Q: Can Calset heat-treated composite be used for CEMENTING (i.e. LUTING) restorations?
A: Calset can and is being used for cementation of restorations. This is being done by several leading clinicians and
at the University of Iowa Dental School.
Q: What effect does heat treatment with Calset have on polymerization shrinkage?
A: Heat is used to accelerate the polymerization reaction. All composites shrink in the course of polymerization to a
maximum based on their individual properties. Heat just gets the material to reach maximal polymerization with lower
light levels and in less time.
Q: Can composite be left in the Calset all day?
A: Compules can be left in the unit for up to 8 hours without causing premature polymerization of the composite. It
recommended that the Doctor chooses the shade and places the compule(s) in the Calset at that time, then continue
prepping the patient.
Q: Does heating composite damage the pulp?
A: Data obtained at the Medical College of GA School of Dentistry indicate that the injection of composite resin
130°F into a cavity preparation results in a pulpal temperature rise of only 2.9°F (Fred Rueggeberg, Medical School
GA School of Dentistry). This is well below the critical temperature rise thought to be the threshold for pulpal
Q: How long does it take to warm the composite in the Calset?
A: When you turn the Calset on in the morning, it takes approximately 10 minutes to come up to temperature. Once the
has been warmed, it only takes 2-3 minutes to warm the compule of composite.