Effect of Light-Curing Unit Design and Mouth Opening on Polymerization of Resin Composite Restorations in Molars
In this episode of CDA Oasis Live, Dr. John O’Keefe invites Dr. Richard Price, Professor at the Department of Dental Clinical Sciences at Dalhousie University, to discuss a recently published paper that he co-authored in the Journal of Adhesive Dentistry.
The study evaluated the effect of light curing unit design and mouth opening on the polymerization of bulk-filled resin-based composites.
Here are some of the key takeaways from the conversation:
- The study was an international collaboration and was designed to mimic clinical conditions as much as possible. Two different light designs were used at two different mouth openings (25mm at the incisors & 45mm at the incisors).
- Findings show that the choice of light curing unit did not affect the outcome at 45mm opening, but at 25mm mouth opening the choice of light curing unit had a significance influence on the outcome.
- Dr. Price recommends sourcing a curing light that will access all areas of the mouth. Particular attention should be paid to the polymerization of material at the base of the proximal box in a Class 2 restoration where supplementary curing is recommended from the buccal and the lingual after the matrix band has been removed.
We hope you find the conversation useful. We welcome your thoughts, questions and/or suggestions about this post and other topics. Leave a comment in the box below or send us your feedback by email.
Until next time!
CDA Oasis Team