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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Panoramic radiographs underestimate extensions of the anterior loop and mandibular incisive canal

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Author(s):
Ramos de Brito, Ana Caroline [1] ; Nejaim, Yuri [1] ; de Freitas, Deborah Queiroz [1] ; Santos, Christiano de Oliveira [2]
Total Authors: 4
Affiliation:
[1] Univ Estadual Campinas, Dept Oral Diag, Div Oral Radiol, Piracicaba Dent Sch, Ave Limeira 901, BR-13414903 Sao Paulo - Brazil
[2] Univ Sao Paulo, Sch Dent Ribeirao Preto, Dept Stomatol Publ Oral Hlth & Forens Dent, Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: IMAGING SCIENCE IN DENTISTRY; v. 46, n. 3, p. 159-165, SEP 2016.
Web of Science Citations: 10
Abstract

Purpose: The purpose of this study was to detect the anterior loop of the mental nerve and the mandibular incisive canal in panoramic radiographs (PAN) and cone-beam computed tomography (CBCT) images, as well as to determine the anterior/mesial extension of these structures in panoramic and cross-sectional reconstructions using PAN and CBCT images. Materials and Methods: Images (both PAN and CBCT) from 90 patients were evaluated by 2 independent observers. Detection of the anterior loop and the incisive canal were compared between PAN and CBCT. The anterior/mesial extension of these structures was compared between PAN and both cross-sectional and panoramic CBCT reconstructions. Results: In CBCT, the anterior loop and the incisive canal were observed in 7.7% and 24.4% of the hemimandibles, respectively. In PAN, the anterior loop and the incisive canal were detected in 15% and 5.5% of cases, respectively. PAN presented more difficulties in the visualization of structures. The anterior/mesial extensions ranged from 0.0 mm to 19.0 mm on CBCT. PAN underestimated the measurements by approximately 2.0 mm. Conclusion: CBCT appears to be a more reliable imaging modality than PAN for preoperative workups of the anterior mandible. Individual variations in the anterior/mesial extensions of the anterior loop of the mental nerve and the mandibular incisive canal mean that is not prudent to rely on a general safe zone for implant placement or bone surgery in the interforaminal region. (AU)

FAPESP's process: 12/19331-4 - Panoramic radiography and cone beam computed tomography for planning of pre-mental foramen Implants
Grantee:Ana Caroline Ramos de Brito
Support Opportunities: Scholarships in Brazil - Master