Influence of drinks on resin composite: Evaluation of degree of cure and color change parameters

Intrinsic and extrinsic discoloration of dimethacrylate and silorane based composites

“…Many studies have demonstrated that resin-based composites are susceptible to staining from common beverages, especially red wine and coffee. 9,21,23,37,38 In our study, red wine caused the highest discoloration of the restorative materials, followed by coffee, tea, cola, and distilled water. It has been previously reported that alcohol caused some degradation effects on the surface properties of resin composites.…”

“…Camphorquinone (CQ) is the most commonly used photo initiator in dental resin composites and although it is used in small amounts, it significantly influences the color of the material. 21 CQ is a solid yellow compound with an unbleachable chromophore group, and thus a large amount of CQ in the resin formulation leads to undesirable discoloration. 22 The hydrophilicity and degree of water sorption of a resin matrix could affect the staining susceptibility of resin composites.…”

Alteration of dentin–enamel mechanical properties due to dental whitening treatments

“…The mechanical properties are controlled by the ratio and interface between these components, as well as the composite structure. Previous research has focused on measurement of mechanical properties of dental hard tissues to understand vertical crack propagation found in teeth (Marshall et al 2003) and the mechanical abrasion of teeth due to external loading such as that caused by mastication or improper brushing (Luiz et al 2007), both of which result in the loss of hard dental tissues. Further research on the mechanical properties of these hard tissues will allow for the development of a model of effective stress transfer between dissimilar materials, improved dental treatments, and more reliable restorative materials that mimic the resistance to deformation and stress dissipation of natural tooth (Marshall et al 2003).…”

Avaliação da estabilidade de cor e rugosidade superficial de resinas compostas micro-híbridas, submetidas ao processo de envelhecimento artificial acelerado, em função da fotoativação com lâmpada halógena e LED

“…Se o polímero formado se apresentar mais predisposto à interação com a água ou outro solvente, este poderá penetrar na matriz resinosa, ocasionando a hidratação do composto e relaxamento destas ligações, em um efeito conhecido com plastificação. Uma vez no interior da matriz, o solvente pode causar a deterioração da mesma e de sua interface de ligação com a partícula inorgânica (BUCHALLA et al, 2002;EDIDIN et al, 2000;FERRACANE, 2006;SANTERRE, 2004a;LUIZ et al, 2007;SIDERIDOU;TSERKI;PAPANASTASIOU, 2003), bem como em sua cor (SATOU et al, 1989).…”

“…;KIM, S.H. ;KOLBECK et al, 2006;LEE, 2005b;KIM, 2003;30 Introdução LEE et al, 2001b, 2001aPOWERS, 2001LUIZ et al, 2007;MARCHANT;ONYANGO, 2001;MUTLU-SAGESEN et al, 2005;PARAVINA;KIMURA;PIRES-DE-SOUZA FDE et al, 2007; POWERS; BARAKAT;OGURA, 1985;DENNISON;KORAN, 1978;JOHNSTON, 2000JOHNSTON, , 2001RUTTERMANN et al, 2008;RUYTER;NILNER;MOLLER, 1987;SARAFIANOU et al, 2007;SATOU et al, 1989;SCHULZE et al, 2003;SEGHI; GRITZ; KIM, 1990;STAVRIDAKIS;KAKABOURA;KREJCI, 2005;STOBER;GILDE;LENZ, 2001;TAKAHASHI et al, 2008;DAVIDSON, 2004;VICHI et al, 2007;YAP;SIM;LOGANATHAN, 1999;ZAMARRIPA et al, 2008).…”