Heat Development in the Pulp Chamber During Curing Process of Resin-Based Composite Using Multi-Wave LED Light Curing...

Area of Science:

• Dental Materials Science
• Polymer Chemistry
• Biomedical Engineering

Background:

• Light curing is essential for dental restorations.
• Bulk-fill resin composites offer placement efficiency.
• Heat generation during light curing is a clinical concern.

Purpose of the Study:

• To investigate heat development during light curing of a flowable bulk-fill resin-based composite (RBC).
• To assess factors influencing pulpal temperature rise during light curing.
• To evaluate the insulating properties of bulk-fill RBCs.

Main Methods:

• Temperature measurements using calibrated thermocouples.
• Light curing with a multi-wave LED light curing unit (LCU).
• Assessing temperature inside RBC and in the pulpal chamber of extracted teeth.

Main Results:

• Increased RBC thickness reduced pulp chamber temperatures.
• Significant heat variation observed between initial cure and post-cure.
• The initial cure absorbed more LCU irradiation than the post-cure.

Conclusions:

• LCU irradiance is a more critical factor for pulp chamber heating than RBC exothermic reaction.
• Flowable bulk-fill RBCs can provide pulpal insulation.
• Understanding heat dynamics is crucial for safe and effective dental restorations.