RESTORATION DESTROYED CROWNS PART OF MULTIROOTED TEETH MODERN ORTHOPEDIC DESIGNS AND MATERIALS
The aetiology of defects crowns part of posterior teeth are basically connected by caries, attrition, abfraction, traumatic damages. Develops a complex of functional infringements shows asynchronization of their reductions, lengthening of chewing period, pains, occurrence of the free chewing movements repeating through equal intervals. The important factor of long-term success of any restoration is formation occlusion with enough and a correct arrangement occlusal contacts. Irrespective of volume of restoration it should be made for achievement of the several purposes: prevention of damage temporomandibular joint, a teeth and muscles and maintenance of long-term functioning of restoration.