scholarly journals Nanotechnology Scaffolds for Alveolar Bone Regeneration

Materials ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 201 ◽  
Author(s):  
Goker Funda ◽  
Silvio Taschieri ◽  
Giannì Aldo Bruno ◽  
Emma Grecchi ◽  
Savadori Paolo ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Bone Regeneration ◽  
Alveolar Bone ◽  
Publication Date ◽  
Reference List ◽  
Tissue Formation ◽  
Key Factors ◽  
Nanofibrous Scaffolds ◽  
Key Events

In oral biology, tissue engineering aims at regenerating functional tissues through a series of key events that occur during alveolar/periodontal tissue formation and growth, by means of scaffolds that deliver signaling molecules and cells. Due to their excellent physicochemical properties and biomimetic features, nanomaterials are attractive alternatives offering many advantages for stimulating cell growth and promoting tissue regeneration through tissue engineering. The main aim of this article was to review the currently available literature to provide an overview of the different nano-scale scaffolds as key factors of tissue engineering for alveolar bone regeneration procedures. In this narrative review, PubMed, Medline, Scopus and Cochrane electronic databases were searched using key words like “tissue engineering”, “regenerative medicine”, “alveolar bone defects”, “alveolar bone regeneration”, “nanomaterials”, “scaffolds”, “nanospheres” and “nanofibrous scaffolds”. No limitation regarding language, publication date and study design was set. Hand-searching of the reference list of identified articles was also undertaken. The aim of this article was to give a brief introduction to review the role of different nanoscaffolds for bone regeneration and the main focus was set to underline their role for alveolar bone regeneration procedures.

scholarly journals Delivery Systems and Role of Growth Factors for Alveolar Bone Regeneration in Dentistry

10.5772/55580 ◽  
2013 ◽  
Author(s):  
Stefano Sivolella ◽  
Marleen De ◽  
Giulia Brunello ◽  
Sara Ricci ◽  
Drazen Tadic ◽  
...  
Keyword(s):  
Growth Factors ◽  
Bone Regeneration ◽  
Alveolar Bone ◽  
Delivery Systems

Micro-Computed Tomography Analysis on Administration of Mesenchymal Stem Cells - Bovine Teeth Scaffold Composites for Alveolar Bone Tissue Engineering

2021 ◽  
Vol 52 ◽  
pp. 86-96
Author(s):  
Desi Sandra Sari ◽  
Fourier Dzar Eljabbar Latief ◽  
Ferdiansyah ◽  
Ketut Sudiana ◽  
Fedik Abdul Rantam
Keyword(s):  
Computed Tomography ◽  
Tissue Engineering ◽  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Bone Regeneration ◽  
Bone Growth ◽  
Alveolar Bone ◽  
Micro Computed Tomography ◽  
Freeze Dried ◽  
Significant Difference

The tissue engineering approach for periodontal tissue regeneration using a combination of stem cells and scaffold has been vastly developed. Mesenchymal Stem Cells (MSCs) seeded with Bovine Teeth Scaffold (BTSc) can repair alveolar bone damage in periodontitis cases. The alveolar bone regeneration process was analyzed by micro-computed tomography (µ-CT) to observe the structure of bone growth and to visualize the scaffold in 3-Dimensional (3D). The purpose of this study is to analyze alveolar bone regeneration by µ-CT following the combination of MSCs and bovine teeth scaffold (MSCs-BTSc) implantation in the Wistar rat periodontitis model. Methods. MSCs were cultured from adipose-derived mesenchymal stem cells of rats. BTSc was taken from bovine teeth and freeze-dried with a particle size of 150-355 µm. MSCs were seeded on BTSc for 24 hours and transplanted in a rat model of periodontitis. Thirty-five Wistar rats were made as periodontitis models with LPS induction from P. gingivalis injected to the buccal section of interproximal gingiva between the first and the second mandibular right-molar teeth for six weeks. There were seven groups (control group, BTSc group on day 7, BTSc group on day 14, BTSc group on day 28, MSCs-BTSc group on day 7, MSCs-BTSc group on day 14, MSCs-BTSc group on day 28). The mandibular alveolar bone was analyzed and visualized in 3D with µ-CT to observe any new bone growth. Statistical Analysis. Group data were subjected to the Kruskal Wallis test followed by the Mann-Whitney (p <0.05). The µ-CT qualitative analysis shows a fibrous structure, which indicates the existence of new bone regeneration. Quantitative analysis of the periodontitis model showed a significant difference between the control model and the model with the alveolar bone resorption (p <0.05). The bone volume and density measurements revealed that the MSCs-BTSc group on day 28 formed new bone compared to other groups (p <0.05). Administration of MSCs-BTSc combination has the potential to form new alveolar bone.

scholarly journals The Adipose-Derived Stem Cell and Endothelial Cell Coculture System—Role of Growth Factors?

Cells ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 2074
Author(s):  
Dominik Steiner ◽  
Hilkea Mutschall ◽  
Sophie Winkler ◽  
Raymund E. Horch ◽  
Andreas Arkudas
Keyword(s):  
Tissue Engineering ◽  
Osteogenic Differentiation ◽  
Bone Tissue ◽  
Tissue Formation ◽  
Engineering Applications ◽  
Coculture System ◽  
Scaffold Materials ◽  
Adipose Derived Stem Cell ◽  
Bone Tissue Formation

Adequate vascularization is a fundamental prerequisite for bone regeneration, formation and tissue engineering applications. Endothelialization of scaffold materials is a promising strategy to support neovascularization and bone tissue formation. Besides oxygen and nutrition supply, the endothelial network plays an important role concerning osteogenic differentiation of osteoprogenitor cells and consecutive bone formation. In this study we aimed to enhance the growth stimulating, proangiogenic and osteogenic features of the ADSC and HUVEC coculture system by means of VEGFA165 and BMP2 application. We were able to show that sprouting phenomena and osteogenic differentiation were enhanced in the ADSC/HUVEC coculture. Furthermore, apoptosis was unidirectionally decreased in HUVECs, but these effects were not further enhanced upon VEGFA165 or BMP2 application. In summary, the ADSC/HUVEC coculture system per se is a powerful tool for bone tissue engineering applications.

scholarly journals The Role of Epigenetic Functionalization of Implants and Biomaterials in Osseointegration and Bone Regeneration—A Review

Molecules ◽  
2020 ◽  
Vol 25 (24) ◽  
pp. 5879
Author(s):  
Farah Asa’ad ◽  
Goda Pelanyte ◽  
Jincy Philip ◽  
Christer Dahlin ◽  
Lena Larsson
Keyword(s):  
Bone Regeneration ◽  
Alveolar Bone ◽  
Inflammatory Diseases ◽  
Standards Of Care ◽  
Epigenetic Mechanisms ◽  
Implant Surface ◽  
The Past ◽  
Need To Evaluate ◽  
Specific Search

The contribution of epigenetic mechanisms as a potential treatment model has been observed in cancer and autoimmune/inflammatory diseases. This review aims to put forward the epigenetic mechanisms as a promising strategy in implant surface functionalization and modification of biomaterials, to promote better osseointegration and bone regeneration, and could be applicable for alveolar bone regeneration and osseointegration in the future. Materials and Methods: Electronic and manual searches of the literature in PubMed, MEDLINE, and EMBASE were conducted, using a specific search strategy limited to publications in the last 5 years to identify preclinical studies in order to address the following focused questions: (i) Which, if any, are the epigenetic mechanisms used to functionalize implant surfaces to achieve better osseointegration? (ii) Which, if any, are the epigenetic mechanisms used to functionalize biomaterials to achieve better bone regeneration? Results: Findings from several studies have emphasized the role of miRNAs in functionalizing implants surfaces and biomaterials to promote osseointegration and bone regeneration, respectively. However, there are scarce data on the role of DNA methylation and histone modifications for these specific applications, despite being commonly applied in cancer research. Conclusions: Studies over the past few years have demonstrated that biomaterials are immunomodulatory rather than inert materials. In this context, epigenetics can act as next generation of advanced treatment tools for future regenerative techniques. Yet, there is a need to evaluate the efficacy/cost effectiveness of these techniques in comparison to current standards of care.

scholarly journals Tooth-Supporting Hard Tissue Regeneration Using Biopolymeric Material Fabrication Strategies

Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4802
Author(s):  
Min Guk Kim ◽  
Chan Ho Park
Keyword(s):  
Tissue Engineering ◽  
Tissue Regeneration ◽  
Alveolar Bone ◽  
Critical Role ◽  
Periodontal Regeneration ◽  
Tissue Formation ◽  
Hard Tissue ◽  
Periodontal Tissues ◽  
Mineralized Tissues ◽  
Biomechanical Forces

The mineralized tissues (alveolar bone and cementum) are the major components of periodontal tissues and play a critical role to anchor periodontal ligament (PDL) to tooth-root surfaces. The integrated multiple tissues could generate biological or physiological responses to transmitted biomechanical forces by mastication or occlusion. However, due to periodontitis or traumatic injuries, affect destruction or progressive damage of periodontal hard tissues including PDL could be affected and consequently lead to tooth loss. Conventional tissue engineering approaches have been developed to regenerate or repair periodontium but, engineered periodontal tissue formation is still challenging because there are still limitations to control spatial compartmentalization for individual tissues and provide optimal 3D constructs for tooth-supporting tissue regeneration and maturation. Here, we present the recently developed strategies to induce osteogenesis and cementogenesis by the fabrication of 3D architectures or the chemical modifications of biopolymeric materials. These techniques in tooth-supporting hard tissue engineering are highly promising to promote the periodontal regeneration and advance the interfacial tissue formation for tissue integrations of PDL fibrous connective tissue bundles (alveolar bone-to-PDL or PDL-to-cementum) for functioning restorations of the periodontal complex.

scholarly journals The Receptor AT1 Appears to Be Important for the Maintenance of Bone Mass and AT2 Receptor Function in Periodontal Bone Loss Appears to Be Regulated by AT1 Receptor

2021 ◽  
Vol 22 (23) ◽  
pp. 12849
Author(s):  
Maria Laura de Souza Lima ◽  
Agnes Andrade Martins ◽  
Caroline Addison Carvalho Xavier de Medeiros ◽  
Gerlane Coelho Bernardo Guerra ◽  
Robson Santos ◽  
...  
Keyword(s):  
Bone Loss ◽  
Bone Mass ◽  
Alveolar Bone ◽  
Experimental Studies ◽  
At1 Receptor ◽  
At2 Receptor ◽  
Ang Ii ◽  
Key Events

A large number of experimental studies has demonstrated that angiotensin II (Ang II) is involved in key events of the inflammatory process. This study aimed to evaluate the role of Ang II type 1 (AT1) and Ang II type 2 (AT2) receptors on periodontitis. Methods: Experimental periodontitis was induced by placing a 5.0 nylon thread ligature around the second upper left molar of AT1 mice, no-ligature or ligature (AT1-NL and AT1-L), AT2 (AT2-NL or AT2-L) and wild type (WT-NL or L). Alveolar bone loss was scanned using Micro-CT. Cytokines, peptides and enzymes were analyzed from gingival tissues by Elisa and RT-PCR. Results: The blockade of AT1 receptor resulted in bone loss, even in healthy animals. Ang II receptor blockades did not prevent linear bone loss. Ang II and Ang 1-7 levels were significantly increased in the AT2-L (p < 0.01) group compared to AT2-NL and AT1-L. The genic expression of the Mas receptor was significantly increased in WT-L and AT2-L compared to (WT-NL and AT2-NL, respectively) and in AT1-L. Conclusions: Our data suggest that the receptor AT1 appears to be important for the maintenance of bone mass. AT2 receptor molecular function in periodontitis appears to be regulated by AT1.

scholarly journals Sustained zinc release in cooperation with CaP scaffold promoted bone regeneration via directing stem cell fate and triggering a pro-healing immune stimuli

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Xin Huang ◽  
Donghua Huang ◽  
Ting Zhu ◽  
Xiaohua Yu ◽  
Kaicheng Xu ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Metal Ions ◽  
Bone Tissue Engineering ◽  
Bone Regeneration ◽  
Osteogenic Differentiation ◽  
Bone Tissue ◽  
Cell Fate ◽  
Metal Ion ◽  
Healing Process

AbstractMetal ions have been identified as important bone metabolism regulators and widely used in the field of bone tissue engineering, however their exact role during bone regeneration remains unclear. Herein, the aim of study was to comprehensively explore the interactions between osteoinductive and osteo-immunomodulatory properties of these metal ions. In particular, the osteoinductive role of zinc ions (Zn2+), as well as its interactions with local immune microenvironment during bone healing process, was investigated in this study using a sustained Zn2+ delivery system incorporating Zn2+ into β-tricalcium phosphate/poly(L-lactic acid) (TCP/PLLA) scaffolds. The presence of Zn2+ largely enhanced osteogenic differentiation of periosteum-derived progenitor cells (PDPCs), which was coincident with increased transition from M1 to M2 macrophages (M$$\varphi $$ φ s). We further confirmed that induction of M2 polarization by Zn2+ was realized via PI3K/Akt/mTOR pathway, whereas marker molecules on this pathway were strictly regulated by the addition of Zn2+. Synergically, this favorable immunomodulatory effect of Zn2+ further improved the osteogenic differentiation of PDPCs induced by Zn2+ in vitro. Consistently, the spontaneous osteogenesis and pro-healing osteoimmunomodulation of the scaffolds were thoroughly identified in vivo using a rat air pouch model and a calvarial critical-size defect model. Taken together, Zn2+-releasing bioactive ceramics could be ideal scaffolds in bone tissue engineering due to their reciprocal interactions between osteoinductive and immunomodulatory characteristics. Clarification of this synergic role of Zn2+ during osteogenesis could pave the way to develop more sophisticated metal-ion based orthopedic therapeutic strategies.

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