Introduction. Patients increased aesthetic requirements have determined the use of composite resins for the restoration of posterior proximal lesions. But one of their defects is the high polymerization shrinkage. Admira Fusion is the first “nano-ORMOCER” made by Nano-hybrid technology and ORMOCER (ORganic MOdified CERamic) which have a 50% lower polymerization shrinkage compared to conventional composite materials, also lower contraction stress, high surface hardness and marginal resistance. Futurabond U is a universal adhesive which associated with Admira Fusion accomplishes a restoration with aesthetic and functional performances. Case presentation. The patient presented for aesthetic restoration of tooth 45 which showed no painful pathology. For the restoration, Admira Fusion (Voco) and Futurabond U (Voco) were chosen and applied according to minimally invasive direct adhesive technique and for compaction, Compothixo instrument was used. Conclusions. The material and the work method have led to the achievement of a restoration that satisfies the aesthetic and functional principles.