HealthWatchlist verdict: Lavender scent may help reduce short-term anxiety around a dental visit, but results vary and many trials have weak controls. It does not numb a tooth, replace local anaesthetic or establish a treatment for persistent dental phobia.
A calmer appointment is different from treating pain
Dental anxiety ranges from mild nervousness to fear that prevents someone seeking care. Research about anxiety immediately before a procedure does not necessarily tell us how to help a person who has avoided the dentist for years.
Lavender aromatherapy is usually studied as an addition to dental care. Participants still receive the relevant dental treatment and clinical pain control. Its possible role is helping with distress, not making an untreated tooth problem safe to ignore.
The reviews report benefit, but disagree about certainty
A lavender-specific systematic review and meta-analysis included six studies and found lower anxiety scores with lavender. Its authors rated the pooled anxiety evidence highly. That positive assessment deserves acknowledgement rather than being omitted because other reviews are more cautious.
A broader review of dental aromatherapy included 17 studies and judged the evidence low or very low in certainty, with substantial concerns about bias. It found more encouraging comparisons against usual care than against an active alternative such as music.
These reviews used different sets of studies and appraisal decisions. A small statistical inconsistency between pooled results is not the only question: masking, comparison treatments and the reliability of outcome measurement also affect confidence.
A 2026 scoping review mapped 20 trials involving 3,460 participants. Anxiety findings were often favourable, while pain findings were generally less convincing. Only one trial used an olfactory control. A scoping review maps the field; it does not by itself establish a precise treatment effect.
| Evidence | What it suggests | Important limit |
|---|---|---|
| Immediate anxiety | Often lower in aromatherapy groups | Many comparisons cannot conceal the scent |
| Pain and local anaesthesia | Not consistently improved | Lavender does not replace dental pain control |
| Persistent dental phobia | Not established by brief appointment studies | May need a tailored behavioural and clinical plan |
Recent trials add detail rather than a universal answer
A randomised wisdom-tooth surgery trial reported favourable changes in some physiological and treatment measures with lavender, including cortisol and the number of anaesthetic cartridges used. Every such result belongs within the study’s clinical setting. It does not mean anaesthetic was unnecessary or that a patient should request less than needed.
A 100-child trial compared lavender, chamomile, peppermint and a control condition during dental care. Lavender and chamomile performed better on a child-friendly anxiety measure. The difficulty of concealing a distinctive smell and the specific age group limit generalisation.
Importantly, a 72-person root-canal trial comparing lavender, music, both and a control did not find significant between-group differences in blood pressure or heart rate. Those physiological outcomes are not identical to self-reported anxiety, but the negative comparisons should remain visible.
A 20-person dental-office pilot reported lower anxiety with lavender without corresponding changes in its EEG and heart-rate-variability measures. A small experiment in healthy participants is useful exploratory work, not a definitive trial in people with severe dental phobia.
Why an unscented comparison can be a weak test
Someone who notices lavender may expect to relax, while someone in an unscented room knows that they did not receive the aroma. Extra attention and the treatment setting may also differ. This does not make a person’s reduced anxiety unreal, but it makes the specific contribution of lavender harder to measure.
A more informative study would compare equally plausible scents or another calming intervention, keep staff attention similar, and measure whether the effect changes treatment completion or future attendance. Brief anxiety scores alone cannot establish those longer-term benefits.
How to approach an anxious dental visit
Tell the dentist about the fear before treatment starts. Agree how you can signal for a pause and discuss available pain control and anxiety support. If a scent helps you, ask whether it is suitable in that practice rather than bringing a diffuser into a shared clinical space.
NHS breathing exercises for stress provide a simple non-drug approach that some people find useful. Such strategies can accompany a dental plan, but should not be used to postpone treatment of swelling, infection or persistent pain.
NCCIH describes possible lavender adverse effects and safety uncertainties. Do not put essential oil onto a painful tooth or gum, swallow it, or apply it inside a child’s mask without professional agreement. A pleasant room scent and direct exposure of mouth or skin are different interventions.
Our assessment
Finding: promising short-term anxiety benefit. Evidence strength: limited human evidence. Positive trials justify interest, while control problems and inconsistent physiological findings limit certainty. Lavender is best discussed as an optional comfort measure alongside appropriate dental care.
How this review was researched
Research checked on 14 September 2026. We searched PubMed for the named preparation and outcome, read the retrieved study abstracts and relevant reviews, and checked the linked health guidance. This is an editorial review, not an exhaustive systematic review. We identify studies of mixtures, other preparations and different patient groups rather than treating them as interchangeable evidence.
Related reading
- Lavender oil profile
- Essential oils and anxiety
- Toothache: evidence and safer care
- Lavender and broader anxiety claims
References
- Is aromatherapy associated with patient's dental anxiety levels? A systematic review and meta-analysis.
- Efficacy of aromatherapy on dental anxiety: A systematic review of randomised and quasi-randomised controlled trials.
- Aromatherapy with essential oils to reduce anxiety, pain, and discomfort during in-office dental procedures: A scoping review.
- Aromatherapy with lavender essential oil for the control of dental anxiety in patients undergoing dental surgery: A triple-blind randomized clinical trial.
- The effects of lavender, chamomile and peppermint inhalation aromatherapy on dental anxiety in children: A randomized controlled trial.
- Effects of Music and Aromatherapy on Blood Pressure and Heart Rate Among Endodontic Patients: A Randomized Clinical Trial.
- Scents modulate anxiety levels, but electroencephalographic and electrocardiographic assessments could diverge from subjective reports: a pilot study.
- NHS: Breathing exercises for stress
- NCCIH: Lavender