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Oral Oncol. 2014 Jun;50(6):616-25. doi: 10.1016/j.oraloncology.2014.03.001. Epub 2014 Mar 27.

Oral health, dental care and mouthwash associated with upper aerodigestive tract cancer risk in Europe: the ARCAGE study.

Author information

  • 1Department of Epidemiological Methods and Etiologic Research, Leibniz Institute for Prevention Research and Epidemiology - BIPS, Bremen, Germany; Institute for Statistics, Faculty of Mathematics and Computer Science, University of Bremen, Bremen, Germany. Electronic address: ahrens@bips.uni-bremen.de.
  • 2Department of Biometry and Data Management, Leibniz Institute for Prevention Research and Epidemiology - BIPS, Bremen, Germany.
  • 3Estonian Genome Center, University of Tartu, Tartu, Estonia.
  • 4Department of Hygiene, Epidemiology and Medical Statistics, University of Athens Medical School, Athens, Greece.
  • 5Faculty of Health Professions, Athens Technological Educational Institute, Athens, Greece.
  • 6Geneva Cancer Registry, Institute of Social and Preventive Medicine, Geneva Cancer Registry, IMSP, University of Geneva, Geneva, Switzerland.
  • 7Institute of Hygiene and Epidemiology, First Faculty of Medicine, Charles University of Prague, Prague, Czech Republic.
  • 8Department of Medical Sciences, Cancer Epidemiology Unit, CeRMS and CPO Piemonte University of Turin, Turin, Italy.
  • 9Cancer Registry of Norway, Oslo, Norway.
  • 10Catalan Institute of Oncology (ICO), CIBERESP, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain; Catalan Institute of Oncology (ICO), IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain.
  • 11Catalan Institute of Oncology (ICO), CIBERESP, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain.
  • 12School of Medicine and Dentistry, University of Aberdeen, Aberdeen, United Kingdom.
  • 13Department of Family and Preventive Medicine, Division of Public Health, School of Medicine, University of Utah, Utah, USA.
  • 14Aviano Cancer Centre, Aviano, Italy.
  • 15General Hospital of Pordenone, Pordenone, Italy.
  • 16National Heart and Lung Institute, Imperial College London, London, United Kingdom; Laboratory of Public Health and Population Studies, Department of Molecular Medicine, University of Padova, Padova, Italy.
  • 17Laboratory of Public Health and Population Studies, Department of Molecular Medicine, University of Padova, Padova, Italy.
  • 18School of Dental Sciences, University of Newcastle, Newcastle, United Kingdom.
  • 19Centre for Epidemiology and Biostatistics, University of Leeds, Leeds, United Kingdom.
  • 20Glasgow Dental School, College of Medical, Veterinary and Life Sciences, College of Medicine, University of Glasgow, Glasgow, United Kingdom.
  • 21Croatian National Cancer Registry, Zagreb, Croatia.
  • 22Trinity College School of Dental Science, Dublin, Ireland.
  • 23Trinity College School of Dental Science, Dublin, Ireland; School of Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland.
  • 24Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia; Estonian Genome Center, University of Tartu, Tartu, Estonia; Center of Translational Genomics, University of Tartu, Tartu, Estonia.
  • 25International Agency for Research on Cancer (IARC), Lyon, France; Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University of Mainz, Mainz, Germany.
  • 26Department of Family and Preventive Medicine, Division of Public Health, School of Medicine, University of Utah, Utah, USA; Huntsman Cancer Institute, Salt Lake City, Utah, USA.
  • 27International Agency for Research on Cancer (IARC), Lyon, France. Electronic address: brennan@iarc.fr.

Abstract

OBJECTIVE:

We aimed to assess the association of oral health (OH), dental care (DC) and mouthwash with upper-aerodigestive tract (UADT) cancer risk, and to examine the extent that enzymes involved in the metabolism of alcohol modify the effect of mouthwash.

MATERIALS AND METHODS:

The study included 1963 patients with incident cancer of the oral cavity, oropharynx, hypopharynx, larynx or esophagus and 1993 controls. Subjects were interviewed about their oral health and dental care behaviors (which were converted to scores of OH and DC respectively), as well as smoking, alcohol drinking, diet, occupations, medical conditions and socio-economic status. Blood samples were taken for genetic analyses. Mouthwash use was analyzed in relation to the presence of polymorphisms of alcohol-metabolizing genes known to be associated with UADT. Adjusted odds ratios (ORs) and 95%-confidence intervals [CI] were estimated with multiple logistic regression models adjusting for multiple confounders.

RESULTS:

Fully adjusted ORs of low versus high scores of DC and OH were 2.36[CI=1.51-3.67] and 2.22[CI=1.45-3.41], respectively, for all UADT sites combined. The OR for frequent use of mouthwash use (3 or more times/day) was 3.23[CI=1.68-6.19]. The OR for the rare variant ADH7 (coding for fast ethanol metabolism) was lower in mouthwash-users (OR=0.53[CI=0.35-0.81]) as compared to never-users (OR=0.97[CI=0.73-1.29]) indicating effect modification (pheterogeneity=0.065) while no relevant differences were observed between users and non-users for the variant alleles of ADH1B, ADH1C or ALDH2.

CONCLUSIONS:

Poor OH and DC seem to be independent risk factors for UADT because corresponding risk estimates remain substantially elevated after detailed adjustment for multiple confounders. Whether mouthwash use may entail some risk through the alcohol content in most formulations on the market remains to be fully clarified.

Copyright © 2014 Elsevier Ltd. All rights reserved.

KEYWORDS:

Genetic polymorphisms; Head and neck neoplasms; Oral health; Oral hygiene

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PMID:
24680035
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