دورية أكاديمية
Radiodensity evaluation of dental impression materials in comparison to tooth structures
| العنوان: | Radiodensity evaluation of dental impression materials in comparison to tooth structures |
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| المؤلفون: | Rodrigo Borges Fonseca, Carolina Assaf Branco, Francisco Haiter-Neto, Luciano de Souza Gonçalves, Carlos José Soares, Hugo Lemes Carlo, Mário Alexandre Coelho Sinhoreti, Lourenço Correr-Sobrinho |
| المصدر: | Journal of Applied Oral Science, Vol 18, Iss 5, Pp 467-476 (2010) |
| بيانات النشر: | University of São Paulo, 2010. |
| سنة النشر: | 2010 |
| المجموعة: | LCC:Dentistry |
| مصطلحات موضوعية: | Radiography, Dental impression materials, Enamel, Dentin, Human tooth, Bovine tooth, Dentistry, RK1-715 |
| الوصف: | In the most recent decades, several developments have been made on impression materials' composition, but there are very few radiodensity studies in the literature. It is expected that an acceptable degree of radiodensity would enable the detection of small fragments left inside gingival sulcus or root canals. OBJECTIVE: The aim of this study was to determine the radiodensity of different impression materials, and to compare them to human and bovine enamel and dentin. MATERIAL AND METHODS: Twenty-five impression materials, from 5 classes, were studied: addition and condensation silicones, polyether, polysulfides and alginates. Five 1-mm-thick samples of each material and tooth structure were produced. Each sample was evaluated 3 times (N=15), being exposed to x-ray over a phosphor plate of Digora digital system, and radiodensity was obtained by the software Digora for Windows 2.5 Rev 0. An aluminum stepwedge served as a control. Data were subjected to Kruskal-Wallis and Dunn's method (α=0.05). RESULTS: Different materials and respective classes had a different behavior with respect to radiodensity. Polysulfides showed high values of radiodensity, comparable to human enamel (p>0.05), but not to bovine enamel (p |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1678-7757 1678-7765 |
| العلاقة: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572010000500007Test; https://doaj.org/toc/1678-7757Test; https://doaj.org/toc/1678-7765Test |
| DOI: | 10.1590/S1678-77572010000500007 |
| الوصول الحر: | https://doaj.org/article/c7c7f556d98c462e9f365b273315ab56Test |
| رقم الانضمام: | edsdoj.7c7f556d98c462e9f365b273315ab56 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16787757 16787765 |
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| DOI: | 10.1590/S1678-77572010000500007 |