Malmö University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Web-based educational programme for temporomandibular joint assessment with cone-beam computed tomography.
Malmö University, Faculty of Odontology (OD).
Malmö University, Faculty of Odontology (OD).ORCID iD: 0000-0002-8539-7742
Malmö University, Faculty of Odontology (OD).ORCID iD: 0000-0001-5635-1887
Malmö University, Faculty of Odontology (OD).
Show others and affiliations
2020 (English)In: Journal of Oral Rehabilitation, E-ISSN 1365-2842, Vol. 47, no 11, p. 1330-1336Article in journal (Refereed) Published
Abstract [en]

OBJECTIVES: To develop and evaluate an educational web-based program for temporomandibular joint (TMJ) assessment using cone-beam computed tomography (CBCT).

METHODS: A web-based educational program was designed for TMJ assessment using CBCT images. Fifteen CBCT cases of the TMJ (three-dimensional reconstructed volumes) and an assessment module based on image analysis criteria in the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) were added to the program. Thirty-six undergraduate dental students were invited to test the program by assessing all cases twice: before and after 2 months of training. Participants submitted written subjective evaluations of the program.

RESULTS: The web-based program can be accessed on Malmö University webpage (www.cbct-tmj.mau.se). Despite limited CBCT learning in their undergraduate training and not using the program in the 2-month interval, the students were able to correctly diagnose 80% of the cases at the second assessment. Their diagnoses, however, did not differ significantly from the first assessment. Overall, the students were satisfied with the program and considered it user friendly.

CONCLUSION: The web-based educational program that was developed in the present study and tested by dental students could be a useful educational tool for TMJ assessment using CBCT.

Place, publisher, year, edition, pages
John Wiley & Sons, 2020. Vol. 47, no 11, p. 1330-1336
Keywords [en]
Cone-beam CT, education, temporomandibular joint, training program
National Category
Dentistry
Identifiers
URN: urn:nbn:se:mau:diva-18008DOI: 10.1111/joor.13065ISI: 000564227900001PubMedID: 32757414Scopus ID: 2-s2.0-85090005283OAI: oai:DiVA.org:mau-18008DiVA, id: diva2:1458640
Available from: 2020-08-17 Created: 2020-08-17 Last updated: 2024-02-26Bibliographically approved
In thesis
1. Temporomandibular joint imaging using cone-beam computed tomography
Open this publication in new window or tab >>Temporomandibular joint imaging using cone-beam computed tomography
2020 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Cone-beam computed tomography (CBCT) is one of the most revolutionary innovations in dentistry, and was introduced into the dental field two decades ago as a three-dimensional (3D) imaging modality. Since then, it has gained general clinical acceptance, and is widespread among many dental specialties. The CBCT examination is a fast and user-friendly technique that provides multiplanar images with high spatial resolution, providing information that is unattainable with two-dimensional (2D) imaging in many diagnostic tasks. Thus, CBCT is an essential examination tool that can replace or complement other examinations. CBCT imaging plays a valuable role when hard tissue abnormalities are suspected in the temporomandibular joint (TMJ) by providing diagnostic information on cortical and subcortical boneintegrity or destruction/production changes.

The growing availability and use of CBCT at dental clinics has led to concerns as to whether the information obtained by CBCT imaging justifies the additional exposure of the patient to radiation and the training required to examine and interpret the images. The radiation protection principles: justification and optimisation, should always be applied as the basis for protection. This thesis presents four studies on TMJ imaging using CBCT. In line with recent trends towards digital online education, two CBCT educational tools were developed for the interpretation of CBCT images of the TMJ and published on the Malmö University web site. The first was an educational tool including 35 CBCT examinations of TMJ, presented as 2D multiplane CBCT images. The second was a web-based programme containing 15 CBCT examinations of TMJ, presented as 3D multiplane CBCT images. Both tools included the image analysis criteria of the Diagnostic Criteria for Temporomandibular disorder (DC/TMD) as an assessment module, and were tested by dental students. It was found that they could be useful educational tools for TMJ assessment using CBCT images.

The aim of the third study was to map and compare the distribution of absorbed doses using radiochromic film dosimeters in panoramic radiography and CBCT examinations of the TMJ using adult and child anthropomorphic head phantoms. Sheets of Gafchromic film (XR-QA2)were placed at five levels, corresponding to the radiographic examination, in the phantoms. The clinical protocols for panoramic and CBCT imaging of the TMJ of three dental X-ray units were used. The mean absorbed doses to a number of radiosensitive tissues within the oral and maxillofacial regions were estimated. The absorbed doses varied considerably among and within the radiosensitive tissues with examination type, X-ray unit, clinical setting, and patient age. The bonesurface and salivary glands received the highest absorbed doses in both radiographic examinations. The radiation burden was lower when using two small right and left fields of view (FOVs) than when using a single larger FOV. Accurate measurements of the absorbed dose in small dental radiation fields is challenging due to steep dose gradients. The use of Gafchromic film has shown promising results, allowing dose comparisons between different radiographic imaging.

The last study was carried out to investigate the possibility of dose optimisation in CBCT examinations of the TMJ, in line with there commendations of the International Commission on Radiological Protection (ICRP) and the National Council on Radiation Protection and Measurements (NCRP). Thirty-four adult patients referred for CBCT imaging of the TMJ underwent two examinations with different scanning protocols, a manufacturer-recommended protocol (default), and a low-dose protocol in which the tube current was reduced to 20% of that in the default protocol. Three image stacks were reconstructed: the default protocol, the low-dose protocol, and the low-dose protocol processed using a noise reduction algorithm. Four radiologists evaluated the visibility of TMJ anatomic structures, image quality and radiographic findings. It was found that the visibility of the TMJ anatomical structures, the overall image quality and the radiographic findings using the low-dose protocol were comparable to those in the default protocol, indicating that diagnostically comparable results could be obtained with a five times lower radiation dose.

Finally, this thesis highlights the diagnostics of TMJ imaging using CBCT in the context of image interpretation, imaging dosimetry and dose optimisation, all with the purpose of improving and optimising radiological TMJ diagnostics.

Place, publisher, year, edition, pages
Malmö: Malmö universitet, 2020. p. 75
Series
Doctoral Dissertation in Odontology
National Category
Dentistry
Identifiers
urn:nbn:se:mau:diva-36685 (URN)10.24834/isbn.9789178771073 (DOI)9789178771066 (ISBN)9789178771073 (ISBN)
Public defence
2020-12-11, Orkanen, hörsal D131 samt digitalt, Nordenskiöldsg. 10, Malmö, 11:28 (English)
Opponent
Available from: 2020-11-09 Created: 2020-11-09 Last updated: 2022-06-27Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMedScopus

Authority records

Iskanderani, DurerAlstergren, PerEkberg, Ewa CarinShi, Xie-QiHellén-Halme, Kristina

Search in DiVA

By author/editor
Iskanderani, DurerAlstergren, PerEkberg, Ewa CarinShi, Xie-QiHellén-Halme, Kristina
By organisation
Faculty of Odontology (OD)
In the same journal
Journal of Oral Rehabilitation
Dentistry

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 301 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf