Orthodontic Treatment While Breastfeeding: What's Safe in the UK

Is orthodontic treatment safe during breastfeeding?

In general, yes. The orthodontic hardware itself — brackets, wires, bands, and clear aligners — poses no risk to a breastfeeding infant. The main considerations are around X-rays, local anaesthetic if any minor procedures are needed, pain relief, and certain antibiotics. Most women who want to continue or start orthodontic treatment while breastfeeding can do so safely with appropriate precautions and open communication with their clinical team.

Dental X-rays — radiation dose and safety

Dental X-rays deliver an extremely low dose of radiation. A full set of orthodontic records including a dental panoramic tomogram and a lateral cephalogram delivers a combined dose of roughly 5 to 10 microsieverts — less than the background radiation received on a single short-haul flight. Radiation does not accumulate in breast milk; there is no pathway by which diagnostic dental X-rays affect a breastfed infant. An abdominal lead shield is offered as standard practice and provides additional reassurance. Public Health England and the Faculty of General Dental Practice guidance confirm that dental radiography is safe during breastfeeding and no interruption to feeding is required.

Local anaesthetic — safe options during breastfeeding

Lidocaine, the most commonly used dental local anaesthetic, is safe during breastfeeding. It has a very short half-life, does not accumulate in breast milk to any significant degree, and is poorly absorbed orally — meaning that even if trace amounts reached breast milk, they would not be absorbed by the infant during feeding. Articaine is similarly considered compatible with breastfeeding. Mepivacaine and prilocaine are also used in dentistry and are generally accepted as compatible, though lidocaine remains the first choice. Vasoconstrictors such as adrenaline in low dental concentrations are also considered safe.

Pain relief — what is safe and what to avoid

Paracetamol is the first-line analgesic during breastfeeding and is safe at standard doses. Ibuprofen is also considered compatible with breastfeeding by the Breastfeeding Network and the British National Formulary when used in short courses at the lowest effective dose — the amount that transfers into breast milk is minimal. It is generally preferred over stronger analgesics for orthodontic discomfort. Codeine-containing products should be avoided during breastfeeding; codeine is metabolised to morphine and some women are ultra-rapid metabolisers, which can result in unsafe morphine levels in breast milk. Tetracycline antibiotics — occasionally prescribed for dental infections — are contraindicated during breastfeeding because they bind calcium in developing bones and teeth.

The braces and aligner hardware itself

Fixed metal or ceramic brackets bonded to teeth, orthodontic wires, bands, and removable clear aligners present no risk to a breastfeeding infant. There is no systemic absorption of bracket adhesive or wire alloys through the orthodontic route that would reach breast milk. Nickel-titanium wires, stainless steel wires, and ceramic bracket materials are biologically inert in this context. Some patients ask about bisphenol A in aligner materials; the amounts involved are negligible and do not represent a clinical concern for the infant.

Fluoride — safe and recommended

Fluoride toothpaste and professional fluoride treatments applied by the orthodontist are safe during breastfeeding. Fluoride varnish applied to teeth at clinical concentrations does not result in systemic absorption sufficient to affect breast milk. Maintaining good oral hygiene and using fluoride toothpaste is especially important during orthodontic treatment to reduce the risk of white spot lesions around brackets. Your orthodontist may apply fluoride varnish or prescribe high-fluoride toothpaste; both are safe during breastfeeding.

When to delay orthodontic treatment

There are some circumstances where starting or continuing orthodontic treatment during breastfeeding may be better deferred. If you are experiencing significant postpartum fatigue or mental health difficulties, the additional demands of orthodontic appointments and maintenance may add unhelpful pressure. If your treatment plan requires multiple surgical procedures, sedation, or general anaesthesia, these carry separate considerations that should be discussed with your anaesthetist. If your teeth are moving unusually rapidly or you are noticing increased sensitivity — which can occur with the hormonal changes of the postnatal period — your orthodontist should be informed so the force levels applied can be reviewed.

What to tell your orthodontist and midwife or health visitor

Always inform your orthodontist that you are breastfeeding at the start of treatment or when you become pregnant and plan to breastfeed. This allows the clinical team to make appropriate choices around X-ray timing, analgesics, and any antibiotics prescribed. If you have concerns about specific materials or medications, ask your orthodontist to check the drug's compatibility with breastfeeding using the Lactmed database or the Breastfeeding Network's drugs in breastfeeding information sheets. Your midwife or health visitor can also signpost you to additional resources and should be aware of any prescription medication your orthodontist has given you.

Useful related pages

This guide is for general information only. It is not a diagnosis, treatment plan, or substitute for advice from a registered dentist or orthodontist.