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Updated: Feb 24, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
Electromagnetic interference of dental equipment with implantable cardioverter defibrillators
Manoela Teixeira de Sant'Anna Dadalti1, Antônio José Ledo Alves da Cunha2, Marcos César Pimenta de Araújo1
1a Department of Clinical Dentistry, School of Dentistry , Federal University of Rio de Janeiro , Rio de Janeiro , Brazil.
Objective:
Implantable cardioverter defibrillators (ICDs) are subject to electromagnetic interference (EMI). The aim of this study was to assess both the EMI of dental equipments with ICDs and related factors.
Materials And Methods:
High- and low-speed handpieces, an electric toothbrush, an implant motor and two types of ultrasonic devices were tested next to an ICD with different sensitivity settings. The ICD was immersed in a saline solution with electrical resistance of 400-800 ohms to simulate the resistance of the human body. The dental equipments were tested in both horizontal (0°) and vertical (90°) positions in relation to the components of the ICD. The tests were performed with a container containing saline solution, which was placed on a dental chair in order to assess the cumulative effect of electromagnetic fields.
Results:
The dental chair, high- and low-speed handpieces, electric toothbrush, implant motor and ultrasonic devices caused no EMI with the ICD, irrespective of the program set-up or positioning. No cumulative effect of electromagnetic fields was verified.
Conclusions:
The results of this study suggest that the devices tested are safe for use in patients with an ICD.
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