Polymerization shrinkage, microhardness and depth of cure of bulk fill resin composites

被引：63
|
作者：
Piola Rizzante, Fabio Antonio [1 ]
Duque, Jussaro Alves [2 ]
Hungaro Duarte, Marco Antonio [2 ]
Lia Mondelli, Rafael Francisco [2 ]
Mendonca, Gustavo [3 ]
Ishikiriama, Sergio Kiyoshi [2 ]
机构：
[1] Case Western Reserve Univ, Sch Dent Med, Dept Comprehens Care, 2124 Cornell Rd, Cleveland, OH 44106 USA
[2] Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Al Dr Otavio Pinheiro Brisolla 9-75, BR-17012901 Bauru, SP, Brazil
[3] Univ Michigan, Sch Dent, Div Prosthodont, Dept Biol & Mat Sci, 1011 N Univ Ave, Ann Arbor, MI 48109 USA
来源：
DENTAL MATERIALS JOURNAL | 2019年 / 38卷 / 03期
关键词：
Bulk fill resin composite; Depth of cure; Low viscosity resin composite; Composite materials; Micro-computed tomography; MECHANICAL-PROPERTIES; TOMOGRAPHY-EVALUATION; DENTAL COMPOSITES; BOND STRENGTH; STRESS; CAVITY; RESTORATIONS; CONVERSION; SILORANE; KINETICS;
D O I：
10.4012/dmj.2018-063
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
The present in vitro study assessed the polymerization shrinkage/PS, Knoop microhardness/KHN and depth of cure/DC of 9 different resin composites : Filtek Bulk Fill Flowable (FBF), Surefill SDR flow (SDR), Xtra Base (XB), Filtek Z350XT Flowable (Z3F), Filtek Bulk Fill Posterior (FBP), Xtra Fill (SF), Tetric Evo Ceram Bulk Fill (TBF), Admira Fusion Xtra (ADM), and Filtek Z350XT (Z3XT). PS was assessed with a mu-CT machine, scanning 64 mm(3) samples (n=8) before and after 20 s curing. KHN and DC were performed with a microhardness tester (n=8 for each group) right after 20 s light curing, with 3 readings per depth at every 0.5 mm. Low viscosity resin composites showed lower KHN values when compared with high viscosity resins. Z3XT showed the highest microhardness among the tested resin composites. Z3XT and Z3F showed lower DC when compared with bulk fill resin composites. All bulk fill resin composites presented depth of cure higher than 4.5 mm and similar or lower PS than conventional resin composites.
引用
收藏
页码：403 / 410
页数：8
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