[Clinical experience with Beta-Quartz Mega block fillings in molars]

The use of glass-ceramic inserts in the latest years should provide a method improving the durability of directly placed composite restorations. These "mega-blocks"--composed of lithium-aluminium-silica glass-eliminate the disadvantages of composite filling in molar teeth. Authors performed 180 "mega-block" fillings in 112 patients. Control examinations (clinical and X-ray) after one year gave good results. The need for additional treatment time is minimal, and no specialized instrumentation or equipment is necessary. However, the quality of an insert restoration, like any other restoration, depends on the skill and knowledge of the operator.