Selected muscle tone and asymmetry of the occlusal plane in case of intracapsular temporomandibular joint disorder.

: To discover the extent of the connection between occlusal plane asymmetry and the rest tone of the four muscle groups of the orofacial region with temporomandibular joint pathology.: Eighty-seven subjects were divided into two groups. The following methods were applied: clinical examination, roentgenological examination, and electromyography.

The neuromuscular approach towards interdisciplinary cooperation in medicine.

Background: The contemporary approach of dentistry towards interdisciplinary cooperation is based on the neuromuscular concept. In recent years many authors have pointed out a correlation between orthopaedic and dental findings. Furthermore, there is an intimate biomechanical interrelationship of occlusion with cerebral fluid circulation, left and right equilibrium, gaze stabilisation and headache.

Magnetic susceptibility and electrical conductivity of metallic dental materials and their impact on MR imaging artifacts.

Objectives: The aim of this study was to test the hypothesis that dental materials vary significantly in MR-relevant material parameters-magnetic susceptibility and electrical conductivity, and that knowledge of these parameters may be used to estimate the quality of MR imaging in the presence of devices made of such materials.

Methods: Magnetic susceptibility, electrical conductivity and artifacts were evaluated for 45 standardized cylindrical samples of dental alloys and amalgams. Magnetic susceptibility was determined by fitting the phase of gradient-echo MR images to numerically modeled data.

Dental alloys and magnetic resonance imaging.

The aim of this review article is to describe the behaviour of dental alloys during the magnetic resonance imaging procedure. Mechanical and physical effects of a high frequency magnetic field are discussed. They may cause a movement or heating of metal objects present in the body, which can lead to a potential health risk for patients undergoing this examination.

Dental materials and magnetic resonance imaging.

The objective of this investigation was to evaluate the reaction of selected dental materials in the magnetic field of a magnetic resonance imaging device to determine a possible health risk. The following dental materials were tested in vitro during magnetic resonance imaging: 15 dental alloys, four dental implants, one surgical splint and two wires for fixation of maxillofacial fractures. Possible artefacts (corresponding with magnetic properties), heating and force effects were tested.