[Etiology, classification and systematic restorative treatment of tooth wear].

Tooth wear has complex and multi-factorial etiologies that result in the surface loss of dental hard tissues. Clinic prevention and restorative technology of tooth wear are challenge for dentists with the increasing numbers of population and the transition of disease age. From the etiology and classification of tooth wear, it is crucial to accurately assess and diagnose a patient presenting with tooth wear. Fluoride application, sealant and resin bonded restoration are beneficial to manage the mild tooth wear. For severe tooth wear, it is need to fabricate the diagnostic wax-up, and resin mock-up is also used to verify the occlusal relationship and vertical dimension increase, and then an interim restoration is also used to adapt the patient to the change of occlusion. Finally, by means of contemporary adhesive technique and min-invasive treatment, the dentist can reconstruct the shape of worn tooth, effectively restore the function of chewing and improve the appearance and pronounciation.