KMID : 1034420200450020011
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Restorative Dentistry & Endodontics 2020 Volume.45 No. 2 p.11 ~ p.11
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Micro-computed tomographic evaluation of the flow and filling ability of endodontic materials using different test models
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Torres Fernanda Ferrari Esteves
Guerreiro-Tanomaru Juliane Maria Chavez-Andrade Gisselle Moraima Pinto Jader Camilo Berbert Fabio Luiz Camargo Villela Tanomaru-Filho Mario
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Abstract
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Objectives: This study compared the flow and filling of several retrograde filling materials using new different test models.
Materials and Methods: Glass plates were manufactured with a central cavity and 4 grooves in the horizontal and vertical directions. Grooves with the dimensions used in the previous study (1 ¡¿ 1 ¡¿ 2 mm; length, width, and height respectively) were compared with grooves measuring 1 ¡¿ 1 ¡¿ 1 and 1 ¡¿ 2 ¡¿ 1 mm. Biodentine, intermediate restorative material (IRM), and mineral trioxide aggregate (MTA) were evaluated. Each material was placed in the central cavity, and then another glass plate and a metal weight were placed over the cement. The glass plate/material set was scanned using micro-computed tomography. Flow was calculated by linear measurements in the grooves. Central filling was calculated in the central cavity (mm3) and lateral filling was measured up to 2 mm from the central cavity.
Results: Biodentine presented the least flow and better filling than IRM when evaluated in the 1 ¡¿ 1 ¡¿ 2 model. In a comparison of the test models, MTA had the most flow in the 1 ¡¿ 1 ¡¿ 2 model. All materials had lower lateral filling when the 1 ¡¿ 1 ¡¿ 2 model was used.
Conclusions: Flow and filling were affected by the size of the test models. Higher grooves and materials with greater flow resulted in lower filling capacity. The test model measuring 1 ¡¿ 1 ¡¿ 2 mm showed a better ability to differentiate among the materials.
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KEYWORD
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Dental materials, Endodontics, Methods, X-ray microtomography
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