Mohamed Fawzy

Al-Azhar University · Department of Crown and Bridge prosthodontics

Insufficient information exists regarding the fracture resistance and failure pattern of newly developed zirconia-reinforced lithium disilicate (ZL, Vita Ambria) onlays. This in vitro study compared the fracture resistance of two types of onlays: monolithic lithium disilicate (LD) and monolithic ZL. The study concluded that monolithic zirconia-rein...

Objective: This study is the impact of resin composite and bio dentine cervical marginal elevation on vertical marginal gap using two CAD/CAM endo-crowns. Materials and Methods: 32 molars were employed, separated into two main groups: Group R, which included 16 molar teeth elevated distally with resin composite each; and Group B, which included 16...

Abstract Objectives: To determine the ferrule length influence on fracture resistance of teeth repaired with two distinct forms of posts, luted using two different cement luting kinds. Materials: Eighty healthy, recently removed, non-caries central maxillary incisors were collected and preserved at room temperature in 0.9% normal saline solution....

Background Insufficient research has been conducted in the literature assessing the performance of zirconia and polyetheretherketone (PEEK) crowns in relation to the essential requirements of successful restorations, such as fracture resistance or margin adaptation. The purpose of this study was to evaluate the effect of the coping materials zircon...

Objective: Implant prosthetic materials capable of reducing mechanical stresses on the implants and supporting structures in case of long span implant supported FDPs are highly required. The purpose of this study was to evaluate the fracture resistance of CAD/CAM long span implant supported fixed dental prostheses fabricated from PEKK compared to P...

Long span implant prosthetic materials capable of reducing biological or mechanical violation on the implants and supporting structures are highly required. With the introduction of high-performance polymers, this situation should be evaluated. Aim: To evaluate the vertical marginal gap of CAD/CAM long span implant supported fixed dental prostheses...

Long span implant prosthetic materials capable of reducing biological or mechanical violation on the implants and supporting structures are highly required. With the introduction of high-performance polymers, this situation should be evaluated. Aim: To evaluate the vertical marginal gap of CAD/CAM long span implant supported fixed dental prostheses...

Objective: This study evaluated the marginal and internal fit of pressable versus machinable polyetheretherketone (PEEK) and versus zirconia copings. Material and Methods: Twenty one copings of lower molar were used in this study, which were divided according to type of material used and method of manufacturing into three main groups: seven specime...