Effects of home bleaching agents on hybrid ceramics: mechanical properties and color change.

Background: Home bleaching is a promising option for addressing discolored teeth conservatively. However, its impact on the physical and mechanical properties of indirect restorations remains unknown. This study provides comparative insights into the material responses to aesthetic treatments by assessing the effects of home bleaching agents on two hybrid ceramics: VITA ENAMIC and Grandio Blocs.

Effect of surface treatment and resin cement type on the bond strength of polyetheretherketone to lithium disilicate ceramic.

Background: This study aims to evaluate the effect of surface treatment and resin cement on the shear bond strength (SBS) and mode of failure of polyetheretherketone (PEEK) to lithium disilicate ceramic (LDC). This is suggested to study alternative veneering of PEEK frameworks with a ceramic material.

Methods: eighty discs were prepared from PEEK blank and from lithium disilicate ceramic.

Effect of different intraoral scanners and post-space depths on the trueness of digital impressions.

Background: The trueness of intraoral scanners (IOSs) has been evaluated in many clinical situations. However, the tests of their performance when scanning post-space preparations are still lacking.

Objectives: The aim of the present study was to compare the trueness of the digital impressions of post spaces with different depths, captured by means of different IOSs.

Biaxial flexural strength of different provisional restorative materials under chemo-mechanical aging: An in vitro study.

Purpose: Durability is a critical factor for the success of long-term provisional restorations. This study evaluated the effect of different storage media and cyclic loading on the biaxial flexural strength of different types of provisional materials.

Materials And Methods: Discs (N = 360, 10 × 2 mm) were prepared from different provisional materials; conventional (Protemp 4, Tuff-Temp, Tempron), CAD-CAM milled (VITA CAD-Temp, breCAM.

The effect of Er, Cr:YSGG laser debonding on the bond strength of two ceramic materials to dentin.

Objectives: Evaluating the bond strength of two ceramic materials to dentin after Er,Cr:YSGG laser debonding. Would laser debonding affect the bond strength of ceramic to dentin?

Materials And Methods: Recently extracted human molars were ground to expose dentin. Forty square shaped samples were prepared from CAD/CAM ceramic blocks.

The Development of FVIII Inhibitors in Relation to IL10 Gene Polymorphism in Hemophilia A Egyptian Pediatric Patients.

Background: Development of inhibitors against Factor VIII (FVIII) in hemophilia A patients is a serious complication of therapy. Many cytokines, including interleukin-10 (IL10), may affect inhibitor development; however, literature data are not sufficient to prove this association. The aim of this study was to investigate the relation between FVIII inhibitor formation and IL10-1082A/G polymorphism among Egyptian hemophiliacs.

Quantitative assessment of Wilms tumor 1 (WT1) gene transcripts in Egyptian acute lymphoblastic leukemia patients.

Background: Accurate assessment of minimal residual disease (MRD) in acute lymphoblastic leukemia (ALL) patients after initial chemotherapy is essential to evaluate the efficacy of therapeutic regimens. Wilms tumor 1 (WT1) is a pan-leukemic marker used for identification of the leukemic clone rather than the use of individual specific molecular aberration of ALL.

Methods: Using a real-time quantitative polymerase chain reaction, bone marrow samples from 41 newly diagnosed Egyptian ALL patients; 22 adults and 19 children were examined for WT1 expression.