# The Orthodontic Consent Process: What GDC Standards Require and How to Get It Right

Publisher: Virtual Consultant Online
Author: Virtual Consultant Online
Published: 2026-07-30
Updated: 0001-01-01
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Consent in orthodontic practice is one of the most clinically and legally significant processes in patient care. When a complaint or negligence claim arises from an orthodontic treatment outcome, the quality of the consent process is almost always a central issue. Was the patient given enough information to make a genuine choice? Were the risks and limitations of treatment explained clearly? Did the clinician document the consent process in a way that demonstrates what was communicated and that the patient understood and agreed?

This guide covers what GDC Standards require from the orthodontic consent process , the specific information that must be shared with patients, the documentation that should be created, and the practical approaches that make consent a clinically genuine part of the patient journey rather than a form-signing exercise.

Key takeaway

Valid consent for orthodontic treatment requires three elements: the patient must have capacity, the consent must be voluntary, and the patient must be given sufficient information to make a genuine informed choice — including the treatment options, the limitations and risks of each option, the expected outcomes and likely timeframes, the cost, and the possibility of doing nothing. The Supreme Court’s 2015 ruling in Montgomery v Lanarkshire Health Board shifted the standard from “what a reasonable clinician would tell a patient” to “what the specific patient would want to know in their specific circumstances”. This means the consent conversation must be tailored, two-way, and documented as such — not a standardised script followed the same way for every patient.

## What GDC Standards Require on Consent

GDC Standard 3 — “Obtain valid consent” — sets out the core requirements for dental professionals. For orthodontic practices, the key obligations are:

Ensure the patient (or, for a child, their parent or guardian) has the information they need to make a genuinely informed decision about treatment

Explain all treatment options available, including no treatment

Give a realistic assessment of the likely outcomes of each option, and of no treatment

Explain the material risks of the proposed treatment in terms the patient can understand — not just the risks a clinician considers significant, but the risks the specific patient would want to know about

Confirm the patient understands what has been explained, and create an opportunity for them to ask questions

Document the consent process — including what was discussed, that the patient had the opportunity to ask questions, and that they agreed to proceed

For children, assess and document Gillick competence for patients aged under 16 and obtain parental consent where the child is not Gillick competent

Montgomery

2015 Supreme Court ruling that shifted the consent standard to what the specific patient would want to know — not what the clinician decides to tell them

GDC Standard 3

The core GDC consent requirement — valid consent must be informed, voluntary, and given by a patient with capacity

Documented

A consent discussion that is not documented is effectively the same as one that did not happen — for complaint and claim purposes

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## Information That Must Be Shared in the Orthodontic Consent Process

The specific information that should be discussed and documented in the orthodontic consent process includes:

The proposed treatment: what it involves, the appliance type (fixed, removable, aligner), approximate duration, number of appointments, and what the patient will experience during treatment

Treatment alternatives: including other appliance options that could address the clinical presentation, and the option to not treat — with an honest assessment of what the clinical situation is likely to do without treatment

Expected outcomes: a realistic description of what the treatment can achieve and its limitations — what the teeth will look like after treatment, and anything the treatment cannot address (skeletal discrepancies, periodontal limitations, etc.)

Material risks: root resorption, decalcification from poor oral hygiene, relapse if retention is not maintained, gum recession in adults, the possibility of treatment extension beyond the stated duration, and any specific risks relevant to the patient’s clinical presentation

Patient obligations: what the patient must do — compliance with aligners, elastics, oral hygiene, retainer wear — for treatment to succeed. The consequences of non-compliance should be stated explicitly.

Cost: the total fee, payment terms, and what happens financially if treatment is extended beyond the original plan or if the patient withdraws mid-treatment

Retention: that orthodontic treatment without lifelong retention is likely to relapse, and what the retainer regimen will involve and cost

## Documentation: What to Record and When

The clinical notes from the consent consultation are the primary evidence in any complaint or claim relating to inadequate consent. A complaint that the patient “was never told about relapse risk” is very difficult to defend if the clinical records contain only a signed consent form with no contemporaneous notes. Conversely, detailed clinical notes that record what was discussed, the patient’s questions, the explanations given, and the patient’s verbal confirmation of understanding are strong evidence in the clinician’s defence.

At the consultation: record what treatment options were discussed, which was recommended and why, the risks and limitations explained (specifically), the patient’s questions, and their response to the information given

The consent form: use a written consent form that is specific to orthodontic treatment (not a generic dental consent form), covers the key risks, and is signed and dated by the patient before treatment begins. A signed consent form without supporting clinical notes is not sufficient on its own — it proves the patient signed something, not what they were told.

Give the patient time: for complex cases, a decision period between the consultation and the treatment start is best practice — the patient receives a written treatment summary (or patient letter) that they can take away, review, and use to formulate further questions before committing. Document that this was offered.

Important

Consent for orthodontic treatment is not a one-time event at the start of treatment — it is an ongoing process. If the treatment plan changes during treatment (for example, additional treatment needed, a risk materialises, the expected duration changes significantly), the patient must be re-consented to the new plan with fresh discussion and documentation. Continuing treatment beyond the original consent without informing the patient of the change and obtaining fresh agreement exposes the practice to a claim that treatment was carried out outside the scope of the original consent. If a patient develops decalcification during treatment, document specifically that this was noted, the patient was informed, its significance was explained, and the patient’s decision about how to proceed was recorded.

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## FAQs

### What does valid consent for orthodontic treatment require?

Valid consent for orthodontic treatment requires three elements: the patient must have capacity (be able to understand, retain, and use the information provided to make a decision), the consent must be voluntary (free from undue pressure), and the patient must be given sufficient information to make a genuinely informed choice. This information includes the proposed treatment, the available alternatives, the realistic expected outcomes, the material risks, the patient’s own compliance obligations, the cost, and the retention requirements after treatment ends. Following the 2015 Montgomery ruling, the information standard is based on what the specific patient would want to know — not what the clinician considers routine to disclose.

### What risks must be disclosed in the orthodontic consent process?

The material risks that must be discussed in the orthodontic consent process include: root resorption (shortening of tooth roots, which occurs to a variable degree in most orthodontic treatment), decalcification and enamel damage from poor oral hygiene during treatment, relapse if retainers are not worn as directed, gum recession in adult patients (particularly for cases with existing periodontal history), the possibility of treatment extending beyond the originally stated duration, and any patient-specific risks relevant to their clinical presentation. Risks must be explained in terms the patient can understand — not clinical jargon — and the patient must be given the opportunity to ask questions about them.

### How should orthodontic consent be documented?

Orthodontic consent should be documented through a combination of contemporaneous clinical notes from the consent consultation (recording what was discussed, the patient’s questions, the explanations given, and the patient’s response) and a signed orthodontic-specific consent form. The clinical notes are the more important document — a signed form without supporting notes proves only that the patient signed something, not what they were told. For complex cases, a written treatment summary letter given to the patient before they sign provides a contemporaneous record of the information shared and evidence that the patient had time to consider it. All consent documentation should be retained as part of the patient record.

### At what age can a child consent to orthodontic treatment?

In England, Wales, and Northern Ireland, children aged 16 and 17 have a statutory right to consent to dental treatment under the Family Law Reform Act 1969. Children under 16 may consent if they are assessed as Gillick competent — that is, they have sufficient maturity and understanding to comprehend what the treatment involves, its risks and alternatives, and the consequences of accepting or declining it. For children who are not Gillick competent, consent must be obtained from a parent or someone with parental responsibility. In Scotland, the Age of Legal Capacity (Scotland) Act 1991 applies, with a similar principle of capacity-based consent for children under 16. The assessment of Gillick competence and the identity of the consenting adult must be documented in the patient record.

### What does valid consent for orthodontic treatment require?

Valid consent for orthodontic treatment requires three elements: the patient must have capacity (be able to understand, retain, and use the information provided to make a decision), the consent must be voluntary (free from undue pressure), and the patient must be given sufficient information to make a genuinely informed choice. This information includes the proposed treatment, the available alternatives, the realistic expected outcomes, the material risks, the patient’s own compliance obligations, the cost, and the retention requirements after treatment ends. Following the 2015 Montgomery ruling, the information standard is based on what the specific patient would want to know — not what the clinician considers routine to disclose.

### What risks must be disclosed in the orthodontic consent process?

The material risks that must be discussed in the orthodontic consent process include: root resorption (shortening of tooth roots, which occurs to a variable degree in most orthodontic treatment), decalcification and enamel damage from poor oral hygiene during treatment, relapse if retainers are not worn as directed, gum recession in adult patients (particularly for cases with existing periodontal history), the possibility of treatment extending beyond the originally stated duration, and any patient-specific risks relevant to their clinical presentation. Risks must be explained in terms the patient can understand — not clinical jargon — and the patient must be given the opportunity to ask questions about them.

### How should orthodontic consent be documented?

Orthodontic consent should be documented through a combination of contemporaneous clinical notes from the consent consultation (recording what was discussed, the patient’s questions, the explanations given, and the patient’s response) and a signed orthodontic-specific consent form. The clinical notes are the more important document — a signed form without supporting notes proves only that the patient signed something, not what they were told. For complex cases, a written treatment summary letter given to the patient before they sign provides a contemporaneous record of the information shared and evidence that the patient had time to consider it. All consent documentation should be retained as part of the patient record.

### At what age can a child consent to orthodontic treatment?

In England, Wales, and Northern Ireland, children aged 16 and 17 have a statutory right to consent to dental treatment under the Family Law Reform Act 1969. Children under 16 may consent if they are assessed as Gillick competent — that is, they have sufficient maturity and understanding to comprehend what the treatment involves, its risks and alternatives, and the consequences of accepting or declining it. For children who are not Gillick competent, consent must be obtained from a parent or someone with parental responsibility. In Scotland, the Age of Legal Capacity (Scotland) Act 1991 applies, with a similar principle of capacity-based consent for children under 16. The assessment of Gillick competence and the identity of the consenting adult must be documented in the patient record.

## References

- GDC — Standards for the dental team: Standard 3 — Obtain valid consent (https://www.gdc-uk.org/standards-guidance/standards-and-guidance/standards-for-the-dental-team) - GDC’s Standard 3 on valid consent for dental and orthodontic treatment, covering the requirements for informed, voluntary, and capacitous consent, the specific information that must be shared with patients, the obligations around children’s consent and Gillick competence, and the documentation standards expected of all GDC registrants.
- Montgomery v Lanarkshire Health Board [2015] UKSC 11 — Supreme Court consent ruling (https://www.supremecourt.uk/cases/uksc-2013-0136.html) - The 2015 UK Supreme Court ruling in Montgomery v Lanarkshire Health Board, which established that the standard for informed consent is what the specific patient would want to know in their specific circumstances — shifting from the Bolam clinician-centred standard to a patient-centred standard that directly affects how orthodontic consent must be approached and documented.
- British Orthodontic Society — Consent in orthodontic practice: clinical guidance (https://www.bos.org.uk/orthodontists/clinical-practice) - BOS clinical guidance on the consent process in orthodontic practice, covering the specific risk disclosures required for orthodontic treatment, the documentation standards expected for consent conversations, the approach to consent for under-18 patients, and the process for re-consenting patients when a treatment plan changes during active orthodontic care.
- GDC — Standards for the dental team: Standard 3 — Obtain valid consent (https://www.gdc-uk.org/standards-guidance/standards-and-guidance/standards-for-the-dental-team) - GDC’s Standard 3 on valid consent for dental and orthodontic treatment, covering the requirements for informed, voluntary, and capacitous consent, the specific information that must be shared with patients, the obligations around children’s consent and Gillick competence, and the documentation standards expected of all GDC registrants.
- Montgomery v Lanarkshire Health Board [2015] UKSC 11 — Supreme Court consent ruling (https://www.supremecourt.uk/cases/uksc-2013-0136.html) - The 2015 UK Supreme Court ruling in Montgomery v Lanarkshire Health Board, which established that the standard for informed consent is what the specific patient would want to know in their specific circumstances — shifting from the Bolam clinician-centred standard to a patient-centred standard that directly affects how orthodontic consent must be approached and documented.
- British Orthodontic Society — Consent in orthodontic practice: clinical guidance (https://www.bos.org.uk/orthodontists/clinical-practice) - BOS clinical guidance on the consent process in orthodontic practice, covering the specific risk disclosures required for orthodontic treatment, the documentation standards expected for consent conversations, the approach to consent for under-18 patients, and the process for re-consenting patients when a treatment plan changes during active orthodontic care.
