School of Dentistry

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Tabriz Faculty of Dentistry is located in Tabriz, capital city of East Azarbayjan Province and is the only dental schoolwestern Iran. Tabriz Dental School was founded in 1986. The first students entered in 1987, graduating in 1993. In 1997 the school moved into a new and modern building, covering 22,000 square meters. The school expanded its educational programs in 2001 by offering its postgraduate specialty courses in three fields and at present it offers seven postgraduate specialty courses. Prospects for the Future We are determined, by asking for assistance from the Almighty, to promote the school's academic excellence, raise the standards of oral health in the community and join the circle of highly qualified dental schools in the country through optimizing instruction standards and innovative research programs. Mission Tabriz Faculty of Dentistry as the only dental school in the north-western Iran and as a part of a major university has combined and enjoyed the endeavors of competent and qualified academic staff with appropriate facilities and has committed itself to: Training highly qualified general practitioners and specialists; Updating the knowledge and skill of the graduates working in the north-western Iran;

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  • Item type: Item ,
    Preparation and evaluation of physicochemical properties of the gelatin sponge scaffold containing hydroxyapatite nanoparticles and its effect on the induction of the odontogenic activity of dental pulp stem cells
    (Tabriz university of medical sciences, faculty of dentistry, 2022) Dehghani, Fatemeh; Maleki, Solmaz; Sharifi, Simin; Endodontics; Shahi, Shahriar
    Introduction: Regenerative endodontics, as a tissue engineering approach, has emerged recently as one of the new techniques in root canal therapy that has gained a lot of attraction. In this method stem cells which have the ability to differentiate, are used to restore lost and necrotic tissues. One of the most important factors in tissue engineering is the scaffold. The scaffold should be capable of providing sufficient support to promote cell proliferation and preserve differentiation. Therefore, scaffold composition and performance for biological applications must be considered in tissue engineering. The purpose of this study was to prepare a gelatin sponge scaffold containing hydroxyapatite nanoparticles and investigate its physicochemical properties, as well as investigate the scaffold's toxicity and its stimulating effect on the mineralization of dental pulp stem cells by assessing the activity of alkaline phosphatase enzymes, in regenerative endodontics. Materials and methods: Gelatin sponge scaffold containing hydroxyapatite nanoparticles was prepared by freeze drying method. Physicochemical properties were evaluated using conventional techniques such as scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) analysis, and dynamic light scattering (DLS). Biological investigation for cell survival and differentiation of dental pulp stem cells (DPSCs) was evaluated by MTT method and alkaline phosphatase (ALP) activity techniques, respectively. For the statistical analysis of the data, one-way ANOVA and t-test were performed by SPSS version 17 software, and the significance level was considered to be p≤0.05. Results: Gelatin scaffolds containing hydroxyapatite nanoparticles had porous sponge morphologies with micrometer and nanometer pores, where all functional groups of gelatin and hydroxyapatite were present in the sponge. The average particle size of HA nanoparticles was 75 nm. Also, the XRD results showed that the sponge had a crystalline structure. In biological studies, the viability of cells grown on the scaffold did not differ from the control group on days 2, 4 and 6. Furthermore, after 14 days of cell culture on the scaffold, ALP activity increased significantly (p<0.05). Conclusion: Gelatin sponge scaffolds containing hydroxyapatite nanoparticles demonstrated favorable effects in stimulating the mineralization of dental pulp stem cells, suggesting their potential for application in root regeneration.
  • Item type: Item ,
    Effect of nano-particle calcium hydroxide dressing on the push-out bond strenght of fiber post
    (Tabriz University of Medical Sciences, School of dentistry, 2019) Dehghani, Fatemeh; froug reyhani, mohammad; ghasemi, negin; yavari, hamidreza
    Introduction: Radicular posts are used for restoration and repair of endodontic teeth to achieve adequate retention of the final restoration. Fiber posts are aesthetic and they can form a single set with the root surroundings. Any change in dentin structure due to the use of washers, in-channel medications or sealers during root treatment can affect the bond strength of the dentin materials. So far, no study has been performed to demonstrate the effect of using nanoparticle calcium hydroxide on the post bond strength of post-cemented fiber to root dentin. Materials and Methods: 54 single root premolar teeth after CEJ excision and root implantation were randomly divided into two experimental groups and a control group (calcium hydroxide and nano calcium hydroxide) according to the type of dressing used inside the canal. Each group consisted of 18 teeth. After rinsing the drugs inside the roots, the specimens of all three groups were filled with gutta-percha and sealer. The post space was embedded to a depth of 9 mm. After inserting the resin cement into the root canal, the fibers were punctured in depth and the resin cement was polymerized by LED light cure. Transverse sections of all teeth were prepared as 1 mm thick discs for push out test. Data were analyzed using one-way ANOVA and Kruskal-Wallis tests in non-normal data using SPSS 17 software. The significance level of the study was P <0.05. Results: A significant difference was found between calcium hydroxide and control group (P = 0.02) no significant difference between nano-calcium hydroxide and control and calcium hydroxide groups. Also only the B level was significantly different among three groups. However, using calcium hydroxide had a significant difference in bond strength compared to the other groups (P = 0.008). In all three groups of nano-calcium hydroxide, calcium hydroxide and control, the push-out bond strength from coronal to apical was reduced. Conclusion: The use of calcium hydroxide significantly increased the fiber strength of push-out band while there was no significant difference between control and nano calcium hydroxide groups. Due to limitation of this study Nano calcium hydroxide can’t increase the Push-out bond strength of filer post.