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De Carvalho B, Dory E, Trus C, Pirson J, Germain L, Lecloux G, Lambert F, Rompen E. Biological performance of a novel bovine hydroxyapatite in a guided bone regeneration model: A preclinical study in a mandibular defect in dogs. Clin Implant Dent Relat Res 2024; 26:183-196. [PMID: 37789642 DOI: 10.1111/cid.13260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/21/2023] [Accepted: 07/29/2023] [Indexed: 10/05/2023]
Abstract
OBJECTIVES This preclinical model study aims to evaluate the performance and safety of a novel hydroxyapatite biomaterial (Wishbone Hydroxyapatite, WHA) on guided bone regeneration compared to a commercially available deproteinized bovine bone mineral (Bio-Oss, BO). MATERIAL AND METHODS Twenty-four beagle dogs were allocated to three timepoint cohorts (4, 12, and 26 weeks) of eight animals each. In all animals, four critical-sized, independent wall mandibular defects were created (32 defects/cohort). Each animal received all four treatments, allocated randomly to separated defects: WHA + collagen membrane (M), BO + M, no treatment (Sham, Sh), and Sh + M. At each timepoint, the specimens were harvested for histologic and histomorphometric analyses to determine the newly formed bone and osteoconductivity. RESULTS At 4 weeks, bone regeneration was significantly higher for WHA + M (46.8%) when compared to BO + M (21.4%), Sh (15.1%), and Sh + M (23.1%) (p < 0.05); at 12 and 26 weeks, regeneration was similar for WHA and BO. Bone-to-material contact increased over time similarly for WHA + M and BO + M. From a safety point of view, inflammation attributed to WHA + M or BO + M was minimal; necrosis or fatty infiltrate was absent. CONCLUSIONS WHA + M resulted in higher bone regeneration rate than BO + M at 4 weeks. Both BO + M and WHA + M were more efficient than both Sh groups at all timepoints. Safety and biocompatibility of WHA was favorable and comparable to that of BO.
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Affiliation(s)
- Bruno De Carvalho
- Department of Periodontology, Oro-Dental and Implant Surgery, Dental Biomaterial Research Unit, Liège, Belgium
| | | | | | | | | | - Geoffrey Lecloux
- Department of Periodontology, Oro-Dental and Implant Surgery, Dental Biomaterial Research Unit, Liège, Belgium
| | - France Lambert
- Department of Periodontology, Oro-Dental and Implant Surgery, Dental Biomaterial Research Unit, Liège, Belgium
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Dong K, Zhang Y, Ji HR, Guan ZL, Wang DY, Guo ZY, Deng SJ, He BY, Xing JF, You CY. Dexamethasone-Loaded Lipid Calcium Phosphate Nanoparticles Treat Experimental Colitis by Regulating Macrophage Polarization in Inflammatory Sites. Int J Nanomedicine 2024; 19:993-1016. [PMID: 38299194 PMCID: PMC10829593 DOI: 10.2147/ijn.s442369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 01/20/2024] [Indexed: 02/02/2024] Open
Abstract
Background The M1/M2 polarization of intestinal macrophages exerts an essential function in the pathogenesis of ulcerative colitis (UC), which can be adjusted to alleviate the UC symptoms. Purpose A kind of pH-sensitive lipid calcium phosphate core-shell nanoparticles (NPs), co-loading with dexamethasone (Dex) and its water-soluble salts, dexamethasone sodium phosphate (Dsp), was constructed to comprehensively regulate macrophages in different states towards the M2 phenotype to promote anti-inflammatory effects. Methods Dex and Dsp were loaded in the outer lipid shell and inner lipid calcium phosphate (Cap) core of the LdCaPd NPs, respectively. Then, the morphology of NPs and methods for determining drug concentration were investigated, followed by in vitro protein adsorption, stability, and release tests. Cell experiments evaluated the cytotoxicity, cellular uptake, and macrophage polarization induction ability of NPs. The in vivo distribution and anti-inflammatory effect of NPs were evaluated through a 2,4,6-trinitrobenzene sulfonic acid (TNBS)-induced BALB/c mice ulcerative colitis model. Results The LdCaPd NPs showed a particle size of about 200 nm and achieved considerable loading amounts of Dex and Dsp. The in vitro and in vivo studies revealed that in the acidic UC microenvironment, the cationic lipid shell of LdCaPd underwent protonated dissociation to release Dex first for creating a microenvironment conducive to M2 polarization. Then, the exposed CaP core was further engulfed by M1 macrophages to release Dsp to restrict the pro-inflammatory cytokines production by inhibiting the activation and function of the nuclear factor kappa-B (NF-κB) through activating the GC receptor and the NF kappa B inhibitor α (I-κBα), respectively, ultimately reversing the M1 polarization to promote the anti-inflammatory therapy. Conclusion The LdCaPd NPs accomplished the sequential release of Dex and Dsp to the UC site and the inflammatory M1 macrophages at this site, promoting the regulation of macrophage polarization to accelerate the remission of UC symptoms.
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Affiliation(s)
- Kai Dong
- Department of Pharmacy, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China
- School of Pharmacy, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China
| | - Ying Zhang
- School of Pharmacy, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China
| | - Hong Rui Ji
- School of Pharmacy, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China
| | - Ze Lin Guan
- School of Pharmacy, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China
| | - Dan Yang Wang
- School of Pharmacy, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China
| | - Zi Yang Guo
- School of Pharmacy, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China
| | - Shu Jing Deng
- School of Pharmacy, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China
| | - Bin Yang He
- School of Pharmacy, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China
| | - Jian Feng Xing
- School of Pharmacy, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China
| | - Cui Yu You
- Department of Pharmacy, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China
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Kunert M, Piwonski I, Hardan L, Bourgi R, Sauro S, Inchingolo F, Lukomska-Szymanska M. Dentine Remineralisation Induced by "Bioactive" Materials through Mineral Deposition: An In Vitro Study. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:274. [PMID: 38334546 PMCID: PMC10857417 DOI: 10.3390/nano14030274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 02/10/2024]
Abstract
This study aimed to assess the ability of modern resin-based "bioactive" materials (RBMs) to induce dentine remineralisation via mineral deposition and compare the results to those obtained with calcium silicate cements (CSMs). The following materials were employed for restoration of dentine cavities: CSMs: ProRoot MTA (Dentsply Sirona), MTA Angelus (Angelus), Biodentine (Septodont), and TheraCal LC (Bisco); RBMs: ACTIVA BioACTIVE Base/Liner (Pulpdent), ACTIVA Presto (Pulpdent), and Predicta Bioactive Bulk (Parkell). The evaluation of the mineral deposition was performed through scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) on the material and dentine surfaces, as well as at the dentine-material interface after immersion in simulated body fluid. Additionally, the Ca/P ratios were also calculated in all the tested groups. The specimens were analysed after setting (baseline) and at 24 h, 7, 14, and 28 days. ProRoot MTA, MTA Angelus, Biodentine, and TheraCal LC showed significant surface precipitation, which filled the gap between the material and the dentine. Conversely, the three RBMs showed only a slight ability to induce mineral precipitation, although none of them was able to remineralise the dentine-material interface. In conclusion, in terms of mineral precipitation, modern "bioactive" RBMs are not as effective as CSMs in inducing dentine remineralisation; these latter represent the only option to induce a possible reparative process at the dentin-material interface.
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Affiliation(s)
- Marta Kunert
- Department of General Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland;
| | - Ireneusz Piwonski
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, 163 Pomorska St., 90-236 Lodz, Poland;
| | - Louis Hardan
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon; (L.H.); (R.B.)
| | - Rim Bourgi
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon; (L.H.); (R.B.)
- Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, University of Strasbourg, 67000 Strasbourg, France
| | - Salvatore Sauro
- Dental Biomaterials and Minimally Invasive Dentistry, Departamento de Odontología, Facultad de Ciencias de la Salud, Universidad CEU-Cardenal Herrera C/Del Pozo ss/n, Alfara del Patriarca, 46115 Valencia, Spain
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Francesco Inchingolo
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy;
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Shirazi M, Pirzeh A, Atashgaran M. Antimicrobial properties of glass-ionomer cement incorporated with nano-hydroxyapatite against mutans streptococci and lactobacilli under orthodontic bands: An in vivo split-mouth study. Dent Res J (Isfahan) 2024; 21:1. [PMID: 38425324 PMCID: PMC10899160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 10/19/2023] [Accepted: 10/30/2023] [Indexed: 03/02/2024] Open
Abstract
Background Fixed orthodontic appliances enhance dental plaque accumulation. Glass ionomer (GI) is among the most popular orthodontic cement. It possesses antibacterial properties; however, its antibacterial activity may not be sufficient for caries prevention. Although evidence shows that the addition of 8wt% nano-hydroxyapatite (nHA) may enhance the antibacterial properties of GI, no clinical study has been conducted in this respect. Thus, this study aimed to assess the subgingival accumulation of Streptococcus mutans (S. mutans) and Lactobacillus acidophilus (L. acidophilus) around orthodontic bands cemented with conventional GI and GI reinforced with 8wt% nHA. Materials and Methods This split-mouth clinical trial was conducted on 20 patients requiring a lingual arch. The patients were randomly assigned to two groups. In group 1, the right molar band was cemented with pure Fuji I (GC), and the left was cemented with Fuji I containing 8wt% nHA. In group 2, the right molar band was cemented with Fuji I containing 8wt% nHA, and the left was cemented with Fuji I. After 3 months, subgingival sampling was performed by sterile paper points. S. mutans and L. acidophilus were cultured on MSB and MRS agar, and colonies were counted by a colony counter. Data were analyzed by independent samples t-test using SPSS 25 at a 0.05 level of significance. Results The mean counts of S. mutans, aerobic and anaerobic lactobacilli, and total bacterial around orthodontic bands cemented with Fuji I containing 8wt% nHA were significantly lower than those around orthodontic bands cemented with pure Fuji I (P < 0.05). Conclusion The addition of 8wt% nHA to GI cement can enhance its antibacterial properties for the cementation of orthodontic bands, decrease the accumulation of cariogenic bacteria, and probably decrease the incidence of caries in orthodontic patients.
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Abuljadayel JA. The Potential Uses of Baobab Tree's Medicinal Effects in Dentistry: A Literature Review. Cureus 2023; 15:e49304. [PMID: 38957190 PMCID: PMC11218599 DOI: 10.7759/cureus.49304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/22/2023] [Indexed: 07/04/2024] Open
Abstract
Adansonia digitata (Baobab) tree is an African tree with a long history in traditional medicine. The local inhabitants of Africa have been using the different tree components to treat medical diseases, such as fever, diarrhea, malaria, cough, dysentery, and microbial infections. Recently, the tree gained the attention of scientists due to its medical and pharmaceutical properties and nutritional values, which generated a myriad number of investigations regarding its phytochemical and macro- and micronutrient contents. The fruit pulp is especially rich in vitamin C, pectin, fibers, and minerals such as calcium, magnesium, potassium, phosphorus, zinc, iron, and copper. Additionally, the leaves contain high levels of calcium, while the seeds are considered a good source of protein and fat. Altogether, they contain a variety of polyphenols, fatty acids, and amino acids. The tree extracts possess potent antioxidant, cell-protective, and anti-inflammatory activities. However, no information was found in the literature about the use of Baobab tree products in the dental field. The aim of this review is to discuss the well-documented medical effects and chemical and mineral components of the different Baobab tree parts from a dental point of view to open more areas of research concerning its potential applications in the dental field. Antioxidants and vitamin C are known to help in maintaining healthy periodontal and gingival tissues. They also help in wound healing and alveolar bone integrity. Moreover, phytochemicals and phenolic compounds have been utilized in controlling dental plaque and manufacturing intracanal medications as they manifest antimicrobial and anti-inflammatory activities. Furthermore, calcium and phosphorus incorporation in dental biomaterials is commonly used in vital pulp therapy and repairing bone defects. After reviewing the reported medicinal and pharmaceutical activities of the Baobab tree, it can be inferred that the tree extracts possess potential uses in the dental field, which requires further investigation for validation.
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Varga M, Kresakova L, Danko J, Vdoviakova K, Humenik F, Rusnak P, Giretova M, Spakovska T, Andrejcakova Z, Kadasi M, Vrzgula M, Criepokova Z, Ivaskova S, Korim F, Medvecky L. Tetracalcium Phosphate Biocement Hardened with a Mixture of Phytic Acid-Phytase in the Healing Process of Osteochondral Defects in Sheep. Int J Mol Sci 2023; 24:15690. [PMID: 37958674 PMCID: PMC10647259 DOI: 10.3390/ijms242115690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/26/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
Hyaline articular cartilage has unique physiological, biological, and biomechanical properties with very limited self-healing ability, which makes the process of cartilage regeneration extremely difficult. Therefore, research is currently focused on finding new and potentially better treatment options. The main objective of this in vivo study was to evaluate a novel biocement CX consisting of tetracalcium phosphate-monetit biocement hardened with a phytic acid-phytase mixture for the regeneration of osteochondral defects in sheep. The results were compared with tetracalcium phosphate-monetit biocement with classic fast-setting cement systems and untreated defects. After 6 months, the animals were sacrificed, and the samples were evaluated using macroscopic and histologic methods as well as X-ray, CT, and MR-imaging techniques. In contrast to the formation of fibrous or fibrocartilaginous tissue on the untreated side, treatment with biocements resulted in the formation of tissue with a dominant hyaline cartilage structure, although fine fibres were present (p < 0.001). There were no signs of pathomorphological changes or inflammation. Continuous formation of subchondral bone and hyaline cartilage layers was present even though residual biocement was observed in the trabecular bone. We consider biocement CX to be highly biocompatible and suitable for the treatment of osteochondral defects.
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Affiliation(s)
- Maros Varga
- Hospital AGEL Kosice-Saca, Lucna 57, 040 15 Kosice-Saca, Slovakia; (M.V.); (P.R.); (T.S.)
| | - Lenka Kresakova
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, Slovakia; (J.D.); (K.V.); (F.H.); (S.I.); (F.K.)
| | - Jan Danko
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, Slovakia; (J.D.); (K.V.); (F.H.); (S.I.); (F.K.)
| | - Katarina Vdoviakova
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, Slovakia; (J.D.); (K.V.); (F.H.); (S.I.); (F.K.)
| | - Filip Humenik
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, Slovakia; (J.D.); (K.V.); (F.H.); (S.I.); (F.K.)
| | - Pavol Rusnak
- Hospital AGEL Kosice-Saca, Lucna 57, 040 15 Kosice-Saca, Slovakia; (M.V.); (P.R.); (T.S.)
| | - Maria Giretova
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia; (M.G.); (L.M.)
| | - Tatiana Spakovska
- Hospital AGEL Kosice-Saca, Lucna 57, 040 15 Kosice-Saca, Slovakia; (M.V.); (P.R.); (T.S.)
| | - Zuzana Andrejcakova
- Department of Biology and Physiology, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, Slovakia;
| | - Marian Kadasi
- Clinic of Ruminants, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, Slovakia;
| | - Marko Vrzgula
- Department of Anatomy, Faculty of Medicine, Pavol Jozef Safarik University in Kosice, Trieda SNP 1, 040 11 Kosice, Slovakia;
| | - Zuzana Criepokova
- Clinic of Horses, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, Slovakia;
| | - Sonja Ivaskova
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, Slovakia; (J.D.); (K.V.); (F.H.); (S.I.); (F.K.)
| | - Filip Korim
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, Slovakia; (J.D.); (K.V.); (F.H.); (S.I.); (F.K.)
| | - Lubomir Medvecky
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia; (M.G.); (L.M.)
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Kariya Y, Shintani K, Horiguchi K, Okuyama K, Muramatsu Y, Tamaki Y, Nakamoto T. Synthesis of β-tricalcium phosphate by modifying the heating process of a dental casting mold. Dent Mater J 2023; 42:717-722. [PMID: 37558423 DOI: 10.4012/dmj.2023-075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
This study investigated a novel method for artificial synthesis of β-tricalcium phosphate (β-TCP). The binder of the phosphate-bonded investment was replaced with calcium oxide instead of magnesium oxide and sintered in an electric furnace. The water/powder mixing ratio for hardening was determined using preliminary experiments. Thermal analysis was performed to check the thermal behavior of the sample tested. In addition, the fired sample was analyzed using an X-ray diffraction apparatus to identify the compounds after sintering. The hardened sample exhibited multiple compounds, including unreacted components, post which, new compounds were generated by heating. Peaks of calcium pyrophosphate and β-TCP were confirmed at 800ºC and 1,300ºC, respectively. β-TCP could be easily synthesized within the limited study by sintering at 1,300ºC both monoammonium phosphate and calcium oxide. Experimental results suggest that β-TCP can be easily synthesized by simulating the conventional dental casting process.
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Affiliation(s)
- Yuko Kariya
- Department of Oral Surgery, Division of Oral Pathogenesis and Disease Control, Asahi University School of Dentistry
| | - Kohei Shintani
- Department of Dental Materials Science, Division of Oral Functional Science and Rehabilitation, Asahi University School of Dentistry
| | - Keiji Horiguchi
- Department of Dental Materials Science, Division of Oral Functional Science and Rehabilitation, Asahi University School of Dentistry
| | - Katsushi Okuyama
- Department of Dental Materials Science, Division of Oral Functional Science and Rehabilitation, Asahi University School of Dentistry
| | - Yasunori Muramatsu
- Department of Oral Surgery, Division of Oral Pathogenesis and Disease Control, Asahi University School of Dentistry
| | - Yukimichi Tamaki
- Department of Dental Materials Science, Division of Oral Functional Science and Rehabilitation, Asahi University School of Dentistry
| | - Tetsuji Nakamoto
- Department of Oral Implantology, Division of Oral Pathogenesis and Disease Control, Asahi University School of Dentistry
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Priyadarshini B, Stango AX, Balasubramanian M, Vijayalakshmi U. In situ fabrication of cerium-incorporated hydroxyapatite/magnetite nanocomposite coatings with bone regeneration and osteosarcoma potential. NANOSCALE ADVANCES 2023; 5:5054-5076. [PMID: 37705779 PMCID: PMC10496897 DOI: 10.1039/d3na00235g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 08/02/2023] [Indexed: 09/15/2023]
Abstract
With the ultimate goal of providing a novel platform able to inhibit bacterial adhesion, biofilm formation, and anticancer properties, cerium-doped hydroxyapatite films enhanced with magnetite were developed via spin-coating. The unique aspect of the current study is the potential for creating cerium-doped hydroxyapatite/Fe3O4 coatings on a titanium support to enhance the functionality of bone implants. To assure an increase in the bioactivity of the titanium surface, alkali pretreatment was done before deposition of the apatite layer. Scanning electron microscopy (SEM) in conjunction with energy-dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD) analysis, and Fourier transform-infrared (FTIR) spectroscopy were used to evaluate coatings. Coatings demonstrated good efficacy against Staphylococcus aureus and Escherichia coli, with the latter showing the highest efficacy. In vitro bioactivity in simulated body fluid solution showed this material to be proficient for bone-like apatite formation on the implant surface. Electrochemical impedance spectroscopy was undertaken on intact coatings to examine the barrier properties of composites. We found that spin-coating at 4000 rpm could greatly increase the total resistance. After seeding with osteoblastic populations, Ce-HAP/Fe3O4 materials the adhesion and proliferation of cells. The heating capacity of the Ce-HAP/Fe3O4 film was optimal at 45 °C at 15 s at a frequency of 318 kHz. Osseointegration depends on many more parameters than hydroxyapatite production, so these coatings have significant potential for use in bone healing and bone-cancer therapy.
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Affiliation(s)
- B Priyadarshini
- Department of Chemistry, School of Advanced Sciences, VIT Vellore 632 014 Tamil Nadu India +91-416-224 3092 +91-416-2202464
- Dept of Metallurgical and Materials Engineering Indian Institute of Technology-Madras (IIT Madras) Chennai 600 036 India
| | - Arul Xavier Stango
- Department of Chemistry, Kalasalingam Academy of Research and Education Krishnankoil Srivilliputhur Tamil Nadu 626126 India
| | - M Balasubramanian
- Dept of Metallurgical and Materials Engineering Indian Institute of Technology-Madras (IIT Madras) Chennai 600 036 India
| | - U Vijayalakshmi
- Department of Chemistry, School of Advanced Sciences, VIT Vellore 632 014 Tamil Nadu India +91-416-224 3092 +91-416-2202464
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Deng L, Dhar BR. Phosphorus recovery from wastewater via calcium phosphate precipitation: A critical review of methods, progress, and insights. CHEMOSPHERE 2023; 330:138685. [PMID: 37060960 DOI: 10.1016/j.chemosphere.2023.138685] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 04/06/2023] [Accepted: 04/11/2023] [Indexed: 05/14/2023]
Abstract
Phosphorus (P) is one of the important elements for human, animal, and plant life. Due to the development of the circular economy in recent years, the recovery of P from wastewater has received more attention. Recovery of P from domestic, industrial, and agricultural wastewater in the form of calcium phosphate (CaP) by precipitation/crystallization process presents a low-cost and effective method. Recovered CaP could be used as P fertilizer and for other industrial applications. This review summarizes the effects of supersaturation, pH, seed materials, calcium (Ca) source, and wastewater composition, on the precipitation/crystallization process. The recovery efficiency and value proposition of recovered CaP were assessed. This in-depth analysis of the literature reports identified the process parameters that are worth further optimization. The review also provides perspectives on future research needs on expanding the application field of recovered CaP and finding other more economical and environmentally friendly Ca sources.
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Affiliation(s)
- Linyu Deng
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Civil and Environmental Engineering, University of Alberta, 116 Street NW, Edmonton, AB, T6G 1H9, Canada.
| | - Bipro Ranjan Dhar
- Civil and Environmental Engineering, University of Alberta, 116 Street NW, Edmonton, AB, T6G 1H9, Canada
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Cahyanto A, Liemidia M, Karlina E, Zakaria MN, Shariff KA, Sukotjo C, El-Ghannam A. Bioactive Carbonate Apatite Cement with Enhanced Compressive Strength via Incorporation of Silica Calcium Phosphate Composites and Calcium Hydroxide. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2071. [PMID: 36903186 PMCID: PMC10003863 DOI: 10.3390/ma16052071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
Carbonate apatite (CO3Ap) is a bioceramic material with excellent properties for bone and dentin regeneration. To enhance its mechanical strength and bioactivity, silica calcium phosphate composites (Si-CaP) and calcium hydroxide (Ca(OH)2) were added to CO3Ap cement. The aim of this study was to investigate the effect of Si-CaP and Ca(OH)2 on the mechanical properties in terms of the compressive strength and biological characteristics of CO3Ap cement, specifically the formation of an apatite layer and the exchange of Ca, P, and Si elements. Five groups were prepared by mixing CO3Ap powder consisting of dicalcium phosphate anhydrous and vaterite powder added by varying ratios of Si-CaP and Ca(OH)2 and 0.2 mol/L Na2HPO4 as a liquid. All groups underwent compressive strength testing, and the group with the highest strength was evaluated for bioactivity by soaking it in simulated body fluid (SBF) for one, seven, 14, and 21 days. The group that added 3% Si-CaP and 7% Ca(OH)2 had the highest compressive strength among the groups. SEM analysis revealed the formation of needle-like apatite crystals from the first day of SBF soaking, and EDS analysis indicated an increase in Ca, P, and Si elements. XRD and FTIR analyses confirmed the presence of apatite. This combination of additives improved the compressive strength and showed the good bioactivity performance of CO3Ap cement, making it a potential biomaterial for bone and dental engineering applications.
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Affiliation(s)
- Arief Cahyanto
- Department of Dental Materials Science and Technology, Faculty of Dentistry, Padjadjaran University, Jl. Raya Bandung Sumedang KM 21, Jatinangor 45363, Indonesia
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
- Biomaterials Technology Research Groups, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Michella Liemidia
- Faculty of Dentistry, Padjajaran University, Jl. Raya Bandung Sumedang KM 21, Jatinangor 45363, Indonesia
| | - Elin Karlina
- Department of Dental Materials Science and Technology, Faculty of Dentistry, Padjadjaran University, Jl. Raya Bandung Sumedang KM 21, Jatinangor 45363, Indonesia
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Myrna Nurlatifah Zakaria
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
- Department of Endodontology and Operative Dentistry, Faculty of Dentistry, Universitas Jenderal Achmad Yani, Jl. Terusan Jenderal Sudirman, Cimahi 40531, Indonesia
| | - Khairul Anuar Shariff
- School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang 14300, Malaysia
| | - Cortino Sukotjo
- Department of Restorative Dentistry, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Ahmed El-Ghannam
- Department of Mechanical Engineering and Engineering Science, University of North Carolina at Charlotte, Charlotte, NC 28223, USA
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11
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Anada R, Hara ES, Nagaoka N, Okada M, Kamioka H, Matsumoto T. Important roles of odontoblast membrane phospholipids in early dentin mineralization. J Mater Chem B 2023; 11:657-666. [PMID: 36541228 DOI: 10.1039/d2tb02351b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The objective of this study was to first identify the timing and location of early mineralization of mouse first molar, and subsequently, to characterize the nucleation site for mineral formation in dentin from a materials science viewpoint and evaluate the effect of environmental cues (pH) affecting early dentin formation. Early dentin mineralization in mouse first molars began in the buccal central cusp on post-natal day 0 (P0), and was first hypothesized to involve collagen fibers. However, elemental mapping indicated the co-localization of phospholipids with collagen fibers in the early mineralization area. Co-localization of phosphatidylserine and annexin V, a functional protein that binds to plasma membrane phospholipids, indicated that phospholipids in the pre-dentin matrix were derived from the plasma membrane. A 3-dimensional in vitro biomimetic mineralization assay confirmed that phospholipids from the plasma membrane are critical factors initiating mineralization. Additionally, the direct measurement of the tooth germ pH, indicated it to be alkaline. The alkaline environment markedly enhanced the mineralization of cell membrane phospholipids. These results indicate that cell membrane phospholipids are nucleation sites for mineral formation, and could be important materials for bottom-up approaches aiming for rapid and more complex fabrication of dentin-like structures.
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Affiliation(s)
- Risa Anada
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan. .,Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Emilio Satoshi Hara
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
| | - Noriyuki Nagaoka
- Advanced Research Center for Oral and Craniofacial Sciences, Dental School, Okayama University, Okayama, Japan
| | - Masahiro Okada
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
| | - Hiroshi Kamioka
- Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Takuya Matsumoto
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
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12
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Ruiz-Aguilar C. Porous phosphate-based bioactive glass /β-TCP scaffold for tooth remineralization. PLoS One 2023; 18:e0284885. [PMID: 37200370 DOI: 10.1371/journal.pone.0284885] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 04/10/2023] [Indexed: 05/20/2023] Open
Abstract
The total or partial loss of teeth in the Mexican population due to periodontal diseases and trauma causes the development of other conditions, such as limitations in chewing and grinding food, pronunciation difficulties, and oral aesthetic alterations. In Mexico, oral diseases have been described to affect 87% of the population, according to reports by the health services, emphasizing that pregnant women and patients with diabetes mellitus have the highest risk of presenting with severe periodontal diseases or tooth loss, according to findings by the Mexican Health Department's Specific Action Program for the prevention, detection, and control of oral health problems (2013-2018). There was a 92.6% prevalence of dental caries in the population examined, and the prevalence of periodontal problems, mainly in 40-year-olds, was above 95%. The objective of this investigation was to manufacture and characterize porous 3D scaffolds with innovative chemical compositions, using phosphate-based bioactive glass, beta-phase tricalcium phosphate, and zirconium oxide, in variable quantities. The scaffold manufacturing method combined two techniques: powder metallurgy and polymer foaming. The results obtained in this research were promising since the mechanically tested scaffolds showed values of compressive strength and modulus of elasticity in the range of human trabecular bone. On the other hand, the in vitro evaluation of the samples immersed in artificial saliva at days 7 and 14 presented the calcium/phosphorus ratio = 1.6; this value is identical to the reported state-of-the-art figure, corresponding to the mineral phase of the bones and teeth. Likewise, the precipitation of the flower-like morphology was observed on the entire surface of the scaffold without zirconia; this morphology is characteristic of hydroxyapatite. On the other hand, the samples with 0.5 and 1.0 mol% zirconia showed less hydroxyapatite formation, with a direct correlation between scaffold dissolution and the amount of zirconia added.
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Affiliation(s)
- Criseida Ruiz-Aguilar
- Escuela Nacional de Estudios Superiores Unidad Juriquilla, Universidad Nacional Autónoma de México, Juriquilla, Queretaro, México
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13
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Barreiro BOB, Koth VS, Sesterheim P, Salum FG, Rübensam G, Augustin AH, Cherubini K. Autogenous dentin combined with mesenchymal stromal cells as an alternative alveolar bone graft: an in vivo study. Clin Oral Investig 2022; 27:1907-1922. [PMID: 36574044 DOI: 10.1007/s00784-022-04840-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Considering the chemical and structural properties of dentin, this study was aimed at evaluating the effect of dentin matrix alone or combined with mesenchymal stromal cells (MSC) on postextraction alveolar bone regeneration. MATERIAL AND METHODS Wistar rats were subjected to tooth extraction with osteotomy and allocated into groups according to the graft inserted: (1) Gelita-Spon®, (2) Bio-Oss®, (3) Dentin, (4) MSC, (5) Dentin/MSC, and (6) Control. Maxillae were analyzed by means of hematoxylin and eosin (H&E) staining, immunohistochemical (IHC) analysis, microcomputed tomography (micro-CT), and scanning electron microscopy (SEM). Serum levels of calcium and phosphorus were quantified. RESULTS The Bio-Oss group showed less bone than Gelita-Spon and Dentin/MSC; no other significant differences were seen in H&E analysis. The Bio-Oss group showed higher expression of collagen type I compared to the Dentin and Dentin/MSC groups and also higher osteocalcin expression than the Dentin/MSC group. There was a tendency of higher expression of osteopontin in the MSC, Dentin, and Dentin/MSC groups and higher VEGF in the MSC group. On micro-CT analysis, the Bio-Oss and the Dentin/MSC groups exhibited greater bone volume than the Control. Serum calcium and phosphorus levels did not significantly differ between the groups. SEM analysis depicted particles of Bio-Oss and dentin in the respective groups, as well as significant cellularity in the MSC group. CONCLUSION Autogenous nondemineralized dentin is an alternative for alveolar bone grafting, which can be improved by combination with MSC. CLINICAL RELEVANCE This work provides support for the clinical applicability of dentin graft alone or combined with MSC.
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Affiliation(s)
- Bernardo Ottoni Braga Barreiro
- School of Health and Life Sciences, Post-Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Valesca Sander Koth
- School of Health and Life Sciences, Post-Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Patrícia Sesterheim
- Experimental Cardiology Center, Institute of Cardiology of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Fernanda Gonçalves Salum
- School of Health and Life Sciences, Post-Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Gabriel Rübensam
- Toxicology and Pharmacology Research Center (INTOX), School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Adolpho Herbert Augustin
- Institute of Petroleum and Natural Resources (IPR), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Karen Cherubini
- School of Health and Life Sciences, Post-Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
- Serviço de Estomatologia, Hospital São Lucas PUCRS, Av. Ipiranga, 6690 Sala 231, Bairro Jardim Botânico, CEP: 90.610-000, Porto Alegre, RS, Brazil.
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14
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Lyutova E, Tkachuk VA, Selyunina LA, Borilo LP, Fedorishin DA, Chen YW. Facile Synthesis of TiO 2-SiO 2-P 2O 5/CaO/ZnO with a Core-Shell Structure for Bone Implantation. ACS OMEGA 2022; 7:46564-46572. [PMID: 36570249 PMCID: PMC9773928 DOI: 10.1021/acsomega.2c05398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
A facile synthesis method was developed to synthesize TiO2-SiO2-P2O5/CaO or TiO2-SiO2-P2O5/ZnO with a core-shell structure. The carboxylic cation exchanger Tokem-250 has a high selectivity for Ca2+/Zn2+ ions and was used in this study. The framework of the material in the shell was TiO2-SiO2-P2O5, and the inner part was filled with CaO (sample TiO2-SiO2/CaO) or ZnO (sample TiO2-SiO2-P2O5/ZnO). A stepwise heat treatment (drying in a drying oven at 60 °C for 30 min, then annealing in a muffle furnace for 30 min at 150, 250, and 350 °C, at 600 °C for 6 h, and at 800 °C for 1 h) was needed to obtain a homogeneous material. The poly(vinyl alcohol) was used as a binding additive. The obtained composites were characterized by a regular structure and highly developed surface. The samples exhibit bioactive properties in the simulated body fluid (SBF) solution, since the surface contains active centers (Si4+, Ti4+) which contribute to mineralization and precipitation of the calcium-phosphate compounds on the surface from biological media. The TiO2-SiO2-P2O5/CaO-PVA samples did not exceed acceptable hemolysis levels for medical materials.
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Affiliation(s)
| | - Valeriya A. Tkachuk
- National
Research Tomsk State University, 36 Lenina Avenue, Tomsk634050, Russia
| | - Liliya A. Selyunina
- National
Research Tomsk State University, 36 Lenina Avenue, Tomsk634050, Russia
| | - Lyudmila P. Borilo
- National
Research Tomsk State University, 36 Lenina Avenue, Tomsk634050, Russia
| | | | - Yu-Wen Chen
- Department
of Chemical and Materials Engineering, National
Central University, Jhongli32001, Taiwan
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15
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Avramenko M, Nakashima K, Kawasaki S. State-of-the-Art Review on Engineering Uses of Calcium Phosphate Compounds: An Eco-Friendly Approach for Soil Improvement. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6878. [PMID: 36234219 PMCID: PMC9572721 DOI: 10.3390/ma15196878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/21/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
Greenhouse gas emissions are a critical problem nowadays. The cement manufacturing sector alone accounts for 8% of all human-generated emissions, and as the world's population grows and globalization intensifies, this sector will require significantly more resources. In order to fulfill the need of geomaterials for construction and to reduce carbon dioxide emissions into the atmosphere, conventional approaches to soil reinforcement need to be reconsidered. Calcium phosphate compounds (CPCs) are new materials that have only recently found their place in the soil reinforcement field. Its eco-friendly, non-toxic, reaction pathway is highly dependent on the pH of the medium and the concentration of components inside the solution. CPCs has advantages over the two most common environmental methods of soil reinforcement, microbial-induced carbonate precipitation (MICP) and enzyme induced carbonate precipitation (EICP); with CPCs, the ammonium problem can be neutralized and thus allowed to be applied in the field. In this review paper, the advantages and disadvantages of the engineering uses of CPCs for soil improvement have been discussed. Additionally, the process of how CPCs perform has been studied and an analysis of existing studies related to soil reinforcement by CPC implementation was conducted.
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Affiliation(s)
- Maksym Avramenko
- Division of Sustainable Resources Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Kazunori Nakashima
- Division of Sustainable Resources Engineering, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Satoru Kawasaki
- Division of Sustainable Resources Engineering, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
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16
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Almulhim KS, Syed MR, Alqahtani N, Alamoudi M, Khan M, Ahmed SZ, Khan AS. Bioactive Inorganic Materials for Dental Applications: A Narrative Review. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6864. [PMID: 36234205 PMCID: PMC9573037 DOI: 10.3390/ma15196864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/22/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Over time, much attention has been given to the use of bioceramics for biomedical applications; however, the recent trend has been gaining traction to apply these materials for dental restorations. The bioceramics (mainly bioactive) are exceptionally biocompatible and possess excellent bioactive and biological properties due to their similar chemical composition to human hard tissues. However, concern has been noticed related to their mechanical properties. All dental materials based on bioactive materials must be biocompatible, long-lasting, mechanically strong enough to bear the masticatory and functional load, wear-resistant, easily manipulated, and implanted. This review article presents the basic structure, properties, and dental applications of different bioactive materials i.e., amorphous calcium phosphate, hydroxyapatite, tri-calcium phosphate, mono-calcium phosphate, calcium silicate, and bioactive glass. The advantageous properties and limitations of these materials are also discussed. In the end, future directions and proposals are given to improve the physical and mechanical properties of bioactive materials-based dental materials.
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Affiliation(s)
- Khalid S. Almulhim
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Mariam Raza Syed
- UWA Dental School, The University of Western Australia, Crawley 6009, Australia
| | - Norah Alqahtani
- College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Marwah Alamoudi
- College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Maria Khan
- Department of Oral Biology, University of Health Sciences, Lahore 54600, Pakistan
| | - Syed Zubairuddin Ahmed
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Abdul Samad Khan
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
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17
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Biodegradable Bone Implants as a New Hope to Reduce Device-Associated Infections-A Systematic Review. BIOENGINEERING (BASEL, SWITZERLAND) 2022; 9:bioengineering9080409. [PMID: 36004934 PMCID: PMC9405200 DOI: 10.3390/bioengineering9080409] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 07/28/2022] [Accepted: 08/10/2022] [Indexed: 11/24/2022]
Abstract
Bone fractures often require fixation devices that frequently need to be surgically removed. These temporary implants and procedures leave the patient more prone to developing medical device-associated infections, and osteomyelitis associated with trauma is a challenging complication for orthopedists. In recent years, biodegradable materials have gained great importance as temporary medical implant devices, avoiding removal surgery. The purpose of this systematic review was to revise the literature regarding the use of biodegradable bone implants in fracture healing and its impact on the reduction of implant-associated infections. The systematic review followed the PRISMA guidelines and was conducted by searching published studies regarding the in vivo use of biodegradable bone fixation implants and its antibacterial activity. From a total of 667 references, 23 studies were included based on inclusion and exclusion criteria. Biodegradable orthopedic implants of Mg-Cu, Mg-Zn, and Zn-Ag have shown antibacterial activity, especially in reducing infection burden by MRSA strains in vivo osteomyelitis models. Their ability to prevent and tackle implant-associated infections and to gradually degrade inside the body reduces the need for a second surgery for implant removal, with expectable gains regarding patients’ comfort. Further in vivo studies are mandatory to evaluate the efficiency of these antibacterial biodegradable materials.
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18
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Influence of Concentration Levels of β-Tricalcium Phosphate on the Physical Properties of a Dental Adhesive. NANOMATERIALS 2022; 12:nano12050853. [PMID: 35269344 PMCID: PMC8912458 DOI: 10.3390/nano12050853] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/27/2022] [Accepted: 02/18/2022] [Indexed: 12/22/2022]
Abstract
Our study assessed the influence of integrating 5% and 10% tricalcium phosphate (β-TCP-Ca3(PO4)2.) nanoparticles into a dental adhesive on the adhesive’s bonding. To evaluate the filler nanoparticles, scanning electron microscopy (SEM), Energy Dispersive X-Ray (EDX) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, and micro-Raman spectroscopy techniques were used. Shear Bond strength (SBS) testing, degree of conversion (DC) analysis, investigation of the adhesive–dentin interface, and biofilm experiments were conducted. The SEM micrographs revealed non-uniform agglomerates, while the EDX demonstrated the existence of oxygen ‘O’ (24.2%), phosphorus ‘P’ (17.4%) and calcium ‘Ca’ (60.1%) in the β-TCP nanoparticles. The FTIR and micro-Raman spectra indicated characteristic bands for β-TCP containing materials. The 10 wt.% β-TCP adhesive presented the highest SBS values (NTC-10 wt.% β-TCP: 33.55 ± 3.73 MPa, TC-10 wt.% β-TCP: 30.50 ± 3.25 MPa), followed by the 5 wt.% β-TCP adhesive (NTC-5 wt.% β-TCP: 32.37 ± 3.10 MPa, TC-5 wt.% β-TCP: 27.75 ± 3.15 MPa). Most of the detected failures after bond strength testing were adhesive in nature. The β-TCP adhesives demonstrated suitable dentin interaction by forming a hybrid layer (with few or no gaps) and resin tags. The β-TCP adhesives (10 wt.%) revealed lower DC values compared to control. The incorporation of 5 and 10 wt.% concentrations of β-TCP particles resulted in an increase in SBS values. A linear decline in DC values was witnessed when the nanoparticle concentration was increased. Further research focusing on exploring the influence of higher filler concentrations on adhesive’s properties is recommended.
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19
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3D Printed Poly(𝜀-caprolactone)/Hydroxyapatite Scaffolds for Bone Tissue Engineering: A Comparative Study on a Composite Preparation by Melt Blending or Solvent Casting Techniques and the Influence of Bioceramic Content on Scaffold Properties. Int J Mol Sci 2022; 23:ijms23042318. [PMID: 35216432 PMCID: PMC8880322 DOI: 10.3390/ijms23042318] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/08/2022] [Accepted: 02/16/2022] [Indexed: 02/01/2023] Open
Abstract
Bone tissue engineering has been developed in the past decades, with the engineering of bone substitutes on the vanguard of this regenerative approach. Polycaprolactone-based scaffolds are fairly applied for bone regeneration, and several composites have been incorporated so as to improve the scaffolds’ mechanical properties and tissue in-growth. In this study, hydroxyapatite is incorporated on polycaprolactone-based scaffolds at two different proportions, 80:20 and 60:40. Scaffolds are produced with two different blending methods, solvent casting and melt blending. The prepared composites are 3D printed through an extrusion-based technique and further investigated with regard to their chemical, thermal, morphological, and mechanical characteristics. In vitro cytocompatibility and osteogenic differentiation was also assessed with human dental pulp stem/stromal cells. The results show the melt-blending-derived scaffolds to present more promising mechanical properties, along with the incorporation of hydroxyapatite. The latter is also related to an increase in osteogenic activity and promotion. Overall, this study suggests polycaprolactone/hydroxyapatite scaffolds to be promising candidates for bone tissue engineering, particularly when produced by the MB method.
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20
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Thijssen Q, Cornelis K, Alkaissy R, Locs J, Damme LV, Schaubroeck D, Willaert R, Snelling S, Mouthuy PA, Van Vlierberghe S. Tough Photo-Cross-Linked PCL-Hydroxyapatite Composites for Bone Tissue Engineering. Biomacromolecules 2022; 23:1366-1375. [PMID: 35147420 DOI: 10.1021/acs.biomac.1c01584] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Acrylate-based photo-cross-linked poly(ε-caprolactone) (PCL) tends to show low elongation and strength. Incorporation of osteo-inductive hydroxyapatite (HAp) further enhances this effect, which limits its applicability in bone tissue engineering. To overcome this, the thiol-ene click reaction is introduced for the first time in order to photo-cross-link PCL composites with 0, 10, 20, and 30 wt % HAp nanoparticles. It is demonstrated that the elongation at break and ultimate strength increase 10- and 2-fold, respectively, when the photopolymerization mechanism is shifted from a radical chain-growth (i.e., acrylate cross-linking) toward a radical step-growth polymerization (i.e., thiol-ene cross-linking). Additionally, it is illustrated that osteoblasts can attach to and proliferate on the surface of the photo-cross-linked PCL-HAp composites. Finally, the incorporation of HAp nanoparticles is shown to reduce the ALP activity of osteoblasts. Overall, thiol-ene cross-linked PCL-HAp composites can be considered as promising potential materials for bone tissue engineering.
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Affiliation(s)
- Quinten Thijssen
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - Kim Cornelis
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - Rand Alkaissy
- Nuffield department of Orthopaedics Rheumatology and Musculoskeletal Sciences (NDORMS), B4495, Headington, Oxford OX3 7LD, United Kingdom
| | - Janis Locs
- Rudolfs Cimdins Riga Biomaterials Innovation and Development Centre, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Pulka 3, Riga LV-1007, Latvia.,Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga LV-1658, Latvia
| | - Lana Van Damme
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - David Schaubroeck
- Centre for Microsystems Technology (CMST), imec and Ghent University, Technologiepark-Zwijnaarde 126, 9052 Ghent, Belgium
| | - Robin Willaert
- Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Sarah Snelling
- Nuffield department of Orthopaedics Rheumatology and Musculoskeletal Sciences (NDORMS), B4495, Headington, Oxford OX3 7LD, United Kingdom
| | - Pierre-Alexis Mouthuy
- Nuffield department of Orthopaedics Rheumatology and Musculoskeletal Sciences (NDORMS), B4495, Headington, Oxford OX3 7LD, United Kingdom
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
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21
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Zalite V, Lungevics J, Vecstaudza J, Stipniece L, Locs J. Nanosized calcium deficient hydroxyapatites for tooth enamel protection. J Biomed Mater Res B Appl Biomater 2021; 110:1354-1367. [PMID: 34965008 PMCID: PMC9306847 DOI: 10.1002/jbm.b.35005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 11/23/2022]
Abstract
Calcium phosphates (CaP) are extensively studied as additives to dental care products for tooth enamel protection against caries. However, it is not clear yet whether substituted CaP could provide better enamel protection. In this study we produced, characterized and tested in vitro substituted and co‐substituted calcium deficient hydroxyapatite (CDHAp) with Sr2+ and F− ions. X‐ray powder diffractometry, Fourier transformation infrared spectroscopy, scanning electron microscopy, energy‐dispersive X‐ray analysis, Brunauer–Emmett–Teller were used to characterize synthesized powders and also cytotoxicity was evaluated. pH = f(t) test was performed to estimate, weather synthesized CDHAp suspensions are able to increase pH of experimental media after acid addition. Synthesis products were incorporated into paste to perform in vitro remineralization on the bovine enamel. In addition to mentioned instrumental methods, profilometry was used for evaluation of remineralised enamel samples. The obtained results confirmed formation of CDHAp substituted with 1.5–1.6 wt% of fluoride and 7.4–7.8 wt% of strontium. pH = f(t) experiment pointed out that pH increased by approximately 0.3 within 10 min after acid addition for all CDHAp suspensions. A new layer of the corresponding CDHAp was formed on the enamel. Its thickness increased by 0.8 ± 0.1 μm per day and reached up to 5.8 μm after 7 days. Additionally, octa calcium phosphates were detected on the surface of control samples. In conclusion, we can assume that CDHAp substituted with Sr2+ and/or F− could be used as an effective additive to dental care products promoting formation of protecting layer on the enamel, but there was no significant difference among sample groups.
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Affiliation(s)
- Vita Zalite
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
| | - Janis Lungevics
- Department of Mechanical Engineering and Mechatronics, Faculty of Mechanical Engineering, Transport and Aeronautics, Riga Technical University, Riga, Latvia
| | - Jana Vecstaudza
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
| | - Liga Stipniece
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
| | - Janis Locs
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia.,Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga, Latvia
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22
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Abu Zeid S, Edrees HY, Mokeem Saleh AA, Alothmani OS. Physicochemical Properties of Two Generations of MTA-Based Root Canal Sealers. MATERIALS 2021; 14:ma14205911. [PMID: 34683503 PMCID: PMC8538924 DOI: 10.3390/ma14205911] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/23/2021] [Accepted: 09/29/2021] [Indexed: 12/12/2022]
Abstract
This study evaluated the physicochemical properties and the effect of solubility on the surface morphology and composition of the root canal sealers MTA-Bioseal, MTA-Fillapex, and Adseal. Discs (n = 10) of freshly mixed sealer were prepared and then analyzed by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDX). The discs were immersed for 1, 7, 14, and 28 days in deionized water. The solubility %; pH change of the solution; and released calcium, phosphate, and silicon were measured for each period. The flowability and film thickness were also evaluated. Changes in the surface morphology and composition after 28 days of immersion were evaluated by SEM/EDX. The data were statistically analyzed by one-way ANOVA at p < 0.05. The FTIR and EDX results revealed similar compositions of MTA-Bioseal and MTA-Fillapex, but with different concentrations. The two MTA-based sealers had higher solution alkalinity (pH > 10) than Adseal (pH ≈ 8.5). MTA-Fillapex exhibited the highest solubility % and the largest calcium and silicon ion release. MTA-Bioseal had the highest phosphate ion release. After 28 days, the sealer surfaces showed large micropores, with larger pores in MTA-Fillapex. Adseal had an intermediate flowability but exhibited the greatest film thickness. Finally, the highest solubility and largest amount of silicon release was exhibited by MTA-Fillapex, which might predispose it to the development of large micropores, compromising the apical seal of obturation.
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Affiliation(s)
- Sawsan Abu Zeid
- Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (H.Y.E.); (A.A.M.S.); (O.S.A.)
- Department of Endodontics, Faculty of Dentistry, Cairo University, Cairo 12613, Egypt
- Correspondence:
| | - Hadeel Yaseen Edrees
- Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (H.Y.E.); (A.A.M.S.); (O.S.A.)
| | - Abeer Abdulaziz Mokeem Saleh
- Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (H.Y.E.); (A.A.M.S.); (O.S.A.)
| | - Osama S. Alothmani
- Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (H.Y.E.); (A.A.M.S.); (O.S.A.)
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Alsahafi RA, Mitwalli HA, Balhaddad AA, Weir MD, Xu HHK, Melo MAS. Regenerating Craniofacial Dental Defects With Calcium Phosphate Cement Scaffolds: Current Status and Innovative Scope Review. FRONTIERS IN DENTAL MEDICINE 2021. [DOI: 10.3389/fdmed.2021.743065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The management and treatment of dental and craniofacial injuries have continued to evolve throughout the last several decades. Limitations with autograft, allograft, and synthetics created the need for more advanced approaches in tissue engineering. Calcium phosphate cements (CPC) are frequently used to repair bone defects. Since their discovery in the 1980s, extensive research has been conducted to improve their properties, and emerging evidence supports their increased application in bone tissue engineering. This review focuses on the up-to-date performance of calcium phosphate cement (CPC) scaffolds and upcoming promising dental and craniofacial bone regeneration strategies. First, we summarized the barriers encountered in CPC scaffold development. Second, we compiled the most up to date in vitro and in vivo literature. Then, we conducted a systematic search of scientific articles in MEDLINE and EMBASE to screen the related studies. Lastly, we revealed the current developments to effectively design CPC scaffolds and track the enhanced viability and therapeutic efficacy to overcome the current limitations and upcoming perspectives. Finally, we presented a timely and opportune review article focusing on the significant potential of CPC scaffolds for dental and craniofacial bone regeneration, which will be discussed thoroughly. CPC offers multiple capabilities that may be considered toward the oral defects, expecting a future outlook in nanotechnology design and performance.
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Application of β-Tricalcium Phosphate in Adhesive Dentin Bonding. Polymers (Basel) 2021; 13:polym13172855. [PMID: 34502894 PMCID: PMC8434446 DOI: 10.3390/polym13172855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 12/21/2022] Open
Abstract
The study aimed at synthesizing β-tricalcium phosphate (β-TCP) nanoparticles and comparing the mechanical properties and dentin interaction of two adhesives: experimental adhesive (EA) and EA with 5 wt.% β-TCP nanoparticles (β-TCP-5%). These filler nanoparticles were synthesized and then characterized with scanning electron microscopy (SEM) and micro-Raman spectroscopy. The β-TCP nanoparticles were incorporated in the adhesives to form two groups: gp-1: EA (control) and gp-2: β-TCP-5%. These adhesives were characterized by SEM, energy-dispersive X-ray (EDX) spectroscopy and were also assessed for their micro-tensile bond strength (μTBS) with (TC) and without thermocycling (NTC). Fourier Transform Infrared (FTIR) spectroscopy was performed to evaluate the degree of conversion (DC) of two adhesives. The β-TCP filler was seen as irregularly shaped agglomerates on SEM. The micro-Raman spectra revealed characteristic peaks associated with β-TCP nanoparticles. Both adhesives presented suitable dentin interaction, which was demonstrated by the formation of resin tags of variable depths. The EDX analysis verified the existence of calcium (Ca) and phosphate (P) for the β-TCP-5% group. The greatest μTBS values were shown by β-TCP-5% group samples when they were non-thermocycled (NTC) (β-TCP-5%-NTC: 34.11 ± 3.46) followed by the thermocycled (TC) samples of the same group (β-TCP-5%-TC: 30.38 ± 3.66), compared with the EA group. Although the DC presented by β-TCP-5% group was comparable to the EA group, it was still lower. The addition of β-TCP nanoparticles in the adhesive improved its μTBS and resulted in a suitable dentin interaction, seen in the form of hybrid layer and resin tag formation. Nonetheless, a decreased DC was observed for the β-TCP-5% adhesive. Future studies probing the effect of different filler concentrations on various properties of the adhesive are warranted.
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Nambiar S, Kumari M, Mathew S, Hegde S, Ramesh P, Shetty N. Effect of nano-hydroxyapatite with biomimetic analogues on the characteristics of partially demineralised dentin: An in-vitro study. Indian J Dent Res 2021; 32:385-389. [PMID: 35229780 DOI: 10.4103/ijdr.ijdr_705_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Research on dentin remineralisation protocols in particular 'biomimetic remineralisation' has gained huge momentum. Aim of this study was to evaluate if biomimetic analogs, incorporated in n-HAp, as an experimental formulation could aid in remineralization of artificial caries-like dentin and have anti-microbial effect on cariogenic bacteria, S mutans. Materials and Methodology An experimental paste was formulated using nano-hydroxyapatite (nHAp) with Non-Collagenous Protein analogs- polyacrylic acid (PAA), sodium tri-poly phosphate (STPP) with Simulated Body Fluid. Partially demineralised dentin specimens were divided into three groups (n=10) based on the remineralisation treatment as, Group A- n-HAp paste, Group B- n-HAp and NCP analogues and Group C (Control) - no treatment. At the end of the experimental period, the specimens were assessed using SEM-EDS analysis and Vickers microhardness testing. Further, the antimicrobial efficacy of the paste was assessed. Statistical Analysis The results were statistically analyzed using ANOVA with post-hoc Bonferroni test. Results Dentin specimens treated with the experimental paste revealed greater tubular occlusion, with intra tubular deposits and increased mineral content. Specimens treated with n-HAp alone had higher microhardness values and inhibitory effect on the cariogenic bacteria. Conclusion Non-Collagenous Protein analogs incorporated in n-HAp could remineralize the demineralised dentin and had antibacterial efficacy against S mutans.
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Affiliation(s)
- Sharanya Nambiar
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, Ramaiah University of Applied Sciences, Bangalore, Karnataka, India
| | - Mohini Kumari
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, Ramaiah University of Applied Sciences, Bangalore, Karnataka, India
| | - Sylvia Mathew
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, Ramaiah University of Applied Sciences, Bangalore, Karnataka, India
| | - Swaroop Hegde
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, Ramaiah University of Applied Sciences, Bangalore, Karnataka, India
| | - Poornima Ramesh
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, Ramaiah University of Applied Sciences, Bangalore, Karnataka, India
| | - Nithin Shetty
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, Ramaiah University of Applied Sciences, Bangalore, Karnataka, India
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Reconfigurable Dual Peptide Tethered Polymer System Offers a Synergistic Solution for Next Generation Dental Adhesives. Int J Mol Sci 2021; 22:ijms22126552. [PMID: 34207218 PMCID: PMC8235192 DOI: 10.3390/ijms22126552] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/07/2021] [Accepted: 06/09/2021] [Indexed: 01/29/2023] Open
Abstract
Resin-based composite materials have been widely used in restorative dental materials due to their aesthetic, mechanical, and physical properties. However, they still encounter clinical shortcomings mainly due to recurrent decay that develops at the composite-tooth interface. The low-viscosity adhesive that bonds the composite to the tooth is intended to seal this interface, but the adhesive seal is inherently defective and readily damaged by acids, enzymes, and oral fluids. Bacteria infiltrate the resulting gaps at the composite-tooth interface and bacterial by-products demineralize the tooth and erode the adhesive. These activities lead to wider and deeper gaps that provide an ideal environment for bacteria to proliferate. This complex degradation process mediated by several biological and environmental factors damages the tooth, destroys the adhesive seal, and ultimately, leads to failure of the composite restoration. This paper describes a co-tethered dual peptide-polymer system to address composite-tooth interface vulnerability. The adhesive system incorporates an antimicrobial peptide to inhibit bacterial attack and a hydroxyapatite-binding peptide to promote remineralization of damaged tooth structure. A designer spacer sequence was incorporated into each peptide sequence to not only provide a conjugation site for methacrylate (MA) monomer but also to retain active peptide conformations and enhance the display of the peptides in the material. The resulting MA-antimicrobial peptides and MA-remineralization peptides were copolymerized into dental adhesives formulations. The results on the adhesive system composed of co-tethered peptides demonstrated both strong metabolic inhibition of S. mutans and localized calcium phosphate remineralization. Overall, the result offers a reconfigurable and tunable peptide-polymer hybrid system as next-generation adhesives to address composite-tooth interface vulnerability.
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Injectable calcium phosphate and styrene–butadiene polymer-based root canal filling material. ASIAN BIOMED 2021. [DOI: 10.2478/abm-2021-0003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Background
Three-dimensional obturation of the root canal system is mandatory for a successful root canal treatment. Using a filling material with optimal properties may enable the root canal to be sealed well and therefore obtain the desired obturation.
Objective
To develop a new injectable paste endodontic filling material using calcium phosphate powder and a styrene–butadiene emulsion polymer.
Methods
The powder phase comprised an equivalent molar ratio of tetracalcium phosphate, anhydrous dicalcium phosphate, bismuth oxide, and calcium chloride. The liquid phase comprised a styrene–butadiene rubber emulsion in distilled water. The powder and the liquid were mixed to achieve a paste consistency. The paste was subjected to various tests including flow, setting time, dimensional change, solubility, and radiopacity to indicate its suitability as a root canal filling material. All these tests were conducted according to the American National Standards Institute–American Dental Association for endodontic sealing materials. After passing these tests, the paste was submitted to an injectability test.
Results
The material showed acceptable flowability with 19.1 ± 1.3 min setting time and 0.61 ± 0.16% shrinkage after 30 days of storage. We found the highest solubility at 24 h (6.62 ± 0.58%), then the solubility decreased to 1.09 ± 0.08% within 3 days. The material was more radiopaque than a 3 mm step on an aluminum wedge. Furthermore, the material showed good injectability of 93.67 ± 1.80%.
Conclusions
The calcium phosphate powder in styrene–butadiene emulsion met basic requirements for a root canal filling material with promising properties.
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Fardjahromi MA, Ejeian F, Razmjou A, Vesey G, Mukhopadhyay SC, Derakhshan A, Warkiani ME. Enhancing osteoregenerative potential of biphasic calcium phosphates by using bioinspired ZIF8 coating. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:111972. [PMID: 33812600 DOI: 10.1016/j.msec.2021.111972] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/31/2021] [Accepted: 02/10/2021] [Indexed: 10/22/2022]
Abstract
Biphasic calcium phosphate ceramics (BCPs) have been extensively used as a bone graft in dental clinics to reconstruct lost bone in the jaw and peri-implant hard tissue due to their good bone conduction and similar chemical structure to the teeth and bone. However, BCPs are not inherently osteoinductive and need additional modification and treatment to enhance their osteoinductivity. The present study aims to develop an innovative strategy to improve the osteoinductivity of BCPs using unique features of zeolitic imidazolate framework-8 (ZIF8). In this method, commercial BCPs (Osteon II) were pre-coated with a zeolitic imidazolate framework-8/polydopamine/polyethyleneimine (ZIF8/PDA/PEI) layer to form a uniform and compact thin film of ZIF8 on the surface of BCPs. The surface morphology and chemical structure of ZIF8 modified Osteon II (ZIF8-Osteon) were confirmed using various analytical techniques such as XRD, FTIR, SEM, and EDX. We evaluated the effect of ZIF8 coating on cell attachment, growth, and osteogenic differentiation of human adipose-derived mesenchymal stem cells (hADSCs). The results revealed that altering the surface chemistry and topography of Osteon II using ZIF8 can effectively promote cell attachment, proliferation, and bone regeneration in both in vitro and in vivo conditions. In conclusion, the method applied in this study is simple, low-cost, and time-efficient and can be used as a versatile approach for improving osteoinductivity and osteoconductivity of other types of alloplastic bone grafts.
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Affiliation(s)
- Mahsa Asadniaye Fardjahromi
- School of Engineering, Macquarie University, Sydney, NSW 2109, Australia; School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Fatemeh Ejeian
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan 73441-81746, Iran; Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Amir Razmjou
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan 73441-81746, Iran; Centre for Technology in Water and Wastewater, University of Technology Sydney, Sydney, NSW 2007, Australia; UNESCO Centre for Membrane Science and Technology, School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Graham Vesey
- Regeneus Ltd, Paddington, Sydney, NSW, 2021, Australia
| | | | - Amin Derakhshan
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Majid Ebrahimi Warkiani
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia; Institute of Molecular Medicine, Sechenov First Moscow State University, Moscow 119991, Russia.
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Kaka HB, Salman RF. Injectable calcium phosphate and styrene-butadiene polymer-based root canal filling material. ASIAN BIOMED 2021; 15:19-26. [PMID: 37551301 PMCID: PMC10388755 DOI: 10.1515/abm-2021-0003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
Background Three-dimensional obturation of the root canal system is mandatory for a successful root canal treatment. Using a filling material with optimal properties may enable the root canal to be sealed well and therefore obtain the desired obturation. Objective To develop a new injectable paste endodontic filling material using calcium phosphate powder and a styrene-butadiene emulsion polymer. Methods The powder phase comprised an equivalent molar ratio of tetracalcium phosphate, anhydrous dicalcium phosphate, bismuth oxide, and calcium chloride. The liquid phase comprised a styrene-butadiene rubber emulsion in distilled water. The powder and the liquid were mixed to achieve a paste consistency. The paste was subjected to various tests including flow, setting time, dimensional change, solubility, and radiopacity to indicate its suitability as a root canal filling material. All these tests were conducted according to the American National Standards Institute-American Dental Association for endodontic sealing materials. After passing these tests, the paste was submitted to an injectability test. Results The material showed acceptable flowability with 19.1 ± 1.3 min setting time and 0.61 ± 0.16% shrinkage after 30 days of storage. We found the highest solubility at 24 h (6.62 ± 0.58%), then the solubility decreased to 1.09 ± 0.08% within 3 days. The material was more radiopaque than a 3 mm step on an aluminum wedge. Furthermore, the material showed good injectability of 93.67 ± 1.80%. Conclusions The calcium phosphate powder in styrene-butadiene emulsion met basic requirements for a root canal filling material with promising properties.
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Affiliation(s)
- Hala B. Kaka
- Department of Conservative Dentistry, College of Dentistry, Hawler Medical University, Erbil44001, Iraq
| | - Raid F. Salman
- Department of Conservative Dentistry, Endodontics, College of Dentistry, Hawler Medical University, Erbil44001, Iraq
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30
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Chun YY, Yap ZL, Seet LF, Chan HH, Toh LZ, Chu SWL, Lee YS, Wong TT, Tan TTY. Positive-charge tuned gelatin hydrogel-siSPARC injectable for siRNA anti-scarring therapy in post glaucoma filtration surgery. Sci Rep 2021; 11:1470. [PMID: 33446775 PMCID: PMC7809290 DOI: 10.1038/s41598-020-80542-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 12/18/2020] [Indexed: 11/18/2022] Open
Abstract
Small interfering RNA (siRNA) therapy is a promising epigenetic silencing strategy. However, its widespread adoption has been severely impeded by its ineffective delivery into the cellular environment. Here, a biocompatible injectable gelatin-based hydrogel with positive-charge tuned surface charge is presented as an effective platform for siRNA protection and delivery. We demonstrate a two-step synthesis of a gelatin-tyramine (Gtn-Tyr) hydrogel with simultaneous charge tunability and crosslinking ability. We discuss how different physiochemical properties of the hydrogel interact with siSPARC (siRNA for secreted protein, acidic and rich in cysteine), and study the positive-charge tuned gelatin hydrogel as an effective delivery platform for siSPARC in anti-fibrotic treatment. Through in vitro studies using mouse tenon fibroblasts, the positive-charge tuned Gtn-Tyr hydrogel shows sustained siSPARC cellular internalization and effective SPARC silencing with excellent biocompatibility. Similarly, the same hydrogel platform delivering siSPARC in an in vivo assessment employing a rabbit model shows an effective reduction in subconjunctival scarring in post glaucoma filtration surgery, and is non-cytotoxic compared to a commonly used anti-scarring agent, mitomycin-C. Overall, the current siRNA delivery strategy involving the positive-charge tuned gelatin hydrogel shows effective delivery of gene silencing siSPARC for anti-fibrotic treatment. The current charge tunable hydrogel delivery system is simple to fabricate and highly scalable. We believe this delivery platform has strong translational potential for effective siRNA delivery and epigenetic silencing therapy.
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Affiliation(s)
- Yong Yao Chun
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Dr, Singapore, 637459, Singapore
- Ocular Imaging, Singapore Eye Research Institute, 20 College Road Discovery Tower Level 6, The Academia, Singapore, 169856, Singapore
| | - Zhu Li Yap
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 20 College Road Discovery Tower Level 6, The Academia, Singapore, 169856, Singapore
- Glaucoma Service, Singapore National Eye Centre, 11 Third Hospital Ave, Singapore, 168751, Singapore
| | - Li Fong Seet
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 20 College Road Discovery Tower Level 6, The Academia, Singapore, 169856, Singapore
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, 10 Medical Dr, Singapore, 117597, Singapore
- Duke-NUS Medical School, 8 College Rd, Singapore, 169857, Singapore
| | - Hiok Hong Chan
- Glaucoma Service, Singapore National Eye Centre, 11 Third Hospital Ave, Singapore, 168751, Singapore
| | - Li Zhen Toh
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 20 College Road Discovery Tower Level 6, The Academia, Singapore, 169856, Singapore
| | - Stephanie W L Chu
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 20 College Road Discovery Tower Level 6, The Academia, Singapore, 169856, Singapore
| | - Ying Shi Lee
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 20 College Road Discovery Tower Level 6, The Academia, Singapore, 169856, Singapore
- Glaucoma Service, Singapore National Eye Centre, 11 Third Hospital Ave, Singapore, 168751, Singapore
| | - Tina T Wong
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 20 College Road Discovery Tower Level 6, The Academia, Singapore, 169856, Singapore.
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, 10 Medical Dr, Singapore, 117597, Singapore.
- Duke-NUS Medical School, 8 College Rd, Singapore, 169857, Singapore.
- Glaucoma Service, Singapore National Eye Centre, 11 Third Hospital Ave, Singapore, 168751, Singapore.
- School of Materials Science and Engineering, Nanyang Technological University, 11 Faculty Ave, Singapore, 639977, Singapore.
| | - Timothy T Y Tan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Dr, Singapore, 637459, Singapore.
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Hodásová Ľ, Quintana R, Czuba U, del Valle LJ, Fargas G, Alemán C, Armelin E. Atmospheric pressure plasma liquid assisted deposition of polydopamine/acrylate copolymer on zirconia (Y-TZP) ceramics: a biocompatible and adherent nanofilm. RSC Adv 2021; 11:17360-17368. [PMID: 35479696 PMCID: PMC9033174 DOI: 10.1039/d1ra02054d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 05/06/2021] [Indexed: 11/28/2022] Open
Abstract
Polydopamine–ethylene glycol dimethacrylate copolymer is a biocompatible coating with cell adhesion promotion and antibiofilm properties. This copolymer has been successfully applied on metallic implants, such as stainless steel and titanium implants, using several deposition techniques (e.g. layer-by-layer, silane activation, chemical vapor deposition, or liquid-assisted plasma polymerization). However, its application in zirconia ceramic materials, which are widely used in dentistry and medicine, has never been described. In this work, polydopamine–ethylene glycol dimethacrylate copolymer has been deposited on ultra-smooth surfaces of yttria-stabilized zirconia discs (average roughness = 2.08 ± 0.08 nm) by using liquid-assisted atmospheric-pressure plasma-induced polymerization (LA-APPiP). After the polymerization, the nanometric coating (250 nm, measured by ellipsometry) had an average roughness of 79.85 ± 13.71 nm and water contact angle of 57.8 ± 2.2 degrees, consistent with the highly hydrophilic nature of the biocompatible copolymer, if compared to the pristine zirconia (72.7 ± 2.0 degrees). The successful covalent bonding of the copolymer with the zirconia surface, thanks to the previous activation of the substrate with oxygen plasma, was proved by X-ray photoelectron spectroscopy (XPS). The polymer composition has been investigated by XPS and Raman spectroscopies. The LA-APPiP technique has been proved to be an excellent method to produce homogenous films without the need to employ solvents and further purification steps. The new copolymer film allows the uniform growth of human osteoblast-like MG-63 cells, after 7 days of cell culture, as observed by fluorescence microscopy. Polydopamine–ethylene glycol dimethacrylate copolymer is a biocompatible coating with cell adhesion promotion and antibiofilm properties.![]()
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Affiliation(s)
- Ľudmila Hodásová
- Departament d'Enginyeria Química
- Universitat Politècnica de Catalunya
- Campus Diagonal Besòs (EEBE)
- Barcelona
- Spain
| | - Robert Quintana
- Luxembourg Institute of Science and Technology (LIST)
- Materials Research and Technology Department
- Luxembourg
| | - Urszula Czuba
- Luxembourg Institute of Science and Technology (LIST)
- Materials Research and Technology Department
- Luxembourg
| | - Luis J. del Valle
- Departament d'Enginyeria Química
- Universitat Politècnica de Catalunya
- Campus Diagonal Besòs (EEBE)
- Barcelona
- Spain
| | - Gemma Fargas
- Departament de Ciència i Enginyeria de Materials
- Universitat Politècnica de Catalunya
- Campus Diagonal Besòs – EEBE
- Barcelona
- Spain
| | - Carlos Alemán
- Departament d'Enginyeria Química
- Universitat Politècnica de Catalunya
- Campus Diagonal Besòs (EEBE)
- Barcelona
- Spain
| | - Elaine Armelin
- Departament d'Enginyeria Química
- Universitat Politècnica de Catalunya
- Campus Diagonal Besòs (EEBE)
- Barcelona
- Spain
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Paknahad A, Goudarzi M, Kucko NW, Leeuwenburgh SC, Sluys LJ. Calcium phosphate cement reinforced with poly (vinyl alcohol) fibers: An experimental and numerical failure analysis. Acta Biomater 2021; 119:458-471. [PMID: 33164819 DOI: 10.1016/j.actbio.2020.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 10/23/2022]
Abstract
Calcium phosphate cements (CPCs) have been widely used during the past decades as biocompatible bone substitution in maxillofacial, oral and orthopedic surgery. CPCs are injectable and are chemically resemblant to the mineral phase of native bone. Nevertheless, their low fracture toughness and high brittleness reduce their clinical applicability to weakly loaded bones. Reinforcement of CPC matrix with polymeric fibers can overcome these mechanical drawbacks and significantly enhance their toughness and strength. Such fiber-reinforced calcium phosphate cements (FRCPCs) have the potential to act as advanced bone substitute in load-bearing anatomical sites. This work achieves integrated experimental and numerical characterization of the mechanical properties of FRCPCs under bending and tensile loading. To this end, a 3-D numerical gradient enhanced damage model combined with a dimensionally-reduced fiber model are employed to develop a computational model for material characterization and to simulate the failure process of fiber-reinforced CPC matrix based on experimental data. In addition, an advanced interfacial constitutive law, derived from micromechanical pull-out tests, is used to represent the interaction between the polymeric fiber and CPC matrix. The presented computational model is successfully validated with the experimental results and offers a firm basis for further investigations on the development of numerical and experimental analysis of fiber-reinforced bone cements.
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33
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Waiyawat J, Kanjana P, Kongsema M, Akkarachaneeyakorn K. Tooth desensitizing calcium phosphate composite gelatin-based gel. J BIOACT COMPAT POL 2020. [DOI: 10.1177/0883911520960502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Dentine sensitivity is a dental problem common in individuals aged between 20 and 50 years. The most effective treatment method involves occluding the exposed dental tubules. This study focused on the synthesis of calcium phosphate nanoparticles in the form of gel to use as a proof of concept for home-treatment of sensitive teeth. In this study, calcium phosphate nanoparticles were prepared using emulsion method, in which oleic fatty acid was employed as an external phase, and sodium dodecyl sulphate (SDS) was used as a surfactant to form water-in-oil nanodroplets. Finally, in order to facilitate gel formation, the gelatin solution was introduced at the final step. The amount of gelatin varied from 5 to 15 percent by weight, which was found to have an effect on the gels’ properties and the size of calcium phosphate nanoparticles embedded in gel. Based on the characterization, the calcium phosphate nanoparticles were spherical in shape, though the size decreased as the amount of gelatin increased. The gel embedding smallest nanoparticle, that is, gel-15%G, was successfully proven to be non-toxic and able to fully occlude the dentine tubules only after overnight application. According to acid challenge, the occluded materials can resist to acid solution via redissolvation and reprecipitaion process.
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Affiliation(s)
- Jutharat Waiyawat
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Pimchanok Kanjana
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Mesayamas Kongsema
- Department of Zoology, Faculty of Science, Kasetsart University, Bangkok, Thailand
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Zhu J, Sun HH, Wo J, Xu FH, Lu WQ, Deng B, Zhu YY, Yuan F. Duration of electrochemical deposition affects the morphology of hydroxyapatite coatings on 3D-printed titanium scaffold as well as the functions of adhered MC3T3-E1 cells. J Orthop Sci 2020; 25:708-714. [PMID: 31607516 DOI: 10.1016/j.jos.2019.09.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 09/04/2019] [Accepted: 09/11/2019] [Indexed: 12/25/2022]
Abstract
BACKGROUND The use of 3D-printed scaffolds in repairing bone defects remains unexplored. We aimed to determine whether the duration of electrochemical deposition (ECD) affects the properties of hydroxyapatite (HA) coatings on 3D-printed titanium (TI) scaffolds as well as the corresponding phenotype of MC3T3-E1 cells seeded on these surfaces. METHODS Five groups of HA-coated TI scaffolds were produced using different durations of ECD (0, 5, 10, 20, and 30 min) and examined under scanning electron microscopy (SEM). MC3T3-E1 cell adhesion to the HA-coated scaffolds and subsequent proliferation and viability were assessed using SEM, DAPI staining, EdU staining, and Alamar Blue assay, respectively. MC3T3-E1 cell expression of osteogenic genes was analyzed by fluorescence RT-PCR. RESULTS On SEM, longer ECD durations resulted in more compact HA crystals of differing morphology coated onto the TI scaffolds. MC3T3-E1 cell adhesion differed among the five groups (p < 0.05), with the largest number of cells adhered to the scaffolds prepared with 30 min of ECD, followed by the group prepared with 20 min of ECD. However, the ECD duration of 20 min was associated with the highest cell viability and proliferation rate (both p < 0.05) as well as the highest mRNA expression levels of alkaline phosphatase, collagen I, osteocalcin and runt-related transcription factor 2 among the five groups (p < 0.05). CONCLUSIONS In the fabrication of HA-coated 3D printed TI scaffolds, an ECD duration of 20 min resulted in scaffolds that best promoted MC3T3-E1 cell viability, proliferation and osteogenic gene expression.
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Affiliation(s)
- Jun Zhu
- Department of Orthopedics, The Affiliated Hospital of Xuzhou Medical University, Xuzhou Medical University, China
| | - Hui-Hui Sun
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Institution of Orthopedics, Northern People's Hospital of Jiangsu Province, Yangzhou, China
| | - Jin Wo
- Department of Orthopedics, The Affiliated Hospital of Xuzhou Medical University, Xuzhou Medical University, China
| | - Fei-Hu Xu
- Department of Orthopedics, The Affiliated Hospital of Xuzhou Medical University, Xuzhou Medical University, China
| | - Wei-Qiang Lu
- Department of Orthopedics, The Affiliated Hospital of Xuzhou Medical University, Xuzhou Medical University, China
| | - Bin Deng
- Department of Orthopedics, The Affiliated Hospital of Xuzhou Medical University, Xuzhou Medical University, China
| | - Yuan-Yuan Zhu
- Department of Gynecology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou Medical University, China
| | - Feng Yuan
- Department of Orthopedics, The Affiliated Hospital of Xuzhou Medical University, Xuzhou Medical University, China.
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Girija K, Kavitha M. Comparative evaluation of platelet-rich fibrin, platelet-rich fibrin + 50 wt% nanohydroxyapatite, platelet-rich fibrin + 50 wt% dentin chips on odontoblastic differentiation - An in vitro study-part 2. J Conserv Dent 2020; 23:354-358. [PMID: 33623235 PMCID: PMC7883785 DOI: 10.4103/jcd.jcd_3_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 06/27/2020] [Accepted: 07/16/2020] [Indexed: 12/01/2022] Open
Abstract
AIM The purpose of this study was to investigate the effects of platelet-rich fibrin (PRF) modified with bioactive radiopacifiers-nanohydroxyapatite (nHA) and dentin chips (DC) on odontoblastic differentiation in human dental pulp cells (HDPCs). SUBJECTS AND METHODS PRF was modified with 50wt% of nHA (G bone-SHAG31, Surgiwear Company) and 50 wt% of DC. HDPSCs differentiation and mineralization by the groups ([Group A - Control (Dimethyl sulfoxide), Group B - PRF, Group C - PRF + nHA, Group D - PRF + DC]) were assessed. ELISA was done to quantify the interleukin (IL)-6 and IL-8 cytokine expression. The odontoblastic differentiation was determined by the expression of odontogenesis-related genes and the extent of mineralization using alizarin red S staining. STATISTICAL ANALYSIS USED One-way ANOVA with post hoc Tukey-honestly significant difference tests were applied to assess the significance among various groups. RESULTS The level of inflammatory cytokines (IL-6 and IL-8) expression by Group D (PRF + 50 wt% DC) was higher compared to Group B (PRF) and Group C (PRF + 50 wt% DC). Group C (PRF + 50 wt% nHA) induced more mineralization nodules compared to other groups. The integrated density value for the DSPP and DMP-1 protein expression by Group C (PRF + 50 wt% nHA) and Group D (PRF + 50 wt% DC) was higher compared to Group B (PRF). CONCLUSIONS The results suggest that the addition of bioactive radiopacifiers into PRF has a synergistic effect on the stimulation of odontoblastic differentiation of HDPCs, hence inducing mineralization.
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Affiliation(s)
- Kottuppallil Girija
- Department of Conservative Dentistry and Endodontics, Tamil Nadu Government Dental College and Hospital, Tamil Nadu Dr. M.G.R Medical University, Chennai, Tamil Nadu, India
| | - Mahendran Kavitha
- Department of Conservative Dentistry and Endodontics, Tamil Nadu Government Dental College and Hospital, Tamil Nadu Dr. M.G.R Medical University, Chennai, Tamil Nadu, India
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Golovanova OA. Biomimetic Synthesis of Carbonate Hydroxyapatite in the Presence of Chondroitin Sulfate. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023620030043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Paknahad A, Kucko NW, Leeuwenburgh SC, Sluys LJ. Experimental and numerical analysis on bending and tensile failure behavior of calcium phosphate cements. J Mech Behav Biomed Mater 2020; 103:103565. [DOI: 10.1016/j.jmbbm.2019.103565] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/26/2019] [Accepted: 11/27/2019] [Indexed: 10/25/2022]
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Jose G, Shalumon K, Liao HT, Kuo CY, Chen JP. Preparation and Characterization of Surface Heat Sintered Nanohydroxyapatite and Nanowhitlockite Embedded Poly (Lactic-co-glycolic Acid) Microsphere Bone Graft Scaffolds: In Vitro and in Vivo Studies. Int J Mol Sci 2020; 21:E528. [PMID: 31947689 PMCID: PMC7013730 DOI: 10.3390/ijms21020528] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 12/12/2022] Open
Abstract
In the context of using bone graft materials to restore and improve the function of damaged bone tissues, macroporous biodegradable composite bone graft scaffolds have osteoinductive properties that allow them to provide a suitable environment for bone regeneration. Hydroxyapatite (HAP) and whitlockite (WLKT) are the two major components of hard tissues such as bone and teeth. Because of their biocompatibility and osteoinductivity, we synthesized HAP (nHAP) and WLKT nanoparticles (nWLKT) by using the chemical precipitation method. The nanoparticles were separately incorporated within poly (lactic-co-glycolic acid) (PLGA) microspheres. Following this, the composite microspheres were converted to macroporous bone grafts with sufficient mechanical strength in pin or screw shape through surface sintering. We characterized physico-chemical and mechanical properties of the nanoparticles and composites. The biocompatibility of the grafts was further tested through in vitro cell adhesion and proliferation studies using rabbit bone marrow stem cells. The ability to promote osteogenic differentiation was tested through alkaline phosphate activity and immunofluorescence staining of bone marker proteins. For in vivo study, the bone pins were implanted in tibia bone defects in rabbits to compare the bone regeneration ability though H&E, Masson's trichrome and immunohistochemical staining. The results revealed similar physico-chemical characteristics and cellular response of PLGA/nHAP and PLGA/nWLKT scaffolds but the latter is associated with higher osteogenic potential towards BMSCs, pointing out the possibility to use this ceramic nanoparticle to prepare a sintered composite microsphere scaffold for potential bone grafts and tissue engineered implants.
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Affiliation(s)
- Gils Jose
- Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 33302, Taiwan
| | - K.T. Shalumon
- Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 33302, Taiwan
| | - Han-Tsung Liao
- Department of Plastic and Reconstructive Surgery and Craniofacial Research Center, Chang Gung Memorial Hospital, Linkou, Chang Gung University School of Medicine, Kwei-San, Taoyuan 33305, Taiwan
| | - Chang-Yi Kuo
- Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 33302, Taiwan
| | - Jyh-Ping Chen
- Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 33302, Taiwan
- Department of Plastic and Reconstructive Surgery and Craniofacial Research Center, Chang Gung Memorial Hospital, Linkou, Chang Gung University School of Medicine, Kwei-San, Taoyuan 33305, Taiwan
- Research Center for Food and Cosmetic Safety, Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33302, Taiwan
- Department of Materials Engineering, Ming Chi University of Technology, Tai-Shan, New Taipei City 24301, Taiwan
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Yadav A, Chak RK, Khanna R. Comparative Evaluation of Mineral Trioxide Aggregate, Biodentine, and Calcium Phosphate Cement in Single Visit Apexification Procedure for Nonvital Immature Permanent Teeth: A Randomized Controlled Trial. Int J Clin Pediatr Dent 2020; 13:S1-S13. [PMID: 34434008 PMCID: PMC8359875 DOI: 10.5005/jp-journals-10005-1830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Aim and objective This study assesses the efficacy of mineral trioxide aggregate (MTA), biodentine, and calcium phosphate cement (CPC) as single visit apexification agents for nonvital immature permanent teeth, both clinically and radiographically. Materials and methods The study was conducted as a double-blinded randomized, controlled clinical trial after approval of the Institutional Ethical Committee of King George's Medical University, Lucknow, Uttar Pradesh, India, the approval letter (Ref. no. 81st ECM II B-Thesis/P24). A total of 60 patients in the age group of 6–15 years, fulfilling all the inclusion and exclusion criteria were enrolled for the study. Patients were randomly divided into three groups having 20 in each group. Results On the basis of present study, it can hence, be inferred that clinical success for MTA, biodentine and calcium phosphate cement in apexification was 100%. The radiographic outcomes of calcium phosphate cement showed better results as compared to MTA and biodentine at 9 months of follow-up periods. Conclusion These finding suggest that calcium phosphate cement can be used as a substitute for MTA and biodentine because of its comparable clinical and superior radiographic success. How to cite this article Yadav A, Chak RK, Khanna R. Comparative Evaluation of MTA, Biodentine and Calcium Phosphate Cement in Single Visit Apexification Procedure for Nonvital Immature Permanent Teeth: A Randomized Controlled Trial. Int J Clin Pediatr Dent 2020;13(S-1):S1–S13.
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Affiliation(s)
- Anjali Yadav
- Department of Paediatric and Preventive Dentistry, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Rakesh K Chak
- Department of Pedodontics, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Richa Khanna
- Department of Paediatric and Preventive Dentistry, King George's Medical University, Lucknow, Uttar Pradesh, India
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Hydroxyapatite-based cements induce different apatite formation in radicular dentin. Dent Mater 2020; 36:167-178. [DOI: 10.1016/j.dental.2019.11.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 11/04/2019] [Accepted: 11/15/2019] [Indexed: 01/22/2023]
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Uppala S, Parihar AS, Modipalle V, Manual L, Oommen VM, Karadiguddi P, Gupta P. Crestal bone loss around dental implants after implantation of Tricalcium phosphate and Platelet- Rich Plasma: A comparative study. J Family Med Prim Care 2020; 9:229-234. [PMID: 32110595 PMCID: PMC7014877 DOI: 10.4103/jfmpc.jfmpc_707_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/18/2019] [Accepted: 11/20/2019] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND AND AIMS Bone loss around dental implants is generally measured by monitoring changes in marginal bone level using radiographs. After the first year of implantation, an implant should have <0.2 mm annual loss of marginal bone level to satisfy the criteria of success. However, the success rate of dental implants depends on the amount of the crestal bone around the implants. The main aim of this study was to evaluate and compare the crestal bone loss around implants placed with particulate β-Tricalcium Phosphate Bone Graft and platelet concentrates. METHODS 50 individuals received hundred dental implants. Each individual received one dental implant in the edentulous site filled with β-Tricalcium Phosphate Bone Graft along (β-TCP) with Platelet- Rich Plasma (PRP) (Group A) and another in edentulous site filled only with β-Tricalcium Phosphate Bone Graft (Group B) in the posterior edentulous region. All the 100 implants were prosthetically loaded after a healing period of three months. Crestal bone loss was measured on mesial, distal, buccal and lingual side of each implant using periapical radiographs 3 months, 6 months and 9 months after implant placement. RESULTS The average crestal bone loss 9 months after the implants placement in Group A and Group B was 2.75 mm and 2.23 mm respectively, the value being statistically significant (P < 0.05). In both Group A and Group B, the average crestal bone loss was maximum on the lingual side followed by buccal, distal and mesial sides. CONCLUSION β-TCP is a promising biomaterial for clinical situations requiring bone augmentation. However, the addition of PRP results in decreased bone loss around the dental implants.
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Affiliation(s)
- Sravani Uppala
- Department of Conservative Dentistry and Endodontics, Drs. Sudha and Nageswara Rao Siddhartha Institute of Dental Sciences, Chinaoutpalli, Andhra Pradesh, India
| | - Anuj Singh Parihar
- Department of Periodontics, People's Dental Academy, Bhopal, Madhya Pradesh, India
| | - Varsha Modipalle
- Department of Pedodontics and Preventive Dentistry, C.K.S Teja Institute of Dental Sciences and Research, Renigunta, Tirupati, Andhra Pradesh, India
| | - Litto Manual
- Department of Prosthodontics, Al-Azhar Dental College, Thodupuzha, Kerala, India
| | - Vinni Mary Oommen
- Department of Prosthodontics, Al-Azhar Dental College, Thodupuzha, Kerala, India
| | - Pallavi Karadiguddi
- Department of Oral and Maxillofacial Surgery, SDM Dental College, Dharwad, Karnataka, India
| | - Parkhi Gupta
- Private Practitioner, Department of Oral and Maxillofacial Surgery, Chandigarh, India
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Aissa A, Meskini H, Debbabi M. Surface treatment of calcium hydroxyl and fluoroapatite by (NH4)6[P2W18O62]·14H2O polyoxometalate [P2W18]. RESULTS IN CHEMISTRY 2020. [DOI: 10.1016/j.rechem.2020.100048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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De Carvalho B, Rompen E, Lecloux G, Schupbach P, Dory E, Art JF, Lambert F. Effect of Sintering on In Vivo Biological Performance of Chemically Deproteinized Bovine Hydroxyapatite. MATERIALS 2019; 12:ma12233946. [PMID: 31795201 PMCID: PMC6926783 DOI: 10.3390/ma12233946] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/23/2019] [Accepted: 11/25/2019] [Indexed: 11/16/2022]
Abstract
The influence of the manufacturing process on physicochemical properties and biological performance of xenogenic biomaterials has been extensively studied, but its quantification on bone-to-material contact remains poorly investigated. The aim of this study was to investigate the effect of different heat treatments of an experimental chemically-deproteinized bovine hydroxyapatite in vivo in terms of new bone formation and osteoconductivity. Protein-free hydroxyapatite from bovine origin was produced under sub-critical conditions and then either sintered at 820 °C or 1200 °C. Structural and morphological properties were assessed by scanning electron microscopy (SEM), measurement of surface area and X-ray diffractometry (XRD). The materials were then implanted in standardized alveolar bone defects in minipigs and histomorphometric evaluations were performed using non-decalcified sections. Marked topographical differences were observed by SEM analysis. As the sintering temperature of the experimental material increased, the surface area significantly decreased while crystallite size increased. In vivo samples showed that the highly sintered BHA presented a significantly lower percentage of newly formed bone than the unheated one (p = 0.009). In addition, the percentage of bone-to-material contact (BMC) was significantly lowered in the highly sintered group when compared to the unsintered (p = 0.01) and 820 °C sintered (p = 0.02) groups. Non-sintered or sintered at 820 °C BHA seems to maintain a certain surface roughness allowing better bone regeneration and BMC. On the contrary, sintering of BHA at 1200 °C has an effect on its morphological and structural characteristics and significantly modify its biological performance (osteoconductivity) and crystallinity.
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Affiliation(s)
- Bruno De Carvalho
- Department of Periodontology and Oral Surgery, University of Liège, 4000 Liège, Belgium; (B.D.C.); (E.R.); (G.L.)
| | - Eric Rompen
- Department of Periodontology and Oral Surgery, University of Liège, 4000 Liège, Belgium; (B.D.C.); (E.R.); (G.L.)
| | - Geoffrey Lecloux
- Department of Periodontology and Oral Surgery, University of Liège, 4000 Liège, Belgium; (B.D.C.); (E.R.); (G.L.)
| | - Peter Schupbach
- Adjunct Professor, Augusta University, Augusta, GA 1120, USA;
| | - Emilie Dory
- Department of Biomaterials, WishBone SA, 4000, Liège, Belgium; (E.D.); (J.-F.A.)
| | - Jean-François Art
- Department of Biomaterials, WishBone SA, 4000, Liège, Belgium; (E.D.); (J.-F.A.)
| | - France Lambert
- Department of Periodontology and Oral Surgery, University of Liège, 4000 Liège, Belgium; (B.D.C.); (E.R.); (G.L.)
- Correspondence:
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Wang C, Xie J, Xiao X, Chen S, Wang Y. Development of Nontoxic Biodegradable Polyurethanes Based on Polyhydroxyalkanoate and L-lysine Diisocyanate with Improved Mechanical Properties as New Elastomers Scaffolds. Polymers (Basel) 2019; 11:E1927. [PMID: 31766759 PMCID: PMC6960902 DOI: 10.3390/polym11121927] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/20/2019] [Accepted: 11/21/2019] [Indexed: 01/04/2023] Open
Abstract
A nontoxic and biodegradable polyurethane was prepared, characterized, and evaluated for biomedical applications. Stretchable, biodegradable, and biocompatible polyurethanes (LPH) based on L-lysine diisocyanate (LDI) with poly(ethylene glycol) (PEG) and polyhydroxyalkanoates(PHA) of different molar ratios were synthesized. The chemical and physical characteristics of the LPH films are tunable, enabling the design of mechanically performance, hydrophilic, and biodegradable behavior. The LPH films have a Young's modulus, tensile strength, and elongation at break in the range of 3.07-25.61 MPa, 1.01-9.49 MPa, and 102-998%, respectively. The LPH films demonstrate different responses to a change of temperature from 4 to 37 °C, with the swelling ratio for the same sample at equilibrium varying from 184% to 151%. In vitro degradation tests show the same LPH film has completely different degradation morphologies in pH of 3, 7.4, and 11 phosphate buffered solution (PBS). In vitro cell tests show feasibility that some of the LPH films are suitable for culturing rat bone marrow stem cells (rBMSCs), for future soft-tissue regeneration. The results demonstrate the feasibility of the LPH scaffolds for many biomedical applications.
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Affiliation(s)
- Cai Wang
- Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen Key Laboratory of Polymer Science and Technology, Shenzhen Key Laboratory of Special Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China; (C.W.); (J.X.); (X.X.)
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jiapeng Xie
- Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen Key Laboratory of Polymer Science and Technology, Shenzhen Key Laboratory of Special Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China; (C.W.); (J.X.); (X.X.)
| | - Xuan Xiao
- Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen Key Laboratory of Polymer Science and Technology, Shenzhen Key Laboratory of Special Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China; (C.W.); (J.X.); (X.X.)
| | - Shaojun Chen
- Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen Key Laboratory of Polymer Science and Technology, Shenzhen Key Laboratory of Special Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China; (C.W.); (J.X.); (X.X.)
| | - Yiping Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
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Wint WY, Horiuchi N, Nozaki K, Nagai A, Yamashita K, Miyashin M. Plate-like hydroxyapatite synthesized from dodecanedioic acid enhances chondrogenic cell proliferation. Biomed Mater Eng 2019; 30:375-386. [PMID: 31476142 DOI: 10.3233/bme-191060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND The scaffold for head and neck reconstruction needs mechanical strength to maintain specific forms. Hydroxyapatite (HA) enhances the mechanical strength of hydrogel and is routinely used for cartilage regeneration. However, there is a demand for hydroxyapatite that controls chondrogenic cell behavior. OBJECTIVE Our aim was to regulate HA morphology through a hydrothermal process using organic acid and enhance chondrocyte proliferation and differentiation using shaped-regulated HA. METHODS HA was synthesized from dodecanedioic acid (DD:HA) and oleic acid (OA:HA) by a hydrothermal method and then coated onto glass plates. Surface properties of the samples were compared by various techniques. Surface roughness and contact angles were calculated. Proliferation and differentiation of chondrogenic cells were measured by MTT assays and Alcian Blue staining, respectively, after various incubation periods. RESULTS The morphological structures of DD:HA and OA:HA were different; however, the crystallinity and chemical structures were similar. Surface roughness and hydrophilic behavior were higher on DD:HA. DD:HA enhanced chondrogenic cell proliferation over time. The differentiation of ATDC5 cells was also increased on the DD:HA surface compared with those in other groups. CONCLUSIONS DD:HA enhanced cell viability to a greater extent than OA:HA did, indicating its excellent potential as an inorganic material compatible with chondrocyte regeneration.
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Affiliation(s)
- Wit Yee Wint
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan.,Department of Inorganic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Chiyoda-ku, Tokyo, Japan
| | - Naohiro Horiuchi
- Department of Inorganic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Chiyoda-ku, Tokyo, Japan
| | - Kosuke Nozaki
- Department of Fixed Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Akiko Nagai
- School of Dentistry, Aichi Gakuin University, Chikusa, Nagoya, Japan
| | - Kimihiro Yamashita
- Department of Inorganic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Chiyoda-ku, Tokyo, Japan
| | - Michiyo Miyashin
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
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Toledano M, Muñoz-Soto E, Aguilera FS, Osorio E, González-Rodríguez MP, Pérez-Álvarez MC, Toledano-Osorio M, Osorio R. A zinc oxide-modified hydroxyapatite-based cement favored sealing ability in endodontically treated teeth. J Dent 2019; 88:103162. [DOI: 10.1016/j.jdent.2019.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 06/10/2019] [Accepted: 06/27/2019] [Indexed: 01/16/2023] Open
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Tanwatana S, Kiewjurat A, Suttapreyasri S. Chemical and thermal deproteinization of human demineralized tooth matrix: Physicochemical characterization and osteoblast cell biocompatibility. J Biomater Appl 2019; 34:651-663. [PMID: 31364440 DOI: 10.1177/0885328219866039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Sureerat Tanwatana
- Department of Surgery, Faculty of Dentistry, Prince of Songkla University, Songkla, Thailand
| | - Ajchara Kiewjurat
- Department of Surgery, Faculty of Dentistry, Prince of Songkla University, Songkla, Thailand
| | - Srisurang Suttapreyasri
- Department of Surgery, Faculty of Dentistry, Prince of Songkla University, Songkla, Thailand
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Toledano M, Muñoz-Soto E, Aguilera FS, Osorio E, Pérez-Álvarez MC, García-Menocal JAD, Toledano-Osorio M, Osorio R. The mineralizing effect of zinc oxide-modified hydroxyapatite-based sealer on radicular dentin. Clin Oral Investig 2019; 24:285-299. [DOI: 10.1007/s00784-019-02938-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 05/02/2019] [Indexed: 11/30/2022]
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Zare M, Haghgoo R, Taleghani F, Niakan M. Antibacterial activity of β -Tricalcium phosphate containing nanosilver particles on periodontal Gram-negative pathogen. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2019; 120:545-548. [PMID: 30862537 DOI: 10.1016/j.jormas.2019.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 01/23/2019] [Accepted: 03/03/2019] [Indexed: 10/27/2022]
Abstract
INTRODUCCTION This research aimed to investigate the effect of antibacterial suspension containing TCP-β and nanosilver on these pathogens. MATERIAL AND METHODS Suspension containing concentrations of 4%, 2%, 1% and 0.1% was prepared with tricalcium phosphate and nanosilver. Two control suspensions for pure nanosilver and pure β-TCP were also prepared. The antibacterial activity of this suspension was investigated on two groups of bacteria, namely, P. intermedia and Aa in thioglycolate broth environment. Subsequently, the MIC was measured for each bacterium. RESULTS The suspension containing β-TCP and nanosilver produced an antibacterial effect on P. intermedia and Aa. The effect of this solution on P. intermedia was greater than that on A. actinomycetemcomitans. Moreover, the MICs (mg/mL) for P. intermedia and A. actinomycetemcomitans were 1% and 0.1%, respectively. CONCLUSION Based on the results of this study adding nanosilver particles to β-TCP resulted in the antibacterial property of this substance. Specifically, reduced the growth rate of Aa and P. intermedia. Nanosilver can be used to reduce the risk of infection during or after regenerative surgery.
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Affiliation(s)
- M Zare
- Shahed University, Tehran, Iran
| | - R Haghgoo
- Department of Pediatric Dentistry, Faculty of Dentistry, Shahed University, Tehran, Iran
| | - F Taleghani
- Department of Periodontology, Faculty of Dentistry, Shahed University, Tehran, Iran.
| | - M Niakan
- Department of Microbiology, Medical School, Shahed University, Tehran, Iran
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Iviglia G, Kargozar S, Baino F. Biomaterials, Current Strategies, and Novel Nano-Technological Approaches for Periodontal Regeneration. J Funct Biomater 2019; 10:E3. [PMID: 30609698 PMCID: PMC6463184 DOI: 10.3390/jfb10010003] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 12/07/2018] [Accepted: 12/17/2018] [Indexed: 12/14/2022] Open
Abstract
Periodontal diseases involve injuries to the supporting structures of the tooth and, if left untreated, can lead to the loss of the tooth. Regenerative periodontal therapies aim, ideally, at healing all the damaged periodontal tissues and represent a significant clinical and societal challenge for the current ageing population. This review provides a picture of the currently-used biomaterials for periodontal regeneration, including natural and synthetic polymers, bioceramics (e.g., calcium phosphates and bioactive glasses), and composites. Bioactive materials aim at promoting the regeneration of new healthy tissue. Polymers are often used as barrier materials in guided tissue regeneration strategies and are suitable both to exclude epithelial down-growth and to allow periodontal ligament and alveolar bone cells to repopulate the defect. The problems related to the barrier postoperative collapse can be solved by using a combination of polymeric membranes and grafting materials. Advantages and drawbacks associated with the incorporation of growth factors and nanomaterials in periodontal scaffolds are also discussed, along with the development of multifunctional and multilayer implants. Tissue-engineering strategies based on functionally-graded scaffolds are expected to play an ever-increasing role in the management of periodontal defects.
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Affiliation(s)
| | - Saeid Kargozar
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad 917794-8564, Iran.
| | - Francesco Baino
- Institute of Materials Physics and Engineering, Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy.
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