Читать книгу A Practical Approach to Operative Dentistry - Gordon B. Gray - Страница 13

These instruments include those used in removing carious dentine and refining the margins of a cavity. Excavators come in a variety of shapes and sizes and should be used carefully for paring away soft dentine. Marginal trimmers are excellent in removing unsupported enamel. The instruments have sharp cutting edges and must be kept sharp to be effective. Some marginal trimmers have a tip of tungsten carbide so that they can maintain their sharpness.

A double ended PF10 instrument is used to transfer dental cements to the cavity floor where it can spread the material smoothly and evenly. An amalgam gun is used to transfer the mixed filling material into the cavity, where it can be condensed using a variety of double ended amalgam condensers. Composite resin is used increasingly frequently in the restoration of teeth. Composite resin sticks to the surface of stainless steel instruments. A range of gold plated stainless steel instruments is available for transferring and shaping this restorative material.

The final shaping of restorations can be achieved using carvers. These double ended instruments have a leaf shaped blade that can be rested on the surrounding tooth structure to help guide the final shape of the restoration.