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Surface modifications of short quartz fibers and their influence on the physicochemical properties and in vitro cell viability of dental composites.
Wang, Junjun; Chen, Hongyan; Liu, Hongmei; Wang, Ruili; Qin, Zongyi; Zhu, Meifang.
Afiliación
  • Wang J; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China.
  • Chen H; Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong Univ
  • Liu H; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China.
  • Wang R; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China. Electronic address: wangruili@dhu.edu.
  • Qin Z; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China.
  • Zhu M; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China. Electronic address: zhumf@dhu.edu.cn.
Dent Mater ; 40(8): e1-e10, 2024 Aug.
Article en En | MEDLINE | ID: mdl-38821838
ABSTRACT

OBJECTIVE:

Although glass fibers are more common, quartz fibers (QFs) are also considered as the ideal reinforcing material in dentistry, due to their superior mechanical strength, high purity, and good photoconductive properties. However, the relatively inert surfaces limit their further applications. Therefore, the aim of this study is to modify the fiber surface properties to improve the interfacial interactions with polymeric resins.

METHODS:

In this study, we systematically introduced four different surface modification strategies onto short quartz fibers (SQFs) for the preparation of dental composites. Particularly, the acid etching was a facile way to create mechanical interlocking structures. In addition, the silanization process, the sol-gel treatment, and the polymer grafting were further proposed to increase the surface roughness and the reactive sites. The effect of surface modifications on the fiber surface morphological changes, mechanical properties, water stability, and in vitro cell viability of dental composites were investigated.

RESULTS:

Among all surface-modified SQFs, SQFs-POSS (SQFs modified with methacrylate-POSS) exhibited the roughest surface morphology and highest grafting rates compared with other three materials. Furthermore, all these SQFs were applied as reinforcements to make dimethacrylate-based dental resin composites. Of all fillers, SQFs-POSS demonstrated the best reinforcing effect, providing significantly higher improvements of 55.7 %, 114.3 %, and 164.7 % for flexural strength, flexural modulus, and breaking energy, respectively, over those of SQFs-filled composite. The related reinforcing mechanism was further investigated. The SQFs-POSS-filled composite also exhibited the best water stability performance and in vitro cell viability.

SIGNIFICANCE:

This work provided valuable insights into the optimization of filler-matrix interaction through fiber surface modifications. Specifically, SQFs-POSS markedly outperformed other formulations in terms of the physicochemical performance and in vitro cytotoxicity, which offers possibilities for developing high-performance dental composites for clinical applications in restorative dentistry.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cuarzo / Propiedades de Superficie / Ensayo de Materiales / Supervivencia Celular / Resinas Compuestas Límite: Animals Idioma: En Revista: Dent Mater Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cuarzo / Propiedades de Superficie / Ensayo de Materiales / Supervivencia Celular / Resinas Compuestas Límite: Animals Idioma: En Revista: Dent Mater Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido