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01-09-2019 | Original Article

Comparison of temporomandibular joint shape and size in patients with facial asymmetry

Authors: Seulgi Han, Sang Min Shin, Yong-Seok Choi, Ki Beom Kim, Tetsutaro Yamaguchi, Koutaro Maki, Chooryung J. Chung, Yong-Il Kim

Published in: Oral Radiology | Issue 3/2019

Abstract

Objective

To examine the morphologic similarities and differences in mandibular condyle and glenoid fossa between the deviated and non-deviated sides in patients with facial asymmetry using statistical analysis.

Methods

One hundred eighty-four patients (95 men, 89 women; mean age, 22.30 ± 3.87 years) with facial asymmetry were examined with cone-beam computed tomography (CBCT). Shape analysis was performed to compare the shapes and sizes of the condyle and fossa between the deviated and non-deviated sides in the frontal and lateral aspects. Ordinary Procrustes analysis (OPA) was used to determine shape variations of the fossa and condyle.

Results

Shape variations derived from ordinary sum of squares (OSS) suggested that, in the frontal aspect, there was a difference between the two sides in both the fossa and condyle (P < 0.05). In the lateral aspect, there was no difference in fossa shape between the two sides (P > 0.05); however, the shape of condyle was different between the non-deviated and deviated sides (P < 0.05). Size comparison in OPA matching and centroid size (CS) in the frontal aspect demonstrated that the non-deviated side was larger than the deviated side. In the lateral aspect, fossa showed no difference in CS between the two sides (P > 0.05); however, the non-deviated side was larger than the deviated side for condyle (P < 0.05).

Conclusions

Morphometric differences in condyle and fossa between the deviated and non-deviated sides were observed. Structures of the non-deviated side were relatively larger than those of the deviated side, except for fossa in the lateral aspect.

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Title: Comparison of temporomandibular joint shape and size in patients with facial asymmetry
Authors: Seulgi Han
Sang Min Shin
Yong-Seok Choi
Ki Beom Kim
Tetsutaro Yamaguchi
Koutaro Maki
Chooryung J. Chung
Yong-Il Kim
Publication date: 01-09-2019
Publisher: Springer Singapore
Published in: Oral Radiology / Issue 3/2019
Print ISSN: 0911-6028
Electronic ISSN: 1613-9674
DOI: https://doi.org/10.1007/s11282-018-0344-x

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Comparison of temporomandibular joint shape and size in patients with facial asymmetry

Abstract

Objective

Methods

Results

Conclusions

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Objective

Methods

Results

Conclusions

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