Comparative analysis of the radiopacity of MTA and Portland cement in conventional and digital radiographic systems
Introduction: The present study aimed evaluates objectively the radiopacity of MTA and Portland Cement (PC) in conventional and digital radiographic systems. Methods: Five test specimens for each material had been confectioned with 10mm of diameter and 2mm of thickness and exposed on a E/F Kodak I...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Federal do Rio Grande do Sul. Faculdade de Odontologia
2010-11-01
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| Series: | Revista da Faculdade de Odontologia de Porto Alegre |
| Subjects: | |
| Online Access: | https://seer.ufrgs.br/RevistadaFaculdadeOdontologia/article/view/21651 |
| _version_ | 1818912661182611456 |
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| author | Carolina dos Santos Guimarães Ana Paula Veras Sobral Ricardo Ferreira Pedrosa Luciano Barreto Silva Márcia Maria Fonseca da Silveira |
| author_facet | Carolina dos Santos Guimarães Ana Paula Veras Sobral Ricardo Ferreira Pedrosa Luciano Barreto Silva Márcia Maria Fonseca da Silveira |
| author_sort | Carolina dos Santos Guimarães |
| collection | DOAJ |
| description | Introduction: The present study aimed evaluates objectively the radiopacity of MTA and Portland Cement (PC) in conventional and digital radiographic systems.
Methods: Five test specimens for each material had been confectioned with 10mm of diameter and 2mm of thickness and exposed on a E/F Kodak Insight film together with a lead plate and step wedge in a focus-film distance of 40cm, device of 70kVp, 8mA and time of exposition of 0,4 and 0,2 second for the conventional and digital system respectively. The optic densities were measured in the radiograph and the values of pixels, in the digital images. For each exposure a graph was made of the measured values versus mmAl, to generate a radiopacity curve of the step wedge steps, obtaining the correspondence in equivalence of mmAl of the studied materials.
Results: The statistical test of Mann-Whitney showed statistical significant difference between the radiopacity of MTA and PC, whereas it did not between the gotten results in the radiographical systems.
Conclusions: MTA can be used in odontologic clinic because showed radiopacity inside of the standards demanded by specification N○ 57 of the American National Standards/ American Dental Association, whereas PC, not. Therefore, it is necessary the addition of radiopacificators in PC in attempt to increase its radiopacity which is an essential property of odontologic cements. |
| first_indexed | 2024-12-19T23:18:08Z |
| format | Article |
| id | doaj.art-98143db7c5fe41a0bb1cca0fb316061c |
| institution | Directory Open Access Journal |
| issn | 0566-1854 2177-0018 |
| language | English |
| last_indexed | 2024-12-19T23:18:08Z |
| publishDate | 2010-11-01 |
| publisher | Universidade Federal do Rio Grande do Sul. Faculdade de Odontologia |
| record_format | Article |
| series | Revista da Faculdade de Odontologia de Porto Alegre |
| spelling | doaj.art-98143db7c5fe41a0bb1cca0fb316061c2022-12-21T20:02:02ZengUniversidade Federal do Rio Grande do Sul. Faculdade de OdontologiaRevista da Faculdade de Odontologia de Porto Alegre0566-18542177-00182010-11-01513111510.22456/2177-0018.2165113791Comparative analysis of the radiopacity of MTA and Portland cement in conventional and digital radiographic systemsCarolina dos Santos Guimarães0Ana Paula Veras Sobral1Ricardo Ferreira Pedrosa2Luciano Barreto Silva3Márcia Maria Fonseca da Silveira4Faculdade de Odontologia de Pernambuco - Universidade de PernambucoFaculdade de Odontologia de Pernambuco - Universidade de PernambucoFaculdade de Odontologia de Pernambuco - Universidade de PernambucoFaculdade de Odontologia de Pernambuco - Universidade de PernambucoFaculdade de Odontologia de Pernambuco - Universidade de PernambucoIntroduction: The present study aimed evaluates objectively the radiopacity of MTA and Portland Cement (PC) in conventional and digital radiographic systems. Methods: Five test specimens for each material had been confectioned with 10mm of diameter and 2mm of thickness and exposed on a E/F Kodak Insight film together with a lead plate and step wedge in a focus-film distance of 40cm, device of 70kVp, 8mA and time of exposition of 0,4 and 0,2 second for the conventional and digital system respectively. The optic densities were measured in the radiograph and the values of pixels, in the digital images. For each exposure a graph was made of the measured values versus mmAl, to generate a radiopacity curve of the step wedge steps, obtaining the correspondence in equivalence of mmAl of the studied materials. Results: The statistical test of Mann-Whitney showed statistical significant difference between the radiopacity of MTA and PC, whereas it did not between the gotten results in the radiographical systems. Conclusions: MTA can be used in odontologic clinic because showed radiopacity inside of the standards demanded by specification N○ 57 of the American National Standards/ American Dental Association, whereas PC, not. Therefore, it is necessary the addition of radiopacificators in PC in attempt to increase its radiopacity which is an essential property of odontologic cements.https://seer.ufrgs.br/RevistadaFaculdadeOdontologia/article/view/21651dental materialsradiographycontrast mediaradiography, dental, digital. |
| spellingShingle | Carolina dos Santos Guimarães Ana Paula Veras Sobral Ricardo Ferreira Pedrosa Luciano Barreto Silva Márcia Maria Fonseca da Silveira Comparative analysis of the radiopacity of MTA and Portland cement in conventional and digital radiographic systems Revista da Faculdade de Odontologia de Porto Alegre dental materials radiography contrast media radiography, dental, digital. |
| title | Comparative analysis of the radiopacity of MTA and Portland cement in conventional and digital radiographic systems |
| title_full | Comparative analysis of the radiopacity of MTA and Portland cement in conventional and digital radiographic systems |
| title_fullStr | Comparative analysis of the radiopacity of MTA and Portland cement in conventional and digital radiographic systems |
| title_full_unstemmed | Comparative analysis of the radiopacity of MTA and Portland cement in conventional and digital radiographic systems |
| title_short | Comparative analysis of the radiopacity of MTA and Portland cement in conventional and digital radiographic systems |
| title_sort | comparative analysis of the radiopacity of mta and portland cement in conventional and digital radiographic systems |
| topic | dental materials radiography contrast media radiography, dental, digital. |
| url | https://seer.ufrgs.br/RevistadaFaculdadeOdontologia/article/view/21651 |
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