JOURNAL OF SHANDONG UNIVERSITY (HEALTH SCIENCES) ›› 2015, Vol. 53 ›› Issue (8): 61-65.doi: 10.6040/j.issn.1671-7554.0.2014.447

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Different condylar displacements between centric relation and maximum intercuspation before and after orthodontic intervention

HAN Xu1,2, SHAO Yuting2,3, SUN Qinfeng2, GUO Jing2   

  1. 1. Department of Orthodontics, Nanjing Maternity and Child Health Care Hospital, Nanjing 210000, Jiangsu, China;
    2. Department of Orthodontics, Dental School & Hospital of Shandong University, Jinan 250012, Shandong, China;
    3. Department of Orthodontics, Qilu Hospital of Shandong University, Qingdao 266000, Shandong, China
  • Received:2014-07-07 Published:2015-08-10

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Abstract: Objective To investigate the effects of orthodontic intervention on maximum intercuspation (MIC)- centric relation (CR) condylar displacement of patients with or without temporomandibular disorders (TMD). Methods A total of 31 orthodontic patients aged 16 to 45 years were selected and divided into the TMD group (n=15) and non-TMD group (n=16). Records of MIC and CR of these patients taken before and after orthodontic intervention were compared. Results The two groups had different MIC-CR displacement before and after treatment. There were more changes in the TMD group, and the changes were mostly favorable. The MIC-CR condylar displacement was correlated with the symptom checklist (SCL) score. Conclusion Orthodontic intervention has effect on condylar position of patients, especially for those with TMD. Orthodontists, therefore, need to understand and pay attention to the effect of malocclusion on TMD and limitations of measurement of condylar displacement (MCD) in the diagnosis.

Key words: Orthodontics, Maximum intercuspation, Centric relation, Measurement of condylar displacement, Temporomandibular disorders

CLC Number: 

  • R783.5
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