Development and characterization of novel light-curable composite resins with calcium phosphate silicate cement

Xiaorong Wu; Yizhi Liu; Weili Xie

doi:10.1117/12.2263167

11 April 2017 Development and characterization of novel light-curable composite resins with calcium phosphate silicate cement

Xiaorong Wu, Yizhi Liu, Weili Xie

Author Affiliations +

Proceedings Volume 10165, Behavior and Mechanics of Multifunctional Materials and Composites 2017; 101651I (2017) https://doi.org/10.1117/12.2263167
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

Abstract

Dental composite resins are the main direct tooth restorative materials. The recent research and development on dental composite resins focused on developing materials with adequate strength, high wear resistance and low shrinkage. Polymerization shrinkage and its accompanied stress may destroy the interfacial bonds between composite and tooth and lead to recurrent caries. In this paper, novel light-curable composite resins with calcium phosphate silicate cement (CPSC) added to the filler phase were formulated. CPSC was synthesized with tricalcium silicate (C₃S) and calcium phosphate monobasic (CPM). C₃S hydrates to produce calcium silicate hydrate (C-S-H) gel and calcium hydroxide (CH) which accompanied volume expansion. CPM reacts with the CH to precipitate hydroxyapatite (HAP) in situ within C-SH which can largely remove CH. Microstructures of composite resins were characterized by SEM and XRD. Chemicalphysical properties were evaluated include volume change, flexural strength, hardness and elastic modulus. The results showed that shrinkage of dental composite resins with CPSC added to the filler phase could be compensated and reduced effectively.

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Xiaorong Wu, Yizhi Liu, and Weili Xie "Development and characterization of novel light-curable composite resins with calcium phosphate silicate cement", Proc. SPIE 10165, Behavior and Mechanics of Multifunctional Materials and Composites 2017, 101651I (11 April 2017); https://doi.org/10.1117/12.2263167

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