2010
DOI: 10.1590/s1678-77572010000600006
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Abstract: ObjectivesThe aim of this study was to evaluate the influence of the contact of two lipsticks, one with common fixer and one with ultra fixer, on the color of a composite resin immediately, 30 min and 24 h after photoactivation. Material and methodsNinety specimens were prepared with a composite resin, Filtek-Z350. Specimens were polished and divided into 9 groups (n=10) according to time elapsed after photoactivation (A- immediately; B- 30 min; C- 24 h) and the contact with lipstick (UF- lipstick with ultra f… Show more

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Cited by 9 publications
(51 citation statements)
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References 30 publications
(51 reference statements)
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“…Visual perception was in accordance with results obtained by device, as occurred in the present work . Galvão and collaborators (2010) and Abidi and collaborators (2014) used the CIELAB system to evaluate the influence on the colour of two lipsticks formulation made of composite resin employed on dental procedure . The authors concluded that the instrumental evaluation reduced the potential error on colour analysis compared to visual methods and increased the reliability of measure.…”
Section: Resultssupporting
confidence: 88%
“…According to Bagheri et al, 5 if the composite is able to absorb water, then it is also capable of absorbing other fluids, resulting in its discoloration 17 and in the reduction of its mechanical properties due to polymer matrix degradation. 18 Fluid absorption occurs mainly as direct absorption in the resin matrix.…”
Section: Discussionmentioning
confidence: 99%
“…Some of the intrinsic factors studied are resin matrix composition, 5-8 filler particles, 9 photo-initiator and inhibitor, 10 polymerisation degree, 11 and quantity of opacifiers. 12 On the other hand, a few of the extrinsic factors that have been considered are staining substances in contact with composite resin restorations, 9,13 ultraviolet radiation, 8 temperature changes, 14 and beverages. 9,15 Although a reasonable number of researchers have published studies on the performance of silorane-based composites (SBC), 1,16-18 the majority of them have focused on the mechanical properties.…”
Section: Introductionmentioning
confidence: 99%
“…Com base em alguns estudos recentes 21,[24][25][26] e para simular espessuras em maior conformidade com a realidade clínica no que se refere a restaurações de resina composta, o presente estudo utilizou corpos de prova de 2 mm de espessura.…”
Section: Discussionunclassified
“…The color was measured according to the CIE L*a*b* color scale relative to the standard illuminant D65 over a white background using a spectrophotometer (EasyShade Advanced, Vita Zahnfabrik, Bad Säckingen, Germany) according to the readout region: (1) restoration top surface coupled to a teflon specimen holder (4 × 4 mm and 2‐mm thick); (2) bonded interface coupled to a different specimen holder (4 × 2 mm and 4‐mm thick) at the following times: (2.1) 24 hours after finishing and polishing procedures; (2.2) after 300 hours of ultraviolet (UV) accelerated artificial aging (AAA). For the color evaluation of the bonded interface the specimens were laterally placed and the spectrophotometer's tip was positioned at the tooth/restoration interface to assure color measurement of this specific area.…”
Section: Methodsmentioning
confidence: 99%