title: Assessment of the TMJ Dysfunction Using the Computerized Facebow Analysis of Selected Parameters.
abstract: OBJECTIVE
  Qualitative and quantitative analysis of selected parameters of mandible movements, electronically registered in patients with temporomandibular joint dysfunction and healthy ones.
  
  
  METHODS
  Function test of the mandible movements was conducted in 175 patients. Gender distribution was 143 women and 32 men, aged 9 to 84.
  
  
  METHODS
  The studied population, after accurate clinical examination, was divided into age groups with the range of five years. All the patients had Zebris JMA computerized facebow examination done, according to the generally accepted principles and procedures.
  
  
  RESULTS
  Mean values of mouth opening calculated to 45.6 mm in healthy group and 37.6 mm in TMJ dysfunction group. Mean length of condylar path amounted to 39 ± 7% of the maximum value of mouth opening in the group of healthy people, 44 ± 11% in the case of muscle-based disorders, and 35 ± 11% with joint-based. The mean value of the condylar path inclination oscillated in the range of 25° to 45°.
  
  
  CONCLUSIONS
  The ratio of length of the condylar path to the size of mouth opening may be a significant value characterising the type and degree of intensification of the TMJ dysfunctions.
authors.affiliation: Department of Prosthetic Dentistry, Faculty of Medicine and Dentistry, Pomeranian Medical University, Rybacka 1, 70-204 Szczecin, Poland.
authors.forename: Edward
authors.identifier: 0000-0003-4110-5987
authors.initials: E
authors.lastname: Kijak
authors.affiliation: Department of Dental Propedeutics and Physiodiagnostics, Pomeranian Medical University, Rybacka 1, 70-204 Szczecin, Poland.
authors.forename: Danuta
authors.initials: D
authors.lastname: Lietz-Kijak
authors.affiliation: Department of Prosthetic Dentistry, Faculty of Medicine and Dentistry, Pomeranian Medical University, Rybacka 1, 70-204 Szczecin, Poland.
authors.forename: Bogumiła
authors.initials: B
authors.lastname: Frączak
authors.affiliation: Institute of Physiotherapy, Jan Kochanowski University, Żeromskiego 5, 25-369 Kielce, Poland.
authors.forename: Zbigniew
authors.identifier: 0000-0001-7402-1793
authors.initials: Z
authors.lastname: Śliwiński
authors.affiliation: Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland.
authors.forename: Jerzy
authors.identifier: 0000-0003-2249-4059
authors.initials: J
authors.lastname: Margielewicz
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000503:physiopathology*; D008335:Mandibular Condyle / Q000503:physiopathology*; D008875:Middle Aged; D009068:Movement; D016059:Range of Motion, Articular; D013704:Temporomandibular Joint / Q000503:physiopathology*; D013706:Temporomandibular Joint Dysfunction Syndrome / Q000503:physiopathology*