A STUDY OF CONDYLAR POSITION IN CENTRIC RELATION AND MAXIMAL INTERCUSPATION USING CONEBEAM TOMOGRAPHY

2019 ◽  
pp. 84-92
Author(s):  
Anh Chi Phan ◽  
Xuan Anh Ngoc Ho
Keyword(s):  
Dental Students ◽  
Cone Beam ◽  
Test Results ◽  
Reference Position ◽  
Centric Relation ◽  
Temporomandibular Joints ◽  
Significant Difference ◽  
Mandibular Fossa ◽  
Condylar Position ◽  
Cone Beam Tomography

Background: The condylar position discrepancy between centric relation and maximal intercuspation has been still a controversial issue. Aims: To compare the condylar position between centric relation and maximal intercuspation using cone-beam tomography in patients without temporomandibular joints disorder. Materials and methods: To assess the condylar position in centric relation and maximal intercuspation using cone-beam tomography on 40 fifth-year and sixth-year dental students of Hue University of Medicine and Pharmacy without temporomandibular joints disorder. The condylar positions are assessed following Sener classification (2009) and are compared between centric relation and maximal intercuspation using pairedsamples t-test and Mann-Whitney U-test. Results: Among 480 condye-to-fossa measurement pairs, there are 91.2% pairs having difference between two reference position but there is no significant difference. The condylar position at the superior of mandibular fossa has the greatest percentage in both centric relation and maximal intercuspation (43.8% in centric relation and 51.2% in maximal intercuspation). This greatest percentage is followed by the condylar position at posterior of mandibular fossa (32.5% in centric relation and 36.3% in maximal intercuspation). Lastly, the condylar position at the anterior of mandibular fossa has the fewest percentage (23.7% in centric relation and 12.5% in maximal intercuspation). Conclusion: There is no significant difference of condylar position between centric relation and maximal intercuspation in patients without temporomandibular joints disorder. Key words: Condylar position, centric relation, maximal intercuspation, cone-beam tomography

Full Facial Allotransplantation Including the Temporomandibular Joints: A Radiologic and Anatomical Cadaveric Study

2020 ◽  
Vol 146 (3) ◽  
pp. 622-632 ◽  
Author(s):  
Teresa Nunez-Villaveiran ◽  
Vahe Fahradyan ◽  
Edoardo Dalla Pozza ◽  
Majid Rezaei ◽  
Richard L. Drake ◽  
...  
Keyword(s):  
Cadaveric Study ◽  
Temporomandibular Joints

Long term effect of bilateral anterior elevation of occlusion on the temporomandibular joints

Oral Diseases ◽  
2021 ◽  
Author(s):  
Yuejiao Zhang ◽  
Qian Liu ◽  
Xiaojie Xu ◽  
Peng Zhou ◽  
Hongyun Zhang ◽  
...  
Keyword(s):  
Term Effect ◽  
Temporomandibular Joints ◽  
Long Term Effect

Impact of mandibular prognathism on morphology and loadings in temporomandibular joints

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Jingheng Shu ◽  
Quanyi Wang ◽  
Desmond Y.R. Chong ◽  
Zhan Liu
Keyword(s):  
Finite Element Analysis ◽  
Pearson Correlation ◽  
Morphological Parameters ◽  
Element Analysis ◽  
Mandibular Prognathism ◽  
Temporomandibular Joints ◽  
Pearson Correlation Analysis ◽  
Von Mises ◽  
Von Mises Stresses ◽  
Asymptomatic Subjects

AbstractLoadings in temporomandibular joints (TMJs) are essential factors in dysfunction of TMJs, and are barely noticed in treatment of maxillofacial deformity. The only approach, which can access stresses in TMJs, could expend day’s even weeks to complete. The objective of the study was to compare the differences of the morphological and biomechanical characteristics of TMJs between asymptomatic subjects and patients with mandibular prognathism, and to preliminarily analyze the connection between the two kinds of characteristics. Morphological measurements and finite element analysis (FEA) corresponding to the central occlusion were carried out on the models of 13 mandibular prognathism patients and 10 asymptomatic subjects. The results indicated that the joint spaces of the patients were significantly lower than those of the asymptomatic subjects, while the stresses of patients were significantly greater than those of asymptomatic subjects, especially the stresses on discs. The results of Pearson correlation analysis showed that weak or no correlations were found between the von Mises stresses and the joint spaces of asymptomatic subjects, while moderate, even high correlations were found in the patients. Thus, it was shown to be a feasible way to use morphological parameters to predict the internal loads of TMJs.

Quantifying Synovial Enhancement of Temporomandibular Joints From Mris of Patients with Juvenile Idiopathic Arthritis

2016 ◽  
Vol 74 (9) ◽  
pp. e18 ◽  
Author(s):  
C.M. Resnick ◽  
P. Vakilian ◽  
D. Zurakowski ◽  
M. Breen ◽  
L.B. Kaban ◽  
...  
Keyword(s):  
Juvenile Idiopathic Arthritis ◽  
Temporomandibular Joints

Imaging of the Postoperative Jaws and Temporomandibular Joints

2022 ◽  
Vol 32 (1) ◽  
pp. 203-229
Author(s):  
Dania Tamimi ◽  
Michael Gunson
Keyword(s):  
Temporomandibular Joints
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