, Volume 100, Issue 2, pp 192–198 | Cite as

Properties of indirect composites reinforced with monomer-impregnated glass fiber

  • Naomi Tanoue
  • Takashi Sawase
  • Hideo Matsumura
  • John F. McCabe
Original Article


Sufficient flexural strength is required for long-term clinical use of fixed partial dentures made with fiber-reinforced composite. The flexural strengths of indirect composite materials reinforced with a monomer-preimpregnated glass fiber material were determined to evaluate the compatibility of the composites to glass fiber material. Four types (microhybrid, nanohybrid, microfilled, and minifilled) of indirect composites and a unidirectional long glass fiber material were selected for investigation. The composites were placed on a fiber plate and polymerized in accordance with the respective manufacturer’s instructions. Rectangular bar fiber–composite specimens were machined and the flexural strength was calculated. The flexural strength of each indirect composite was also measured. The microfilled composite with the lowest filler content (70 wt%) exhibited the highest increase ratio using the fiber, although its strength without fiber reinforcement was the lowest (62.1 MPa). The fiber–microhybrid specimen demonstrated the highest mean strength (355.9 MPa), although the filler content of the microhybrid composite was comparatively low (73 wt%). The type of composite material should be considered for the selection of an optimal fiber–composite combination.


Fiber-reinforced composite Filler content Flexural strength Glass fiber Indirect composite 



This study was supported in part by Grants-in-Aid for Scientific Research B (18390525), for Scientific C (20592302), and for Scientific C (23592858) from the Japan Society for the Promotion of Science (JSPS).


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Copyright information

© The Society of The Nippon Dental University 2011

Authors and Affiliations

  • Naomi Tanoue
    • 1
  • Takashi Sawase
    • 2
  • Hideo Matsumura
    • 3
  • John F. McCabe
    • 4
  1. 1.Division of General DentistryNagasaki University HospitalNagasakiJapan
  2. 2.Department of Applied ProsthodonticsNagasaki University Graduate School of Biomedical SciencesNagasakiJapan
  3. 3.Department of Fixed ProsthodonticsNihon University School of DentistryTokyoJapan
  4. 4.Dental Materials Science Unit, School of Dental SciencesUniversity of Newcastle upon TyneNewcastle upon TyneUK

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