---
title: "Osteogenesis Imperfecta and Orthodontics UK"
url: https://virtualconsultant.online/guides/osteogenesis-imperfecta-orthodontics-uk
description: "Orthodontic treatment with OI in the UK: bracket bonding on fragile enamel, debond risks, bisphosphonate effects, skeletal Class III."
updated: 2026-08-25T00:00:00Z
publisher: Virtual Consultant Online
---

OI

Brittle Bone Disease

Complex Needs

Bisphosphonates

# Osteogenesis Imperfecta and Orthodontics UK

Osteogenesis imperfecta (OI) — brittle bone disease — presents specific orthodontic challenges including fragile enamel, dentinogenesis imperfecta type I, fracture risk at debond, and bisphosphonate effects on tooth movement. This guide explains what patients and families need to know when planning orthodontic care with OI.

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## What is osteogenesis imperfecta and how does it affect teeth?

Osteogenesis imperfecta is a group of heritable connective tissue disorders caused by mutations in collagen type I genes (predominantly COL1A1 and COL1A2), resulting in bone fragility. The condition is classified into types I through IV based on severity, with type I being the mildest and type III the most severe. Approximately 80% of OI patients also have dentinogenesis imperfecta type I (DI-I), in which the dentine matrix is abnormally mineralised, producing teeth that appear amber, blue-grey, or opalescent. DI-I teeth have weaker enamel-dentine bonds and increased susceptibility to attrition and fracture under orthodontic or dietary loading. Not all OI patients have dental involvement — type I (mild OI) often presents without dentinogenesis imperfecta — but dental assessment should be part of initial OI management in all cases.

## Bracket bonding challenges with fragile enamel in OI

Bonding orthodontic brackets to enamel in OI patients requires careful assessment because the enamel may be structurally compromised, thin, or poorly mineralised depending on the OI type and presence of dentinogenesis imperfecta. Standard acid-etch bonding (37% phosphoric acid) can be used but the etch response may be atypical, producing irregular or reduced etching patterns on DI-I enamel. Some clinicians use self-etching primers which apply a milder acid and may be preferable where enamel structure is uncertain. Bracket selection should prioritise smaller base area to reduce the peel force at debond. Lingual fixed appliances should be avoided on DI-I teeth because the increased loads from torquing mechanics on weakened enamel are harder to predict. Removable clear aligners are often preferred in OI as they distribute forces more diffusely, do not require direct bonding, and allow easy removal if complications arise. Where fixed braces are clinically necessary, an experienced orthodontist working within a specialist craniofacial centre is recommended.

## Debonding and fracture risk — the peel-off technique

The debond appointment carries the highest fracture risk in orthodontic treatment for OI patients. Standard bracket removal using debonding pliers applies a peel stress concentrated at the bracket base, which can fracture the enamel surface or, in DI-I teeth, cause a deeper fracture through weakened dentine. The peel-off technique minimises this risk: a scaler or probe is used to lift the bracket from the gingival margin edge first using minimal lateral and peeling force rather than direct debonding plier force. The bond strength should be checked throughout treatment — if brackets debond spontaneously during treatment without significant impact, this may indicate the bond is appropriate for the enamel quality. Post-debond, remaining adhesive should be removed using a fine tungsten carbide bur at low speed with water cooling rather than aggressive polishing, to minimise surface enamel loss on already fragile surfaces. Clinical photographs and written consent documentation of the pre-treatment enamel condition are advisable in case of disputed fractures.

## Bisphosphonate therapy and orthodontic tooth movement

Many patients with moderate-to-severe OI are treated with bisphosphonates — particularly pamidronate (intravenous) in children and alendronate or risedronate (oral) in adults — to increase bone mineral density and reduce fracture frequency. Bisphosphonates work by inhibiting osteoclast activity, which is the cellular mechanism that removes bone on the pressure side of orthodontic tooth movement. Inhibited osteoclast activity slows or may halt tooth movement. Clinical studies in OI patients on bisphosphonate therapy have shown significantly reduced rates of orthodontic tooth movement compared with non-bisphosphonate controls, with some patients showing near-complete resistance to movement during active treatment. The implications are: treatment time may be substantially extended; tooth movement goals may need to be reduced in ambition; and anchorage demands change because anchoring teeth are also less likely to move. There is also a risk of medication-related osteonecrosis of the jaw (MRONJ) if extractions are needed during orthodontic treatment — the risk is lower with bisphosphonates used for OI (low cumulative dose) than in cancer patients on high-dose regimens, but it is not zero. Extraction decisions should be made conservatively and with haematology or metabolic medicine input. Bisphosphonate holiday (drug cessation before extractions) may be discussed with the prescribing team, though the evidence for this in OI patients specifically is limited.

## Skeletal Class III from maxillary retrusion in OI

OI types III and IV often present with midfacial hypoplasia — underdevelopment of the maxilla relative to the mandible — producing a skeletal Class III malocclusion. This presents differently from the Class III seen in conditions such as Crouzon or Apert syndromes, but the functional consequences of an anterior crossbite with reduced overjet are similar: restricted incisor guidance, increased risk of anterior tooth wear, and potential temporomandibular joint loading. In growing children, early orthopaedic intervention with facemask (reverse pull headgear) may be considered to stimulate maxillary forward growth, though the fragility of the facial skeleton in moderate-to-severe OI limits the forces that can safely be applied. In adult OI patients, the definitive correction of a skeletal Class III requires orthognathic surgery — Le Fort I osteotomy to advance the maxilla and/or bilateral sagittal split osteotomy to set back the mandible. Surgical planning in OI requires close liaison between the orthognathic surgeon and metabolic medicine, and pre-operative bisphosphonate management, bone densitometry, and fracture risk assessment are standard.

## Jaw fracture risk during orthodontic treatment and extractions

In severe OI, the mandible and maxilla may themselves be fragile, and jaw fracture has been reported following routine dental procedures including extractions, deep scaling, and, rarely, prolonged mouth opening for dental appointments. Practical measures to reduce risk include: limiting appointment duration to 30–45 minutes for complex procedures; using a bite block or mouth prop to avoid excessive mouth opening forces; ensuring the patient is positioned comfortably before any intraoral work; performing all extractions (if unavoidable) under specialist care with appropriate anaesthetic cover; and having a clear pathway for urgent maxillofacial review if jaw fracture is suspected post-procedure. The anaesthetic considerations for OI patients are substantial — prone positioning is contraindicated, suxamethonium is avoided, and all handling during general anaesthesia requires specific OI protocols. Orthodontic treatment under general anaesthesia (bonding records, debond) should only be undertaken in specialist centres with anaesthetic experience of OI.

## Staged orthodontic-restorative rehabilitation and NHS pathway

For OI patients with significant dental involvement (multiple worn or fractured teeth, missing teeth, or severe malocclusion), the most appropriate approach is a coordinated orthodontic-restorative rehabilitation plan. This typically involves: stabilising active dental disease first (treating abscesses, carious teeth, and gum disease); orthodontic pre-restorative space creation or alignment; followed by restorative dentistry to restore severely worn or fractured teeth using composite, ceramic, or implant-supported restorations as appropriate. In the UK, patients with OI are typically managed under the NHS complex needs pathway through a specialist craniofacial centre or dental hospital with paediatric dentistry, orthodontics, restorative dentistry, and oral and maxillofacial surgery working in coordination. A referral from the GP or community dentist to the craniofacial MDT is the appropriate starting point for children. For adults, a referral to a dental hospital consultant in special care dentistry or restorative dentistry will coordinate the OI-specific treatment plan. Online orthodontic photo assessments can help patients and families understand likely options before their specialist appointments.

## Useful related pages

[Orthodontic Treatment for Adults UK](https://virtualconsultant.online/guides/adult-orthodontics-uk)

[Clear Aligners for Adults](https://virtualconsultant.online/treatments/clear-aligners-for-adults)

[NHS Orthodontics UK](https://virtualconsultant.online/nhs)

[Orthodontic Anxiety UK](https://virtualconsultant.online/guides)

[What to Expect at Orthodontic Appointments](https://virtualconsultant.online/guides)

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

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### Frequently Asked Questions

Can people with osteogenesis imperfecta have orthodontic treatment?

Yes, but treatment needs careful planning within a specialist setting. OI does not preclude orthodontic treatment, but the approach must account for fragile enamel (especially if dentinogenesis imperfecta is present), the effects of bisphosphonate therapy on tooth movement speed, fracture risk at debonding, and the possibility of a skeletal Class III jaw relationship requiring surgical correction. Clear aligners are often preferred over fixed braces because they distribute forces without direct enamel bonding. Treatment is best coordinated by an orthodontist experienced in complex medical needs, ideally within a dental hospital or craniofacial centre.

Does bisphosphonate treatment stop teeth from moving with braces?

Bisphosphonates significantly slow orthodontic tooth movement by inhibiting osteoclasts — the cells that resorb bone on the pressure side of a moving tooth. In some patients on long-term pamidronate or alendronate, tooth movement is substantially reduced and treatment time may be doubled or more. Complete resistance to movement has been reported in individual cases. Your orthodontist should discuss realistic timelines with you before starting treatment, and goals may need to be modified if tooth movement proves very slow. The prescribing team managing your OI should be involved in discussions about any planned extractions, as there is a small risk of jaw osteonecrosis with bisphosphonates.

What is dentinogenesis imperfecta and does it affect braces?

Dentinogenesis imperfecta type I (DI-I) occurs in approximately 80% of people with OI. It affects the dentine — the layer beneath tooth enamel — producing teeth that appear amber, blue-grey, or translucent. DI-I enamel is more fragile and the enamel-dentine bond is weaker, which affects how orthodontic brackets bond to teeth and how safely they can be removed. An experienced orthodontist will adapt the bonding technique, bracket type, and debonding protocol specifically for DI-I teeth to minimise fracture risk.

Is orthodontic treatment for OI available on the NHS in the UK?

NHS orthodontic treatment for OI patients is generally available through dental hospitals and NHS craniofacial centres, particularly for children who meet the eligibility criteria under the complex needs pathway. OI-related malocclusion (especially skeletal Class III from midfacial hypoplasia) is often severe enough to qualify for NHS treatment. Adult patients may also access NHS care through hospital orthodontic departments for complex cases. Your GP, community dentist, or OI clinical network can refer you to the appropriate service. Private treatment is an option for patients who do not meet NHS criteria or prefer more control over timing.

Can jaw surgery be done safely with osteogenesis imperfecta?

Yes, orthognathic (jaw) surgery is performed in OI patients, though it requires specialist planning. The surgical team must account for bone fragility, bisphosphonate effects on bone healing, potential intraoperative fracture risk, and anaesthetic considerations specific to OI. Pre-operative bisphosphonate management, bone density assessment, and MDT coordination between oral and maxillofacial surgery, anaesthetics, and metabolic medicine are standard. Surgery is generally deferred until skeletal growth is complete and OI-related fracture frequency has stabilised. Outcomes in carefully selected patients managed in specialist centres are good.

How long does orthodontic treatment take with OI?

Treatment duration depends on the OI type, the presence of dentinogenesis imperfecta, whether bisphosphonate therapy is ongoing, and the complexity of the bite correction needed. Without bisphosphonate effects, mild OI cases may have treatment times similar to those without OI — typically 12–24 months. Patients on bisphosphonates may experience substantially longer treatment, sometimes 30–48 months for moderate cases. Where jaw surgery is needed, the combined orthodontic-surgical timeline is typically 3–4 years including pre-surgical orthodontics, the surgery itself, and post-surgical orthodontic finishing.

What type of braces are safest for people with brittle bone disease?

Clear aligners (such as Invisalign, Spark, or SureSmile) are generally considered safer for OI patients because they do not require direct bonding to the enamel, eliminating the debonding fracture risk. They also apply gentler, more distributed forces. Ceramic brackets are avoided because they require higher debonding force than metal brackets, increasing fracture risk on DI-I enamel. If fixed braces are clinically necessary (for movements aligners cannot achieve), metal brackets with modified bonding and peel-off debonding technique are preferred. The decision should be made jointly between the patient, orthodontist, and if relevant, the paediatric dentist or restorative specialist managing the OI dental care.

Which NHS centres in the UK specialise in orthodontics for OI?

In the UK, OI orthodontic care is typically provided through dental hospitals with paediatric dentistry departments and orthodontic training units — including hospitals in London, Birmingham, Manchester, Leeds, and Bristol — as well as specialist craniofacial units. The Brittle Bone Society (brittlebone.org) maintains a directory of OI clinical networks and specialist contacts. The OrthoConnect network and NHS England's specialist commissioning teams can also advise on appropriate referral pathways for complex OI cases requiring multidisciplinary management.

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Citation details

Title Osteogenesis Imperfecta and Orthodontics UK

Publisher Virtual Consultant Online

Published 2026-06-12

Updated 2026-08-25

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