2010
DOI: 10.1590/s1806-83242010000200019
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Effect of curing mode on the hardness of dual-cured composite resin core build-up materials

Abstract: This study evaluated the Knoop Hardness (KHN) values of two dual-cured composite resin core build-up materials and one resin cement exposed to different curing conditions. Two dual-cured core buildup composite resins (LuxaCore  -Dual, DMG; and FluoroCore  2, Dentsply Caulk), and one dual-cured resin cement (Rely X ARC, 3M ESPE) were used in the present study. The composite materials were placed into a cylindrical matrix (2 mm in height and 3 mm in diameter), and the specimens thus produced were either light-… Show more

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Cited by 19 publications
(13 citation statements)
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“…In a conventional type of "Touch and Cure'' system, polymerization starts when the adhesive comes in contact with the core material. Therefore, corresponding core materials and adhesives can only be used in combination 11) . On the other hand, twobottle type chemical cure adhesives could adhere with resin cements, light-cure resin composites and resin core materials.…”
Section: Introductionmentioning
confidence: 99%
“…In a conventional type of "Touch and Cure'' system, polymerization starts when the adhesive comes in contact with the core material. Therefore, corresponding core materials and adhesives can only be used in combination 11) . On the other hand, twobottle type chemical cure adhesives could adhere with resin cements, light-cure resin composites and resin core materials.…”
Section: Introductionmentioning
confidence: 99%
“…17 No scientific evidence supports the effectiveness of the physical properties of resin cements, including their bonding, when an appropriate post space is produced. 16 Dual-polymerizing foundation composite resins showed superior KHNs, an important physical property of the material, to dual-polymerizing resin cements even at greater cavity depths. Therefore, when luting prefabricated post and core material or coronal-radicular foundation, it may be preferable to use dual-polymerizing foundation composite resins.…”
Section: Discussionmentioning
confidence: 95%
“…Dual-polymerizing foundation composite resins have been developed to allow the clinician to build extended foundation restorations efficiently, and in bulk, since the chemical mode of the polymerization process can initiate resin polymerization at greater depths. 15 Recently, dual-polymerizing foundation composite resins have also been used to lute prefabricated posts into flared root canals, 16 where a thick composite resin layer would normally be present between the fiber-reinforced post and root walls. 17 However, an excessively thick cement layer in that region may not confer the requisite mechanical properties to withstand occlusal loading.…”
Section: Introductionmentioning
confidence: 99%
“…Diversos estudos revelaram que o mecanismo de ativação exclusivamente químico é menos efetivo que o dual (Fonseca, 2001;Attar et al, 2003;Fonseca et al, 2004;Shimura et al, 2005;Dutra-Corrêa et al, 2006;Arrais et al, 2010).…”
Section: Cimentos Resinosos De Dupla Ativaçãounclassified
“…Essa compensação, seria possibilitada pela ativação química do material, que ocorre mesmo em regiões mais profundas do preparo, em que a chegada de luz é limitada (Hofmann et al, 2001). Diversos estudos revelaram que o mecanismo de ativação química sozinho é menos efetivo que o dual (Fonseca, 2001;Attar et al, 2003;Fonseca et al, 2004;Shimura et al, 2005;Dutra-Corrêa et al, 2006;Arrais et al, 2010).…”
Section: Introductionunclassified