MRI safety: MRI and fixed orthodontic appliances

Evaluation of Radio Frequency-Induced Heating near Fixed Orthodontic Appliances during MRI Examination at 3 Tesla

The purpose of this paper is to assess the added risk pose by radio frequency (RF) induced heating near fixed orthodontic appliances in patients undergoing MRI examination at 3 Tesla. Three of the most commonly used types of fixed orthodontic appliances: Palatal expander (Hyrax) Lingual Bar and Multibracket-/-band braces were investigated using a head phantom and positioned to match the in-vivo...

Safety Considerations on MRI Systems for Firefighters and Paramedics

Background and Objectives: The use of Magnetic Resonance Imaging (MRI) systems is on the rise and the number of installed systems is constantly increasing all over the world. This raises the possibility for emergency personnel to get in contact with these systems. However, the clothing and working material of paramedics and firefighters is not designed for the use on magnets. M...

Orthodontic Appliances

Orthodontic Appliances

Effect of fixed orthodontic appliances on salivary properties

BACKGROUND So far, a few studies have tried to investigate the relationship between the placement of fixed orthodontic appliances and the change of nonmicrobial salivary properties, mostly with conflicting outcomes and short-term assessment (up to 6 months from bracket placement). The purpose of this study was to evaluate the salivary flow rate, pH and buffer capacity prior to the beginning of ...