Author
Shaymaa E. Elsaka
Bio: Shaymaa E. Elsaka is an academic researcher from Mansoura University. The author has contributed to research in topics: Bond strength & Medicine. The author has an hindex of 23, co-authored 46 publications receiving 1553 citations.
Topics: Bond strength, Medicine, Flexural strength, Adhesive, Cubic zirconia
Papers
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TL;DR: The VS zirconia reinforced lithium silicate glass-ceramic revealed higher mechanical properties compared with IC lithium disilicate glass -ceramic and revealed a lower probability of failure and a higher strength according to Weibull analysis.
293 citations
TL;DR: GI-containing 3% (w/w) TiO(2) nanoparticles is a promising restorative material with improved mechanical and antibacterial properties and may be potentially used for higher stress-bearing site restorations such as Class I and II.
191 citations
TL;DR: The effect of surface treatments on the bond strength of novel CAD/CAM restorative materials to resin cement is material dependent and the VE/BF CAD/ CAM material provided higher bond strength values compared with the LU/ BF CAD-CAM material.
Abstract: PURPOSE To evaluate the effect of different surface treatments on the microtensile bond strength (μTBS) of novel CAD/CAM restorative materials to self-adhesive resin cement. MATERIALS AND METHODS Two types of CAD/CAM restorative materials (Vita Enamic [VE] and Lava Ultimate [LU]) were used. The specimens were divided into five groups in each test according to the surface treatment performed; Gr 1 (control; no treatment), Gr 2 (sandblasted [SB]), Gr 3 (SB+silane [S]), Gr 4 (hydrofluoric acid [HF]), and Gr 5 (HF+S). A dual-curing self-adhesive resin cement (Bifix SE [BF]) was applied to each group for testing the adhesion after 24 h of storage in distilled water or after 30 days using the μTBS test. Following fracture testing, specimens were examined with a stereomicroscope and SEM. Surface roughness and morphology of the CAD/CAM restorative materials were characterized after treatment. Data were analyzed using ANOVA and Tukey's test. RESULTS The surface treatment, type of CAD/CAM restorative material, and water storage periods showed a significant effect on the μTBS (p 0.05). On the other hand, for the VE/BF system, surface treatment with HF+S showed higher bond strength values compared with SB and HF surface treatments (p<0.05). Surface roughness and SEM analyses showed that the surface topography of CAD/CAM restorative materials was modified after treatments. CONCLUSION The effect of surface treatments on the bond strength of novel CAD/CAM restorative materials to resin cement is material dependent. The VE/BF CAD/CAM material provided higher bond strength values compared with the LU/BF CAD/CAM material.
147 citations
TL;DR: PG/PTN instrumentation method revealed better performance with fewer canal aberrations when compared with instrumentation performed with PF/ PTN or PTN only.
132 citations
TL;DR: PR and CZ repair systems significantly enhanced the bond strength of nanohybrid resin composite to VE CAD/CAM hybrid ceramic when compared with the other tested repair systems.
Abstract: This study evaluated the repair bond strength of a nanohybrid resin composite to a novel CAD/CAM hybrid ceramic based on four intraoral ceramic repair systems. Vita Enamic (VE) CAD/CAM hybrid ceramic was used in this study. Specimens were divided into five test groups according to the repair method performed on the ceramic surface: Gr C (No treatment; control); Gr CZ (Cimara Zircon); Gr PR (Porcelain Repair); Gr CR (Clearfil Repair); and Gr CS (CoJet system). Nanohybrid resin composite (GrandioSO) was packed onto treated ceramic surfaces for adhesion testing using microtensile bond strength test. Debonded specimens were examined with a stereomicroscope and SEM to determine the fracture mode. Data were analyzed using ANOVA and Tukey's HSD test. PR and CZ repair systems significantly enhanced the bond strength of nanohybrid resin composite to VE CAD/CAM hybrid ceramic when compared with the other tested repair systems.
77 citations
Cited by
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31 Oct 2001
TL;DR: The American Society for Testing and Materials (ASTM) as mentioned in this paper is an independent organization devoted to the development of standards for testing and materials, and is a member of IEEE 802.11.
Abstract: The American Society for Testing and Materials (ASTM) is an independent organization devoted to the development of standards.
3,792 citations
01 Jan 2011
675 citations
TL;DR: The present article has tried to review the latest research on chitosan based tissue engineering constructs, drug delivery vehicles as well as dental care products to pave a way for future applications in the field of biomedical innovation and regenerative medicine.
488 citations
TL;DR: The VS zirconia reinforced lithium silicate glass-ceramic revealed higher mechanical properties compared with IC lithium disilicate glass -ceramic and revealed a lower probability of failure and a higher strength according to Weibull analysis.
293 citations
TL;DR: Current literature suggests that the restorative material might influence the development of secondary caries in different ways, and it should be emphasized that patient-related factors remain the most important determinant of secondaryCaries.
240 citations