Occlusal Change as a Sequela of Anterior Disc Displacement without Reduction of Temporomandibular Joint: Case Reports

관절원판전위와 갑작스런 교합변화가 발생한 환자의 임상증례 및 원인에 관한 보고

  • Hur, Yun-Kyung (Department of Oral medicine, School of Dentistry, Kyungpook National University) ;
  • Jung, Jae-Kwang (Department of Oral medicine, School of Dentistry, Kyungpook National University) ;
  • Choi, Jae-Kap (Department of Oral medicine, School of Dentistry, Kyungpook National University)
  • 허윤경 (경북대학교 치의학전문대학원 구강내과학 교실) ;
  • 정재광 (경북대학교 치의학전문대학원 구강내과학 교실) ;
  • 최재갑 (경북대학교 치의학전문대학원 구강내과학 교실)
  • Received : 2010.12.05
  • Accepted : 2011.03.27
  • Published : 2011.06.30


We report 4 patients who developed change of occlusion which seemed to be related to anterior disc dislocation without reduction, but there was no distinct evidence of condylar destruction or collapse. They experienced sudden occurrence of occlusal change, anterior open bite in 2 patients, lateral CR-CO discrepancy in 1 patient, and anteroposterior CR-CO discrepancy in 1 patient. Also, this report is to find out if there is a relation between sudden occurrence of occlusal change and anterior disc dislocation without reduction.


Anterior disc dislocation without reduction;Occlusal change;Anterior open bite;CR-CO discrepancy


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