Effect of Electronic Cigarettes Smoking on Color Stability of CAD/CAM Acrylic Resin: in Vitro Study

Résumé

Abstract Background: The most common electronic nicotine delivery system is electronic cigarettes. Most electronic cigarettes consist of a battery, and an electric heater used to aerosolize a liquid to produce vapor that the user inhales. Smokers who have used electronic cigarettes to quit smoking, raising questions about the benefits and hazardous effects of using it. Polymethyl methacrylate contacts with a variety of foods and beverages of different temperatures, as a result, it is prone to absorbing a variety of pollutants, altering its physical structure and appearance. The aim of this study was to investigate the effects of electronic cigarette smoking on the color stability of acrylic resin.Material and methods: This study was in vitro study in which sixty specimens of CAD/CAM acrylic resin were exposed to aerosols that were flavored and non-flavored with nicotine content (0 mg, 6 mg, and 12 mg). A portable suction machine was modified to receive specimens and simulate smoking in vivo. Each specimen was exposed to 20 cycles of aerosol emitted by a single ECIG device using the smoking chamber. Each cycle consisted of 10 puffs with a puff duration of 4 seconds and an inter puff interval of 20 seconds totaling 3.6 minutes for each cycle. Color measurement was performed on the specimens before and after exposure to ECIG aerosol using a calibrated spectrophotometer.Results: Specimens exposed to flavorless 0 mg. nicotine aerosol showed the lowest delta E value 2.39 (±0.16) , while Specimens exposed to flavored 12 mg. nicotine showed the highest values 4.14 (±0.19). No significant difference in color change found between groups exposed to flavorless e-liquid, while a significant difference found between flavored 0 mg. nicotine and 12 mg. nicotine groups (P = 0.002).Also, a significant difference found between flavored 6 mg. nicotine and 12 mg. nicotine groups (P = 0.002). According to Two Way ANOVA, both flavor and nicotine contents have a significant effect on color change (P <0.0001).Conclusion: Exposure to flavored and non-flavored electronic cigarettes aerosol of different nicotine concentrations changed the color of acrylic resin. Both flavor and nicotine contents have a significant effect on color change.

Citer ce document

Accès au document

Ce document est hébergé sur son dépôt institutionnel d'origine.

Auteur(s)

Statistiques

Consultations : 1

Téléchargements : 0