Publications by authors named "Dalia A Abuelenain"
Article Synopsis
- Hemostatic agents are commonly used in dental procedures to control bleeding, but they can negatively impact the bonding of resin composites to dentin, making their removal before bonding important.
- The study involved 90 premolar teeth divided into groups treated with either no hemostatic agent, ferric sulfate, or aluminum chloride, with cleanup methods including water, phosphoric acid, katana cleaner, and air abrasion.
- Results showed that the type of hemostatic agent and cleansing method significantly affected bond strength, with phosphoric acid yielding the best results and ferric sulfate showing the lowest bond strength.
BACKGROUND Dentin contamination with hemostatic agents before bonding indirect restorations negatively affects the bond strength. However, the consensus on which materials could be used to clean contamination of hemostatic agents has not been explored. The aim of this study was to assess the effect of Katana Cleaner applied on the surface of dentin contaminated with hemostatic agents on the shear bond strength (SBS) of self-adhesive resin cement by comparing it with three other surface cleaners.
View Article and Find Full Text PDFBackground: Recently, a new generation of high-strength flowable dental composites has been introduced by manufacturers. The manufacturers claim that these materials have enhanced mechanical and physical properties and are suitable for use in a wide range of direct anterior and posterior restorations, even in high-stress bearing areas.
Aim: The objective of this study was to assess certain physical and mechanical properties of these recently introduced high-strength flowable composites in comparison to conventional multipurpose dental composites.
Background: We aim to evaluate the effect of surface conditioning, bonding agents and composite types on surface roughness (SR) and shear bond strength (SBS) of clear aligner composite attachments bonded to ceramics. Methods: One hundred and eighty IPS e.max CAD specimens were prepared.
View Article and Find Full Text PDFBackground/purpose: Increasing the bond strength between the orthodontic brackets and all-ceramic materials is one of the challenges facing orthodontists. The purpose of this study is to assess the shear bond strength (SBS) of metal brackets to two types of all ceramic materials using various surface mechanical and chemical conditioning methods.
Materials And Methods: Sixty ceramic blocks were prepared using two types of all ceramic materials (IPS e.
Purpose: This study compares the FEA-calculated stresses generated within the supporting periodontal structure of a mandibular second molar restored with a full ceramic crown and with a porcelain-fused-to-metal (PFM) crown, each resisting occlusal forces acting at different inclinations.
Materials And Methods: Three-dimensional finite element models representing the crown of an unrestored mandibular second molar and two relevant restoration designs were constructed. Two designs represented the molar restored with a full ceramic crown and with a PFM crown, each cemented with the same resin cement.
Article Synopsis
- This study investigates how properties like shrinkage, modulus, and stress change in dimethacrylate networks as they shift from rubbery to glassy states during photopolymerization.
- Researchers used a BisGMA/TEGDMA resin cured under various light exposure times to monitor conversion rates and related mechanical changes in real-time.
- Results show that conversion rates significantly affect shrinkage and mechanical properties; specifically, shrinkage increases around 40% conversion, while modulus and stress rise sharply as the material approaches its limiting conversion, indicating a complex interplay between curing conditions and material behavior.