Aloe vera has been investigated potential use in tissue engineering. Its bioactive compounds interact with growth factor receptor on the fibroblast and stimulate cells proliferation.   The aim of this study was to investigate the proliferation of fibroblast cells on wound healing process of Cavia cobaya dental extraction using scaffold combination chitosan and Aloe vera.  Cavia cobaya male with 300-350 grams of weight and in the age of 3 to 3.5 months. It divided into ten groups (n=5). For Treatment groups, Aloe vera scaffold(Av); Chitosan Scaffold (Ch); Scaffold combination chitosan-Aloe vera (Ch-Av) and scaffold combination chitosan- Aloe vera- hidroksiapatit(Ch-Av-HA) were applied into the socket of dental extraction.  For control group, which were not given scaffold. Cavia cobaya were decaputated at 7 and 14 days  and the jaw in the treated regions and control group were cut for Histopatology Anatomy examination to investigate the proliferation of fibroblast cells. Data were analyzed using One way Anova test. The proliferation of fibroblast cells were found higher in the group which given Av-Ch and Av-Ch-HA scaffold. The result  showed  significant differences in proliferation of fibroblast cells for 7 and 14 days observation  compared to control group (p<0,05). The application of  scaffold combination Chitosan and Aloe vera accelerate the wound healing process of Cavia cobaya dental extraction.

Background: Bone morphogenetic protein-2 (BMP-2) is bone stimulator which capable of inducing differentiation of mesenchymal cells into osteoblast, stimulating bone formation in wound healing process of dental extraction. Chitosan is polymer composed N-acetyl-D-glucosamine unit that has been used in various applications

Objective This study aimed to analyze interaction between glycosaminoglycan-acemannan as a scaffold material and toll-like receptor-2 (TLR-2) receptor, which predicted the osteogenesis potency on alveolar bone healing (in silico analysis). Materials and Methods Docking interaction between glycosaminoglycan-acemannan and TLR-2 receptor using the Molegro Virtual Docker (MVD) program. The compounds of glycosaminoglycan-acemannan and TLR-2 receptor with the structure in the form of two- and three-dimensional images were analyzed, as well as the most stable structure. It was observed the interaction of the ligand on the cavity of the TLR-2 receptor structure. The energy required for the ligand and receptor interaction (Moldock score) was calculated with MPD program. Results The chemical structure shows that glycosaminoglycan-acemannan is capable binding to the TLR-2 receptor with hydrogen bonds and strong steric interaction. The docking results were detected for five cavities where the compound binds to the TLR-2 receptor. The Moldock score of the ligand on the CAS-LYS-LEU-ARG-LYS-ILE-MSE[A] ligand was −95,58 Kcal/mol, that of acemannan was −91,96 Kcal/mol, and for glycosaminoglycan −61,14 Kcal/mol. Conclusion The compound of glycosaminoglycan-acemannan as a scaffold material is able to bind with a TLR-2 target receptor, which predicted osteogenesis activity on alveolar bone healing supported by in silico analysis.

<p><strong><em>Background:</em></strong><em> Traumatic ulcer is one of the most common oral wounds. Chitosan has mucoadhesive characteristic while Aloe vera containing lignin which is able to penetrate the skin. It is expected that the combined gel of chitosan and Aloe vera will function as wound healing accelerator in traumatic ulcer. Molecular weight is one of the characteristics of chitosan quality. <strong>Purpose:</strong> the aim of this experiment was to know the density of collagen fibers in wound healing of traumatic ulcer using the combined gel of chitosan with different molecular weight and Aloe vera. <strong>Materials and method: </strong>30 Male Rattus Norvegicus were divided into 3 groups. Group I was control group (without chitosan and Aloe vera), group II was given low molecular weight chitosan and Aloe vera, group III was given high molecular weight chitosan and Aloe vera. The groups were given traumatic ulcer making with 4 mm diameter and 2 mm depth. Rats were sacrificed by decapitation on day 3 and 7 then they were examined histopatologically to see the density of collagen fibers. <strong>Result:</strong> Statistical analysis with Kruskall Wallis and Mann-Whitney U test showed that there were significant difference p&lt;0,05 between high and low molecular weight chitosan with Aloe vera group on day 3 and 7. <strong>Conclusion:</strong> Chitosan with high molecular weight and Aloe vera were more effective in wound healing of traumatic ulcer b</em><em>ecause they increase</em><em> the density of collagen fibers.</em><em></em></p><p><strong><em> </em></strong></p><p><strong><em>Keywords:</em></strong><em>  Combined gel of chitosan and Aloe vera, density of collagen fibers, wound healing.</em><em></em></p><p><strong><em> </em></strong></p><strong><em>Korespondensi:</em></strong><em> Sularsih, Bagian Ilmu Biomaterial Kedokteran Gigi, Fakultas Kedokteran Gigi, Universitas Hang Tuah, Arif Rahman Hakim 150, Telepon 031-5912191.</em>

<strong><em>Background: </em></strong><em>Scaffold can be use in bone regeneration, but it should have similarities characteristic to a natural bone such as compressive strength that supported the process of growth and development of bone. This research use scaffold that made from chitosan and Aloe vera. Chitosan well-known as <em>osteoconductive</em> material, meanwhile Aloe vera was osteoinductive material. <strong>Purpose: </strong>The aim of this research was to compare compressive strength scaffold combinations of chitosan and Aloe vera extracted water and ethanol. <strong>Methods:</strong> Research design using post test only control group design with 36 scaffolds divided into 6 groups. Group 1 was scaffold Aloe vera extracted water (AVa), group 2 was scaffold Aloe vera extracted ethanol (AVe), group 3 was scaffold combination chitosan and Aloe vera extracted water 1: 1 (k-AVa1), group 4 was the scaffold combination of chitosan and Aloe vera extracted ethanol 1: 1 (k-AVe1), group 5 was scaffold combination of chitosan and Aloe vera extracted water 1: 2 (k-AVa2), and group 6 was scaffold combination of chitosan and Aloe vera ethanol extract 1: 2 (k -AVe2). Compressive strength test used Universal Testing Machine (Shimadzu Autograph–AGS–1kNX and using software Trapezium X). Data were analyzed using One Way ANOVA and Games Howell test. <strong>Results: </strong>The result of compressive strength AVa=1.36 MPa, AVe=1.03 MPa, k-AVa1=0.27 MPa, k-AVe1=0.11 MPa, k-AVa2=0.38 MPa, and k-AVe2=0.29<strong> </strong>MPa<strong>. </strong>All groups have significant differences except AVa &amp; AVe and k-AVa1 &amp; K-AVe2 (p&gt;0,05). <strong>Conclusion: </strong>There was difference between compressive strength scaffold combinations of chitosan and Aloe vera extracted water and ethanol, and the most highest compressive strength is AVa.</em>

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