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This review discusses and summarizes the recent developments and advances in the use of biodegradable materials for bone repair purposes. The choice between using degradable and non-degradable devices for orthopedic and maxillofacial applications must be carefully weighed. Traditional biodegradable devices for osteosynthesis have been successful in...
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Bacterial cellulose (BC) is an excellent biomaterial with many medical applications. In this study, resorbable BC membranes were prepared for guided bone regeneration (GBR) using an irradiation technique for applications in the dental field. Electron beam irradiation (EI) increases biodegradation by severing the glucose bonds of BC. BC membranes ir...
Calcium phosphate-based biomaterials are of special interest in bone regeneration due to their biocompatibility and biodegradability; on the other hand, chitosan has novel properties such as antibacterial properties, biocompatibility, and biodegradability. In the present study, a new calcium phosphate (CaP)/chitosan (Chi) nanocomposite biomaterial...
Citations
... The disadvantages of permanent implants relate to their possible detrimental effect on the immune system, premature mechanical failure due to stress corrosion, and stress shielding in orthopedic applications that required secondary surgery. In contrast, biodegradable implants can degrade and be absorbed post implantation while maintaining their mechanical integrity during the critical period before complete healing is achieved [3][4][5][6]. In many cases, the use of a temporary biodegradable implant is sufficient as there is no need for the presence of the implant after the recovery of the tissue [6][7][8][9][10][11]. ...
The present study aims to evaluate the effect of up to 3 wt.% Nd on pure Zn in terms of physical properties and in vitro analysis. The use of Nd as an alloying element is due to its relatively adequate biocompatibility and its potential capability to reinforce metals with a hexagonal close-packed (HCP) crystal structure, such as Mg and Zn. The microstructural assessment was executed using X-ray diffraction analysis, along with optical and scanning electron microscopy. The mechanical properties were evaluated by hardness and tensile strength testing. The corrosion performance in simulated physiological environments was examined by means of immersion tests, potentiodynamic polarization, and impedance spectroscopy using phosphate-buffered saline (PBS) solution. Cytotoxicity assessment was carried out by indirect cell viability analysis according to the ISO 10993-5/12 standard using Mus musculus 4T1 cells, which are known to be very sensitive to toxic environments. The obtained results clearly highlighted the reinforcing effect of Nd in Zn-base alloys, mainly due to the formation of a secondary phase: NdZn5. This strengthening effect was acquired without impairing the inherent ductility and corrosion performance of the tested alloys. The cytotoxicity assessment indicated that the addition of Nd has a strong favorable effect on cell viability, which stimulates the inherent anti-inflammatory characteristics of Zn.
... In this randomized controlled trial assessing FGG viability and alveolar ridge alterations after socket seal surgery with and without bone graft filling material, the findings indicated that the viability of FGG was (Fig. 11). [25]. FDBA healing involved creeping substitution with osteoclastic function and bone graft resorption [26]. ...
Purpose
This study aimed to investigate the viability of free gingival grafts (FGG) and assess clinical and radiographic changes in the alveolar ridge following socket seal surgery with or without freeze-dried bone allograft (FDBA).
Materials and methods
Twenty-eight anterior and premolar tooth extractions were randomly allocated to 2 groups: socket graft of FDBA sealed with FGG (n = 15) and control with empty sockets sealed solely with FGG (n = 13). Photographs taken at 3, 7, 14, and 30 days post-surgery assessed FGG viability. Alveolar ridge volume was clinically evaluated via intraoral scanners before surgery and at 1 and 3 months post-surgery. CBCT scans taken immediately post-surgery and 3 months later assessed alveolar ridge dimensions.
Results
FGG viability in both groups increased from day 3 and reached the maximum score on day 14. Alveolar ridge volume reduction at 3 months in the FDBA group was comparable to the control group. Buccal alveolar bone height reduction was significantly higher in the FDBA group than the control group, while palatal alveolar bone height was comparable. Alveolar bone width reduction was evident but not statistically significant between the groups. The FDBA group exhibited a significant alteration in bone volume compared to the control group.
Conclusion
Viability of FGG was not affected by graft filling materials. Sealing the socket with FGG effectively preserved socket integrity and ridge volume in minor socket defects using either graft filling material or not. This study was registered on 4 January 2021 on Thai Clinical Trials Registry (TCTR20210104001).
... Most likely, in terms of the Ca/P ratio, the resulting coatings belong to bioresorbable phases. Calcium phosphates with a lower Ca/P ratio compared to HA (Ca/P = 1.67) should be considered as resorbable phases [33]. Figure 3 shows the results of elemental EDS mapping and cross-sectional SEM images for three samples processed at three modes A-400 V, B-600 V, and C-600 V. ...
The micro-arc oxidation method has been used to obtain calcium-phosphate coatings on titanium surface, expected to have bioactive properties. The effect of the pulse current duty cycle and voltage of micro-arc oxidation on the morphology, elemental and phase composition of the coating has been studied. Decrease in the pulse duty cycle during micro-arc oxidation results in the formation of flake, spheroidal and lamellar structures. It has been shown that the Ca/P ratio and surface roughness of the coating increases regardless of the pulse duty cycle with increase of applied voltage. Depending on the application mode, the Ca/P ratio and the roughness of calcium phosphate coatings ranged from 0.44 to 0.67 and from 4.2 to 6.8 μm, respectively. It was found that change of the pulse current duty cycle and increase of the voltage up to 600 V results in the formation of the main crystalline phases Ca(H2PO4)2(H2O) and CaPO3(OH) in the coatings.
... All of these similarities make Mg a suitable candidate for orthopedic applications. Mg is the second most abundant intracellular cation and is known as an important and effective cofactor in more than 300 types of enzymatic reactions, including energy metabolism and protein and nucleic acid production [22][23][24]. Scientific evidence indicates that Mg in the body is distributed in such a way that half is found in soft tissues and half in the bones. The recommended intake of Mg is about 240 to 420 mg/day, which is about 17 to 50 times more than the intake of iron and zinc (15 mg) and about 70 times more than that of strontium and manganese (about 5 mg). ...
Magnesium (Mg) is considered an attractive option for orthopedic applications due to its density and elastic modulus close to the natural bone of the body, as well as biodegradability and good tensile strength. However, it faces serious challenges, including a high degradation rate and, as a result, a loss of mechanical properties during long periods of exposure to the biological environment. Also, among its other weaknesses, it can be mentioned that it does not deal with bacterial biofilms. It has been found that making composites by synergizing its various components can be an efficient way to improve its properties. Among metal oxide nanoparticles, magnesium oxide nanoparticles (MgO NPs) have distinct physicochemical and biological properties, including biocompatibility, biodegradability, high bioactivity, significant antibacterial properties, and good mechanical properties, which make it a good choice as a reinforcement in composites. However, the lack of comprehensive understanding of the effectiveness of Mg NPs as Mg matrix reinforcements in mechanical, corrosion, and biological fields is considered a challenge in their application. While introducing the role of MgO NPs in medical fields, this article summarizes the most important results of recent research on the mechanical, corrosion, and biological performance of Mg/MgO composites.
... In the fields of reconstructive plastic and orthopedic surgery, extensive research has been conducted to identify biocompatible methods and materials for the restoration of bone defects [1]. Despite ongoing investigations, the conventional use of autologous bone transplantation persists, albeit accompanied by challenging issues such as limited availability, shaping difficulties, and donor site morbidity [2]. ...
Biofunctionalized hydrogels are widely used in tissue engineering for bone repair. This study examines the bone regenerative effect of the blood-derived growth factor preparation of Hy-poxia Preconditioned Serum (HPS) and its fibrin-hydrogel formulation (HPS-F) on drilled defects in embryonic day 19 chick femurs. Measurements of bone-related growth factors in HPS reveal significant elevations of Osteopontin, Osteoprotegerin, and soluble-RANKL compared with normal serum (NS) but no detection of BMP-2/7 or Osteocalcin. Growth factor releases from HPS-F are measurable for at least 7 days. Culturing drilled femurs organotypically on a liquid/gas interface with HPS media supplementation for 10 days demonstrates a 34.6% increase in bone volume and a 52.02% increase in bone mineral density (BMD) within the defect area, which are significantly higher than NS and a basal-media-control, as determined by microcomputed tomography. HPS-F-injected femur defects implanted on a chorioallantoic membrane (CAM) for 7 days exhibit an increase in bone mass of 123.5% and an increase in BMD of 215.2%, which are significantly higher than normal-serum-fibrin (NS-F) and no treatment. Histology reveals calcification, proteoglycan, and collagen fiber deposition in the defect area of HPS-F-treated femurs. Therefore, HPS-F may offer a promising and accessible therapeutic approach to accelerating bone regeneration by a single injection into the bone defect site.
... Melatonin interacts with melatonin receptor 1 (MT1) and melatonin receptor 2 (MT2) in cells, mainly exerting antioxidant effects [93]. Moreover, melatonin improved periodontal parameters, including bleeding on probing; probing depth; clinical attachment level; decreased pro-inflammatory cytokines IL-1b, IL-6, and TNF-α [94]; and stimulated the proliferation of osteoblasts, promoting bone formation [95]. However, these results were not corroborated by the study conducted by Konečná and coworkers, analyzing the effect of exogenous melatonin in an animal model of periodontitis and in patients with periodontitis [96]. ...
Periodontal disease is an inflammatory condition characterized by an aberrant immune response against a dysbiotic dental biofilm, with oxidative stress performing an essential role in its pathogenesis. This paper presents a patent mining, performed in the Orbit Intelligence patent database, related to antioxidant phytochemicals in the technological developments that are working to prevent and treat periodontal disease. To access the documents, the descriptors “PERIODONTAL” and “ANTIOXIDANT” were typed in the title, abstract, and claim search fields. A total of 322 patents demonstrate the growing interest in researching natural antioxidants for scientific and technological purposes. The top ten countries regarding the number of family patents produced were the United States, the European Office, Japan, South Korea, China, India, Mexico, Denmark, Canada, and Great Britain. The most cited compounds were vitamin C, green tea, quercetin, melatonin, lycopene, resveratrol, and curcumin. These compounds have been used for the technological development of gels, membranes, dentifrices, chewing gum, orally disintegrating film, mouthwash, mouth spray, and mouth massage cream and exhibit the ability to neutralize free radicals and reduce oxidative stress, a critical factor in the development and progression of periodontal diseases. The patent documents have shown that using antioxidant compounds in conjunction with traditional periodontal treatments is a promising area of interest in periodontal therapy.
... This is particularly beneficial compared to traditional permanent implants, as it reduces the risk of long-term complications associated with hardware, such as irritation or infection. Using biodegradable implants streamlines the overall treatment process, enhances patient comfort, and potentially lowers healthcare costs by eliminating the need for secondary removal surgery [31]. ...
... The biomaterials market is experiencing rapid growth, with expectations to double from 105 billion USD in 2019 to 206 billion USD in 2024, reflecting a compound annual growth rate of 14.5%. Meanwhile, the production of polymers has surged from 2 million tons in 1950 to 380 million tons in 2015, yet biobased and biodegradable polymers still represent a small fraction of this volume [19][20]. ...
The application of nanofiber technology in the biomedical field has garnered significant interest due to its potential to revolutionize areas such as tissue engineering, wound healing, and antimicrobial treatments. This paper provides a comprehensive review of the recent advancements in nanofiber technology, particularly focusing on electrospinning and 3D printing methods that enable the fabrication of scaffolds mimicking the native extracellular matrix. These technologies have facilitated the development of nanofibers with high surface-to-volume ratios, adjustable porosity, and enhanced mechanical properties, tailored to meet specific biomedical needs. Despite their promising features, challenges such as the optimization of pore size for effective cell infiltration and the mechanical robustness required for hard tissue regeneration remain. The review also explores the evolution of sustainable polymers from natural resources, highlighting their potential to create biodegradable and biocompatible scaffolding materials. Future directions emphasize the need for cross-disciplinary collaboration to overcome current limitations and scale production from laboratory to industrial levels. The ongoing research and development efforts aim to refine the properties of nanofibers to achieve optimal performance in clinical applications, underlining the dynamic and evolving nature of this field.
... The chemical structures of nanofibers can also be analyzed using techniques such as nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR). Not only can these approaches detect single structures, but also intermolecular interactions [191]. ...
Guided tissue/bone regeneration (GTR/GBR) is a widely used technique in dentistry to facilitate the regeneration of damaged bone and tissue, which involves guiding materials that eventually degrade, allowing newly created tissue to take its place. This comprehensive review the evolution of biomaterials for guided bone regeneration that showcases a progressive shift from non-resorbable to highly biocompatible and bioactive materials, allowing for more effective and predictable bone regeneration. The evolution of biomaterials for guided bone regeneration GTR/GBR has marked a significant progression in regenerative dentistry and maxillofacial surgery. Biomaterials used in GBR have evolved over time to enhance biocompatibility, bioactivity, and efficacy in promoting bone growth and integration. This review also probes into several promising fabrication techniques like electrospinning and latest 3D printing fabrication techniques, which have shown potential in enhancing tissue and bone regeneration processes. Further, the challenges and future direction of GTR/GBR are explored and discussed.
... 45 Tissue regenerative scaffolds provide support for the cells to grow and can also be used to deliver bioactive growth factors to further induce tissue regeneration. 46 Although many materials have been observed to induce bone regeneration, PDL regeneration is still a challenge that has yet to be overcome. 47 Recent studies have attempted to achieve PDL regeneration by using regenerative cytokines encapsulated in scaffolds. ...
Background/Aim: The ideal treatment of tooth avulsion is replantation. However, replanting teeth may lead to root resorption. Fibroblast growth factor-2 (FGF-2) is a cytokine that plays an important role in wound repair and tissue regeneration. Recently, FGF-2 has been studied a potential regenerative agent to prevent root resorption and ankylosis. The aim of this review is to analyze and summarize the currently available literature focusing on using FGF-2 based regenerative modalities to improve the outcomes of tooth replantation. Materials and Methods: An electronic search was conducted via PubMed/Medline, Google Scholar and ISI Web of Knowledge, using the Medical Subject Headings (MeSH) terms “Basic fibroblast growth factor,” “Fibroblast growth factor-2,” “tooth replantation,” and “replantation” for studies published between January 2001 and June 2021. Data was extracted and quality assessment was carried using the ARRIVE guidelines. Results: Nine animal studies were included in this review. In six studies, FGF-2 had a favorable effect on the tissue regeneration around roots of replanted teeth when compared to other treatment groups. However, quality assessment of the studies revealed many sources of bias and deficiencies in the studies. Conclusions: Within the limitations of this study, it may be concluded that FGF-2 may improve the outcomes of delayed replantation of avulsed teeth. However, more long-term animal studies, with improved experimental designs, and clinical trials are required to determine the clinical potential of the growth factor in improving the outcomes of delayed tooth replantation.
