Customized glass fiber posts that is well adjusted into the root canal and have mechanical properties similar to those of dentin may be a suitable treatment for severely compromised endodontically treated teeth. This article reports a 3-year follow up of severely damaged endodontically treated teeth restored with unidirectional fiber glass customized post and core system instead of a conventional fiber post. The fabrication of this glass fiber customized post is a simple technique, providing an increased volume of fibers into the root canal, and an adequate polymerization of the post-core system. Over a three-year period, the treatments demonstrated good clinical and radiographic characteristics, with no fracture or loss of the post and/or crown. This technique can be considered effective, less invasive, and suitable for restore endodontically treated teeth.
Introdução: O cimento Sealer 26® contém resina epóxi associada ao hidróxido de cálcio, apresentando menor radiopacidade que alguns cimentos endodônticos. Com o intuito de melhorar essa propriedade, tem-se agregado iodofórmio ao pó do cimento. Entretanto, ao executar tal procedimento, desconhecem-se as possíveis alterações nas propriedades físicas e químicas do material. Objetivo: Avaliar a capacidade de selamento marginal apical, a solubilidade e o pH do Sealer 26® puro ou acrescido de iodofórmio em diversas proporções. Material e métodos: Foram manipuladas e submetidas ao teste de solubilidade três associações experimentais de Sealer 26®, puro ou acrescido de iodofórmio. Paralelamente, as combinações foram inseridas em tubos de polietileno e imersas em água destilada, e o pH das soluções foi avaliado nos períodos de 24 horas e 7 dias. Em seguida, 40 raízes de incisivos inferiores extraídos, subdivididos em quatro grupos de dez espécimes cada, foram retrobturados com uma das misturas anteriormente descritas. Imergiram-se as raízes em Rhodamine B, sob vácuo, por 72 horas. Concluída a imersão, os espécimes foram desgastados longitudinalmente, os fragmentos radiculares fotografados, as imagens digitalizadas e a infiltração apical medida pelo programa Image Tool. Os dados obtidos foram submetidos a análise estatística, com nível de significância de 5%. Resultados:Os testes de infiltração e solubilidade não demonstraram diferenças entre os grupos experimentais (p > 0,05). A análise do pH apresentou diferença apenas no período de 24 horas entre o grupo do Sealer 26®puro e o grupo com 1,1 g de iodofórmio (p < 0,05). Conclusão: A adição de iodofórmio ao Sealer 26®, nas proporções descritas, não alterou as propriedades de selamento marginal apical, a solubilidade nem o pH do cimento original.
This study sought to assess the use of chlorhexidine with several excipients as a dentin surface treatment and its effect on marginal adaptation of class V restorations with currentgeneration dentin bonding agents. A total of 120 human third molars were selected and allocated into 12 groups, with standardized buccal class V restorations randomly divided into preconditioned dentin rinsed with: water; water + chlorhexidine; ethanol; or ethanol + chlorhexidine. After rinsing of dentin (previously conditioned with 35% phosphoric acid) with the test solutions, the Adper single bond 2, prime and bond 2.1, and Excite bonding systems were applied randomly. Restorations were performed with Filtek™ Z350 XT composite resin. The resulting specimens were subjected to thermal and mechanical load cycling. Quantitative analysis of marginal adaptation was performed on epoxy replicas by means of scanning electron microscopy. Results were assessed by means of the Kruskal- Wallis test (percentages of continuous margins) and Wilcoxon test (differences between percentages of continuous margins before and after thermal cycling and mechanical loading), at a significance level of p < 0.05. Outcomes in the chlorhexidinetreated groups were not superior to those obtained with other treatments. How to cite this article Cavalheiro JP, Tonetto MR, Borges ÁH, Bandéca MC, dos Santos RSS, de Campos EA, Saad JRC, Dantas AAR, de Andrade MF. Marginal Adaptation of Class V Restorations with Current-Generation Dentin-Bonding Agents: Effect of Different Dentin Surface Treatments. J Contemp Dent Pract 2014;15(3):331-335.
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