What is the primary purpose of using a metal matrix during tooth preparation?

The primary purpose of using a metal matrix during tooth preparation is to protect adjacent teeth. When preparing a tooth for a restoration, such as a filling or crown, the use of a metal matrix helps to shield the neighboring teeth from damage that could occur due to the drilling process or the mechanical stress associated with tooth preparation. This protective measure is crucial, as it minimizes the risk of accidental trauma to adjacent structures, ensuring that the overall integrity of the dental arch is maintained.

While maintaining the path of bur direction, controlling the depth of preparation, and enhancing aesthetic appearance are important considerations in tooth preparation, these elements serve secondary roles compared to the primary function of safeguarding adjacent teeth from potential harm during the procedure.