Pathological abrasions are a challenge in the everyday practice of a dentist due to their complex etiology. This article, based on the case of a patient with pathological tooth wear, describes the stages of preparation as well as the clinical and laboratory stages of the flow injection method. There are various methods of rebuilding lost tooth tissues, but the flow injection method stands out from the rest. Technically, it is relatively simple for a dentist to perform, if it is well planned. The procedure protocol allows achieving high aesthetics and functionality by duplicating the diagnostic waxing. Moreover, the improvement of strength properties of flow-type composite materials makes it possible to reconstruct lost tooth tissues with better durability. In addition, the aspect of obtaining quick results and a more favourable financial factor often prompts patients to choose this method of restoration compared to conventional prosthetics. The treatment presented in the study consisted of composite reconstruction of teeth in the lower arch and molars in the upper arch, permanent all-ceramic restorations (crowns) and a composite adhesive bridge reinforced with glass fiber. As a result of this prosthetic rehabilitation process, the correct occlusion height, proper occlusal contacts and improved aesthetics were achieved.