Excess risk of temporomandibular disorder associated with cigarette smoking in young adults.

Journal Article (Journal Article)

UNLABELLED: Evidence suggests that the effect of cigarette smoking on chronic pain is stronger in younger than older adults. This case-control study investigated whether age modified an effect of smoking on temporomandibular disorder (TMD) in 299 females aged 18 to 60 years. It also investigated the extent to which this relationship was explained by psychological profile, inflammatory response, and allergy. Cases were defined using the Research Diagnostic Criteria for Temporomandibular Disorders based on clinical examination. Psychological profile was evaluated using standardized instruments. Inflammatory response was evaluated with 11 cytokines isolated in plasma. History of allergy conditions was self-reported. Odds ratios (ORs) for the effect of smoking were calculated using binary logistic regression. Stratified analyses and the likelihood ratio test examined effect modification by smoking. Compared with nonsmokers, ever smokers aged <30 years had higher odds of TMD (OR = 4.14, 95% CI: 1.57, 11.35) than older adults (OR = 1.23, 95% CI: .55, 2.78) (P (effect modification) = .038). Adjustment for psychological profile, cytokines, and history of allergy-like conditions attenuated the effect by 45% to statistical nonsignificance. The main finding was reproduced with secondary analyses of 2 nationally representative surveys of adults conducted in the US and Australia. PERSPECTIVE: This study showed that smoking was associated with TMD risk in females, but only in young adulthood. It replicated this finding in 2 nationally representative surveys of females in the US and Australia. Findings may alert clinicians to recognize that smoking is a concern for TMD in younger female patients.

Full Text

Duke Authors

Cited Authors

  • Sanders, AE; Maixner, W; Nackley, AG; Diatchenko, L; By, K; Miller, VE; Slade, GD

Published Date

  • January 2012

Published In

Volume / Issue

  • 13 / 1

Start / End Page

  • 21 - 31

PubMed ID

  • 22036516

Pubmed Central ID

  • PMC3249502

Electronic International Standard Serial Number (EISSN)

  • 1528-8447

Digital Object Identifier (DOI)

  • 10.1016/j.jpain.2011.08.003


  • eng

Conference Location

  • United States