title: Oral health and human papillomavirus-associated head and neck squamous cell carcinoma.
abstract: BACKGROUND
  Indicators of poor oral health, including smoking, have been associated with increased risk of head and neck squamous cell carcinoma, especially oropharyngeal squamous cell carcinoma (OPSCC), yet few studies have examined whether this association is modified by human papillomavirus (HPV) status.
  
  
  METHODS
  Data from interviews and tumor HPV status from a large population-based case-control study, the Carolina Head and Neck Cancer Study (CHANCE), were used to estimate the association between oral health indicators and smoking among 102 HPV-positive patients and 145 HPV-negative patients with OPSCC and 1396 controls. HPV status was determined by p16INK4a (p16) immunohistochemistry. Unconditional, multinomial logistic regression was used to estimate odds ratios (ORs) for all oral health indictors adjusting for important covariates.
  
  
  RESULTS
  Routine dental examinations were associated with a decreased risk of both HPV-negative OPSCC (OR, 0.52; 95% confidence interval [CI], 0.35-0.76) and HPV-positive OPSCC (OR, 0.55; 95% CI, 0.36-.86). Tooth mobility (a proxy for periodontal disease) increased the risk of HPV-negative disease (OR, 1.70; 95% CI, 1.18-2.43) slightly more than the risk for HPV-positive disease (OR, 1.45; 95% CI, 0.95-2.20). Ten or more pack-years of cigarette smoking were strongly associated with an increased risk of HPV-negative OPSCC (OR, 4.26; 95% CI, 2.85-6.37) and were associated less with an increased risk of HPV-positive OPSCC (OR, 1.62; 95% CI, 1.10-2.38).
  
  
  CONCLUSIONS
  Although HPV-positive and HPV-negative HNSCC differ significantly with respect to etiology and tumorigenesis, the current findings suggest a similar pattern of association between poor oral health, frequency of dental examinations, and both HPV-positive and HPV-negative OPSCC. Future research is required to elucidate interactions between poor oral health, tobacco use, and HPV in the development of OPSCC. Cancer 2017;71-80. © 2016 American Cancer Society.
authors: Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
authors: Angela L
authors: AL
authors: Mazul
authors: Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina.
authors: James M
authors: JM
authors: Taylor
authors: Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.|Department of Pediatric Dentistry, University of North Carolina at Chapel Hill School of Dentistry, Chapel Hill, North Carolina.
authors: Kimon
authors: K
authors: Divaris
authors: Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina.
authors: Mark C
authors: MC
authors: Weissler
authors: International Agency for Research on Cancer, Lyon, France.
authors: Paul
authors: P
authors: Brennan
authors: International Agency for Research on Cancer, Lyon, France.
authors: Devasena
authors: D
authors: Anantharaman
authors: International Agency for Research on Cancer, Lyon, France.
authors: Behnoush
authors: B
authors: Abedi-Ardekani
authors: Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.|Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
authors: Andrew F
authors: AF
authors: Olshan
authors: Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.|Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina.|Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
authors: Jose P
authors: JP
authors: Zevallos
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000209:etiology* / Q000821:virology*; D016022:Case-Control Studies; D005260:Female; D006258:Head and Neck Neoplasms / Q000209:etiology* / Q000821:virology*; D006801:Humans; D007150:Immunohistochemistry / Q000379:methods; D008297:Male; D008875:Middle Aged; D009909:Oral Health; D009959:Oropharyngeal Neoplasms / Q000209:etiology / Q000821:virology; D027383:Papillomaviridae / Q000472:pathogenicity; D030361:Papillomavirus Infections / Q000150:complications* / Q000821:virology; D012907:Smoking / Q000009:adverse effects; D000077195:Squamous Cell Carcinoma of Head and Neck
keywords: dental visits; head and neck cancer; human papillomavirus; oral health; oropharyngeal cancer; periodontal disease; smoking