MRONJ / ORN
Overview
Medication-Related Osteonecrosis of the Jaw (MRONJ) and Osteoradionecrosis of the Jaw (ORN) are conditions involving compromised jawbone healing. They are most commonly associated with certain medications or previous radiation therapy to the head and neck.
Management focuses on careful assessment, risk reduction, and collaboration with the patient’s broader medical and dental team.
When MRON or ORN May Be Considered
Assessment for MRONJ or ORN may be required when:
A patient has a history of antiresorptive or antiangiogenic medications
Previous radiation therapy has involved the jaw region
Delayed healing occurs following dental procedures
Areas of exposed bone are present
Jaw discomfort or infection develops in at-risk patients
Early assessment helps guide appropriate management.
Assessment and Risk Evaluation
Evaluation typically involves:
Review of medical and medication history
Clinical examination of the oral tissues and bone
Radiographic imaging where appropriate
Communication with the referring dentist and medical practitioners
Risk assessment is individualised for each patient.
Management Approach
Management of MRON or ORN may include:
Conservative monitoring where appropriate
Medical management in collaboration with treating doctors
Surgical intervention in selected cases
Preventive planning prior to dental treatment
Treatment strategies are tailored to the clinical presentation and overall health context.
Ongoing Care and Monitoring
Care commonly involves:
Regular review appointments
Emphasis on oral hygiene and infection control
Coordination with referring clinicians
Long-term monitoring where indicated
Management aims to minimise progression and support oral health.
Collaboration With Referring Dentists and Medical Teams
We work closely with referring dentists, general practitioners, oncologists, and other specialists to ensure care is coordinated, appropriate, and aligned with each patient’s medical history.
Frequently Asked Questions
What is the difference between MRONJ and ORN?
MRON is associated with certain medications, while ORN is related to previous radiation therapy affecting the jaw.
Why is careful planning important for these conditions?
Jawbone healing may be compromised, so treatment decisions require careful risk assessment.
Can dental treatment still be performed?
Dental care may still be possible, but requires modified planning and close monitoring.
How is management determined?
Management is based on clinical findings, medical history, and collaboration with the patient’s healthcare team.
Is long-term follow-up required?
Some patients benefit from ongoing monitoring depending on risk factors and clinical presentation.