The strips have smooth finished edges for patient comfort. They resist solvents, are very strong, will not stretch curl or break. Mylar Strips use as an instrument to achieve a convex inter proximal surface.
Wedges are used to Strong, anatomically contoured avoid laceration of gingival tissue.
Wedging is an essential part of restorative dentistry: their main use is for adapting a matrix band to the proximal part of a cavity. They have a number other uses also.