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Cancer Prev Res (Phila). 2021 Jul;14(7):709-718. doi: 10.1158/1940-6207.CAPR-20-0577. Epub 2021 Mar 17.

Oral Health and Risk of Upper Gastrointestinal Cancers in a Large Prospective Study from a High-risk Region: Golestan Cohort Study.

Cancer prevention research (Philadelphia, Pa.)

Yukiko Yano, Christian C Abnet, Hossein Poustchi, Gholamreza Roshandel, Akram Pourshams, Farhad Islami, Masoud Khoshnia, Taghi Amiriani, Alireza Norouzi, Farin Kamangar, Paolo Boffetta, Paul Brennan, Sanford M Dawsey, Emily Vogtmann, Reza Malekzadeh, Arash Etemadi

Affiliations

  1. Division of Cancer Epidemiology and Genetics, NCI, NIH, Bethesda, Maryland. [email protected] [email protected].
  2. Division of Cancer Epidemiology and Genetics, NCI, NIH, Bethesda, Maryland.
  3. Liver and Pancreatobiliary Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
  4. Digestive Oncology Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
  5. Golestan Research Center of Gastroenterology and Hepatology, Golestan University of Medical Sciences, Gorgan, Iran.
  6. Data Science Program, American Cancer Society, Atlanta, Georgia.
  7. Department of Biology, School of Computer, Mathematical, and Natural Sciences, Morgan State University, Baltimore, Maryland.
  8. Stony Brook Cancer Center, Stony Brook University, Stony Brook, New York.
  9. Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy.
  10. Section of Genetics, International Agency for Research on Cancer, World Health Organization, Lyon, France.

PMID: 33731409 PMCID: PMC8295188 DOI: 10.1158/1940-6207.CAPR-20-0577

Abstract

Tooth loss and periodontal disease have been associated with several cancers, and poor oral health may be an important risk factor for upper gastrointestinal (UGI, i.e., esophageal and gastric) cancers. We assessed the relationship between oral health and UGI cancers using a large prospective study of over 50,000 adults living in Golestan Province, Iran, a high-incidence area for these cancers. Hazard ratios (HRs) and 95% confidence intervals (CI) were estimated for the association between three different measures of oral health [frequency of tooth brushing; number of missing teeth; and the sum of decayed, missing, and filled teeth (DMFT)] and UGI cancers. During a median follow-up duration of 13 years, there were 794 incident UGI cancers (396 esophageal and 398 gastric cancers). Daily tooth brushing was associated with a decreased risk of developing both esophageal (HR = 0.670; 95% CI: 0.486-0.924) and gastric (HR = 0.741; 95% CI: 0.544-1.01) cancers (combined UGI cancer HR = 0.697; 95% CI: 0.558-0.871) compared with never brushing. Tooth loss in excess of the loess smoothed, age- and sex-specific median number of teeth lost was significantly associated with esophageal (HR = 1.64; 95% CI: 1.08-2.47) and gastric cancers (HR = 1.58; 95% CI: 1.05-2.38). There were some adverse associations between DMFT and UGI cancers but most were not statistically significant. These results suggest increased risk of developing UGI cancers among individuals with poor oral health, and those who do not perform regular oral hygiene. PREVENTION RELEVANCE: Poor oral health is associated with the risk of upper gastrointestinal cancers, and oral hygiene practices may help prevent these cancers.

©2021 American Association for Cancer Research.

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