TITLE:
Properties of a Bulk-Fill Flowable Composite Resin with High Depth of Cure
AUTHORS:
Rimi Gill, Brian J. Millar, Sanjukta Deb
KEYWORDS:
Comoposite, Bulk-Fill, SDR, Properties
JOURNAL NAME:
Open Journal of Stomatology,
Vol.7 No.9,
August
28,
2017
ABSTRACT: Introduction: Dental
composite resin materials are being increasingly used for a variety of purposes
and more recently as a dentine replacement material. Objectives: SDR (Dentsply)
is a flowable, high-resin composite material designed to minimise the effect of
the high shrinkage through the use of a flexible monomer. However the resultant
properties of this material may be a factor that affects the clinical
performance. Methods: Tests
were carried out on SDR and two other commonly used resin-based composite
materials (Herculite XRV, Kerr and
Spectrum TPH, Dentsply) including:
depth of cure according to ISO 4049, degree of cure using Fourier Transform
Infrared Spectroscopy (FTIR), compressive strength using a Universal testing
Machine, water uptake, interaction with Coca-ColaTM and analysis of
thermal transitions using Differential Scanning Calorimetry (DSC). Results: SDR exhibited a high depth
of cure at 4.0 mm and
no difference in degree of cure in comparison with the other two dental
composites. Compressive strength results varied between materials but were significantly lower for SDR (P Conclusions: There are some statistically
significant variations between the physical properties of the materials which are
attributed to the monomer type and lower amount of filler in the flowable
composite that may explain the published clinical outcomes.