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  • م.م ايناس شهاب احمد
  • Assist. Prof. M.S.c. Enas Shihab Ahmed
  • تدريسي : طب الاسنان
  • Teaching : Collage of Dentistry
  • ماجستير تقنيات الاسنان
  • M.Sc. Dental Technology
  • dr.inasshehab@bauc14.edu.iq
  • enasshihab17@gmail.com
  • السيرة الذاتية
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    2024 Tikrit Journal for Dental Sciences
    Abstract Background: In the current study, two wt. concentrations of strontium titanate (SrTiO3) Nano powder (1% and 1.5% wt.) were added. An evaluation was conducted on some properties of heat-cured Acrylic Resin. Aim: to investigate how introducing SrTiO3 (NPs) Nanoparticles in amounts of 1% weight and 1.5% weight impacted some of the mechanical and physical properties of heat-cured denture base material and describe the results of adding (Strontium Titanate Nanoparticles) to Heat Cure Acrylic Denture Base Material. Materials and methods: An Electronic Systematic Review was conducted in different databases: (Science Direct, PubMed, Web of Science, and Google Scholar searches) were consulted on this topic, as well as on a hand search of the scientific literature. Published writings from 2015 to 2022 were obtained, examined, and relevant articles were chosen for this review. The online databases were used to perform a literature search for publications published until 2022, without any date or language restrictions. The overview highlights the most significant developments in this field, demonstrating how resin technology developed in many ways. Results: Acrylic Resins' Mechanical and Biological Qualities have been enhanced through the surface modification of poly (methyl methacrylate), the addition of Natural or Mineral Fibers, Fillers, including Nano fillers, and/or Fillers. The post-polymerizations activity decreased the quantity of leftover monomer. New Varieties of Acrylic resins were created for the processing of computer-aided design/computer-aided manufacturing systems and threedimensional printing. The findings suggest that current knowledge is to use acrylic resin in different cases of dentistry with SrTiO3 NPs and acrylic resin. that consider the most esthetic material and more comfortable, good Strength and Resistance to Wear. Conclusions: that addition of SrTiO3 Nanoparticles into denture base acrylic material improves transverse Strength, Surface Hardness Values, and Glass Transition Temperature, with a Negligible decrease in Surface Roughness.

    2023 Journal of Chemical Health Risks
    ABSTRACT: Consider a new revolution in dental prostheses termed Nano dentistry as a result of the phenomenal expansion of nanotechnology. With the addition of certain nano components, chemical polymeric structures have been modified in order to improve mechanical quality. Different concentrations of strontium titanate (0.5, 1, 1.5, and 2 weight percent) were added to heat-cured acrylic resin to assess its thermal conductivity and tensile strength. 100 samples of acrylic resin that has been heat-cured. The specimens were divided into two groups of fifty each using the tensile strength and thermo conductivity tests. ten samples of heat-sensitive acrylic resin (control group) without any additions, and ten samples of heat-sensitive acrylic resin with nano additions (SrTiO3) at various concentrations (0.5%,1%,1.5%,2%), According to (ASTM D412) (American Society for Testing and Materials; 2002), we created specimens measuring 33 mm in length, 3 mm in width, and 6 mm in depth to measure tensile strength, and specimens measuring 40 mm in diameter, 2.5 mm thick, and 6 mm in depth to assess thermal conductivity (Hasan and Ali, 2018; Kamil and Al-Judy, 2018). The statistical analysis of the data was performed using one-way ANOVA and LSD tests. Thermal conductivity tests showed statistically significant differences at all concentrations, with the exception of the range of (0.5%) to (1%), where there was no variation. Conclusion: After strontium titanate (SrTiO3) was added to the denture base material, improvements in concentration-dependent thermal conductivity and tensile strength were observed Material and methods: Heat-curing acrylic denture base material effect on tensile strength and thermal conductivity . In this study, 100 specimens were divided into 2 foremost groups (tensile strength and thermal conductivity ), fifty for each test. 10 only were made according to the percentages of SrTiO3 powder used. Auto CAD 2018 was used to design the specimen form and dimension in order to create plastic patterns for acrylic specimen molds that would meet the test requirements.




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