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Year : 2019  |  Volume : 14  |  Issue : 2  |  Page : 82-94

The odontogenic performance of human dental pulp stem cell in 3-dimensional chitosan and nano-bioactive glass-based scaffold material with different pores size

1 Oral Pathology, Basic Dental Science Department, Oral and Dental Research Division, Giza, Egypt
2 Refractories, Ceramics and Building Materials Department, National Research Center, Giza, Egypt

Correspondence Address:
Reham A.A. Morsy
PhD in oral pathology, Faculty of Oral and Dental Medicine, Cairo University, Basic Dental Science Department, Oral and Dental Research Division, National Research Centre, 33 El Bohouth Street, 12622 Dokki, Cairo
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jasmr.jasmr_18_19

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Background This study focused on the development of biocompatible and biodegradable homoporous chitosan scaffolds containing nano-bioactive glass 58S for dental tissue regeneration. For this aim, we developed a new chemical route to obtain homoporous scaffolds that mimic cancellous bone by utilizing H2O2. Materials and methods Different properties of the prepared powder of 58S were analyzed by transmission electron microscopy, thermogravimetric analysis (TGA)/differential scanning colometric (DSC), X-ray diffraction, and Fourier transform infrared spectroscopy. The developed scaffolds were analyzed by X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscope in comparison with heteroporous scaffolds prepared in the absence of H2O2. Stem cells from dental pulp were seeded onto the prepared scaffolds for different periods of time. The ability to differentiate toward an odontogenic lineage was studied for the loaded cells with the prepared scaffolds. Results The size of the prepared nano-bioglass 58S nanoparticles was in the range of 23.9–98.18 nm. The scaffolds prepared using H2O2 exhibited homogenous porous scaffolds in the range of 250–450 μm size when compared with scaffold synthesized in the absence of H2O2, which demonstrated heterogeneous scaffolds in the range of 350–700 μm. The cell studies showed better cell growth and biomineralization with the heterogeneous scaffolds compared with homogenous microarchitecture. Conclusion The microarchitecture of heterogeneous scaffolds plays a significant role in dental pulp stem cell differentiation and calcified tissue development as well as provides new possibilities for dental tissue engineering.

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