Speaker's Highlight

• Don Sin University of British Columbia, St. Paul Hospital (Canada)
  Kenneth R. Chapman Toronto General Hospital Research Institute (Canada)
• Parameswaran Nair McMaster University (Canada)
  Carolyn Calfee UCSF (U.S.A.)
• Gregory P. Downey University of Colorado School of Medicine (U.S.A.)
  David A. Schwartz University of Colorado School of Medicine (U.S.A.)
• Neil Schluger Tuberculosis Control Branch, California Department of Public Health (U.S.A.)
  Nick Kim Critical Care & Sleep Medicine, University of California San Diego (U.S.A.)
• Nicola Hananiah Baylor College of Medicine (U.S.A.)
  Jae-Joon Yim Seoul National University College of Medicine (Republic of Korea)
• Koichiro Asano Tokai University School of Medicine (Japan)
  Diahn-Warng Perng Taipei Veterans General Hospital (Taiwan)
• Konstantinos Kostikas University of Ioannina (Greece)
  Karin Klooster University Medical Center Groningen (Kingdom of the Netherlands)

• Periodontal Disease And COPD Exacerbations

  Chronic obstructive pulmonary disease (COPD) and periodontal disease frequently occur in the same patient, particularly where smoking, diabetes, ageing, poor nutrition or limited access to preventive care are present. Inflamed gums can bleed, harbour pathogenic bacteria and contribute to a persistent inflammatory burden that may affect respiratory health.

  The association between periodontal disease and COPD exacerbations is clinically relevant, but it should be interpreted carefully. Gum disease is unlikely to be the sole cause of a flare-up. Instead, oral inflammation may add to other triggers, including viral infections, air pollution, smoking, medication problems and delayed treatment of early respiratory symptoms.

  Why Oral Health Matters In COPD

  Periodontitis is a chronic infection of the tissues supporting the teeth. It can cause swollen or bleeding gums, bad breath, gum recession, loose teeth and tooth loss. Bacteria from dental plaque may enter the bloodstream or be inhaled into the lower airways, especially when swallowing and cough reflexes are impaired.

  People with COPD may also find oral hygiene difficult. Breathlessness can make brushing tiring, while dry mouth caused by inhalers, oxygen therapy or other medicines encourages plaque accumulation. Reduced dexterity, fatigue and financial pressure can further delay dental appointments and allow gingival inflammation to become established.

  Biological Pathways Linking Gums And Lungs

  Several mechanisms could connect periodontal inflammation with respiratory deterioration. Oral bacteria and inflammatory cells may be aspirated into the lungs, where they can intensify airway irritation. Inflammatory mediators released from diseased gums may also contribute to systemic inflammation, although the scale and clinical importance of this effect vary between individuals.

  The relationship can run in both directions. COPD-related breathlessness, frequent hospital visits and repeated courses of medication may disrupt dental care. Inhaled medicines can leave residue in the mouth, and oral dryness may increase susceptibility to fungal infections and dental decay. These factors make regular mouth care part of comprehensive respiratory management rather than a separate concern.

  What Clinical Evidence Shows

  Observational studies have reported that people with severe periodontitis may experience poorer lung function or more frequent COPD flare-ups. Some research has linked periodontal pathogens with airway colonisation and increased inflammatory markers. However, many studies are small, use different definitions of gum disease or do not fully account for smoking, age, diabetes and socioeconomic disadvantage.

  Evidence that periodontal treatment directly prevents exacerbations remains developing. Scaling, root planing, professional cleaning and improved home care can reduce gum inflammation and improve oral health, but they should complement established COPD measures. Vaccination, pulmonary rehabilitation, smoking cessation, appropriate inhaler use and an individualised action plan remain central to reducing respiratory risk.

  Australian Care Realities

  In Australia, dental treatment is generally funded through private payment rather than universal Medicare coverage for adults. This can make periodontal assessment and professional cleaning difficult for people living on limited incomes, particularly when they are already paying for prescriptions, transport and respiratory equipment. Public dental services may have long waiting lists, with eligibility varying between states and territories.

  Access also differs between metropolitan and regional communities. A patient in Melbourne or Brisbane may have several dental practices nearby, while someone in regional Queensland, Western Australia or the Northern Territory may face long travel distances for periodontal care. Telehealth can support education and triage, but it cannot replace physical examination, radiographs or periodontal treatment.

  Australia’s tobacco control laws and plain-packaging requirements have reduced smoking prevalence, yet smoking remains a major shared risk factor for COPD and gum disease. Bushfire smoke and urban air pollution, including exposure in Sydney and other large cities, can add respiratory stress during periods when a patient’s oral and pulmonary health already require attention.

  Assessing Risk In Practice

  A respiratory review should include brief questions about bleeding gums, loose teeth, tooth pain, bad breath, difficulty chewing and the date of the last dental visit. Examination of the mouth can identify visible plaque, ulcers, thrush and gum inflammation, although a dentist or periodontist is needed to assess pocket depth, bone loss and treatment requirements.

  Clinicians should consider smoking status, diabetes control, nutritional problems, alcohol use, inhaler technique and exacerbation history together. A patient with severe periodontitis, repeated COPD admissions and poor access to dental care may benefit from coordinated referral. This does not prove that gum disease caused previous flare-ups, but it identifies a modifiable source of inflammation and infection.

  Systemic corticosteroids may be prescribed during selected acute exacerbations, but they can affect glucose control and infection risk. An explanation of steroid treatment should sit alongside advice about mouth care, monitoring and the patient’s broader COPD action plan.

  Practical Steps For Prevention

  A clear, achievable plan helps patients protect both oral and respiratory health:

  • Brush twice daily with fluoride toothpaste and use an interdental brush or floss where appropriate.
  • Rinse the mouth after using an inhaled corticosteroid, following the prescriber’s instructions.
  • Arrange regular dental reviews, with earlier assessment for bleeding, swelling, pain or loose teeth.
  • Stop smoking and seek evidence-based support through a GP, pharmacist or tobacco cessation service.
  • Maintain diabetes control, adequate nutrition and hydration, especially during respiratory illness.
  • Keep COPD vaccinations, action plans and inhaler technique reviews up to date.
  • Ask the respiratory and dental teams to share relevant medication and medical information.

  These measures should be adapted to dexterity, breathlessness, cognitive ability and cost. An electric toothbrush, larger handle, carer assistance or a community dental referral may make oral hygiene more realistic for someone with advanced COPD.

  Coordinating Long-Term Prevention

  The strongest approach involves GPs, respiratory physicians, pharmacists, dentists, dental hygienists and community nurses working from the same clinical picture. Dental professionals should know about oxygen use, anticoagulants, recent exacerbations and steroid courses, while respiratory teams should be aware of untreated oral infection, planned procedures and barriers to dental attendance.

  Patients should seek prompt medical review for increased breathlessness, sputum volume or sputum purulence, fever, confusion or reduced exercise tolerance. They should also obtain dental care for facial swelling, severe toothache, persistent bleeding or difficulty swallowing. Managing these problems early may reduce avoidable deterioration, even though periodontal treatment cannot replace standard COPD care.

  A practical takeaway is to treat oral health as part of routine COPD prevention: inspect the mouth, address gum disease, support daily cleaning and connect patients with affordable dental services before inflammation and respiratory symptoms become harder to control.

  Richard Russell Nuffield Department of Clinical Medicine, University of Oxford (United Kingdom)
• Mona Bafadhel King’s College London (United Kingdom)
  David Jackson Guy’s and St Thomas’ Hospital, King’s College London (United Kingdom)
• James Chalmers University of Dundee (United Kingdom)
  David Price University of Aberdeen (United Kingdom)