Accuracy of CBCT based computer assisted surgical guide for implant placement with tilted position in posterior atrophied mandible
Abdel Ghafar, E., Abdel Monim, G. (2020). Accuracy of CBCT based computer assisted surgical guide for implant placement with tilted position in posterior atrophied mandible. EKB Journal Management System, 11(3), 80-88. doi: 10.21608/omx.2021.61803.1109
Enas Abdel Ghafar; Ghada Abdel Monim. "Accuracy of CBCT based computer assisted surgical guide for implant placement with tilted position in posterior atrophied mandible". EKB Journal Management System, 11, 3, 2020, 80-88. doi: 10.21608/omx.2021.61803.1109
Abdel Ghafar, E., Abdel Monim, G. (2020). 'Accuracy of CBCT based computer assisted surgical guide for implant placement with tilted position in posterior atrophied mandible', EKB Journal Management System, 11(3), pp. 80-88. doi: 10.21608/omx.2021.61803.1109
Abdel Ghafar, E., Abdel Monim, G. Accuracy of CBCT based computer assisted surgical guide for implant placement with tilted position in posterior atrophied mandible. EKB Journal Management System, 2020; 11(3): 80-88. doi: 10.21608/omx.2021.61803.1109

Accuracy of CBCT based computer assisted surgical guide for implant placement with tilted position in posterior atrophied mandible

Egyptian Journal of Oral and Maxillofacial Surgery
Article 1, Volume 11, Issue 3, July 2020, Page 80-88  XML PDF (398.19 K)
Document Type: Original Article
DOI: 10.21608/omx.2021.61803.1109
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Authors
Enas Abdel Ghafar email 1; Ghada Abdel Monim2
1Department of Oral and Maxillofacial Radiology , Faculty of Dentistry, Cairo University, Cairo, Egypt
2Department of Oral and Maxillofacial, Faculty of Dentistry, Cairo University, Cairo, Egypt
Abstract
Purpose: Investigate the accuracy of CBCT based computer aided surgical guide CASG for implant placement in posterior
atrophied mandible with tilted position (buccal or lingual) to inferior alveolar nerve IAN avoiding its injury.
Materials and Methods: 15 partially edentulous patients with atrophied mandible were included based on certain eligibility
criteria, the work flow in this study run as following, CBCT imaging, virtual implant planning and CASG designing, 3D
stereolithographic printing of surgical guide, surgical procedures of implant placement using the CASG, post-operative CBCT
imaging, registration of pre- and post-operative CBCT images, assessment of angular deviation between actual and planned
implants and linear deviation between them cervically and apically, comparison between virtual and actual implants distance
to IAN.
Results: Wilcoxon signed-rank test Comparing between virtual and actual implants’ distance to IAN showed a statistically
significant difference with a mean distance of 0.72 ± 0.25 mm for actual implants and 1.7 ± 0.56 mm for virtual
implants. (4.13 ± 1.86°) was the mean angular deviation, while 1.15 ± 0.49 mm and 1.32 ± 0.63 were the mean cervical and
apical linear deviation respectively.
Conclusion: although a significant difference was found between virtual and actual implants distance to IAN, the values
of linear and angular deviation between them were well accepted and within the range reported by most of similar clinical
studies with less crucial situations, which enhance using fully guided stereolithographic CASG for implant placement with
tilted position in posterior atrophied mandible but with considering at least 2 mm distance between virtual implant and IAN in
planning procedures.
Keywords
Atrophied Mandible; By-pass- Computer aided surgical guide; CBCT; Dental Implants; Inferior Alveolar Nerve
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