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

Jiani Liu, Hao Zhang, Huijun Sun, Yanru Liu, Wenlin Liu, Bo Su, Shibao Li*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

29 Citations (Scopus)
119 Downloads (Pure)


Dental resin composites (DRCs) with diverse fillers added are widely-used restorative materials to repair tooth defect. The addition of fillers brings an improvement in 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, ect), but also endow some additional functional characteristics (stronger bonding ability to resin matrix, polymerization resistance, and wear resistance, drug release control ability, ect). Moreover, some new morphologies are closely related to the improvement of traditional fillers,
porous filler vs. glass particles, core-sheath fibrous vs. fibrous, ect. 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.
Original languageEnglish
Article number5612
Issue number19
Early online date27 Sept 2021
Publication statusPublished - 1 Oct 2021

Bibliographical note

Funding Information:
This work was supported by the Key Research and Development Program of Shaanxi Province of China (2019SF-018).

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.


  • dental resin composite
  • filler morphology
  • particulate fillers
  • fibrous fillers
  • novelshaped fillers
  • mechanical properties
  • surface treatment


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