Accuracy of voxel based superimposition in evaluation of orthodontic cases
Samir, S., Hamed, W., Abaas, N., Farid, M. (2017). Accuracy of voxel based superimposition in evaluation of orthodontic cases. EKB Journal Management System, 63(Issue 3 - July (Oral Medicine, X-Ray, Oral Biology & Oral Pathology)), 2369-2375. doi: 10.21608/edj.2017.76054
Sahar Mohamed Samir; Walaa Mohamed Hamed; Noha Hussein Abaas; Mary Medhat Farid. "Accuracy of voxel based superimposition in evaluation of orthodontic cases". EKB Journal Management System, 63, Issue 3 - July (Oral Medicine, X-Ray, Oral Biology & Oral Pathology), 2017, 2369-2375. doi: 10.21608/edj.2017.76054
Samir, S., Hamed, W., Abaas, N., Farid, M. (2017). 'Accuracy of voxel based superimposition in evaluation of orthodontic cases', EKB Journal Management System, 63(Issue 3 - July (Oral Medicine, X-Ray, Oral Biology & Oral Pathology)), pp. 2369-2375. doi: 10.21608/edj.2017.76054
Samir, S., Hamed, W., Abaas, N., Farid, M. Accuracy of voxel based superimposition in evaluation of orthodontic cases. EKB Journal Management System, 2017; 63(Issue 3 - July (Oral Medicine, X-Ray, Oral Biology & Oral Pathology)): 2369-2375. doi: 10.21608/edj.2017.76054

Accuracy of voxel based superimposition in evaluation of orthodontic cases

Egyptian Dental Journal
Article 10, Volume 63, Issue 3 - July (Oral Medicine, X-Ray, Oral Biology & Oral Pathology), July 2017, Page 2369-2375  XML PDF (954.52 K)
Document Type: Original Article
DOI: 10.21608/edj.2017.76054
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Authors
Sahar Mohamed Samir1; Walaa Mohamed Hamed2; Noha Hussein Abaas3; Mary Medhat Farid2
1Ass. Lecturer of Oral and Maxillofacial Radiology Faculty of Dentistry Ain Shams University
2Ass. Professor of Oral and Maxillofacial Radiology Faculty of Dentistry Ain Shams University
3Lecturer of Orthodontics Faculty of Dentistry Ain Shams University
Abstract
Aim: To compare the accuracy of 3D superimposed models produced by two programs using voxel based superimposition in follow up of orthodontic cases.
Patients and methods: The study included 21 non-growing patients performing orthodontic treatment. The gold standard was obtained by tracing each CBCT scan then recording linear measurements between evaluation points. T1 pre-treatment and T2 post-treatment scans were fused forming 3D superimposed model using two software programs; In Vivo (Anatomage, San Jose, California, USA), and Ondemand 3D (Ondemand 3D; Cybermed Co., Seoul, Korea). Accuracy as well as inter-observer reliability between three trained observers were calculated.
Results: Cronbach’s alpha test showed significant low accuracy of superimposed models performed by In Vivo on canine and premolar readings and those obtained by Ondemand 3D showed significant low accuracy in canine readings. Cronbach’s alpha test showed significant moderate inter-observer reliability in canine readings and significant low inter-observer reliability in molar readings performed by InVivo. While inter-observer reliability of on demand 3D was significantly moderate in molar and canine readings.
Conclusion: Statistical results showed low accuracy of 3D superimposed models performed by InVivo and Ondemand. In OnDemand showed higher inter observe reliability than InVivo.
Keywords
cone beam CT; Orthodontics; Computer guided 3D imaging
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