Aim: Alveolar bone resorption, often occurring after tooth extraction, can be minimized through socket preservation. This process uses a combination of Moringa leaf extract and demineralized freeze-dried bovine bone xenograft (DFDBBX) that is expected to generate both transforming growth factor-beta 1 (TGF-β1) expressions as a transcription factor associated with osteoblast differentiation and osteocalcin accelerating alveolar bone formation. This research aimed to analyze the role of the combination of Moringa leaf extract and DFDBBX induced in socket preservation when generating TGF-β1 and osteocalcin expressions. Materials and Methods: The left mandibular incisors of 56 Cavia cobaya were extracted and divided into four groups subjected to different socket preservation treatments. The first group treated with polyethylene glycol, the second group with DFDBBX, the third group with Moringa leaf extract, and the fourth group with a combination of DFDBBX and Moringa leaf extract. The C. cobaya were examined on days 7 and 30, after which the specimens were sacrificed and examined using an immunohistochemical technique. The resulting data were then analyzed using one-way ANOVA and Tukey's honestly significant difference tests. Results: There was a significant difference in TGF-β1 and osteocalcin expressions between the groups ( P < 0.05). The highest mean amount of TGF-β1 and osteocalcin was found in the fourth group on both days 7 and 30. Conclusions: The combination of Moringa leaf extract and DFDBBX can effectively generate TGF-β1 and osteocalcin expressions during the preservation of tooth extraction sockets.

The human umbilical cord is a source of numerous Mesenchymal Stem Cells (MSCs), making it as a potential source of allogeneic multipotent cell for bone tissue engineering. The aims of this study were to find: 1) Human Umbilical Cord Mesenchymal Stem Cells (hUCMSCs) phenotypic characterization, 2) The in-vitro osteogenic differentiation potential of hUCMSCs, 3) The cytotoxicity of gelatin solvent to hUCMSCs using 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide (MTT) assay. As a result, through characterization of hUCMSCs, the majority of target cells expressed specific MSCs markers, Cellular Differentiation (CD)73, smaller number of subpopulation expressed CD90 with only minimal subpopulation expressed CD105 and all negative MSCs markers. Osteoblastic differentiation was found in a significantly high number of cells when in vitro osteogenic differentiation of hUCMSCs with Alizarin Red staining was done. Biocompatibility analysis using the MTT assay showed that gelatin solvent and Alpha modification of minimum essential * Corresponding author.N. Hendrijantini et al. 421medium Eagle (α-MEM) was non-toxic for hUCMSCs in vitro. The study concluded that hUCMSCs isolated from human umbilical cord was capable of undergoing in vitro osteogenesis, indicating its potential as allogeneic stem cells for clinical application in bone tissue engineering.

Aim: To determine the potential of propolis extract and BBG combination on the quantity of fibroblast growth factor 2 (FGF-2), vascular endothelial growth factor (VEGF), and osteoblasts in the preservation of tooth extraction socket on days 3 and 7. Settings and Design: Laboratory in vivo reseach using animal model. Materials and Methods: Fifty-six Cavia cobaya were divided into eight groups containing seven animals in each group. The extraction socket on the lower left incisor was filled with polyethylene glycol (PEG) at a concentration of 2% (Groups I and II) as a control; active materials consisted of propolis extract and PEG (Groups III and IV); active materials consisted of BBG and PEG (Groups V and VI); and active materials consisted of propolis extract, BBG, and PEG (Groups VII and VIII). Then, an examination was done using immunohistochemistry to perform an expression of VEGF, FGF2, as well as histology of osteoblasts. Statistical Analysis Used: The statistical analysis performed using a one-way ANOVA and Tukey's honestly significant difference test. Results: Propolis extract, BBG and PEG had the most significant result related to the formation of FGF2, VEGF, and osteoblasts. Conclusion: The combination of propolis extract with BBG and PEG in socket preservation is effective in increasing the expression of FGF2, VEGF, and osteoblasts.

Background: Tooth extraction is a procedure frequently performed in the field of dentistry that can cause alveolar bone resorption during the healing process. Therefore, preservation of sockets is necessary to maintain alveolar bone which represents one of the important factors in the successful manufacture of dentures. A combination of propolis extract and bovine bone graft (BBG) can accelerate bone regeneration. Purpose: The purpose of this study was to determine the effects of a combination of propolis extract and BBG on the quantity of fibroblasts, osteoblasts, and osteoclasts in the tooth extraction socket. Methods: 56 Cavia cobaya were divided into eight groups. The lower left incisor of each subject was extracted and induced with polyethylene glycol (PEG), propolis extract + PEG, BBG + PEG, combination of propolis extract + BBG + PEG at a concentration of 2% active substance. Experimental subjects were sacrificed on days 3 and 7. Histopathological examination with a microscope at 400x magnification was conducted to calculate the quantity of fibroblasts, osteoblasts, and osteoclasts. Statistical analysis was performed by one-way ANOVA and Tukey HSD tests. Results: The highest average quantity of fibroblasts and osteoblasts and the lowest average quantity of osteoclasts occurred in the group to which a combination of propolis extract and BBG had been administered on both days 3 and 7. According to the statistical analysis results, all the treatment groups recorded a significant difference in the quantity of fibroblasts, osteoblasts, and osteoclasts with a p value: 0.000 (p<0.05). Conclusion: A combination of propolis extract and BBG can increase the quantity of fibroblast and osteoblast cells, while reducing the number of osteoclast cells in tooth extraction sockets treated with 2% concentration of the active substance.

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