title: The influence of different registration positions on condyle displacement in symptomatic patients.
abstract: OBJECTIVE
  This study aimed to evaluate effects of different registration positions on the condyle-disk position changes in the mandibular fossa in symptomatic individuals.
  
  
  METHODS
  Vertical and sagittal condyle position and thickness of the bilaminar zone were measured by magnetic resonance imaging during maximal intercuspation (MI) and with jigs in Gothic arch tracing guided centric relation (DIR method [Dynamics and Intraoral Registration]) and retruded contact position (RCP). Participants were 26 patients seeking treatment for temporomandibular disorders. Condyle and disk position in the fossa were calculated in the parasagittal plane.
  
  
  RESULTS
  Significant differences were found for MI, DIR, and RCP for thickness of bilaminar zone and sagittal condyle position, dependent on diagnosis and registration position for vertical and sagittal condyle position and thickness of bilaminar zone.
  
  
  CONCLUSIONS
  DIR position ensures the widest posterior space for the retrodiskal tissues and the slightest sagittal difference between condyle zenith and glenoid fossa.
authors: Associate Professor, Department of Prosthodontics, Preclinical Education and Dental Material Science, University of Bonn School of Dentistry, Bonn, Germany. Electronic address: sabinelinsen@web.de.
authors: Sabine S
authors: SS
authors: Linsen
authors: Private dental practice, Remscheid, Germany.
authors: Farina
authors: F
authors: Blattner
authors: Professor, Center of Anatomy of Danube Private University, Krems, Austria.
authors: Udo
authors: U
authors: Stratmann
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D008279:Magnetic Resonance Imaging; D008297:Male; D008335:Mandibular Condyle / Q000473:pathology*; D008875:Middle Aged; D019224:Temporomandibular Joint Disc / Q000473:pathology*; D013705:Temporomandibular Joint Disorders / Q000473:pathology* / Q000628:therapy