Aim : The study of the tribological properties of dental materials is a growing and rapidly expanding field. The aim of our research is to investigate the micro-scratch and wear resistance of different restorative dental materials. Materials and methods : Three restorative materials indicated for the treatment of dental caries in the distal area of the dentition were used: dental amalgam without γ ₂ phase, with high Ag content (Cavex Non Gamma-2); a microhybrid resin-based composite material (Gradia Direct posterior); a metal alloy (Duceralloy C) was used as a positive control. All specimens were subjected to micro-scratch resistance test in 1 N, 5 N, 9 N mode, a ball-on-flat wear resistance test at 120,000/240,000 cycles loaded at 50 N. The examined surfaces of the specimens were visualized by optical microscopy and by 3D profilometry of all the specimens tested after 240,000 wear cycles. Results : The results are presented in the form of graphs - for each specimen, for each individual test, and for each individual cycle. The wear resistance of Duceralloy C increases after 240,000 cycles. The wear resistance of Cavex Non Gamma-2 and Gradia Direct posterior decreases with increasing time and friction cycles. Conclusion : The results of this study may help to elucidate the wear mechanisms and provide additional information on the expected changes in the materials tested in clinical practice.