The Development of Filler Morphology in Dental Resin Composites: A Review

Dental resin composites (DRCs) with diverse fillers added are widely-used restorative materials to repair tooth defects. The addition of fillers brings an improvement in the mechanical properties of DRCs. In the past decade, diverse fillers have emerged. However, the change of emerging fillers mainl...

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Bibliographic Details
Published in:Materials 2021-09, Vol.14 (19), p.5612
Main Authors: Liu, Jiani, Zhang, Hao, Sun, Huijun, Liu, Yanru, Liu, Wenlin, Su, Bo, Li, Shibao
Format: Article
Language:English
Subjects:
Bonding strength
Chemical composition
Classification
Composite materials
Crack propagation
Curing
Dental materials
Fillers
Hydroxyapatite
Mechanical properties
Morphology
Nanoparticles
Particle size
Polymerization
Resins
Review
Sheaths
Silicon dioxide
Trends
Viscosity
Wear resistance
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Summary:Dental resin composites (DRCs) with diverse fillers added are widely-used restorative materials to repair tooth defects. The addition of fillers brings an improvement in the mechanical properties of DRCs. In the past decade, diverse fillers have emerged. However, the change of emerging fillers mainly focuses on the chemical composition, while the morphologic characteristics changes are often ignored. The fillers with new morphologies not only have the advantages of traditional fillers (particles, fibrous filler, etc.), but also endow some additional functional characteristics (stronger bonding ability to resin matrix, polymerization resistance, and wear resistance, drug release control ability, etc.). Moreover, some new morphologies are closely related to the improvement of traditional fillers, porous filler vs. glass particles, core-sheath fibrous vs. fibrous, etc. Some other new morphology fillers are combinations of traditional fillers, UHA vs. HA particles and fibrous, tetrapod-like whisker vs. whisker and fibrous filler, mesoporous silica vs. porous and silica particles. In this review, we give an overall description and a preliminary summary of the fillers, as well as our perspectives on the future direction of the development of novel fillers for next-generation DRCs.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14195612