What is required prior to the placement of a class II restoration?

Prior to the placement of a Class II restoration, both a wedge and a matrix band are essential to ensure a proper and effective restorative procedure. The matrix band is used to create a temporary wall around the cavity, allowing for the appropriate shaping and contouring of the restorative material. This is particularly crucial for Class II restorations, which involve posterior teeth where the restoration needs to be contained to prevent material from spilling into the surrounding oral cavity.

The inclusion of a wedge is equally important. The wedge helps to adapt the matrix band tightly against the tooth structure, providing necessary stability and preventing any potential gaps between the matrix and the tooth. It also reduces the risk of overhangs and allows for a tighter interproximal contact with the adjacent tooth. Thus, using both a wedge and a matrix band together ensures that the restoration is not only well-formed but also meets the functional and aesthetic requirements for posterior teeth.

In summary, the combination of both the wedge and matrix band is key to achieving a successful Class II restoration, as they work synergistically to facilitate the proper placement and integrity of the filling material.