An effective method for spreading flowable composites in resin-based restorations.
Cavity lining with flowable composites has been suggested for better marginal adaptation and a reduction in interfacial stress and post-operative sensitivity. The following in vitro study compares the spreading of flowable composite that lines the inner wall of a test cavity using an explorer and a specially designed smooth, oscillating, off-center rotating bur spun at 300 to 600 rpm. Two commercial flowable materials were used in this study.


RESULTS
With use of the rotating bur, a more consistent, uniform cavity lining was achieved. This was not possible using the dental explorer.


CONCLUSIONS
The specially designed rotating bur provides an effective way for clinicians to form a uniform cavity lining.
School of Engineering, Tufts University, Medford, MA 02115, USA. babedian@granite.tufts.edu
Behrouz
B
Abedian
Philip
P
Millstein
D003188:Composite Resins / Q000737:chemistry*; D003736:Dental Cavity Lining / Q000295:instrumentation*; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000295:instrumentation*; D004867:Equipment Design; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008422:Materials Testing; D012212:Rheology; D012399:Rotation; D013314:Stress, Mechanical; D013499:Surface Properties; D014783:Viscosity
D003188:Composite Resins; C466112:Esthet-X; C111840:flowable hybrid composite