Results: 21

Influence of addition of [2-(methacryloyloxy)ethyl]trimethylammonium chloride to an experimental adhesive

Abstract The aim of this study was to develop an experimental adhesive with addition of [2-(methacryloyloxy)ethyl]trimethylammonium chloride (METAC) and to evaluate its mechanical and biological properties and its in vitro antibacterial activity. An experimental adhesive resin was formulated with Bis-GMA...

Longevity of metal-ceramic crowns cemented with self-adhesive resin cement: a prospective clinical study

Abstract Resin cements are often used for single crown cementation due to their physical properties. Self-adhesive resin cements gained widespread due to their simplified technique compared to regular resin cement. However, there is lacking clinical evidence about the long-term behavior of this material....

Evaluation of phenyl-propanedione on yellowing and chemical-mechanical properties of experimental dental resin-based materials

J. appl. oral sci; 24 (6), 2016
ABSTRACT Objective To evaluate the influence of phenyl-propanedione on yellowing and chemical-mechanical properties of experimental resin-based materials photoactivated using different light curing units (LCUs). Material and Methods Experimental resin-based materials with the same organic matrix (60:...

Effects of the application techniques of self-adhesive resin cements on the interfacial integrity and bond strength of fiber posts to dentin

J. appl. oral sci; 24 (5), 2016
ABSTRACT Objective: To evaluate the influence of an application technique of a glass-fiber post using self-adhesive resin cements on the push-out bond strength and the presence of bubbles in the root thirds. The cements were either applied according to the manufacturer's instruction or using a commercia...

Efeito de inibidores da atividade proteolítica na resistência de união de pino de fibra de vidro à dentina radicular após 12 meses

O estabelecimento de uma camada híbrida adequada no canal radicular representa um dos principais desafios clínicos devido à dificuldade de acesso. Dessa forma, o uso de inibidores proteolíticos poderia tornar-se um recurso favorável. O objetivo deste estudo foi avaliar o efeito de inibidores proteol...

Influência do tempo de condicionamento ácido na alteração superficial, resistência de união e compressão da cerâmica de dissilicato de lítio

Este estudo in vitro propôs analisar os padrões de condicionamento da superfície da cerâmica a base de dissilicato de lítio após três tempos de condicionamento com ácido fluorídrico a 10%, a influência desses tempos na resistência ao cisalhamento de cilindros cerâmicos e à compressão...

Influência na resistência de união de pinos de fibra de vidro com e sem retenções mecânicas em função dos materiais utilizados para cimentação: teste de 'push-out'

Este estudo teve como objetivo avaliar a influência na resistência de união de pinos de fibra de vidro (PFV) com retenções mecânicas (CRM) e sem retenções (SR), associados a três materiais: RelyX ARC cimento resinoso convencional dual com sistema adesivo Adper Single Bond (ASB), convencional de ...

Relined fiberglass post: an ex vivo study of the resin cement thickness and dentin-resin interface

Braz. oral res. (Online); 30 (1), 2016
Abstract The aim of this study was to evaluate the thickness of resin cements in the root thirds when using conventional fiberglass posts (CP) and relined fiberglass posts (RP) in weakened roots and to evaluate the morphological characteristics of the dentin-resin interface. Forty human maxillary anterio...

Optimizing light-cured composite through variations in camphorquinone and butylhydroxytoluene concentrations

Braz. oral res. (Online); 30 (1), 2016
Abstract The use of a free-radical polymerization inhibitor, butylhydroxytoluene (BHT), and a common photo-initiator, camphorquinone (CQ), to reduce polymerization stress in dental composite was investigated in this study. Samples were prepared by mixing Bis-GMA, UDMA, and TEGDMA at a 1:1:1 ratio (wt%), ...

Influence of polymeric matrix on the physical and chemical properties of experimental composites

Braz. oral res. (Online); 29 (1), 2015
Nowadays, the main reasons for replacement of resin-based composite restorations are fracture or problems with the integrity of their interface, such as marginal staining, microleakage, or secondary caries. The aim of the present study was to evaluate the influence of the organic matrix on polymerization...