A peer-reviewed course written by Nathanial C. Lawson, DMD, PhD
The goal of this course is to describe the materials used for matrices in class II composites and the wedges and rings used to adapt sectional matrix bands and provide tooth separation. Different matrix bands (sectional and circumferential), wedges (wooden, plastic, solid, hollow), and rings will be described. This review will summarize advantages and disadvantages of various options for this armamentarium. Additionally, several clinical applications of PTFE tape for class II restorations will be described. Finally, techniques for matrix placement in difficult clinical scenarios will be discussed.
“Materials and techniques for restoring contacts in class II composites” Educational objectives
- Describe the different types of sectional matrix bands
- Differentiate between solid and hollow wedges and learn how to use them
- Identify different types of separating rings and their separation force
- Learn tricks for using PTFE tape while placing a matrix
Nathaniel Lawson, DMD, PhD, is the director of the Division of Biomaterials at the University of Alabama at Birmingham School of Dentistry and the program director of the biomaterials residency program. He has published extensively on the topics of mechanical, optical, and biologic properties of dental materials and clinical evaluation of new dental materials. He lectures on clinical applications for modern dental materials and works as a general dentist in the UAB Faculty Practice.
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