Properties of Microfilled Composite Resins as Influenced by Filler Content

H. St Germain, M. L. Swartz, R. W. Phillips, B. K. Moore, T. A. Roberts

Research output: Contribution to journalArticle

80 Citations (Scopus)

Abstract

Two series of composite resins were prepared with a light-cured urethane dimethacrylate matrix to which varying amounts of two types of silanated silica particles were added. One series contained volume fractions ranging from 15.8 to 28.8% silica particles of 20 nm in diameter (Type I filler) and the other series volume fractions of from 24 to 49.4% of an agglomerated silica particle of 40 nm in diameter (Type II filler). Tests were conducted to determine the effect of filler level on: depth of cure as determined by hardness measurements; color stability in both UV light and water; water sorption with time; hardness; compressive strength; strain behavior in slow compression; and resistance to toothbrush abrasion and wear by hydroxyapatite. Analysis of the data obtained for these two micro filled series indicate that increased filler levels result in trends for increased depth of cure, color stability, hardness, compressive strength, and stiffness, while water sorption and resistance to both toothbrush abrasion and wear by hydroxyapatite were reduced. These trends were more pronounced for the Type II filler series than for the Type I filler series. However, there was a greater differential in filler levels within the Type II series than within the Type I series.

Original languageEnglish (US)
Pages (from-to)155-160
Number of pages6
JournalJournal of Dental Research
Volume64
Issue number2
DOIs
StatePublished - Feb 1985

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Composite Resins
Hardness
Silicon Dioxide
Compressive Strength
Durapatite
Water
Color
Ultraviolet Rays
Light

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Germain, H. S., Swartz, M. L., Phillips, R. W., Moore, B. K., & Roberts, T. A. (1985). Properties of Microfilled Composite Resins as Influenced by Filler Content. Journal of Dental Research, 64(2), 155-160. https://doi.org/10.1177/00220345850640021301

Properties of Microfilled Composite Resins as Influenced by Filler Content. / Germain, H. St; Swartz, M. L.; Phillips, R. W.; Moore, B. K.; Roberts, T. A.

In: Journal of Dental Research, Vol. 64, No. 2, 02.1985, p. 155-160.

Research output: Contribution to journalArticle

Germain, HS, Swartz, ML, Phillips, RW, Moore, BK & Roberts, TA 1985, 'Properties of Microfilled Composite Resins as Influenced by Filler Content', Journal of Dental Research, vol. 64, no. 2, pp. 155-160. https://doi.org/10.1177/00220345850640021301
Germain, H. St ; Swartz, M. L. ; Phillips, R. W. ; Moore, B. K. ; Roberts, T. A. / Properties of Microfilled Composite Resins as Influenced by Filler Content. In: Journal of Dental Research. 1985 ; Vol. 64, No. 2. pp. 155-160.
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