Composite material having reduced porosity and a process for producing thereof

A process for producing a dental composite material comprising the following steps in the following order:

• a. charging a monomer mixture into the mixing container;
• b. charging a part of the glass filler or of the blend of glass fillers into the mixing container to create a mixture, setting the mixture under a vacuum and mixing the mixture;
• c. charging another part of the glass filler or of the blend of glass fillers into the mixing container to create a mixture, setting the mixture under a vacuum and mixing the mixture;
• d. setting the mixture under a vacuum and mixing it to create a paste;
• e. storing the paste at the temperature of 45-55° C. for 36-50 hours under anaerobic conditions;
• f. setting the paste under a vacuum and mixing the paste to produce a composite material;
• and optionally
• g. adding at least one pigment and optionally a glass filler or a blend of glass fillers and/or a monomer mixture to the composite material to create a mixture, setting the mixture under a vacuum and mixing the mixture to produce a composite material,
• wherein the monomer mixture comprises one or more polymerizable monomers, a polymerization initiator and a polymerization stabilizer, wherein the one or more polymerizable monomers are selected from the group comprising acrylates and methacrylates, wherein the polymerization initiator is camphorquinone and wherein the mixing container is a planteary mixer or a centrifugal mixer.