title: Derangement of composite filler distribution inside syringe-type delivery systems.
abstract: Used and almost emptied syringes of two brands of composites contained material close to the pestle-head that appeared to be more granular and dry, as compared to the composite obtained from unused syringes. The present results suggest that a derangement of filler and matrix phases occurred inside the used syringes when compared to unused controls. Stress imposed on the composite material inside the unused syringes resulted in a comparable derangement of filler and matrix phases. Although this derangement was limited, the effect could contribute to intra- and interlaboratory scattering of data.
authors.affiliation: University of Antwerp-RUCA, Dental Propedeutics, Belgium.
authors.forename: M J
authors.initials: MJ
authors.lastname: Braem
authors.forename: G
authors.initials: G
authors.lastname: Lambrechts
authors.forename: C L
authors.initials: CL
authors.lastname: Davidson
authors.forename: E F
authors.initials: EF
authors.lastname: Vansant
authors.forename: C
authors.initials: C
authors.lastname: Vanhoof
mesh_terms: D000704:Analysis of Variance; D003188:Composite Resins / Q000737:chemistry*; D003793:Dental Restoration, Permanent / Q000295:instrumentation*; D004867:Equipment Design; D013594:Syringes
chemical_list: D003188:Composite Resins