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Cone beam computed tomography for identification of periimplant bone defects simulated in fresh bovine ribs

Grant number: 11/20179-0
Support Opportunities:Regular Research Grants
Duration: April 01, 2012 - September 30, 2014
Field of knowledge:Health Sciences - Dentistry - Dental Radiology
Principal Investigator:Marcelo de Gusmão Paraíso Cavalcanti
Grantee:Marcelo de Gusmão Paraíso Cavalcanti
Host Institution: Faculdade de Odontologia (FO). Universidade de São Paulo (USP). São Paulo , SP, Brazil


For implant planning, CT offers several advantages over conventional radiography. However, it is still not widely used but in the post-operative assessment.The evaluation of peri-implant bone defects still raises many questions, especially related to interference from metallic artifacts caused by dental implants.The objectives of this study are to test the accuracy of cone beam computed tomography (CBCT) in the diagnosis of peri-implant bone defects, to compare different imaging protocols on two different cone-beam CT scanners to assess the interference caused by metallic artifacts visualization of dental implants in peri-implant bone integrity and influence of the variance of voxel thickness and FOV (field of view), specifically with i-CAT cone beam CT scanner.30 blocks fresh beef ribs will be used, in which 120 sites for implants will be made. Peri-implant bone defects will be simulated with perchloric acid in half of the sample and then the implants will be installed.The acquisitions will be held in two CBCT devices: a) Next Generation i-CAT and b) PreXion 3D in different acquisition protocols. Three observers will evaluate the tests twice, in random order in two independent workstations containing the software OsiriX MD, Xoran and PreXion 3D Viewer. Sensitivity, specificity and reproducibility of CBCT will be evaluated in all protocols. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PINHEIRO, LUCAS RODRIGUES; SCARFE, WILLIAM C.; DE OLIVEIRA SALES, MARCELO AUGUSTO; GAIA, BRUNO FELIPE; GONZALEZ CORTES, ARTHUR RODRIGUEZ; PARAISO CAVALCANTI, MARCELO GUSMAO. Effectiveness of Periapical Radiography Versus Cone Beam Computed Tomography with Different Kilovoltage Settings in the Detection of Chemically Created Peri-implant Bone Defects: An In Vitro Study. INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS, v. 32, n. 4, p. 741-750, . (11/20179-0, 11/20304-9)
PINHEIRO, LUCAS RODRIGUES; SCARFE, WILLIAM C.; DE OLIVEIRA SALES, MARCELO AUGUSTO; GAIA, BRUNO FELIPE; GONZALEZ CORTES, ARTHUR RODRIGUEZ; CAVALCANTI, MARCELO GUSMAO. Effect of Cone-Beam Computed Tomography Field of View and Acquisition Frame on the Detection of Chemically Simulated Peri-Implant Bone Loss In Vitro. Journal of Periodontology, v. 86, n. 10, p. 1159-1165, . (11/20179-0, 11/20304-9)
PINHEIRO, LUCAS RODRIGUES; GAIA, BRUNO FELIPE; OLIVEIRA DE SALES, MARCELO AUGUSTO; UMETSUBO, OTAVIO SHOITI; SANTOS, JR., OSEAS; PARAISO CAVALCANTI, MARCELO GUSMAO. Effect of field of view in the detection of chemically created peri-implant bone defects in bovine ribs using cone beam computed tomography: an in vitro study. ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY, v. 120, n. 1, p. 69-77, . (11/20179-0, 11/20304-9)

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