Dental Work Needed Before Braces — The Pre-Orthodontic Checklist

Why active decay must be filled before brackets are bonded

Dental caries (decay) is caused by acid-producing bacteria that demineralise tooth enamel. Placing a bracket over or adjacent to an area of active decay traps bacteria beneath and around the adhesive, creating conditions in which the decay can progress rapidly under the bracket without being detectable on visual inspection. At debond, teeth with pre-existing untreated decay can present with cavities that have extended significantly during the months or years of treatment. The adhesive used to bond brackets is not a cavity-filling material — it does not arrest decay. Any cavity identified before treatment should be filled with appropriate restorative material by your general dental practitioner before the orthodontic appointment to bond brackets. If the cavity is large and approaches the pulp, root canal assessment may be required first.

Periapical abscesses — root treatment or extraction first

A periapical abscess is an infection at the root tip, usually resulting from untreated deep decay or a previous trauma to the tooth. These appear as dark areas at the root apex on a periapical radiograph. Placing orthodontic forces on a tooth with an active periapical infection is contraindicated — the forces of tooth movement can spread infection through the bone and increase the risk of tooth loss. Before orthodontic treatment, any tooth with a periapical abscess must be assessed and either root canal treated (if the tooth is restorable) or extracted. Once treatment is complete and the infection is resolved, the tooth can be included in orthodontic treatment or the space managed appropriately. Your orthodontist will review periapical radiographs at the consultation stage and should identify any abscesses before treatment begins.

Gum disease must be stabilised before orthodontics

Periodontitis — active gum disease — is an absolute contraindication to orthodontic treatment. Moving teeth through inflamed, periodontitis-affected bone accelerates bone loss around the roots and can result in tooth mobility and tooth loss. The standard requirement is a minimum of three months of periodontal stability before orthodontic brackets are placed. Stability means periodontal pocket depths are within acceptable limits, bleeding on probing is minimal, and the patient has demonstrated adequate plaque control at home. Your GDP or a periodontist will typically provide a scaling and root planing course, reassess at three months, and issue a letter confirming periodontal stability to the orthodontist. Orthodontics can then proceed safely. Patients with a history of periodontitis will also need more frequent dental hygiene appointments throughout their orthodontic treatment.

Planned orthodontic extractions — who does them and when

Many orthodontic treatment plans involve extracting teeth — most commonly upper and lower first or second premolars — to create space for alignment. These extractions are arranged by the orthodontist but typically carried out by the patient's GDP on an NHS prescription (an orthodontic extraction prescription) or privately. The extractions should be completed before the brackets are fitted in most cases, because the alignment cannot proceed until the space created by the extraction is available. In some sequenced treatment plans, extractions may be staged partway through treatment, but the standard approach is to have all planned extractions completed before bond-up. Your GDP should receive written instructions from the orthodontist specifying which teeth are to be extracted. Do not have teeth extracted based on an informal conversation — always confirm in writing.

Wisdom tooth assessment and extraction

Third molars (wisdom teeth) are often assessed before orthodontic treatment, particularly in teenagers and young adults where the wisdom teeth are not yet fully erupted. Whether wisdom teeth need to be removed before or during orthodontic treatment depends on their position, angulation, and whether they are likely to cause problems during treatment. Fully impacted wisdom teeth that are not in contact with the second molar roots rarely need removal before orthodontic treatment. Partially erupted wisdom teeth or those pushing against the second molars may be recommended for extraction before treatment begins. The decision should be based on an OPG radiograph reviewed by the orthodontist. Wisdom teeth are not a cause of lower incisor crowding — this is a persistent myth — but they may complicate treatment mechanics in some cases.

Existing crowns and their effect on bracket bonding

Metal crowns cannot be bonded to with conventional orthodontic adhesive — the surface does not etch in the same way as enamel. Porcelain or zirconia crowns can be bonded to but require a special primer and the bond strength is lower than on natural enamel. If a tooth due to receive a bracket has an existing full crown, your orthodontist will discuss the options with you: a band (a metal ring that wraps around the tooth) can be fitted instead of a bracket, or a buccal tube can be cemented. This is a routine adaptation but it must be planned in advance — the orthodontist needs to know about crowns before the bond-up appointment so the correct materials are available.

Existing veneers and bracket adhesion

Brackets bonded to porcelain veneers are at high risk of causing veneer fracture when removed at debond. The force required to remove a bracket from porcelain can be enough to crack or delaminate the veneer. If you have veneers that are planned to be on teeth that require brackets, discuss this explicitly with your orthodontist. Options include bonding brackets to composite resin build-ups placed over the veneer surface, accepting the risk of veneer damage with a plan to replace the veneers after treatment, or considering clear aligner treatment as an alternative that avoids bracket bonding altogether. Patients with veneers considering orthodontic treatment should ensure this discussion happens at the consultation stage, not on the day of bond-up.

Radiographic assessment — CBCT and OPG

Before orthodontic treatment begins, radiographic assessment is standard. A dental panoramic tomograph (OPG) gives a broad overview of all the teeth, roots, bone levels, and any obvious pathology. It is the minimum standard before most orthodontic treatment. A cone beam CT (CBCT) is required for more complex cases — where impacted teeth need surgical exposure, where significant bone architecture questions arise, or where skeletal discrepancy may require surgical treatment. Your orthodontist should explain which radiographs are needed and why. In NHS-funded cases, the OPG is typically taken at the orthodontic unit. In private practice, your GDP may take the OPG before the referral is made. You should not proceed to bracket placement without adequate radiographic assessment.

How to get pre-orthodontic dental work done on the NHS versus privately

Pre-orthodontic dental work — fillings, extractions, gum treatment — can be provided by your NHS GDP if you are registered with a practice and the work is clinically needed. NHS dental treatment is provided under bands: Band 1 (check-up), Band 2 (fillings, extractions), Band 3 (crowns, bridges). Pre-orthodontic treatment such as fillings and extractions typically falls under Band 2. If you are not registered with an NHS dentist, you can seek private treatment for the pre-orthodontic work. There is no requirement for the pre-orthodontic treatment to be NHS to qualify for NHS orthodontic treatment — they are assessed independently. Your orthodontist should provide a written list of required dental work so your GDP knows exactly what is needed.

How the dentist and orthodontist coordinate the pre-treatment checklist

In the NHS system, the orthodontist typically sends a letter to the referring GDP or to the patient's registered dentist outlining what dental work is required before treatment can begin. The GDP completes this work and writes back confirming dental fitness. The orthodontist then books the bond-up appointment. In private practice, this process is more variable — some orthodontists require a dental fitness letter from the patient's dentist, while others perform a basic dental check themselves before bonding. Patients should ensure that their GDP and orthodontist are communicating and that nothing is assumed. Asking both parties explicitly whether there is any outstanding dental work and when treatment can proceed is the most reliable way to avoid delays.

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.