<abstract xmlns="http://www.w3.org/1999/xhtml"> Background: Mandibular movements are reliable indicators of mandibular system disease and changes in movements can be useful to estimate treatment effect. Detection of mandibular movement is important. Objectives: We evaluated four-dimensional (4D) visualization of mandibular and temporomandibular joint movement using 320-row computed tomography (CT). Methods: A stepwise mouth gag was placed between mandibular and maxillary incisors to control mouth opening (0.5-cm increments) in healthy volunteers and one temporomandibular disorder (TMD) patient. A 320-row CT Joint-Move and Shot sequence was used for scanning with an image taken after each increment. 4D reconstruction was used to establish volume data. Results: 4D visualization of joint and dentition in a rest state and in a state of mandibular movement from multiple angles and in different planes demonstrated differences between healthy subjects and the subject with TMD. The effective dose per scan was approximately 17% of the 16-slice spiral CT. Conclusion: 4D visualization of mandibular movement can be achieved through 320-row volume CT, which may provide a diagnosis of temporomandibular joint disorder and assessment of treatment effects.</abstract>

Background: Mandibular movements are reliable indicators of mandibular system disease and changes in movements can be useful to estimate treatment effect. Detection of mandibular movement is important. Objectives: We evaluated four-dimensional (4D) visualization of mandibular and temporomandibular joint movement using 320-row computed tomography (CT). Methods: A stepwise mouth gag was placed between mandibular and maxillary incisors to control mouth opening (0.5-cm increments) in healthy volunteers and one temporomandibular disorder (TMD) patient. A 320-row CT Joint-Move and Shot sequence was used for scanning with an image taken after each increment. 4D reconstruction was used to establish volume data. Results: 4D visualization of joint and dentition in a rest state and in a state of mandibular movement from multiple angles and in different planes demonstrated differences between healthy subjects and the subject with TMD. The effective dose per scan was approximately 17% of the 16-slice spiral CT. Conclusion: 4D visualization of mandibular movement can be achieved through 320-row volume CT, which may provide a diagnosis of temporomandibular joint disorder and assessment of treatment effects.

A pilot study of four-dimensional visualization of mandibular and temporomandibular joint movement

Oral and Maxillofacial Surgery, China PLA General Hospital (current institution: Department of Stomatology, General Hospital of Jinan Military Region), Haidian, Beijing 100853,

Oral and Maxillofacial Surgery, China PLA General Hospital (current institution: Department of Stomatology, General Hospital of Jinan Military Region), Haidian, Beijing 100853

Department of Oral and Maxillofacial Surgery, The 174th hospital of Chinese PLA, Xiamen, Fujian 361003,

Department of Stomatology, Beijing Military General Hospital, Chaoyang, Beijing 100700,

Department of Medical Imaging, Jinan Military General Hospital, Shandong 250031,

Asian Biomedicine

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Background: Mandibular movements are reliable indicators of mandibular system disease and changes in movements can be useful to estimate treatment effect....

A pilot study of four-dimensional visualization of mandibular and temporomandibular joint movement

Article Category: Brief communication (Original)

Published Online: Feb 04, 2017

Page range: 591 - 596

DOI: https://doi.org/10.5372/1905-7415.0604.095

Keywords
Four-dimensional visualization, mandible, temporomandibular joint, 320 CT

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

A pilot study of four-dimensional visualization of mandibular and temporomandibular joint movement

Article Category: Brief communication (Original)

Published Online: Feb 04, 2017

Page range: 591 - 596

DOI: https://doi.org/10.5372/1905-7415.0604.095

KeywordsFour-dimensional visualization, mandible, temporomandibular joint, 320 CT

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Four-dimensional visualization, mandible, temporomandibular joint, 320 CT