Effect of resin-composite filler particle size and shape on shrinkage-stress

Dental Materials : Official Publication of the Academy of Dental Materials
Julian D SatterthwaiteDavid C Watts

Abstract

The aim of this study was to investigate the effect of variations in filler particle size and shape on the polymerization shrinkage-stress kinetics of resin-composites. A model series of 12 VLC resin-composites were studied. The particulate dispersed phase volume fraction was 56.7%: these filler particles were systematically graded in size, and further were either spherical or irregular. A Bioman instrument (cantilever beam method) was employed to determine the shrinkage-stress kinetics following 40s irradiation (600 mW/cm(2)) at 23°C (n=3). All data were captured for 60 min and the final shrinkage-stress calculated. Shrinkage-stress varied between 3.86 MPa (SD 0.14) for S3 (spherical filler particles of 500 nm) and 8.44 MPa (SD 0.41) for I1 (irregular filler particles of 450 nm). The shrinkage-stress values were generally lower for those composites with spherical filler particles than those with irregular filler particles. The differences in shrinkage-stress with filler particle size and shape were statistically significant (p<0.001). Composites with spherical filler particles exhibit lower shrinkage-stress values compared to those with irregular filler particles. Shrinkage-stress and shrinkage-stress rate vary in a complex ma...Continue Reading

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Citations

Feb 19, 2014·Dental Materials : Official Publication of the Academy of Dental Materials·Fang LiHockin H K Xu
Mar 29, 2014·Dental Materials : Official Publication of the Academy of Dental Materials·Parag K Shah, Jeffrey W Stansbury
Jun 24, 2014·Dental Materials : Official Publication of the Academy of Dental Materials·Chen ChenHockin H K Xu
Jun 22, 2014·Dental Materials : Official Publication of the Academy of Dental Materials·Xiaoxu LiangJingwei He
Dec 11, 2014·Materials Science & Engineering. C, Materials for Biological Applications·K M WeigM F Costa
Feb 27, 2016·Dental Materials : Official Publication of the Academy of Dental Materials·Zhengzhi Wang, Martin Y M Chiang
Mar 13, 2014·Microscopy Research and Technique·Fernanda ValentiniNoéli Boscato
Feb 24, 2015·Dental Materials : Official Publication of the Academy of Dental Materials·Annelies Van EndeBart Van Meerbeek
Oct 7, 2016·Dental Materials : Official Publication of the Academy of Dental Materials·Wojtek LibeckiMatthias Kern
Nov 6, 2015·Journal of Applied Oral Science : Revista FOB·Luciano Ribeiro Correa NettoEduardo Moreira da Silva
Dec 2, 2017·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Kunneng LiangHockin H K Xu
Jan 24, 2019·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Edoardo MantovaniTommaso Castroflorio
Sep 14, 2017·Brazilian Oral Research·Carlos José SoaresAntheunis Versluis
Mar 10, 2021·Dental Materials : Official Publication of the Academy of Dental Materials·Hamad AlgamaiahDavid C Watts
Aug 28, 2020·Dental Materials : Official Publication of the Academy of Dental Materials·Siying TaoJiyao Li
Apr 18, 2018·Dental Materials : Official Publication of the Academy of Dental Materials·Jingwei He, Hilde M Kopperud
Apr 21, 2018·Dental Materials : Official Publication of the Academy of Dental Materials·Ruili WangX X Zhu
Nov 30, 2018·Dental Materials : Official Publication of the Academy of Dental Materials·Hongyan ChenMeifang Zhu

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