Non-carious lesions of dental hard tissues are caused by physical-mechanical and chemical factors during a lifetime. They are not associated with bacterial agents and have multifactorial etiology. Tooth wear occurs as a result of three processes: abrasion (the interaction of teeth and foreign bodies), attrition (tooth-to-tooth contact) and erosion (chemical dissolution of dental substance). Abfraction is caused by abnormal occlusal load in the cervical area of the tooth. These mechanisms rarely act separately. They are intertwined and occur simultaneously under the influence of various exogenous and endogenous agents. Early diagnosis and prevention are essential in identifying and stopping further lesion progression and elimination of risk factors. Definitive therapy for non-carious lesions involves minimally invasive restorative procedures or prosthetic solutions in order to preserve the vitality and integrity of an individual tooth, and aesthetic and functional care for the patient. Their selection depends on the etiology of the lesion, the symptoms, age, preferences and financial situation of the patient and the ability to use certain techniques considering the appearance, location and the extent of the lesions.