The numbers are stark. Adults with mental health problems have 25 percent more cavities than the general population. Nearly 50 percent experience periodontal disease.
The General Council of Dentists of Spain says the relationship runs in both directions. Poor oral health can undermine psychological well-being, while mental disorders can make brushing and dental attendance harder to maintain.
A UK clinical audit found that a full oral examination was documented for only 12 of 114 psychiatric inpatients, or 10.5 percent. No patient had a completed dental-risk assessment.
The oral health burden is measurable
Studies cited by the Council indicate that two out of three adults with mental health problems have experienced dental pain in the past twelve months. More than a third have untreated cavities. Those figures point to active disease and unmet care needs, rather than a problem limited to appearance.
Daily routines can become difficult during periods of poor mental health. Some patients neglect brushing and interdental cleaning. Others avoid dental appointments because of odontophobia, allowing gum disease and cavities to progress.
The clinical pathways vary. People with bulimia may develop dental erosion from the acidity of vomit. Low calcium levels may also affect enamel. Excessively vigorous brushing, which can occur in patients with bipolar disorder or similar conditions, may abrade enamel. Certain medicines can cause dry mouth, or xerostomia. Stress and anxiety can contribute to bruxism.
The WHO updated its STEPS oral-health module in 2024 to combine population self-reports with a brief clinical examination. The framework is aligned with the WHO oral-health action plan for 2023-2030 and is intended to improve comparable data on disease and access to care, including among vulnerable groups.
Why dental care must include the whole person
The effects can move from the mouth back into daily life. Difficulty chewing or tooth loss may interfere with socialising. Emotional well-being, self-esteem and quality of life can suffer.
That connection is consistent with earlier reporting on the difficulty of embedding routine oral assessment in wider healthcare. The Council's message is direct: dentists need to know about a patient's mental health situation and medication. That information lets them adapt care and consider preventive measures.
Óscar Castro, president of the General Council of Dentists of Spain, said: "The mouth is part of our overall health and can also influence our emotional well-being. People going through a mental health issue should not feel uncomfortable discussing it with their dentist. Knowing their situation and the medication they take allows for more individualized care and the adoption of preventive measures when necessary,"
The UK psychiatric inpatient audit also found that 30 patients reported acute dental problems during hospitalisation. Only 18 received professional dental care. The clinical audit findings indicate substantial need alongside incomplete access. Its authors link elevated risk to medication-related dry mouth and cognitive impairment. Reduced motivation for self-care was another factor.
Practical steps that protect oral health
The Council recommends brushing with fluoride toothpaste at least twice a day for two minutes. It also advises paying attention to interdental cleaning. A balanced diet with less sugar is recommended, along with regular hydration using water and a dental visit when dry mouth persists. Tobacco and alcohol should be avoided. Mouthwashes or other products should not be used without proper indication.
Patients with dental phobia should tell the clinic team before an appointment. That information allows staff to adapt their approach and help reduce fear during treatment.
Stress and anxiety are recognised by NHS Coventry and Warwickshire Partnership as common contributors to bruxism. The condition can cause jaw pain. Tooth wear or damage may follow. Headaches may occur, as can earache and disrupted sleep. Persistent clenching should be discussed with a dental professional.
These recommendations are deliberately basic because mental health difficulties can make basic routines the first things to disappear. The dental profession should treat communication and coordinated care as clinical necessities rather than optional extras. The Council's evidence links neglect in either area with worsening problems in the other.
