INJECTION MOLDING TECHNIQUE: CORRECTING THE DREADED "BLACK TRIANGLE". v2

The treatment of open gingival embrasures area, also known as black triangles, has always been a frequent reason for consultation in daily clinical practice. It is undoubtedly one of the most important unaesthetic sequelae of periodontal disease Cunliffe et al. evaluated in 2009 the perception of 80 randomly selected patients in terms of the number of visible black triangles and their severity. They concluded that the presence of black triangles was the third most unpleasant aesthetic problem after caries and dark crown margins The technique we are going to describe is known as "injection molding". Based on the use of a patented matrix system (Bioclear. Washington. USA) by Dr. David Clark, which is combined with a refined technique that simultaneously uses flowable composite and conventional heated composite (nanofiller/microhybrid). The clinical procedure consists of 10 steps that must be performed in order.