Working in his own practice since 1992. The filling techniques from the "amalgam era" proved to be completely unsuitable for composite. The lecturer developed a practical technique to maintain the approximal contact correctly. Composite fillings in the posterior region have taken a firm place in restorative dentistry. Dentists are confronted with the ""problems""of this material every day and hope that the industry will finally develop a material that combines all the good properties of amalgam with the color of a composite. Until truly packable composites are available, we will continue to fight against loose or missing proximal contacts, marginal ridge fractures and food impaction with the technical means known from the amalgam era. To ensure that we do not fail, we must break new ground and recognize the properties of this special material and use it correctly.