on this formula: ΔEm= ([ΔLm] 2 + [Δam] 2 + [Δbm] 2)½. The differences were defined by ΔE1 (after aging-baseline),ΔE2 (after brushing-after aging) and ΔE3 (after brushing-base line). ΔE1 were evaluated to ensure that color mismatch had occurred (ΔE1 > 5.5). Difference in (L, a, b) parameters after aging and after tooth brushing in each group, color parameter changes (ΔL2, Δa2, Δb2, ΔL3, Δa3, Δb3) and ΔE2 and ΔE3 were analyzed and compared using Wilcoxon test and independent sample median test at P = 0.05 level of significance. Results: The color parameter changes, ΔE3 and Δ E2 were not significantly different among the five groups (P > 0.05). In Gp and Gb charcoal a*, b*, and L* after tooth brushing (P < 0.05). In Colgate Optic group, the a* parameter significantly decreased while the L* parameter significantly increased (P < 0.05). Conclusion: The results showed that there is no significant difference in the color change of Spectrum composite following tooth brushing with different whitening toothpastes for two weeks. It should be noted that Δ E3 reached to <3.3 only in charcoal whitening toothpastes.

Remineralization, color stability and surface roughness of tooth enamel brushed with activated charcoal‐based products

“…ACPs can promote tooth color change by removing extrinsic stains but also, by adsorbing extrinsic stains 7 and chromophores from the enamel surface 34 . In the present study, the samples were not stained because we wanted to evaluate if the ACPs produced, by themselves, color alteration by abrasion or deposition of particles 7 .…”

“…5 ACPs can promote tooth color change by removing extrinsic stains but also, by adsorbing extrinsic stains 7 and chromophores from the enamel surface. 34 In the present study, the samples were not stained because we wanted to evaluate if the ACPs produced, by themselves, color alteration by abrasion or deposition of particles. 7 However, an extrinsic staining procedure could certainly have revealed different outcomes, which would allow have allowed us to extrapolate our findings to a real situation.…”

Effects of Bio-Aging on Mechanical Properties and Microbial Behavior of Different Resin Composites

“…The color of restorations and their stability after long-term use are important factors in the selection of dental materials. Most previous studies on the color changes of restorations used water aging models without considering the aging effects from microbes [37,38]. However, it can be speculated that the accumulation of organic acids, enzymes and other microbial metabolites can affect the color performance of restorations.…”

The Effect of Charcoal-Based Dentifrice and Conventional Whitening Toothpaste on the Color Stability and Surface Roughness of Composite Resin: A Systematic Review of In Vitro Studies

“…Within the domain of dental restorations, CR assumes a central role by seamlessly conforming to the shape and bonding requirements of fractured or decayed teeth, thereby achieving a harmonious integration of function and esthetics. However, the success of composite resin (CR) restorations extends beyond immediate aesthetic considerations, encompassing nuanced factors such as color stability (CS) and the enduring maintenance of a smooth surface texture over time [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. CS, a critical facet in the longevity of dental restorations, pertains to a material’s resistance to color alterations induced by diverse factors, including environmental exposure, dietary habits, and oral hygiene practices [ 13 ].…”

“…However, as the utilization of CbDs continues to escalate, legitimate concerns have surfaced regarding their potential impact on the physical and visual characteristics of CR. The nuanced tapestry of experimental investigations [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 11 , 12 ] seeking to evaluate the influence of CbDs on the SR and CS of CR has woven a complex narrative, with conflicting interpretations. Torso et al [ 8 ] suggested that chronic exposure of CR to CbDs significantly heightens the risk of undesirable color changes and surface wear in contrast to conventional whitening toothpastes (CWTs).…”