Degenerative arthritis is an age-related disease. The progression and severity of osseous changes in the condylar head and mandibular fossa are increased with age. In older age groups, patients are expected to have more frequent and severe progressive degenerative bony changes due to the development of TMJ osteoarthritis than patients in younger age groups.

Regions in the vicinity of the metal rods were moderately or gravely affected, particularly in the area between the rods. In practice, the CBCT user has very limited possibilities to reduce artifacts. Researchers and manufacturers need to combine their efforts in optimizing exposure factors and implementing metal artifact reduction algorithms.

Cone beam CT (CBCT) is a new technique for maxillofacial imaging. We describe a reconstruction technique for radiographic examination of the temporomandibular joint (TMJ) using CBCT, and we further present four cases where the technique was employed. The technique provides a complete radiographic investigation of the bony components of the TMJ. The reconstructed images are of high diagnostic quality. The examination time is shorter and the patient dose is lower than that with conventional CT. It may therefore be considered as the imaging technique of choice when investigation of bony changes of the TMJ is the task at hand.

Aims:  The purpose of this study was to develop and implement a blended course (a combined face‐to‐face and online instruction) on undergraduate oral radiology and evaluate it by comparing its educational effectiveness (derived from students’ performance and answers to questionnaires) to a conventional course’s. Students’ attitudes concerning the blended methodology were also registered. Methodology:  An original course was developed and implemented, and its electronic version was uploaded to an e‐learning educational platform. The course was attended by two groups of final‐year students, who were taught by either the conventional face‐to‐face methodology or the blended learning methodology. Students answered a series of questionnaires, before and after following the course, regarding their perceptions, attitudes and evaluation of the course. Additionally, they completed knowledge assessment tests and their grades (before and after the course) were compared. Educational effectiveness of the course was determined by analysing the results of the questionnaires and the tests. Results:  Students in the blended group performed significantly better than their colleagues of the conventional group in the post‐course knowledge test, and female students of the blended group performed better than male students. Students evaluated high the course content, organisation, educational material, and the blended group students additionally appreciated the course design and clarity of instructions. Students’ attitudes towards elements of blended learning (effectiveness, motivation and active engagement) were very positive. Most of the blended group students, who attended the face‐to‐face meeting (approx. 91%), evaluated it as helpful for summarising the subject and clarifying difficult issues. Conclusions:  Blended learning is effective and well evaluated by dental students and can be implemented in undergraduate curriculum for teaching oral radiology.

This is the published version of a paper published in Dento-Maxillo-Facial Radiology.Citation for the original published paper (version of record):Horner, K., Islam, M., Flygare, L., Tsiklakis, K., Whaites, E. (2009) Basic principles for use of dental cone beam computed tomography: consensus guidelines of the European Academy of Dental and Maxillofacial Radiology.. Dento