Paulina Adamska, Marcin Stasiak, Natalia Kobusińska, Michał Bartmański, Adam Zedler, Michał Studniarek
{"title":"Treatment of Medication-Related Osteonecrosis of the Jaw Without and With the Use of Advanced Platelet-Rich Fibrin: A Retrospective Clinical Study.","authors":"Paulina Adamska, Marcin Stasiak, Natalia Kobusińska, Michał Bartmański, Adam Zedler, Michał Studniarek","doi":"10.3390/jfb16050180","DOIUrl":"10.3390/jfb16050180","url":null,"abstract":"<p><strong>Background: </strong>Medication-related osteonecrosis of the jaw (MRONJ) is drug-induced bone destruction that is exposed for a minimum of 6 to 8 weeks in patients who have not received head and neck radiotherapy and who have not been diagnosed with facial bone metastases. MRONJ treatment outcomes are unpredictable. Therefore, alternative treatment methods are being explored, such as blood-derived platelet-rich preparations enriched with growth factors, including advanced platelet-rich fibrin (A-PRF). The presence of growth factors may enhance healing and reduce post-procedure complications. There are no studies examining the effect of A-PRF on the healing of patients with MRONJ. The aim of this study was to retrospectively evaluate treatment outcomes of patients with MRONJ surgically treated without and with the use of A-PRF.</p><p><strong>Materials and methods: </strong>This retrospective study included 28 patients who suffered from osteomyelitis due to MRONJ and underwent surgical treatment between 2019 and 2024. The patients were divided into two groups: the first group received surgical treatment without A-PRF, and the second group received surgical treatment with the application of A-PRF. This study analyzed demographic and clinical data, as well as treatment outcomes.</p><p><strong>Results: </strong>The patients were aged from 43 to 82 years. The most common cause of MRONJ was the administration of zoledronic acid for oncological reasons (22 patients, 78.6%), given intravenously. In 20 patients (71.4%), the antiresorptive treatment lasted longer than three years. The obtained healing distribution was binomial (presence or absence of healing). Estimation of the probability of healing using the maximum likelihood method provided a result of approximately 64%. The probability of ten or more healed patients in the A-PRF group was 41%. A-PRF helps with a probability of 59%, and without A-PRF, it was lower. Concomitantly, the differences between the group with A-PRF and without A-PRF were not statistically significant.</p><p><strong>Conclusions: </strong>The patients with MRONJ should have regular check-ups with radiological examinations at least every six months to detect possible recurrence. Treatment for MRONJ is long and difficult. Treatment of non-advanced lesions, without additional risk factors (such as treatment with zoledronate intravenously for oncological purposes for 3 years), showed a better prognosis. Sometimes, in addition to surgery, it is necessary to consider alternative methods. A-PRF may enhance MRONJ healing. However, there is no evidence of a significant effect of A-PRF on the healing of MRONJ.</p>","PeriodicalId":15767,"journal":{"name":"Journal of Functional Biomaterials","volume":"16 5","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12112225/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144150653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Comprehensive Literature Review of Total Hip Arthroplasty (THA): Part 1-Biomaterials.","authors":"Chiara Morano, Salvatore Garofalo, Paolo Bertuccio, Agata Sposato, Irene Zappone, Leonardo Pagnotta","doi":"10.3390/jfb16050179","DOIUrl":"10.3390/jfb16050179","url":null,"abstract":"<p><p>The rapid advancement of materials science has revolutionized total hip arthroplasty (THA), a critical orthopedic procedure aimed at restoring mobility and improving patient quality of life. This review investigates the evolution of biomaterials used in THA, analyzing their mechanical, biological, and chemical properties. The study outlines the transition from early natural materials to modern metals, polymers, and ceramics, highlighting their benefits and limitations in clinical applications. Particular emphasis is placed on the development of advanced materials such as highly cross-linked polyethylene (HXLPE), zirconia-toughened alumina (ZTA), and tantalum alloys (Ta), which demonstrate enhanced biocompatibility, wear resistance, and longevity. By examining emerging trends, including bioactive coatings and nanotechnology, this paper aims to provide a comprehensive understanding of current challenges and future directions in material selection for hip prostheses, ultimately aiming to minimize annual revision rates and improve long-term outcomes.</p>","PeriodicalId":15767,"journal":{"name":"Journal of Functional Biomaterials","volume":"16 5","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12112016/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144150587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David C Markel, Therese Bou-Akl, Bin Wu, Pawla Pawlitz, Xiaowei Yu, Liang Chen, Tong Shi, Weiping Ren
{"title":"In Vivo Cell Migration and Growth Within Electrospun Porous Nanofibrous Scaffolds with Different Pore Sizes in a Mouse Pouch Model.","authors":"David C Markel, Therese Bou-Akl, Bin Wu, Pawla Pawlitz, Xiaowei Yu, Liang Chen, Tong Shi, Weiping Ren","doi":"10.3390/jfb16050181","DOIUrl":"10.3390/jfb16050181","url":null,"abstract":"<p><p>Cellular infiltration into traditional electrospun nanofibers (NFs) is limited due to their dense structures. We were able to obtain polycaprolactone (PCL) NFs with variable and defined pore sizes and thicknesses by using a customized programmed NF collector that controls the moving speed during electrospinning. NFs obtained by this method were tested in vitro and have shown better cell proliferation within the NFs with larger pore sizes. This study investigated in vivo host cell migration and neovascularization within implanted porous PCL NF discs using a mouse pouch model. Four types of PCL NFs were prepared and classified based on the electrospinning speed: NF-zero (static control), NF-low (0.085 mm/min), NF-mid (0.158 mm/min) and NF-high (0.232 mm/min) groups. With the increase in the speed, we observed an increase in the pore area; NF-zero (11.6 ± 6.2 μm<sup>2</sup>), NF-low (37.4 ± 28.6 μm<sup>2</sup>), NF-mid (67.6 ± 54.8 μm<sup>2</sup>), and NF-high (292.3 ± 286.5 μm<sup>2</sup>) groups. The NFs were implanted into air pouches of BALB/cJ mice. Mice without NFs served as control. Animals were sacrificed at 7 and 28 days after the implantation. Pouch tissues with implanted NFs were collected for histology (<i>n</i> = three per group and time point). The efficiency of the tissue penetration into PCL NF sheets was closely linked to the pore size and area. NFs with the highest pore area had more efficient tissue migration and new blood vessel formation compared to those with a smaller pore area. No newly formed blood vessels were observed in NF-zero sheets up to 28 days. We believe that a porous NF scaffold with a controllable pore size and thickness has great potential for tissue repair/regeneration and for other healthcare applications.</p>","PeriodicalId":15767,"journal":{"name":"Journal of Functional Biomaterials","volume":"16 5","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12112096/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144150590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lei Deng, Liya Ai, Runxu Li, Wusheng Xu, Lingling Zheng, Chao Wang, Haitao Huang
{"title":"Animal Experimental Study on Delayed Implantation in a Severely Atrophic Alveolar Ridge Reconstructed Using a 3D-Printed Bioactive Glass Scaffold: A Pilot Study.","authors":"Lei Deng, Liya Ai, Runxu Li, Wusheng Xu, Lingling Zheng, Chao Wang, Haitao Huang","doi":"10.3390/jfb16050176","DOIUrl":"10.3390/jfb16050176","url":null,"abstract":"<p><p>In this study, a scaffold was designed using 3-Matic software 12.0 (Materialise, Leuven, Belgium) and fabricated via Digital Light Processing (DLP) 3D printing technology, followed by a mechanical property evaluation. The scaffold was bilaterally implanted into mandibular bone defect models in four Beagle dogs to facilitate guided alveolar bone regeneration. After 12 weeks, samples were harvested from two dogs for radiographic and histopathological evaluations. In the remaining two dogs, two dental implants were placed into the scaffold sites. After an additional 12 weeks, samples were harvested for further radiographic and histopathological assessments. (1) Compression testing of the scaffold demonstrated a compressive strength of 24.77 ± 2.36 MPa. (2) Three of the implantation sites exhibited poor wound healing and exposure of the bone grafts early post-surgery (4 weeks), with an exposure rate of 37.5%. (3) Micro-CT imaging revealed a uniform distribution of newly formed bone within the scaffold, with an average bone height of 4.05 ± 0.55 mm and a bone volume fraction of 43.93 ± 4.68%. Histopathological analysis demonstrated the presence of vascularized tissue, non-calcified bone, and newly calcified bone within the scaffold. Additionally, newly formed calcified bone and vascularized tissue were observed at the interface between the implant and the scaffold. These findings suggest that DLP 3D-printed A-W bioactive glass scaffolds represent a promising approach for guided alveolar bone regeneration in dental implant applications.</p>","PeriodicalId":15767,"journal":{"name":"Journal of Functional Biomaterials","volume":"16 5","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12112221/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144150599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Metformin-Enhanced Secretome from Periodontal Ligament Stem Cells Promotes Functional Recovery in an Inflamed Periodontal Model: In Vitro Study.","authors":"Han Na Suh, Ju Young Ji, Jung Sun Heo","doi":"10.3390/jfb16050177","DOIUrl":"10.3390/jfb16050177","url":null,"abstract":"<p><strong>Objective: </strong>Secretory factors, termed the secretome, in the conditioned medium (CM) from dental mesenchymal stem cells (MSCs) have shown anti-inflammatory, anti-apoptotic, and tissue regenerative potential. This cell-free product could be further developed by preconditioning cells with various biochemical agents, which lead to a change in secretome and CM profiles. Among the favorable candidates for CM production, metformin as an anti-diabetic medication is currently considered a potential agent for dental hard tissue and periodontal regeneration. Here, we aimed to assess the composition of CM from periodontal ligament stem cells (PDLSCs) grown in metformin-preconditioned media (Met-CM) compared to normal PDLSC-CM and assess the ability of Met-CM to recover the function of inflamed PDLSCs.</p><p><strong>Methods: </strong>Met-CM and normal CM were collected from PDLSCs grown with or without 50 µM metformin, respectively, under healthy culture conditions. Mass spectrometry and liquid chromatography-tandem mass spectrometry (LC-MS/MS) were performed to comparatively evaluate the proteomic profiles in PDLSC-CM versus Met-CM. We then treated the PDLSC cultures with lipopolysaccharide (LPS) from <i>Porphyromonas gingivalis</i> to induce inflammation and evaluated the osteogenic/cementogenic differentiation in the presence of Met-CM or normal PDLSC-CM by assessing alkaline phosphatase activity, intracellular calcium levels, and mRNA expression of osteogenic and cementogenic factors, including RUNX2, OCN, OSX, and CEMP-1. Subsequently, we performed RNA sequencing to identify transcriptomic changes in the treated cells.</p><p><strong>Results: </strong>We identified 202 differentially expressed proteins, 175 of which were significant, in Met-CM versus normal PDLSC-CM. Among the analyzed groups, the top three protein classes were protein-binding activity modulator, cytoskeletal protein, and extracellular matrix (ECM) protein. Treatment of PDLSCs with LPS significantly attenuated ALP activity, [Ca<sup>2+</sup>]<sub>i</sub>, and the mRNA expression levels of RUNX2, OCN, OSX, and CEMP-1, whereas treatment with Met-CM alone markedly enhanced PDLSC differentiation activity compared with the control. Moreover, osteogenic/cementogenic differentiation of the LPS-treated PDLSCs was recovered through incubation in Met-CM. Transcriptomic analysis identified 511 and 3591 differentially expressed genes in the control versus Met-CM and LPS versus LPS + Met-CM groups, respectively. The enrichment of biological processes includes positive regulation of DNA-templated transcription and skeletal system morphogenesis in the control versus Met-CM comparison, as well as positive regulation of transcription from the RNA polymerase II promoter and negative regulation of the apoptotic process in the LPS versus LPS + Met-CM comparison. Molecular function analysis demonstrated the enrichment of protein-binding terms among the DEGs from each comparison.</p><p><stron","PeriodicalId":15767,"journal":{"name":"Journal of Functional Biomaterials","volume":"16 5","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12112599/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144150597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Luize Kremer Gamba, Laiza Kremer Gamba, Camila da Costa, Aline Luri Takejima, Rossana Baggio Simeoni, Isabella Cristina Mendes Rossa, Anna Clara Faidiga Silva, Julia Letícia de Bortolo, Marcos Antônio Denk, Seigo Nagashima, Carlos de Almeida Barbosa, Paulo Cesar Lock Silveira, Júlio César Francisco, Luiz César Guarita-Souza
{"title":"Wharton's Jelly Bioscaffolds Improve Cardiac Repair with Bone Marrow Mononuclear Stem Cells in Rats.","authors":"Luize Kremer Gamba, Laiza Kremer Gamba, Camila da Costa, Aline Luri Takejima, Rossana Baggio Simeoni, Isabella Cristina Mendes Rossa, Anna Clara Faidiga Silva, Julia Letícia de Bortolo, Marcos Antônio Denk, Seigo Nagashima, Carlos de Almeida Barbosa, Paulo Cesar Lock Silveira, Júlio César Francisco, Luiz César Guarita-Souza","doi":"10.3390/jfb16050175","DOIUrl":"10.3390/jfb16050175","url":null,"abstract":"<p><p>This study assessed the impact of implanting mononuclear stem cells and Wharton's Jelly (WJ), either separately or together, on left ventricular dysfunction following myocardial infarction in Wistar rats. Functional and histopathological parameters were analyzed, and a rat model of left anterior descending coronary artery ligation was used. Treatments included an intramyocardial injection of 0.9% sodium chloride (control, <i>n</i> = 14), decellularized WJ (<i>n</i> = 12), bone marrow-derived mononuclear cells (BMMC) (<i>n</i> = 12), and bone marrow-derived mononuclear cells (BMMC) combined with WJ (<i>n</i> = 15). Echocardiography assessed the left ventricular function and ejection fraction over four weeks. Histological and immunohistochemical analyses with anti-factor VIII evaluated angiogenesis and collagen types I and III. The results showed no statistically significant effect on ventricular remodeling 30 days post-acute myocardial infarction (AMI). Moreover, the infarct area was significantly smaller in the BMMC + WJ group compared to the control group, suggesting a potential benefit in reducing myocardial scarring. BMMC + WJ therapy demonstrated potential for functional improvement and infarct size reduction 30 days post-infarction. Further studies are needed to confirm its therapeutic benefits.</p>","PeriodicalId":15767,"journal":{"name":"Journal of Functional Biomaterials","volume":"16 5","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12112017/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144150656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alafate Abudouwanli, Ge Peng, Mengyao Yang, Wanchen Zhao, Quan Sun, Shan Wang, Yi Tan, Arisa Ikeda, Hideoki Ogawa, Ko Okumura, François Niyonsaba
{"title":"AMP-IBP5: A Multifunctional Antimicrobial Peptide for Advanced Wound Healing and Inflammatory Skin Disorders.","authors":"Alafate Abudouwanli, Ge Peng, Mengyao Yang, Wanchen Zhao, Quan Sun, Shan Wang, Yi Tan, Arisa Ikeda, Hideoki Ogawa, Ko Okumura, François Niyonsaba","doi":"10.3390/jfb16050174","DOIUrl":"10.3390/jfb16050174","url":null,"abstract":"<p><p>Wound healing is a complex, multiphase process crucial for restoring tissue integrity and functionality after injury. Among the emerging therapeutic approaches, antimicrobial peptides (AMPs) have shown substantial promise because of their dual role in microbial defense and cellular modulation. AMP-IBP5, a novel AMP derived from insulin-like growth factor-binding protein 5, exhibits both antimicrobial and wound-healing properties, making it a promising therapeutic candidate. This peptide exhibits robust antimicrobial activity, augments keratinocyte proliferation, increases fibroblast migration, induces angiogenesis, and modulates the immune response. Mechanistically, AMP-IBP5 activates Mas-related G protein-coupled receptors and low-density lipoprotein receptor-related protein 1 (LRP1) in keratinocytes, stimulating IL-8 production and vascular endothelial growth factor expression to accelerate wound healing. This molecule also interacts with LRP1 in fibroblasts to increase cell migration and promote angiogenesis while mitigating inflammatory responses through targeted cytokine modulation. Preclinical studies have demonstrated its remarkable efficacy in promoting tissue repair in diabetic wounds and inflammatory skin conditions, including atopic dermatitis and psoriasis. This review delves into the broad therapeutic potential of AMP-IBP5 across dermatological applications, focusing on its intricate mechanisms of action, comparative advantages, and its path toward clinical and commercial application.</p>","PeriodicalId":15767,"journal":{"name":"Journal of Functional Biomaterials","volume":"16 5","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12112235/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144150593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mariana Ferreira, Hélder Costa, Nélio Veiga, Maria J Correia, Ana T P C Gomes, Pedro C Lopes
{"title":"Do Clear Aligners Release Toxic Chemicals?-A Systematic Review.","authors":"Mariana Ferreira, Hélder Costa, Nélio Veiga, Maria J Correia, Ana T P C Gomes, Pedro C Lopes","doi":"10.3390/jfb16050173","DOIUrl":"10.3390/jfb16050173","url":null,"abstract":"<p><p>Clear aligners are a modern orthodontic solution designed to address dental malocclusions discreetly and effectively. In terms of clinical side effects, the most reported issues among aligner users are mild irritation of the oral mucosa, localized inflammation, and hypersensitivity. The use of advanced polymer materials in clear aligners, such as polyurethane and PET-G, has gained widespread acceptance due to their mechanical properties, biocompatibility, and aesthetic appeal. However, concerns persist regarding their potential to release chemical compounds. Our goal is to understand the impact of clear aligner toxicity on the oral cavity of orthodontic patients. An extensive systematic search was conducted in the electronic databases PubMed, Scopus, and Cochrane to identify articles with relevant data. This systematic review was conducted following the Preferred Reporting Items for Systematic reviews and Meta-analysis guidelines (PRISMA) to answer a question formulated according to the Population, Intervention, Comparison, and Outcomes. Four hundred and thirteen articles potentially relevant were identified and after applying PRISMA guidelines and inclusion/exclusion criteria, seven articles were included in this review. Our results suggest that clear aligners are generally safe, but concerns remain regarding the chemical leaching of thermoplastic materials, bacterial accumulation due to reduced saliva flow, and mild inflammatory responses. Our review emphasizes that although most materials are biocompatible, some exhibit moderate cytotoxicity, with the potential to impact these patients' oral health, underscoring the need for continued research and improvements in material composition.</p>","PeriodicalId":15767,"journal":{"name":"Journal of Functional Biomaterials","volume":"16 5","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12112703/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144150649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mircea Cătălin Ivănescu, Corneliu Munteanu, Ramona Cimpoeșu, Bogdan Istrate, Fabian Cezar Lupu, Marcelin Benchea, Eusebiu Viorel Șindilar, Alexandru Vlasa, Ovidiu Stamatin, Georgeta Zegan
{"title":"The Influence of Ca on Mechanical Properties of the Mg-Ca-Zn-RE-Zr Alloy for Orthopedic Applications.","authors":"Mircea Cătălin Ivănescu, Corneliu Munteanu, Ramona Cimpoeșu, Bogdan Istrate, Fabian Cezar Lupu, Marcelin Benchea, Eusebiu Viorel Șindilar, Alexandru Vlasa, Ovidiu Stamatin, Georgeta Zegan","doi":"10.3390/jfb16050170","DOIUrl":"10.3390/jfb16050170","url":null,"abstract":"<p><strong>Background: </strong>This study examined how the concentration of calcium (Ca) influences the microstructure, mechanical characteristics, and tribological attributes of Mg-Ca-Zn-RE-Zr alloys for orthopedic medicine.</p><p><strong>Materials and methods: </strong>Experimental alloys with 0.1 and 0.5 wt% Ca were prepared in a controlled atmosphere induction furnace. The microstructure of the alloys was investigated by scanning electron microscopy, the chemical composition by X-ray fluorescence and energy-dispersive spectroscopy, the mechanical properties by indentation and scratching, and the corrosion resistance by linear and cyclic potentiometry.</p><p><strong>Results: </strong>The alloy with 0.1% Ca exhibited greater fluctuations in the coefficient of friction, while the sample with 0.5% Ca showed a higher susceptibility to cracking. Regarding corrosion resistance, both samples exhibited a generalized corrosion trend with similar corrosion currents. At lower Ca concentrations (0.1%), the refined microstructure of the alloys provided an elastic modulus closer to that of human bone, minimizing the risk of excessive local stress and promoting uniform load distribution at the bone-implant interface.</p><p><strong>Conclusion: </strong>The 0.5% Ca alloy offered superior tribological stability and better shock absorption, making it suitable for applications requiring long-term stability. The study highlighted the potential of both compositions based on the specific requirements of biodegradable orthopedic implants.</p>","PeriodicalId":15767,"journal":{"name":"Journal of Functional Biomaterials","volume":"16 5","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12111830/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144150573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ashraf Al Madhoun, Khaled Meshal, Neus Carrió, Eduard Ferrés-Amat, Elvira Ferrés-Amat, Miguel Barajas, Ana Leticia Jiménez-Escobar, Areej Said Al-Madhoun, Alaa Saber, Yazan Abou Alsamen, Carles Marti, Maher Atari
{"title":"Correction: Al Madhoun et al. Randomized Clinical Trial: Bone Bioactive Liquid Improves Implant Stability and Osseointegration. <i>J. Funct. Biomater.</i> 2024, <i>15</i>, 293.","authors":"Ashraf Al Madhoun, Khaled Meshal, Neus Carrió, Eduard Ferrés-Amat, Elvira Ferrés-Amat, Miguel Barajas, Ana Leticia Jiménez-Escobar, Areej Said Al-Madhoun, Alaa Saber, Yazan Abou Alsamen, Carles Marti, Maher Atari","doi":"10.3390/jfb16050171","DOIUrl":"10.3390/jfb16050171","url":null,"abstract":"<p><p>Error in Figure and Figure Legend [...].</p>","PeriodicalId":15767,"journal":{"name":"Journal of Functional Biomaterials","volume":"16 5","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12111947/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144150630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}