What is reamers in endodontics?

In endodontics, reamers are rotary instruments used to shape the root canal during root canal treatment. They come in various sizes and shapes and are used in a sequence to gradually widen and shape the root canal space. Reamers are made of stainless steel or nickel-titanium and have flutes or spirals that help to remove debris and dentin shavings from the canal. The purpose of reaming is to create a smooth, clean space for the filling material to be placed, and to ensure adequate removal of infected or necrotic tissue. Reaming should be done with caution to avoid damaging the adjacent tooth structure or perforating the canal wall.