---
title: "Cushing's Syndrome and Orthodontics UK — Clinical Guide"
url: https://staging.virtualconsultant.online/treatments/cushings-syndrome-orthodontics-uk
description: "Cushing's syndrome slows tooth movement and raises infection risk in orthodontics. UK guide to safe timing, steroid cover, and endocrine liaison."
updated: 2026-09-29T00:00:00Z
publisher: Virtual Consultant Online
---

Cushing's Syndrome

Endocrine Conditions

Medical Orthodontics

# Cushing's Syndrome and Orthodontics UK

Cushing's syndrome — caused by prolonged exposure to excess cortisol — affects almost every tissue relevant to orthodontic treatment. Bone density falls, tooth movement slows, wounds heal poorly, infection risk rises, blood pressure is elevated, and secondary diabetes may impair oral tissues. Patients who have undergone treatment for Cushing's face a further risk: post-treatment hypocortisolism, where the adrenal glands remain suppressed and cannot respond to the physiological stress of dental procedures. Orthodontists at Virtual Consultant Online encounter patients with Cushing's syndrome at various stages — active disease, post-surgical remission, and on long-term steroid replacement — and understanding the systemic implications of cortisol excess is essential for safe and effective treatment planning.

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## What is Cushing's syndrome and how does it affect bones and teeth?

Cushing's syndrome is a clinical condition caused by sustained elevation of cortisol — the primary glucocorticoid hormone produced by the adrenal cortex. The commonest cause in clinical practice is exogenous glucocorticoid therapy (iatrogenic Cushing's), but endogenous Cushing's arises from a pituitary adenoma secreting excess ACTH (Cushing's disease), adrenal tumours secreting cortisol directly, or ectopic ACTH-secreting tumours. Regardless of cause, the tissue effects of cortisol excess are broadly the same. In bone, cortisol suppresses osteoblast activity, reduces intestinal calcium absorption, and increases urinary calcium excretion. The net result is accelerated bone loss, leading to osteoporosis and an increased risk of fragility fractures. The alveolar bone that supports the teeth is not exempt from this process. Reduced alveolar bone density means the supporting architecture of the teeth is compromised, which has direct implications for orthodontic tooth movement, periodontal health, and the stability of final orthodontic results. Cortisol excess also impairs the function of periodontal ligament fibroblasts — the cells responsible for remodelling the connective tissue that attaches teeth to bone. This dual effect on both the bone and the periodontal ligament fundamentally alters the biology of tooth movement in patients with active Cushing's syndrome.

## How does cortisol excess slow tooth movement in orthodontics?

Orthodontic tooth movement depends on a tightly regulated cycle of bone resorption on the pressure side of the tooth and bone deposition on the tension side. This process is orchestrated by osteoclasts and osteoblasts acting within the periodontal ligament, responding to mechanical force. Cortisol disrupts both halves of this process. Osteoblast activity is directly suppressed by glucocorticoids, impairing new bone deposition on the tension side and reducing the rate at which the tooth can move into its new position. Osteoclast activity is also altered — paradoxically, while osteoclast-mediated bone resorption initially increases under cortisol excess, the chronic suppression of bone formation means the net structural result is bone loss rather than controlled remodelling. The periodontal ligament itself becomes stiffer and less responsive, with fibroblast function impaired. The clinical consequence is that orthodontic tooth movement in patients with active Cushing's syndrome proceeds more slowly than expected, and the force levels required to produce movement may differ from standard parameters. Treatment plans should anticipate extended treatment duration. In addition, when cortisol-induced osteoporosis has significantly reduced alveolar bone density, the risk of root resorption during orthodontic force application warrants monitoring. Pausing active treatment during periods of poor cortisol control, in conjunction with the patient's endocrinologist, should be considered.

## Infection risk and wound healing — implications for brackets and procedures

Cortisol is a potent immunosuppressant. At elevated levels it suppresses both innate and adaptive immune responses — reducing the activity of neutrophils, macrophages, T lymphocytes, and natural killer cells. For orthodontic patients with active Cushing's syndrome, this creates a clinically relevant risk of oral infection. Bacterial plaque accumulation around fixed appliances can trigger periodontal infection that, in an immunosuppressed host, progresses more rapidly and to greater severity than in an immunocompetent patient. Bracket bonding and debonding procedures, ligature wire placement, and particularly any procedure that breaches the mucosa — such as temporary anchorage device (TAD) placement or surgical exposure of impacted teeth — carry a higher infection risk. Wound healing is also impaired. Cortisol excess reduces the proliferative phase of wound healing, suppresses fibroblast activity, and decreases collagen synthesis. Mucosal wounds from orthodontic trauma — a loose bracket, a protruding wire end, a removable appliance causing soft tissue pressure — will take longer to resolve and are more susceptible to secondary infection. Orthodontic teams should reinforce meticulous oral hygiene at every appointment, consider antiseptic mouthwash prescriptions, and liaise with the patient's endocrinologist or physician before planning any invasive procedure. Prophylactic antibiotics for mucosal-breaching procedures should be discussed with the prescribing clinician.

## Hypertension, epinephrine in local anaesthetic, and safe dental management

Hypertension is present in the majority of patients with active Cushing's syndrome. Cortisol exerts mineralocorticoid effects that promote sodium and water retention, raising blood pressure. In some patients, cortisol excess also increases catecholamine sensitivity, amplifying the cardiovascular response to sympathomimetic agents. This has direct implications for the use of local anaesthetic containing epinephrine (adrenaline) in dental and orthodontic procedures. Epinephrine is included in most dental local anaesthetic formulations because it produces vasoconstriction, prolongs the duration of anaesthesia, and reduces systemic absorption. In hypertensive patients with Cushing's syndrome, epinephrine may cause significant blood pressure elevation and tachycardia, particularly if inadvertently injected intravascularly. For orthodontic procedures requiring local anaesthetic — TAD placement, surgical exposure of impacted teeth, frenectomy — liaison with the patient's physician is essential to establish current blood pressure control and determine the safe approach to local anaesthesia. Many guidelines recommend limiting epinephrine-containing solutions in poorly controlled hypertensive patients and using a careful aspiration technique. Felypressin-based vasoconstrictors may be considered as an alternative in consultation with the prescribing clinician. Blood pressure should be checked before any procedure in patients with known Cushing's syndrome, and elective procedures should be deferred if blood pressure is significantly elevated.

## Secondary diabetes and oral health during orthodontic treatment

Cortisol promotes gluconeogenesis and induces insulin resistance in peripheral tissues. In patients with Cushing's syndrome, this results in impaired glucose tolerance, steroid-induced hyperglycaemia, or overt secondary diabetes mellitus. Secondary diabetes in Cushing's syndrome shares the oral health consequences of type 2 diabetes: elevated blood glucose promotes proliferation of periodontal pathogens, impairs neutrophil function in the gingival crevice, and reduces the vascular response to infection. Periodontal disease is both more prevalent and more severe in patients with poorly controlled diabetes, and the bidirectional relationship between periodontal inflammation and glycaemic control means that worsening periodontal disease can make blood sugar harder to control. For orthodontic patients, this combination — fixed appliances increasing plaque retention, immune suppression from cortisol, and impaired glucose tolerance from secondary diabetes — creates a compounding risk to periodontal health. Clinical monitoring at every appointment should include assessment of gingival inflammation. Any deterioration in periodontal status should prompt referral to a periodontist before orthodontic treatment continues. The patient's diabetic control should be communicated by the endocrinology team, and treatment intensity should be moderated during periods of poor glycaemic control. Wound healing after any procedure will also be slower in the presence of hyperglycaemia, adding to the infection risk noted above.

## Immunosuppression — managing orthodontic appointments safely

The immunosuppressive effects of cortisol excess extend beyond the periodontal tissues. Patients with active Cushing's syndrome have broadly impaired immune defence, making them susceptible to bacterial, viral, and fungal infections. Oral candidiasis — thrush — is more common in immunosuppressed patients, particularly under orthodontic appliances where reduced salivary clearance occurs. Herpetic reactivation, causing intraoral ulceration, is also more likely. Orthodontic teams should be alert to unusual or persistent intraoral lesions and refer promptly rather than assuming trauma from appliances is the sole cause. The appointment environment itself requires consideration. Patients with active Cushing's syndrome who are significantly immunosuppressed should not attend the practice when presenting with signs of infection, and infection control protocols must be rigorously observed. Fixed appliances may be preferable to removable appliances because compliance with removable appliances tends to be less reliable, and the frequent insertion and removal of appliances increases the risk of mucosal trauma. More frequent short appointments — reducing the duration of each manipulation episode — may reduce procedural stress. Any planned surgical procedure, including TAD placement, should be discussed with the patient's endocrinology team well in advance, with explicit planning for post-operative monitoring.

## Steroid cover before orthodontic procedures and managing hypocortisolism

One of the most clinically important considerations in patients who have been treated for Cushing's syndrome is the risk of adrenal crisis during and after procedures. When Cushing's syndrome is caused by a cortisol-secreting adrenal tumour and the tumour is removed, or when pituitary Cushing's disease is treated by transsphenoidal surgery or radiotherapy, the recovery of adrenal function is not immediate. The contralateral adrenal gland — and the hypothalamic-pituitary axis — may remain suppressed for months to years after successful treatment. During this period of hypocortisolism, the patient cannot mount the normal cortisol stress response that surgery, pain, or procedural anxiety would ordinarily trigger. The consequence is that a seemingly minor procedure — a TAD insertion, a surgical exposure, even a prolonged and stressful appointment — can precipitate an adrenal crisis: profound hypotension, collapse, and cardiovascular instability. Steroid cover — additional glucocorticoid given before and around the procedure — is the standard preventive measure. The specific regimen depends on the degree of adrenal suppression, the nature of the procedure, and the patient's usual steroid replacement dose. This must be determined by the patient's endocrinologist. Orthodontists should never assume that a patient treated for Cushing's syndrome has fully recovered adrenal function without written confirmation from the endocrinology team. Patients receiving ongoing hydrocortisone or prednisolone replacement must also be assessed individually, as their baseline replacement may be insufficient to cover significant physiological stress. The patient's steroid alert card or emergency action plan should be present at every appointment.

## Timing orthodontic treatment around cortisol normalisation

The decision of when to begin or resume orthodontic treatment in a patient with Cushing's syndrome requires co-ordination with the endocrinology team and depends on the stage of cortisol normalisation. Active Cushing's syndrome with elevated cortisol represents the highest-risk period for orthodontic treatment: bone loss is ongoing, immune function is suppressed, wound healing is impaired, and the biological environment for tooth movement is suboptimal. Elective orthodontic treatment should generally be deferred until cortisol levels are controlled or normalised where possible. For patients pursuing curative treatment — surgical removal of an adrenal tumour, transsphenoidal pituitary surgery, or bilateral adrenalectomy — there is a predictable trajectory of cortisol normalisation following successful intervention. Biochemical remission, confirmed by the endocrinology team through serum or urine cortisol measurements, provides the clearest indication that the systemic environment is improving. Even after biochemical remission, bone density may take eighteen to twenty-four months to recover partially, and the periodontal tissues will need time to stabilise. Orthodontic treatment initiated too early after cortisol normalisation may still encounter slower-than-expected tooth movement and residual periodontal fragility. For patients with iatrogenic Cushing's on long-term glucocorticoid therapy who cannot have their steroid dose reduced, treatment planning must accept these systemic constraints as permanent features of the clinical context. A modified treatment plan — shorter total treatment duration, reduced force levels, more frequent monitoring — is appropriate. The patient's physician, endocrinologist, and orthodontist should maintain open communication throughout.

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### Frequently Asked Questions

Can I have orthodontic treatment if I have Cushing's syndrome?

Orthodontic treatment is possible with Cushing's syndrome, but active cortisol excess significantly increases the risks and reduces the biological efficiency of tooth movement. Treatment is best planned in collaboration with the patient's endocrinologist, and where possible should be timed to coincide with periods of better cortisol control or after successful treatment of the underlying cause. During active disease, elective orthodontic treatment is often better deferred. Where treatment cannot wait, modified plans with reduced forces, shorter treatment phases, and heightened periodontal monitoring are appropriate. Virtual Consultant Online can help co-ordinate the clinical assessment needed to make this decision.

How does cortisol excess slow tooth movement during orthodontics?

Cortisol suppresses osteoblast activity, reducing new bone deposition on the tension side of moving teeth. It also impairs periodontal ligament fibroblast function, making the connective tissue less responsive to mechanical force. The combined effect is that teeth move more slowly than expected under standard orthodontic force. Treatment duration should be planned to be longer than average, and the endocrinology team should be updated on cortisol control throughout treatment so that timing of active tooth movement phases can be adjusted accordingly.

Do I need steroid cover before orthodontic procedures with Cushing's syndrome?

Patients who have been treated for Cushing's syndrome — by surgery, radiotherapy, or medical therapy — may have suppressed adrenal function (hypocortisolism) and cannot mount a normal cortisol stress response. For any procedure involving stress, pain, or anxiety — including TAD placement, surgical exposure of impacted teeth, or even prolonged difficult appointments — steroid cover may be required to prevent an adrenal crisis. The specific need for steroid cover and the appropriate regimen must be determined by the patient's endocrinologist. Orthodontists should always confirm adrenal status in writing from the endocrinology team before any invasive procedure.

Does Cushing's syndrome increase the risk of infections during orthodontic treatment?

Yes. Cortisol is a potent immunosuppressant, and Cushing's syndrome broadly impairs immune defence, including in the periodontium. Fixed appliances increase plaque retention, and if the immune response is compromised, periodontal infection can develop and progress rapidly. The risk is compounded in patients with secondary diabetes. Meticulous oral hygiene, antiseptic mouthwash use, regular periodontal monitoring, and antibiotic cover for mucosal-breaching procedures are all important risk-reduction measures. Any unusual mucosal lesion should be assessed promptly rather than attributed to appliance trauma without clinical review.

How does secondary diabetes from Cushing's syndrome affect orthodontic treatment?

Cortisol-induced secondary diabetes impairs the immune response in the gingival crevice, promotes growth of periodontal pathogens, and significantly worsens periodontal disease susceptibility. Together with the immunosuppressive effects of cortisol itself, secondary diabetes creates a compounding risk to periodontal health during orthodontic treatment. Poor glycaemic control also delays wound healing after any procedure. Orthodontic treatment in a patient with secondary diabetes should be co-ordinated with the endocrinology team, and glycaemic control should be as good as achievable before proceeding with any surgical element of treatment.

When should I start orthodontic treatment after surgery or treatment for Cushing's syndrome?

The timing depends on the pace of cortisol normalisation and bone density recovery. Biochemical remission — confirmed by the endocrinology team through cortisol measurements — marks the beginning of recovery, but bone density may take eighteen to twenty-four months to partially restore, and the periodontal tissues require stabilisation. Elective orthodontic treatment is generally best delayed until biochemical remission is confirmed and the endocrinology team considers adrenal function adequately recovered. Even then, a cautious approach with modified force levels and close monitoring is appropriate during the early post-remission period.

What is the NHS pathway for orthodontics with complex medical conditions like Cushing's syndrome?

NHS orthodontic treatment for patients with complex medical conditions including Cushing's syndrome is available through consultant orthodontists in secondary care. Referral is made by the GP or endocrinologist to an NHS hospital orthodontic department, where the consultant orthodontist can liaise directly with the endocrinology team. Treatment is typically funded under NHS Band 3 for adults or as part of the children's orthodontic programme. Complex cases requiring surgical elements — such as orthognathic surgery or surgical exposure of impacted teeth — are managed jointly between the orthodontic and maxillofacial surgical teams. Patients seeking a preliminary independent assessment can use the Virtual Consultant Online platform before entering the NHS pathway.

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Citation details

Title Cushing's Syndrome and Orthodontics UK — Clinical Guide

Publisher Virtual Consultant Online

Published 2026-06-28

Updated 2026-09-29

URL [https://staging.virtualconsultant.online/treatments/cushings-syndrome-orthodontics-uk](https://staging.virtualconsultant.online/treatments/cushings-syndrome-orthodontics-uk)