التفاصيل البيبلوغرافية
| العنوان: |
A new assessment methodology to evaluate the radiopacity of endodontic filling materials. |
| Alternate Title: |
Avaliação da radiopacidade de materiais de obturação endodônticos utilizando um novo modelo experimental. (Portuguese) |
| المؤلفون: |
Bender Hoppe, Carolina, Santos Baldissera, Renata, Kochenborger Scarparo, Roberta, Poli Kopper, Patrícia Maria, Camargo Fontanella, Vania Regina, Soares Grecca, Fabiana |
| المصدر: |
Revista Odonto Ciencia; 2013, Vol. 28 Issue 1, p13-17, 5p |
| مصطلحات موضوعية: |
ANALYSIS of variance, COMPUTER software, DENTAL materials, POLYETHYLENE, ROOT canal treatment, STATISTICS, T-test (Statistics), DENTAL radiography, DATA analysis, DATA analysis software, DESCRIPTIVE statistics, IN vitro studies, MANN Whitney U Test |
| مصطلحات جغرافية: |
BRAZIL |
| Abstract (English): |
Objective: To evaluate the radiopacity of endodontic filling materials using a new experimental in vitro model. Methods: To prevent the overlapping of tissues and anatomical structures, a tissue simulator block was created. Gutta-percha, Resilon cones and polyethylene tubes filled with Epiphany, AH Plus and EndoFill (n=5 of each material) were placed inside the root canal of a tooth positioned in the simulator and radiographed after setting. Five sealer samples were prepared in standard discs and radiographed after setting. The films were processed and digitized. The digital images were analyzed using Adobe Photoshop software; the grayscale values (0 to 256 pixels) were compared using Wilcoxon and Mann-Whitney tests ( P <0.05) for the cones and ANOVA, Tukey, independent and dependent t tests ( P <0.05) for the sealers. Results: In the simulator, AH Plus and Epiphany behaved similarly, presenting higher gray values than those presented by Endofill. In the standard discs, AH Plus was the most radiopaque, followed by Epiphany and Endofill. Resilon presented with higher radiopacity than did gutta-percha, while both were higher than dentin was. Conclusion : All endodontic filling materials presented higher gray values than dentin did, allowing them to be distinguished from the tooth and its surrounding structures. The proposed methodology can be used for the assessment of the radiopacity of endodontic filling materials. [ABSTRACT FROM AUTHOR] |
| Abstract (Portuguese): |
Objetivo: Avaliar a radiopacidade dos materiais de obturação endodônticos usando um novo modelo experimental in vitro. Metodologia: Considerando a sobreposição dos tecidos e estruturas anatômicas, um bloco simulador de tecidos foi criado. Cones de Guta-percha e Resilon e tubos de polietileno preenchidos pelos cimentos Epiphany, AH Plus e Endofill (n=5 de cada material) foram posicionados dentro de um canal radicular de um dente que foi posicionado no simulador e radiografias foram realizadas. Além disso, cinco amostras de cada cimento foram preparadas em discos padronizados e radiografadas. Os filmes foram processados e digitalizados. As imagens digitais foram analisadas pelo programa Adobe Photoshop e valores de escala de cinza (0 a 256 pixels) foram comparados usando os testes Wilcoxon e Mann-Whitney ( P <0,05) para avaliar os cones e ANOVA, Tukey, Testes t independente e dependente ( P <0,05) para avaliar os cimentos. Resultados: No simulador de tecidos, o AH Plus e o Epiphany se comportaram semelhantemente, apresentando valores de cinza maiores do que o Endofill. Nos discos padronizados, o AH Plus foi o cimento mais radiopaco, seguido pelo Epiphany e Endofill. Os cones de Resilon se mostraram mais radiopacos do que a guta-percha e ambos mais do que a dentina. Conclusão: Todos os materiais obturadores endodônticos apresentaram valores de cinza maiores do que a dentina, o que permite distingui-los do dente e das estruturas anatômicas em sua volta. A metodologia proposta pode ser usada para avaliação a radiopacidade de materiais obturadores endodônticos. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Supplemental Index |