Failure modes of Y-TZP crowns at different cusp inclines

Fractographic features of glass‐ceramic and zirconia‐based dental restorations fractured during clinical function

“…Most in-vitro fracture tests of crowns reveal fractures induced by contact damage from the loading device (24,(31)(32)(33)(34), leading to the assumption that occlusal load causes ceramic crowns to fracture from the point of contact and also created a basis for many in-vitro tests and finite element analyses (9,35). The failure modes found both in the present and in previous studies of crowns fractured during clinical function (12,15,36,37) do not match the fracture modes found in vitro (24,25,34,(38)(39)(40). Contact damage was seen as There is a defect at the fracture origin.…”

Fracture strength and fracture patterns of root filled teeth restored with direct resin restorations

“…On the other hand loading crowned teeth was reported to cause cohesive failure within the veneer with fracture initiating at the contact area regardless of the loaded cusp. 43 Clinical implications: Preservation of all remaining sound coronal dentine should be a primary objective in prevention of fractures of root filled teeth. A conservative endodontic access which preserves the axial dentine is recommended whenever possible, but is often precluded by the extent of previous caries and restorations.…”

Farklı yüzey işlemlerinin zirkonyanın ağız içi tamirine etkisi

“…14,15 Ağız içinde kullanılan tam seramik sistemlerin yaygınlaşması ile seramik tamir sistemlerine olan ihtiyaç da artmaktadır. Bu noktada, klinisyenlerin ağız içinde seramik tamiri konusunda en etkili ve kolay metodu kullanmaları önem taşır.…”