Journal of Materials Science

, Volume 54, Issue 5, pp 3878–3892 | Cite as

Design and efficient fabrication of micro-sized clusters of hydroxyapatite nanorods for dental resin composites

  • Shu-Ning Zhao
  • Dan-Lei Yang
  • Dan Wang
  • Yuan PuEmail author
  • Yuan Le
  • Jie-Xin WangEmail author
  • Jian-Feng Chen


Dental resin-based composites have been used for more than 50 years. The size and the structure of inorganic filler have a great effect on the mechanical properties of the composite resin. In this study, novel micro-sized clusters of hydroxyapatite nanorods (MCHN) were designed and conveniently fabricated by spray drying combined with heat treatment. The effects of the aspect ratio of primary hydroxyapatite nanorods (HN), suspension concentration for spray drying and heat treatment temperature were explored. The results indicated that HN with a lower aspect ratio of 2 (HN-2) and a heat treatment temperature of 500 °C were beneficial to the construction of high-performance MCHN (MCHN-2). As compared to HN-2, MCHN-2 had a further increased filling amount by 10%. More importantly, the flexural strength, flexural modulus and compressive strength of the composite resin were greatly improved by 36.3%, 11.4% and 56.6%, respectively. Therefore, it could be envisioned that MCHN could have a great potential in dental restorative application.



This work was financially supported by the National Key Research and Development Program of China (2016YFA0201701/2016YFA0201700), National Natural Science Foundation of China (21878015 and 21622601) and National Key Basic Research Program of China (2015CB932100).


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.State Key Laboratory of Organic-Inorganic CompositesBeijing University of Chemical TechnologyBeijingPeople’s Republic of China
  2. 2.Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijingPeople’s Republic of China
  3. 3.Research Center of the Ministry of Education for High Gravity Engineering and TechnologyBeijing University of Chemical TechnologyBeijingPeople’s Republic of China

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