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References

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Görgülü S, Ayyıldız S, Kamburoğlu K, Gökçe S, Ozen T. Effect of orthodontic brackets and different wires on radiofrequency heating and magnetic field interactions during 3-T MRI. Dentomaxillofac Rad. 2014; 43
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Ozawa E, Honda E, Parakonthun KN, Ohmori H, Shimazaki K, Kurabayashi T, Ono T. Influence of orthodontic appliance-derived artifacts on 3-T MRI movies. Prog Orthod. 2018; 19
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An Evidence-based Protocol for the Management of Orthodontic Patients Undergoing MRI Scans

From Volume 14, Issue 1, January 2021 | Pages 32-35

Authors

Rachael Shivam

BDS(Lond), MJDF RCS(Eng)

Dental Core Trainee in Oral and Maxillofacial Surgery, Poole Hospital, Poole Hospital NHS Foundation Trust, Poole

Articles by Rachael Shivam

Email Rachael Shivam

Sheelagh Rogers

BDS, MFDS RCS(Ed), MScD, MOrth RCS(Ed)

FTTA in Orthodontics

Articles by Sheelagh Rogers

Abstract

Magnetic resonance imaging (MRI) uses strong magnetic fields, magnetic gradients and radio waves to produce images of the body. The demand for MRI is steadily increasing as it does not use ionizing radiation and has excellent soft tissue contrast. Certain materials used in components of fixed orthodontic appliances can cause unwanted effects and affect the diagnostic quality of MR images by producing artefacts. This article proposes an evidence-based protocol that aims to standardize the management of orthodontic patients undergoing MRI scans.

CPD/Clinical Relevance: As the use of MRI continues to increase, it is becoming more likely that orthodontists will encounter patients requiring MRI scans of the head and neck region during the course of their orthodontic treatment.

Article

The effects of dental materials on Magnetic Resonance Imaging (MRI) have long been studied. Many materials, including certain components of fixed orthodontic appliances, can cause unwanted effects such as radiofrequency-induced heating, magnetically-induced displacement and artefact formation when placed in MRI scanners; this can result in inaccurate diagnoses and treatment.1 An onus is therefore placed on the orthodontist to decide which components should be removed before their patients undergo MRI scans. There are currently no guidelines or protocols available to facilitate this decision, and often, all components are removed prior to the investigation taking place.2,3,4,5 This can be costly and time-consuming, lengthen treatment time and cause enamel damage.4,5,6,7,8 An increasing number of orthodontic patients who require MRI scans are presenting at Cardiff Dental Hospital. A need was identified for an evidence-based protocol that aids the clinician in the management of these patients.

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