Evaluation of condyle defects using different reconstruction protocols of cone-beam computed tomography
This study was conducted to investigate how well cone-beam computed tomography (CBCT) can detect simulated cavitary defects in condyles, and to test the influence of the reconstruction protocols. Defects were created with spherical diamond burs (numbers 1013, 1016, 3017) in superior and/or posterior...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Pesquisa Odontológica
2013-12-01
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| Series: | Brazilian Oral Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242013000600503&lng=en&tlng=en |
| _version_ | 1828412958839930880 |
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| author | Luana Costa Bastos Paulo Sergio Flores Campos Flavia Maria de Moraes Ramos-Perez Andrea dos Anjos Pontual Solange Maria Almeida |
| author_facet | Luana Costa Bastos Paulo Sergio Flores Campos Flavia Maria de Moraes Ramos-Perez Andrea dos Anjos Pontual Solange Maria Almeida |
| author_sort | Luana Costa Bastos |
| collection | DOAJ |
| description | This study was conducted to investigate how well cone-beam computed tomography (CBCT) can detect simulated cavitary defects in condyles, and to test the influence of the reconstruction protocols. Defects were created with spherical diamond burs (numbers 1013, 1016, 3017) in superior and/or posterior surfaces of twenty condyles. The condyles were scanned, and cross-sectional reconstructions were performed with nine different protocols, based on slice thickness (0.2, 0.6, 1.0 mm) and on the filters (original image, Sharpen Mild, S9) used. Two observers evaluated the defects, determining their presence and location. Statistical analysis was carried out using simple Kappa coefficient and McNemar's test to check inter- and intra-rater reliability. The chi-square test was used to compare the rater accuracy. Analysis of variance (Tukey's test) assessed the effect of the protocols used. Kappa values for inter- and intra-rater reliability demonstrate almost perfect agreement. The proportion of correct answers was significantly higher than that of errors for cavitary defects on both condyle surfaces (p < 0.01). Only in identifying the defects located on the posterior surface was it possible to observe the influence of the 1.0 mm protocol thickness and no filter, which showed a significantly lower value. Based on the results of the current study, the technique used was valid for identifying the existence of cavities in the condyle surface. However, the protocol of a 1.0 mm-thick slice and no filter proved to be the worst method for identifying the defects on the posterior surface. |
| first_indexed | 2024-12-10T12:58:44Z |
| format | Article |
| id | doaj.art-cef92e85a43c43008c88a8906c7921aa |
| institution | Directory Open Access Journal |
| issn | 1807-3107 |
| language | English |
| last_indexed | 2024-12-10T12:58:44Z |
| publishDate | 2013-12-01 |
| publisher | Sociedade Brasileira de Pesquisa Odontológica |
| record_format | Article |
| series | Brazilian Oral Research |
| spelling | doaj.art-cef92e85a43c43008c88a8906c7921aa2022-12-22T01:48:01ZengSociedade Brasileira de Pesquisa OdontológicaBrazilian Oral Research1807-31072013-12-0127650350910.1590/S1806-83242013000600010S1806-83242013000600503Evaluation of condyle defects using different reconstruction protocols of cone-beam computed tomographyLuana Costa BastosPaulo Sergio Flores CamposFlavia Maria de Moraes Ramos-PerezAndrea dos Anjos PontualSolange Maria AlmeidaThis study was conducted to investigate how well cone-beam computed tomography (CBCT) can detect simulated cavitary defects in condyles, and to test the influence of the reconstruction protocols. Defects were created with spherical diamond burs (numbers 1013, 1016, 3017) in superior and/or posterior surfaces of twenty condyles. The condyles were scanned, and cross-sectional reconstructions were performed with nine different protocols, based on slice thickness (0.2, 0.6, 1.0 mm) and on the filters (original image, Sharpen Mild, S9) used. Two observers evaluated the defects, determining their presence and location. Statistical analysis was carried out using simple Kappa coefficient and McNemar's test to check inter- and intra-rater reliability. The chi-square test was used to compare the rater accuracy. Analysis of variance (Tukey's test) assessed the effect of the protocols used. Kappa values for inter- and intra-rater reliability demonstrate almost perfect agreement. The proportion of correct answers was significantly higher than that of errors for cavitary defects on both condyle surfaces (p < 0.01). Only in identifying the defects located on the posterior surface was it possible to observe the influence of the 1.0 mm protocol thickness and no filter, which showed a significantly lower value. Based on the results of the current study, the technique used was valid for identifying the existence of cavities in the condyle surface. However, the protocol of a 1.0 mm-thick slice and no filter proved to be the worst method for identifying the defects on the posterior surface.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242013000600503&lng=en&tlng=enMandibular CondyleBone DiseasesCone-Beam Computed TomographyImage Enhancement |
| spellingShingle | Luana Costa Bastos Paulo Sergio Flores Campos Flavia Maria de Moraes Ramos-Perez Andrea dos Anjos Pontual Solange Maria Almeida Evaluation of condyle defects using different reconstruction protocols of cone-beam computed tomography Brazilian Oral Research Mandibular Condyle Bone Diseases Cone-Beam Computed Tomography Image Enhancement |
| title | Evaluation of condyle defects using different reconstruction protocols of cone-beam computed tomography |
| title_full | Evaluation of condyle defects using different reconstruction protocols of cone-beam computed tomography |
| title_fullStr | Evaluation of condyle defects using different reconstruction protocols of cone-beam computed tomography |
| title_full_unstemmed | Evaluation of condyle defects using different reconstruction protocols of cone-beam computed tomography |
| title_short | Evaluation of condyle defects using different reconstruction protocols of cone-beam computed tomography |
| title_sort | evaluation of condyle defects using different reconstruction protocols of cone beam computed tomography |
| topic | Mandibular Condyle Bone Diseases Cone-Beam Computed Tomography Image Enhancement |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242013000600503&lng=en&tlng=en |
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