Radiographic features of cleidocranial dysplasia on panoramic radiographs

Khanthaly Symkhampha; Geum Sun Ahn; Kyung-Hoe Huh; Min-Suk Heo; Sam-Sun Lee; Jo-Eun Kim

doi:10.5624/isd.20201007

Radiographic features of cleidocranial dysplasia on panoramic radiographs

Imaging Sci Dent. 2021 Sep;51(3):271-278. doi: 10.5624/isd.20201007. Epub 2021 Aug 11.

Authors

Khanthaly Symkhampha^{1

2}, Geum Sun Ahn³, Kyung-Hoe Huh², Min-Suk Heo², Sam-Sun Lee², Jo-Eun Kim⁴

Affiliations

¹ Division of Oral and Maxillofacial Radiology, Department of Basic Science, Faculty of Dentistry, University of Health Sciences, Vientiane, Laos.
² Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea.
³ Department of Dental Hygiene, Kyungbok University, Pocheon, Korea.
⁴ Department of Oral and Maxillofacial Radiology, Seoul National University Dental Hospital, Seoul, Korea.

Abstract

Purpose: This study aimed to investigate the panoramic imaging features of cleidocranial dysplasia (CCD) with a relatively large sample.

Materials and methods: The panoramic radiographs of 40 CCD patients who visited Seoul National University Dental Hospital between 2004 and 2018 were analyzed. Imaging features were recorded based on the consensus of 2 radiologists according to the following criteria: the number of supernumerary teeth and impacted teeth; the shape of the ascending ramus, condyle, coronoid process, sigmoid notch, antegonial notch, and hard palate; the mandibular midline suture; and the gonial angle.

Results: The mean number of supernumerary teeth and impacted teeth were 6.1 and 8.3, respectively, and the supernumerary teeth and impacted teeth were concentrated in the anterior and premolar regions. Ramus parallelism was dominant (32 patients, 80.0%) and 5 patients (12.5%) showed a mandibular midline suture. The majority of mandibular condyles showed a rounded shape (61.2%), and most coronoid processes were triangular (43.8%) or round (37.5%). The mean gonial angle measured on panoramic radiographs was 122.6°.

Conclusion: Panoramic radiographs were valuable for identifying the features of CCD and confirming the diagnosis. The presence of numerous supernumerary teeth and impacted teeth, especially in the anterior and premolar regions, and the characteristic shapes of the ramus, condyle, and coronoid process on panoramic radiographs may help to diagnose CCD.

Keywords: Cleidocranial Dysplasia; Mandible; Maxilla; Panoramic Radiography; Tooth.