---
title: "Braces and Aligners During Pregnancy UK: Safety Guide"
url: https://virtualconsultant.online/guides/orthodontics-and-pregnancy-uk
description: "Yes, existing braces or aligners can usually continue safely in UK pregnancy; new treatment and routine X-rays are typically deferred until after delivery."
updated: 2026-09-06T00:00:00Z
publisher: Virtual Consultant Online
---

# Orthodontics and Pregnancy UK: Is It Safe?

Existing braces, clear aligners, and retainers can usually continue safely throughout pregnancy, while starting new orthodontic treatment is generally deferred until after delivery. This guide explains why, how pregnancy changes oral health, and what UK clinical guidelines recommend at each stage.

This guide is for informational purposes only. Always discuss individual health decisions with your midwife, obstetrician, and dental or orthodontic team before making changes to treatment.

## Is Orthodontic Treatment Safe During Pregnancy?

| Question | Answer |
| --- | --- |
| **Is it safe to continue braces during pregnancy?** | Generally yes. Existing orthodontic treatment can usually continue during pregnancy provided oral hygiene is managed well, because hormonal changes can make gums more prone to inflammation. Tell your orthodontist as soon as you know you are pregnant so they can adjust appointments, cleaning advice and any imaging, and keep attending your scheduled visits. |
| **Should I start new orthodontic treatment during pregnancy?** | Starting new treatment is not usually recommended during pregnancy, and most orthodontists advise waiting until after delivery. That avoids routine imaging and the gum changes that hormones can cause, and it lets you commit to a full course of appointments. If you are already pregnant and unsure, ask your orthodontist what timing suits you. |
| **Are dental X-rays safe during pregnancy?** | Dental X-rays are considered safe with a lead apron when they are clinically necessary, and the dose to the abdomen is very small. Routine pre-treatment X-rays for orthodontics are usually deferred until after pregnancy. If you need urgent dental imaging, make sure the clinician knows you are pregnant before it is taken. |
| **Can clear aligners be worn during pregnancy?** | Yes. Clear aligner material is inert and is considered safe to continue wearing during pregnancy. Keep cleaning your teeth and aligners carefully because gum changes are more common, and tell your orthodontist you are pregnant so they can review your plan, your appointment schedule and any changes to your wear routine. |
| **Will pregnancy affect my orthodontic results?** | Hormonal gum changes can increase bone turnover and affect how quickly teeth move, but the effect is usually temporary. Good oral hygiene and keeping your appointments help protect your results. Your orthodontist can tell you whether your treatment plan needs any adjustment during pregnancy. |

## How Does Pregnancy Affect Oral Health?

Pregnancy causes significant hormonal changes that affect gum tissue. These changes are clinically important in the context of orthodontic treatment:

Pregnancy gingivitis

Elevated progesterone levels cause increased gum sensitivity and inflammatory response to plaque. Gums may bleed more easily during brushing or flossing. This affects roughly 60–75% of pregnant women to some degree and typically resolves postpartum.

Pyogenic granuloma (pregnancy tumour)

A benign, localised overgrowth of gum tissue that can appear during pregnancy — usually between teeth or near brackets. Not harmful but can bleed. Typically resolves after delivery; occasionally needs removal.

Increased bone remodelling rate

Hormonal changes affect the rate at which alveolar bone remodels around moving teeth. This may slightly alter the speed of tooth movement, though evidence on clinical significance is limited.

Increased tooth mobility

Increased bone turnover and relaxin hormone can cause slightly increased tooth mobility during pregnancy. This is usually temporary and resolves postpartum.

Morning sickness and enamel erosion

Frequent vomiting introduces stomach acid to the mouth. Rinsing with water (not brushing immediately after) helps protect enamel. This is relevant for anyone with braces or aligners and can affect tooth condition.

## Can You Continue Existing Orthodontic Treatment?

If orthodontic treatment was started before pregnancy, it can usually continue. The following considerations apply:

Inform your orthodontist you are pregnant so they can adjust the treatment plan if needed.

Routine orthodontic appointments (tightening, aligner progression) can continue without significant risk.

Oral hygiene becomes even more important — pregnancy gingivitis around fixed braces needs careful management.

If significant gum inflammation develops, the orthodontist may slow treatment progression temporarily.

Emergency appointments (broken brackets, poking wires) should be attended as normal — do not leave problems unaddressed.

Retainer wear should continue as instructed if in the retention phase.

## Can You Start New Orthodontic Treatment During Pregnancy?

Starting new treatment during pregnancy is generally not recommended unless there is a compelling clinical reason. The key issues are:

Pre-treatment X-rays are routinely required to plan orthodontic treatment — these are typically deferred during pregnancy.

Impressions and scans needed to fabricate aligners may cause nausea in patients with morning sickness.

Gum changes during pregnancy can affect initial records and how teeth move, potentially complicating treatment planning.

If treatment started during pregnancy is not completed before delivery, postpartum hormonal changes could affect results.

Some orthodontists are unwilling to initiate new contracts during pregnancy for medico-legal reasons.

Most orthodontists will recommend waiting until after delivery and breastfeeding is established before starting new treatment.

## Are Dental X-Rays Safe During Pregnancy?

Dental X-rays involve very low radiation levels. According to NHS guidance and the British Dental Association, dental X-rays during pregnancy are considered safe when clinically necessary, particularly when a lead apron is used. However:

Routine pre-treatment X-rays (OPG panoramic, cephalometric) are usually deferred until after delivery unless clinically urgent.

If an X-ray is clinically necessary during pregnancy, a lead apron is used and the exposure is minimised.

Digital X-ray systems used in modern orthodontic practices deliver significantly lower doses than older film-based systems.

The background radiation dose from a dental X-ray is comparable to a few hours of natural background radiation.

Always inform your orthodontist that you are pregnant before any imaging is taken.

## Is It Safe to Wear Clear Aligners During Pregnancy?

Clear aligners (Invisalign and equivalents) are generally considered safe to continue during pregnancy. Specific considerations:

Aligner material (SmartTrack/EX30 thermoplastic) is biocompatible and does not leach harmful compounds when worn as intended.

Attachments (composite tooth-coloured bumps bonded to teeth) are the same material used for standard fillings — considered safe.

Aligners can be removed for meals, which is helpful if morning sickness affects food tolerance.

If gum swelling develops, aligners may temporarily feel tighter — inform your orthodontist.

Teeth whitening products inside or outside aligners are not recommended during pregnancy.

## What Is the Best Timing for Treatment by Trimester?

| Stage | Recommendation | Notes |
| --- | --- | --- |
| **Pre-pregnancy** | Ideal time to start | Full records, X-rays, and planning can proceed without restriction |
| **First trimester** | Avoid starting; emergency care only | High morning sickness risk; major hormonal change period |
| **Second trimester** | Safest period for any necessary dental treatment | If urgent treatment needed, second trimester is preferred |
| **Third trimester** | Continue existing treatment; avoid starting new | Lying flat for appointments may be uncomfortable |
| **Post-delivery (breastfeeding)** | Generally safe to start or restart | Some orthodontists prefer to wait until breastfeeding is established |
| **Post-weaning** | No restrictions | Optimal time to start or resume full treatment |

---

### Related Guides

[Adult Orthodontics UK](https://virtualconsultant.online/guides/adult-orthodontics-uk)

[Orthodontics Over 50s](https://virtualconsultant.online/guides/orthodontics-over-50s-uk)

[Retainers: Complete Guide](https://virtualconsultant.online/guides/orthodontic-retainers-guide)

[Orthodontic Second Opinion](https://virtualconsultant.online/guides/orthodontic-second-opinion-uk)

#### Start with a clinician review

Upload guided photos and receive an initial view of likely treatment options before booking appointments.

[Start a Photo Assessment](https://virtualconsultant.online/evaluations/quote)

##### More patient guides

[All Guides](https://virtualconsultant.online/guides)

[Treatment Options](https://virtualconsultant.online/treatments)

[Costs and Pricing](https://virtualconsultant.online/costs)

## Ready to get your quote?

Upload your photos and get clinician-reviewed options for braces or clear aligners.

[Start My Free Quote](https://virtualconsultant.online/evaluations/quote) [Find an Orthodontist](https://virtualconsultant.online/locations)

Prefer to learn first? Explore [treatments](https://virtualconsultant.online/treatments), [problems](https://virtualconsultant.online/problems), and [costs](https://virtualconsultant.online/costs).

### Frequently Asked Questions

Can pregnancy cause teeth to move?

Slightly increased tooth mobility can occur during pregnancy due to hormonal effects on the periodontal ligament and alveolar bone. This is usually temporary and teeth typically restabilise postpartum. It rarely causes clinically significant movement in healthy adults, but it is one reason orthodontists may monitor treatment progress more closely during pregnancy.

Will I need to pause braces during pregnancy?

Not necessarily. Existing orthodontic treatment can usually continue throughout pregnancy with appropriate monitoring. Your orthodontist may adjust the treatment pace if significant gum inflammation develops. There is no universal recommendation to pause treatment, but your individual circumstances — gum health, case complexity, how far along you are — will influence the decision.

Is Invisalign safe during pregnancy?

Invisalign and other clear aligners use biocompatible thermoplastic materials that are not known to pose risks during pregnancy. Existing aligner treatment can generally continue. Starting a new Invisalign course during pregnancy is usually deferred until after delivery, primarily because pre-treatment X-rays and records are routinely required before beginning a new course.

Can I have orthodontic treatment while breastfeeding?

Orthodontic treatment is generally considered compatible with breastfeeding. There are no known harmful substances transferred through breast milk from orthodontic appliances or materials. Some orthodontists prefer to wait until breastfeeding is established before beginning new treatment, both for practical scheduling reasons and because the patient's focus is typically on the newborn in the early postpartum period.

Should I tell my orthodontist I am pregnant?

Yes — always inform your orthodontist if you are pregnant or planning to become pregnant. This allows them to defer X-rays, modify the treatment pace if gum health requires it, and ensure any emergency care is managed appropriately. Pregnancy should be disclosed at every routine appointment so clinical decisions are made with full information.

Can I start a Virtual Consultant Online assessment during pregnancy?

Yes — a photo assessment through Virtual Consultant Online is completely safe during pregnancy. There are no X-rays, no clinical contact, and no commitment to treatment. It is an excellent way to explore your options and understand likely costs and treatment types before your baby arrives, so that when you are ready to start treatment postpartum you already have a clear picture of what is involved. The reviewing clinician can also flag if there are any reasons to wait or prioritise particular aspects of treatment planning.

Citation details

Title Braces and Aligners During Pregnancy UK: Safety Guide

Publisher Virtual Consultant Online

Published 2026-05-25

Updated 2026-09-06

URL [https://staging.virtualconsultant.online/guides/orthodontics-and-pregnancy-uk](https://staging.virtualconsultant.online/guides/orthodontics-and-pregnancy-uk)