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<p>The aim of this study was to evaluate changes in tooth color and the bond strength of resin to enamel and dentin after exposure to electronic cigarette (e-cigarette) vapor in an in vitro vaping model, as well as to analyze the chemical composition of the materials present in the vapor. A device with a vacuum pump simulated vaping. Eighty dental slabs (40 dentin and 40 enamel) and were randomly divided into two groups. Half received e-cigarette exposure, and the other remained without vaping (control). Color changes were measured using a spectrophotometer (CIELAB). Composite cylinders were built on substrates using etch-and-rinse or self-etch strategies and subjected to loading tests. Gas chromatography-mass spectrometry (GC–MS) analyzed the organic compound of the e-liquid, while inductively coupled plasma mass spectrometry (ICP-MS) assessed the metal content. Statistical analysis was conducted using MANOVA and ANOVA (<i>α</i> = 0.05), and CIEDE2000 formula. E-cigarette exposure darkened (L*) and yellowed (b*) enamel and dentin. Bond strength in dentin decreased for both adhesion strategies, and in enamel using the etch-and-rinse adhesive. GC–MS identified 72 different volatile compounds, whereas ICP-MS detected 26 distinct metals. Among metals, eight exceeded the WHO (World Health Organization) tolerance limits. E-cigarette exposure altered the color of substrates and reduced resin bond strength in dentin for both adhesives, and in enamel restored with the etch-and-rinse technique. E-liquid had toxic organic compounds and metals. Exposure to e-cigarette can cause tooth discoloration and weaken bonding to dental tissues. Toxic volatile organic and metallic compounds present in vapor can adversely affect oral health.</p>

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Experimental in vitro simulation of the impact of e-cigarette vapors on enamel and dentin

  • 期刊论文

  • 发表日期：

    2025年10月2日

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  • Davi Ariel Nobuo Bepu,
  • Alice Corrêa Silva-Sousa,
  • Fabiane Carneiro Lopes-Olhê,
  • Débora Fernandes Costa Guedes,
  • André Luís Faria-E-Silva,
  • Jardel Francisco Mazzi-Chaves,
  • Manoel Damião Sousa-Neto,
  • Aline Evangelista Souza-Gabriel

摘要

The aim of this study was to evaluate changes in tooth color and the bond strength of resin to enamel and dentin after exposure to electronic cigarette (e-cigarette) vapor in an in vitro vaping model, as well as to analyze the chemical composition of the materials present in the vapor. A device with a vacuum pump simulated vaping. Eighty dental slabs (40 dentin and 40 enamel) and were randomly divided into two groups. Half received e-cigarette exposure, and the other remained without vaping (control). Color changes were measured using a spectrophotometer (CIELAB). Composite cylinders were built on substrates using etch-and-rinse or self-etch strategies and subjected to loading tests. Gas chromatography-mass spectrometry (GC–MS) analyzed the organic compound of the e-liquid, while inductively coupled plasma mass spectrometry (ICP-MS) assessed the metal content. Statistical analysis was conducted using MANOVA and ANOVA (α = 0.05), and CIEDE2000 formula. E-cigarette exposure darkened (L*) and yellowed (b*) enamel and dentin. Bond strength in dentin decreased for both adhesion strategies, and in enamel using the etch-and-rinse adhesive. GC–MS identified 72 different volatile compounds, whereas ICP-MS detected 26 distinct metals. Among metals, eight exceeded the WHO (World Health Organization) tolerance limits. E-cigarette exposure altered the color of substrates and reduced resin bond strength in dentin for both adhesives, and in enamel restored with the etch-and-rinse technique. E-liquid had toxic organic compounds and metals. Exposure to e-cigarette can cause tooth discoloration and weaken bonding to dental tissues. Toxic volatile organic and metallic compounds present in vapor can adversely affect oral health.