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Related Experiment Video

Updated: Jun 11, 2026

Isolation of Mouse Respiratory Epithelial Cells and Exposure to Experimental Cigarette Smoke at Air Liquid Interface
10:47

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Published on: February 21, 2011

Cigarette smoke affects bonding to dentin.

Junio S Almeida e Silva1, Edson Medeiro de Araujo, Elito Araujo

  • 1Department of Operative Dentistry, Federal University of Santa Catarina, Florianopolis, Brazil.

General Dentistry
|July 2, 2010
PubMed
Summary
This summary is machine-generated.

Cigarette smoke contamination significantly weakens the microtensile bond strength (muTBS) of composite resin to dentin. This study found lower bond strength in teeth exposed to simulated smoking, highlighting a risk factor for dental restorations.

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Published on: October 22, 2020

Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Restorative Dentistry

Background:

  • Dental composite resins are widely used for restorations.
  • Maintaining the integrity of the bond between composite resin and dentin is crucial for restoration longevity.
  • Factors like oral contaminants can potentially compromise this bond strength.

Purpose of the Study:

  • To investigate the effect of cigarette smoke contamination on the microtensile bond strength (muTBS) of composite resin to dentin.
  • To analyze the morphological changes on dentin surfaces after exposure to cigarette smoke.

Main Methods:

  • An in vitro study using human third molars.
  • Microtensile bond strength (muTBS) testing was performed on prepared dentin specimens.
  • Scanning electron microscopy (SEM) was used for surface analysis.
  • Specimens were divided into a control group (toothbrushing simulation) and an experimental group (toothbrushing and smoking simulation).

Main Results:

  • The experimental group exposed to cigarette smoke simulation showed significantly lower muTBS (49.58 MPa) compared to the control group (58.48 MPa).
  • SEM analysis revealed the presence of contaminants on the dentin surfaces of the specimens exposed to cigarette smoke.
  • A clear reduction in bond strength was observed in the presence of cigarette smoke contaminants.

Conclusions:

  • Contamination by cigarette smoke negatively impacts the bond strength between dentin and composite resin.
  • Cigarette smoke can introduce contaminants that compromise the adhesive interface in dental restorations.
  • Clinicians should consider the potential adverse effects of smoking on the durability of composite resin restorations.