Fracture resistance of thermal cycled and endodontically treated premolars with adhesive restorations

The Combined Effect of Dental Post and Cement Materials on Fracture Resistance and Fracture Mode of Endodontically-treated Teeth

“…The crowns fabricated from Ni-Cr alloy were cemented over the composite cores (Filtek Z 350 3M/ESPE, USA) using zinc phosphate cement. Then, all specimens were thermocycled for 500 cycles at 5 and 55 o C to simulate an oral environment (de V Habekost et al 2007). A schematic of the relevant components such as crown, core, post and cement used for restoration of the teeth are shown in Figure 1 and the experimental design applied for the fracture tests is shown in Figure 2.…”

Fracture resistance of endodontically treated premolars with direct composite restorations

“…With the use of Research Randomizer Software (www.ResearchRandomizer.com),[5] the teeth were randomly divided into seven groups of 12.…”

A Comparative Study To Evaluate The Fracture Resistance of Posterior Teeth Restored With Ceramic Inlay And Hybrid Composite Restoration – An In-Vitro Study.

“…32 Direct composite restorations have been considered as one of the most favorable restorations, mainly due to their high compressive strength,tensile strength, excellent esthetics, easier to polish, preservation of more sound tooth structure, cost is less, less abrasive to opposing tooth , less time consuming and the fact that the restoration is placed in a single visit. 33,34 Indirect composite and ceramic restorations are among other commonly practiced posterior restoration techniques but their use is more time-consuming. 35 However, primary reason for failure of Composite resin restoration was postoperative sensitivity, shrinkage of few percent in volume during hardening which leads to polymerization shrinkage and stress , microleakage, marginal discolouration of restoration, fracture of tooth or restoration, wear off, loss of bond between tooth, and restoration or loss of marginal adaptation and secondary caries.…”