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Okpe PC, Folorunso O, Aigbodion VS, Obayi C. Hydroxyapatite synthesis and characterization from waste animal bones and natural sources for biomedical applications. J Biomed Mater Res B Appl Biomater 2024; 112:e35440. [PMID: 38923882 DOI: 10.1002/jbm.b.35440] [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] [Received: 02/02/2024] [Revised: 04/23/2024] [Accepted: 06/09/2024] [Indexed: 06/28/2024]
Abstract
Hydroxyapatites (HAps) synthesized from waste animal bones have recently gained attention due to their outstanding properties. This is because there is a need to fabricate scaffolds with desirable mechanical strength, ability to withstand high temperatures, and insoluble in solvents such as water, acetone, ethanol, and isopropyl alcohol. This study is an extensive summary of many articles on the routes of synthesis/preparation of HAp, and the optimum processing parameter, and the biomedical application areas, such as: drug administration, dental implants, bone tissue engineering, orthopedic implant coatings, and tissue regeneration/wound healing. A broad catalog of the synthesis methods (and combination methods), temperature/time, shape/size, and the calcium-to-phosphorous (Ca/P) value of diverse waste animal bone sources were reported. The alkaline hydrolysis method is proposed to be suitable for synthesizing HAp from natural sources due to the technique's ability to produce intrinsic HAp. The method is also preferred to the calcination method owing to the phase transformation that takes place at high temperatures during calcinations. However, calcinations aid in removing impurities and germs during heating at high temperatures. When compared to calcination technique, alkaline hydrolysis method results in crystalline HAp; the higher degree of crystallinity is disadvantageous to HAp bioactivity. In addition, the standardization and removal of impurities and contaminants, thorough biocompatibility to ensure clinical safety of the HAp to the human body, and improvement of the mechanical strength and toughness to match specific requirements for the various biomedical applications are the important areas for future studies.
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Affiliation(s)
- Promise Chinonso Okpe
- Department of Biomedical Engineering, Federal University of Allied Health Sciences, Enugu, Nigeria
- Department of Metallurgical and Materials Engineering, University of Nigeria, Nsukka, Nigeria
| | - Oladipo Folorunso
- Chemical, Metallurgical, and Materials Engineering Department, Tshwane University of Technology, Pretoria, South Africa
- French South African Institute of Technology (F'SATI)/Department of Electrical Engineering, Tshwane University of Technology, Pretoria, South Africa
| | - Victor Sunday Aigbodion
- Department of Metallurgical and Materials Engineering, University of Nigeria, Nsukka, Nigeria
- Faculty of Engineering and the Built Environment, University of Johannesburg, P. O. Box 534, Auckland Park, Johannesburg, South Africa
| | - Camillus Obayi
- Department of Metallurgical and Materials Engineering, University of Nigeria, Nsukka, Nigeria
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Pieroni S, Miceli B, Giboli L, Romano L, Azzi L, Farronato D. Efficacy of the Sausage Technique in Rebuilding the Crestal Buccal Bone Thickness: A Retrospective Analysis. Dent J (Basel) 2024; 12:180. [PMID: 38920881 PMCID: PMC11202426 DOI: 10.3390/dj12060180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 04/16/2024] [Accepted: 06/05/2024] [Indexed: 06/27/2024] Open
Abstract
The goal was to evaluate the efficacy of the sausage technique in reconstructing the crestal buccal bone thickness, focusing on the distribution shape of the regenerated volume. Ten implants were placed in five patients with Cawood-Howell class IV defects. A cone beam computed tomography (CBCT) was executed at T0 (before surgery). Guided bone regeneration (GBR) with the sausage technique utilized a resorbable collagen membrane, made of a 50% autologous bone and a 50% anorganic bovine bone matrix (ABBM) mixture. After 6 months, a CBCT (T1) was performed before implant placement. Using CBCT software, a plane parallel to the implant axis intersected perpendicular planes every 1.5 mm from the crest level. T0 and T1 CBCT sections were analyzed, yielding 140 measurements. Statistical analysis via SPSS revealed a significant increase in thickness (average 2.82 ± 1.79 mm). Maximum gains occurred at 4.5 mm from the coronal crest line (3.8 ± 1.51 mm). The GBR sausage technique was effective with minimal post-operative complications, yielding the biggest gain at the mid-ridge sagittal area. Within the analysis limitations, it can be assumed that the sausage technique is effective for horizontal GBR in the maxilla, but a lesser volume might be achieved at the crestal level because it seems to follow a bowed regeneration shape.
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Affiliation(s)
| | | | - Luca Giboli
- Implant Center for Edentulism and Jawbone Atrophies, Maxillofacial Surgery and Odontostomatology Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, University of Milan, 20122 Milan, Italy;
| | - Leonardo Romano
- School of Dentistry, Department of Medicine and Surgery, University of Insubria, 21100 Varese, Italy;
| | - Lorenzo Azzi
- Department of Medicine and Technological Innovation, Unit of Oral Medicine and Pathology, ASST dei Sette Laghi, 21100 Varese, Italy;
| | - Davide Farronato
- Department of Medicine and Technological Innovation, Research Center of Innovative Technology and Engineered Biomaterial, University of Insubria, 21100 Varese, Italy;
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Gwoździk M, Bramowicz M, Kulesza S. Analysis on the Morphology and Interface of the Phosphate Coating Prepared on X39Cr13 and S355J2 Steels. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2805. [PMID: 38930173 PMCID: PMC11204513 DOI: 10.3390/ma17122805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 05/29/2024] [Accepted: 06/05/2024] [Indexed: 06/28/2024]
Abstract
The article presents the results of the characterization of the geometric structure of the surface of unalloyed structural steel and alloyed (martensitic) steel subjected to chemical processing. Prior to phosphating, the samples were heat-treated. Both the surfaces and the cross-sections of the samples were investigated. Detailed studies were made using scanning electron microscopy (SEM), XRD, metallographic microscopy, chemical composition analysis and fractal analysis. The characteristics of the surface geometry involved such parameters as circularity, roundness, solidity, Feret's diameter, watershed diameter, fractal dimensions and corner frequencies, which were calculated by numerical processing of SEM images.
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Affiliation(s)
- Monika Gwoździk
- Faculty of Production Engineering and Materials Technology, Czestochowa University of Technology, Armii Krajowej Street 19, 42-201 Czestochowa, Poland
| | - Mirosław Bramowicz
- Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, Oczapowskiego 11, 10-719 Olsztyn, Poland; (M.B.); (S.K.)
| | - Sławomir Kulesza
- Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, Oczapowskiego 11, 10-719 Olsztyn, Poland; (M.B.); (S.K.)
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Kong HJ. Classification of dental implant systems using cloud-based deep learning algorithm: an experimental study. JOURNAL OF YEUNGNAM MEDICAL SCIENCE 2023; 40:S29-S36. [PMID: 37491843 DOI: 10.12701/jyms.2023.00465] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 06/19/2023] [Indexed: 07/27/2023]
Abstract
BACKGROUND This study aimed to evaluate the accuracy and clinical usability of implant system classification using automated machine learning on a Google Cloud platform. METHODS Four dental implant systems were selected: Osstem TSIII, Osstem USII, Biomet 3i Os-seotite External, and Dentsply Sirona Xive. A total of 4,800 periapical radiographs (1,200 for each implant system) were collected and labeled based on electronic medical records. Regions of interest were manually cropped to 400×800 pixels, and all images were uploaded to Google Cloud storage. Approximately 80% of the images were used for training, 10% for validation, and 10% for testing. Google automated machine learning (AutoML) Vision automatically executed a neural architecture search technology to apply an appropriate algorithm to the uploaded data. A single-label image classification model was trained using AutoML. The performance of the mod-el was evaluated in terms of accuracy, precision, recall, specificity, and F1 score. RESULTS The accuracy, precision, recall, specificity, and F1 score of the AutoML Vision model were 0.981, 0.963, 0.961, 0.985, and 0.962, respectively. Osstem TSIII had an accuracy of 100%. Osstem USII and 3i Osseotite External were most often confused in the confusion matrix. CONCLUSION Deep learning-based AutoML on a cloud platform showed high accuracy in the classification of dental implant systems as a fine-tuned convolutional neural network. Higher-quality images from various implant systems will be required to improve the performance and clinical usability of the model.
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Affiliation(s)
- Hyun Jun Kong
- Department of Prosthodontics, College of Dentistry, Wonkwang University, Iksan, Korea
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Chen A, Ghaffar H, Taib H, Hassan A. A Review of Bacterial Colonization on Dental Implants With Various Hygiene Instruments. Cureus 2023; 15:e47483. [PMID: 38021779 PMCID: PMC10663103 DOI: 10.7759/cureus.47483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2023] [Indexed: 12/01/2023] Open
Abstract
Peri-implant diseases can still develop despite oral hygiene practices being maintained. Consequently, regular debridement must be carried out to ensure the implant is sustained. This review evaluated bacterial colonization on implants following the use of different hygiene instruments. A literature search was conducted in PubMed, ScienceDirect, and Scopus databases for articles published from 2012 to 2022. A total of 19 full-text papers were selected. The number of bacteria colonized was most commonly evaluated with a scanning electron microscope (SEM) or by colony-forming unit (CFU) counts, crystal violet assays, plaque index, probing depth, bleeding on probing, turbidity test, and live-dead assays. Rubber cup polishing with an abrasive paste showed a significantly greater reduction in biofilm formation compared with air abrasion with glycine powder, while the air abrasion treatment was found to be more efficient than piezoelectric, carbon, and stainless steel scalers. Surface treatment with Er, Cr: YSGG laser, and Er: YAG laser resulted in statistically significant superior dental biofilm removal compared with titanium curettes and photodynamic therapy. Air abrasion, plastic curette, titanium curette, and ultrasonic scaler showed no significant differences in bacterial colonization, but air abrasion and plastic curette were safer for zirconia implant decontamination. Furthermore, the titanium brush showed better results in decontaminating the implant surface than the Er: YAG laser. Although no single instrument or method could be considered as offering a gold standard in treating peri-implant diseases, the use of air abrasion with glycine powder, laser therapies, rubber cup polishing with an abrasive paste, and a titanium brush had high levels of cleaning efficacy and acceptance by patients.
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Affiliation(s)
- Ashmita Chen
- School of Dental Sciences, Universiti Sains Malaysia, Kelantan, MYS
| | - Hareem Ghaffar
- School of Dental Sciences, Universiti Sains Malaysia, Kelantan, MYS
| | - Haslina Taib
- School of Dental Sciences, Universiti Sains Malaysia, Kelantan, MYS
| | - Akram Hassan
- School of Dental Sciences, Universiti Sains Malaysia, Kelantan, MYS
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Ozkan A, Çakır DA, Tezel H, Sanajou S, Yirun A, Baydar T, Erkekoglu P. Dental Implants and Implant Coatings: A Focus on Their Toxicity and Safety. J Environ Pathol Toxicol Oncol 2023; 42:31-48. [PMID: 36749088 DOI: 10.1615/jenvironpatholtoxicoloncol.2022043467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Dental implants are medical devices that are surgically inserted into the patient's jawbone by an orthodontist to act as roots of missing teeth. After the implantation, the maxilla or mandible integrates with the surface of the dental implant. This process, called "osseointegration," is an important period to ensure the long-term use of dental implants and prevent implant failures. Metal implants are the most used implant materials. However, they have disadvantages such as corrosion, metal ion release from metal implant surfaces and associated toxicity. To avoid these adverse effects and improve osseointegration, alternative dental implant materials such as ceramics, polymers, composites, and novel surface modification technologies have been developed. The safety of these materials are also of concern for toxicologists. This review will give general information about dental implant materials, osseointegration and successful implantation process. Moreover, we will focus on the new surface coatings materials for of dental implants and their toxicity and safety concerns will be discussed.
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Affiliation(s)
- Atakan Ozkan
- TOBB University of Economics and Technology, Faculty of Engineering, Department of Biomedical Engineering, Ankara, Turkey
| | - Deniz Arca Çakır
- Hacettepe University Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara, Turkey; Hacettepe University Vaccine Institute, Department of Vaccinology, Ankara, Turkey
| | - Hülya Tezel
- Hacettepe University Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara, Turkey
| | - Sonia Sanajou
- Hacettepe University Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara, Turkey
| | - Anil Yirun
- Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Sıhhiye 06100, Ankara, Turkey; Çukurova University, Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Adana, Turkey
| | - Terken Baydar
- Hacettepe University Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara, Turkey
| | - Pinar Erkekoglu
- Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Sıhhiye 06100, Ankara, Turkey; Hacettepe University Vaccine Institute, Department of Vaccinology, Ankara, Turkey
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Blinova AA, Karamirzoev AA, Guseynova AR, Maglakelidze DG, Ilyaeva TA, Gusov BA, Meliksetyants AP, Pirumian MM, Taravanov MA, Pirogov MA, Vakalov DS, Bernyukevich TV, Gvozdenko AA, Nagdalian AA, Blinov AV. Synthesis and Characterization of Calcium Silicate Nanoparticles Stabilized with Amino Acids. MICROMACHINES 2023; 14:245. [PMID: 36837945 PMCID: PMC9967975 DOI: 10.3390/mi14020245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/10/2023] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
This work presents the development of a method for the synthesis of calcium silicate nanoparticles stabilized with essential amino acids. CaSiO3 nanoparticles were obtained through chemical precipitation. In the first stage, the optimal calcium-containing precursor was determined. The samples were examined using scanning electron microscopy. It was found that Ca(CH3COO)2 was the optimal calcium-containing precursor. Then, the phase composition of calcium silicate was studied using X-ray phase analysis. The results showed the presence of high-intensity bands in the diffractogram, which characterized the phase of the nanosized CaSiO3-wollastonite. In the next stage, the influence of the type of amino acid on the microstructure of calcium silicate was studied. The amnio acids studied were valine, L-leucine, L-isoleucine, L-methionine, L-threonine, L-lysine, L-phenylalanine, and L-tryptophan. The analysis of the SEM micrographs showed that the addition of amino acids did not significantly affect the morphology of the CaSiO3 samples. The surface of the CaSiO3 samples, both without a stabilizer and with amino acids, was represented by irregularly shaped aggregates consisting of nanoparticles with a diameter of 50-400 nm. Further, in order to determine the optimal amino acid to use to stabilize nanoparticles, computerized quantum chemical modeling was carried out. Analysis of the data obtained showed that the most energetically favorable interaction was the CaSiO3-L-methionine configuration, where the interaction occurs through the amino group of the amino acid; the energy value of which was -2058.497 kcal/mol. To confirm the simulation results, the samples were examined using IR spectroscopy. An analysis of the results showed that the interaction of calcium silicate with L-methionine occurs via the formation of a bond through the NH3+ group of the amino acid.
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Affiliation(s)
- Anastasiya A. Blinova
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | | | - Asiyat R. Guseynova
- Faculty of Dentistry, Derzhavin Tambov State University, 392008 Tambov, Russia
| | - David G. Maglakelidze
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | - Tatiana A. Ilyaeva
- Faculty of Medicine, Stavropol State Medical University, 355017 Stavropol, Russia
| | - Batradz A. Gusov
- Faculty of Dentistry, North Ossetian State Medical University, 362025 Vladikavkaz, Russia
| | | | - Mari M. Pirumian
- Medical and Preventive Faculty, Rostov State Medical University, 344022 Rostov-on-Don, Russia
| | - Maxim A. Taravanov
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | - Maxim A. Pirogov
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | - Dmitriy S. Vakalov
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | | | - Alexey A. Gvozdenko
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | - Andrey A. Nagdalian
- Laboratory of Food and Industrial Biotechnology, North Caucasus Federal University, 355017 Stavropol, Russia
| | - Andrey V. Blinov
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
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Yaqoob K, Amjad I, Munir Awan MA, Liaqat U, Zahoor M, Kashif M. Novel Method for the Production of Titanium Foams to Reduce Stress Shielding in Implants. ACS OMEGA 2023; 8:1876-1884. [PMID: 36687080 PMCID: PMC9850780 DOI: 10.1021/acsomega.2c02340] [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: 04/14/2022] [Accepted: 07/20/2022] [Indexed: 06/17/2023]
Abstract
Titanium foams have potential applications in orthopedic and dental implants because of their low elastic modulus and good bone in-growth properties. In the present study, a novel method for the preparation of three-dimensional interconnected microporous titanium foams has been developed. This method is based on the insertion of a filler metal into the titanium metal by arc melting, followed by its removal by an electrochemical dealloying process for the development of foams. Complete removal of the filler metal by the electrochemical dealloying process was confirmed by an X-ray diffractometry (XRD) analysis, whereas scanning electron microscopy (SEM) analysis of the developed foams showed the development of interconnected porosity. Ti foams with different levels of porosities were successfully developed by varying the amount of the filler metal. Mechanical and thermal characterizations of the developed foams were carried out using compression testing and laser flash apparatus, respectively. The yield strength and elastic modulus of the developed foams were found to decrease by increasing the volume fraction of pores. The elastic modulus of the developed titanium foams (15.5-36 GPa) was found to be closer to that of human bones, whereas their yield strength (147-170 MPa) remained higher than that of human bones. It is therefore believed that the developed Ti foams can help in reducing the problem of stress shielding observed in orthopedic implants. The thermal diffusivity of the developed foams (4.3-0.69 mm2/s) was found to be very close to that of human dentine.
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Affiliation(s)
- Khurram Yaqoob
- School
of Chemical and Materials Engineering, National
University of Sciences and Technology, 44000 Islamabad, Pakistan
| | - Izza Amjad
- School
of Chemical and Materials Engineering, National
University of Sciences and Technology, 44000 Islamabad, Pakistan
| | - Muhammad Awais Munir Awan
- School
of Chemical and Materials Engineering, National
University of Sciences and Technology, 44000 Islamabad, Pakistan
| | - Usman Liaqat
- School
of Chemical and Materials Engineering, National
University of Sciences and Technology, 44000 Islamabad, Pakistan
| | - Muhammad Zahoor
- Dept.
Molecular Medicine, University of Oslo, 0315 Oslo, Norway
| | - Muhammad Kashif
- Mechanical
Engineering Department, University of Central
Punjab, 1-Avenue Khayaban-e-Jinah, Johar Town, 54000 Lahore, Pakistan
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Lv B, Wu J, Xiong Y, Xie X, Lin Z, Mi B, Liu G. Functionalized multidimensional biomaterials for bone microenvironment engineering applications: Focus on osteoimmunomodulation. Front Bioeng Biotechnol 2022; 10:1023231. [PMID: 36406210 PMCID: PMC9672076 DOI: 10.3389/fbioe.2022.1023231] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 10/20/2022] [Indexed: 09/26/2023] Open
Abstract
As bone biology develops, it is gradually recognized that bone regeneration is a pathophysiological process that requires the simultaneous participation of multiple systems. With the introduction of osteoimmunology, the interplay between the immune system and the musculoskeletal diseases has been the conceptual framework for a thorough understanding of both systems and the advancement of osteoimmunomodulaty biomaterials. Various therapeutic strategies which include intervention of the surface characteristics or the local delivery systems with the incorporation of bioactive molecules have been applied to create an ideal bone microenvironment for bone tissue regeneration. Our review systematically summarized the current research that is being undertaken in the field of osteoimmunomodulaty bone biomaterials on a case-by-case basis, aiming to inspire more extensive research and promote clinical conversion.
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Affiliation(s)
| | | | | | | | | | - Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Hoque ME, Showva NN, Ahmed M, Rashid AB, Sadique SE, El-Bialy T, Xu H. Titanium and titanium alloys in dentistry: current trends, recent developments, and future prospects. Heliyon 2022; 8:e11300. [PMID: 36387463 PMCID: PMC9640965 DOI: 10.1016/j.heliyon.2022.e11300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/26/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022] Open
Abstract
Many implant materials have been used in various dental applications depending on their efficacy and availability. A dental implant must possess the required characteristics, such as biocompatibility, corrosion & wear resistance, adequate mechanical properties, osseointegration, etc., to ensure its safe and optimum use. This review analyzes various aspects of titanium (Ti) and Ti alloys, including properties, manufacturing processes, surface modifications, applications as dental implants, and limitations. In addition, it also presents a perception of recent advances in Ti-based implant materials and the futuristic development of innovative dental implants.
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Affiliation(s)
- Md Enamul Hoque
- Department of Biomedical Engineering, Military Institute of Science and Technology, Dhaka, Bangladesh
| | - Nazmir-Nur Showva
- Department of Biomedical Engineering, Military Institute of Science and Technology, Dhaka, Bangladesh
| | - Mansura Ahmed
- Department of Biomedical Engineering, Military Institute of Science and Technology, Dhaka, Bangladesh
| | - Adib Bin Rashid
- Department of Industrial and Production Engineering, Military Institute of Science and Technology, Dhaka, Bangladesh
| | - Sarder Elius Sadique
- College of Information Technology and Engineering, Marshall University, West Virginia, USA
| | - Tarek El-Bialy
- Department of Dentistry & Dental Hygiene, University of Alberta, Alberta, Canada
| | - Huaizhong Xu
- Department of Biobased Materials Science, Kyoto Institute of Technology (KIT), Sakyoku, Kyoto City, Japan
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11
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Chen L, Yao Z, Zhang S, Tang K, Yang Q, Wang Y, Li B, Nie Y, Tian X, Sun L. Biomaterial-induced macrophage polarization for bone regeneration. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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12
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Babaier RS, Haider J, Alshabib A, Silikas N, Watts DC. Mechanical behaviour of prosthodontic CAD/CAM polymer composites aged in three food-simulating liquids. Dent Mater 2022; 38:1492-1506. [PMID: 35871980 DOI: 10.1016/j.dental.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/09/2022] [Accepted: 07/09/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVES This study investigated the effect of ageing in three food-simulating liquids (FSLs) on mechanical properties of three prosthodontic CAD/CAM polymer composites intended for construction of implant-supported frameworks. METHODS Materials investigated were: (i) a carbon fibre-reinforced composite (CarboCAD 3D dream frame; CC), (ii) a glass fibre-reinforced composite (TRINIA; TR), and (iii) a reinforced PEEK (DentoKeep; PK). Filler contents and microstructural arrangements were determined by thermo-gravimetry and tomography (µ-CT), respectively. Flexural properties (FS and Ef) were measured by 3-point bending (3PB) of 1 mm and 2 mm thick beam specimens. Fracture toughness (KIC) was measured by single-edge-notched-bending (SENB). All measurements were made at baseline (dry) and after 1-day and 7-day storage at 37 ℃ in either water, 70 % ethanol/water (70 % E/W) or methyl ethyl ketone (MEK). Failed specimens were examined microscopically. Statistical analyses included four-way ANOVA, two-way ANOVA and multiple Tukey comparison tests (α = 0.05). Multiple independent t-tests were performed regarding thickness effects on FS and Ef (α = 0.05). RESULTS At baseline, the mechanical properties increased in the sequence: PK< TR< CC (p < 0.001). FS ranged from 192.9 to 501.5 MPa; Ef from 4.2 to 18.1 GPa; and KIC from 4.9-12.4 MPa.m0.5. Fibre-reinforced composites (CC and TR) were significantly stronger than PK. However, all properties of CC and TR reduced after 1 d storage in 70 % E/W and MEK with FS ranging from 58.6 to 408 MPa; Ef from 1 to 15.4 GPa; KIC from 6.87 to 10.17 MPa.m0.5. Greater reductions occurred after 7 d storage. MEK was more detrimental than 70 % E/W and water on fibre-reinforced composites. SIGNIFICANCE Mechanical properties of each CAD/CAM composite were strongly dependent upon media and ageing. Although the mechanical properties of PK were initially inferior, it was relatively stable in all FSLs. All three materials exhibited sufficient mechanical properties at 1 mm thickness, but thicker specimens were more tolerant to ageing.
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Affiliation(s)
- Rua S Babaier
- Division of Dentistry, School of Medical Sciences, University of Manchester, United Kingdom; Prosthetic Dental Sciences, College of Dentistry, King Saud University, Saudi Arabia
| | - Julfikar Haider
- Division of Dentistry, School of Medical Sciences, University of Manchester, United Kingdom; Department of Engineering, Manchester Metropolitan University, Manchester, United Kingdom
| | - Abdulrahman Alshabib
- Restorative Dental Sciences, College of Dentistry, King Saud University, Saudi Arabia; Engr. Abdullah Bugshan Research Chair for Dental and Oral Rehabilitation, King Saud University, Saudi Arabia
| | - Nick Silikas
- Division of Dentistry, School of Medical Sciences, University of Manchester, United Kingdom.
| | - David C Watts
- Division of Dentistry, School of Medical Sciences, University of Manchester, United Kingdom; Photon Science Institute, University of Manchester, United Kingdom.
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Diagnostic tests for titanium hypersensitivity in implant dentistry: a systematic review of the literature. Int J Implant Dent 2022; 8:29. [PMID: 35819566 PMCID: PMC9276909 DOI: 10.1186/s40729-022-00428-0] [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: 03/22/2022] [Accepted: 06/30/2022] [Indexed: 01/10/2023] Open
Abstract
PURPOSE There are rising concerns about titanium hypersensitivity reaction regarding dental endosseous implants. This review aims to summarize and compare the validity and reliability of the available dermatological and laboratory diagnostic tests regarding titanium hypersensitivity. The following PICO design was used: In Patients with titanium dental implants (P) does epicutaneous testing (ECT) (I), compared to lymphocyte transformation test (LTT) or Memory Lymphocyte Immunostimulation Assay (MELISA) (C) detect hypersensitivity reactions (O)? A literature search was performed including all studies dealing with this topic. Studies regarding orthopedic implants were excluded. METHODS Three databases (MEDLINE PubMed, Cochrane Library, SciELO) were screened for suitable studies and an additional manual search was also performed. Literature regarding hypersensitivity reactions in orthopedic implants, hypersensitivity reactions regarding implants not related to dental or maxillofacial surgery, animal studies and in vitro studies were excluded. A quality assessment of all selected full-text articles was performed. Randomized, controlled trials were evaluated with the Cochrane Risk of Bias Tool I. Cohort studies were assessed according to the New Castle-Ottawa Scale and case series according to Moga et al. (Development of a quality appraisal tool for case series studies using a modified Delphi technique. 2012). RESULTS 10 studies were included in the quantitative synthesis and available for the endpoint diagnostics of intolerance reactions to titanium dental implants: 2 clinical studies, 7 cohort studies and 1 case series. The potential for bias (internal validity) for these studies was overall rated as high. CONCLUSIONS The study of the available literature regarding ECT and MELISA or LTT in patients with suspected titanium hypersensitivity showed inconsistent results in terms of reliability and validity and thus, those tests should be regarded cautiously. There is strong evidence that titanium hypersensitivity in dental implants is associated with innate immunity: unspecific pro-inflammatory responses due to particle induced hyperreactivity of macrophages or toxicological responses especially towards nanoparticles rather than activation of the adaptive immune system. Therefore, tests detecting allergies do not seem expedient and inflammatory clinical signs should be regarded as leading parameters.
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The Effects of Insertion Approach on the Stability of Dental Implants. Appl Bionics Biomech 2022; 2022:7188240. [PMID: 35198039 PMCID: PMC8860557 DOI: 10.1155/2022/7188240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 02/05/2022] [Indexed: 11/26/2022] Open
Abstract
Dental implant surgery involves the insertion of a dental implant into the alveolar bone; the success of the surgery depends on the initial stability of the implant. The objective of this study was to examine the effects of dental implant insertion approaches in clinical surgery and in accordance with the standards of American Society for Testing and Materials on initial implant stability. Three insertion approaches were used for dental implant placement (Branemark Systems NobelSpeedy Groovy, Nobel Biocare AB, Gothenburg, Sweden) in two types of artificial bone—good bone (GB) and poor bone (PB). The three insertion approaches were as follows: (1) continuous rotation insertion (CRI): using a torque testing machine to continuously screw in an implant to completion and (2 and 3) intermittent rotation insertion (IRI)_90 and IRI_80: using CRI to bury an implant to 90% and 80% of its full length followed by IRI to complete the implantation, respectively. The maximum insertion torque value (ITV), periotest value (PTV), and implant stability quotient (ISQ) were measured and compared. The results indicated that bone quality and insertion approach both affected implant stability. Insertion approaches affected all three implant stability indicators differently in the GB and PB groups (p = 0.008). In GB groups, the insertion approach primarily affected ITV, whereas in PB groups, it primarily affected PTV. The effect of the insertion approach was less apparent for ISQ. Overall, in both the GB and PB groups, the implant stability for IRI_80 was greater than that for IRI_90, and the implant stability for IRI_90 was greater than that for CRI. Future in vitro studies should adopt an insertion approach that complies with the clinical practice for dental implant surgery. Dentists should adjust the timing for IRI in dental implant surgery to achieve greater initial dental implant stability.
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15
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Sghaireen MG, Shrivastava D, Alnusayri MO, Alahmari AD, Aldajani AM, Srivastava KC, Alam MK. Bone Grafts in Dental Implant Management: A Narrative Review. Curr Pediatr Rev 2022; 19:15-20. [PMID: 35410611 DOI: 10.2174/1573396318666220411105715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 01/10/2022] [Accepted: 02/01/2022] [Indexed: 01/28/2023]
Abstract
Successful implant dentistry can be directly related to the quality and quantity of bone at the recipient site of the implant. Over the years, bone grafts have been used for the treatment of various osseous defects. Due to the widespread acceptance of dental implants, interest in bone reconstruction for the oral cavity has increased dramatically over the past decade. Many patients who request implant rehabilitation require ancillary procedures to increase the quantity and quality of the recipient's bone. The internal architecture of the bone is generally described in terms of quality of the bone, which in turn reflects the strength (degree of compactness) of the bone. This is considered a crucial factor about the available bone at the edentulous site while planing about the design of the planned implant, surgical approach, healing time, and the initial progressive bone loading during the prosthetic reconstruction. Atrophy of the alveolar processes is expressed as a reduction of height and width. Databases were electronically searched up to April 2019 to identify human bone graft studies to provide contemporary and comprehensive information about the various bone grafts used in dental implant management.
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Affiliation(s)
- Mohammed G Sghaireen
- Department of Prosthetic Dentistry, College of Dentistry, Jouf University, Sakaka, 72345, Saudi Arabia
| | - Deepti Shrivastava
- Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka 72345, Saudi Arabia
| | - Mohammed O Alnusayri
- Department of Prosthetic Dentistry, College of Dentistry, Jouf University, Sakaka, 72345, Saudi Arabia
| | - Abdulmajeed D Alahmari
- Department of Prosthetic Dentistry, College of Dentistry, Jouf University, Sakaka, 72345, Saudi Arabia
| | - Ali M Aldajani
- Department of Prosthetic Dentistry, College of Dentistry, Jouf University, Sakaka, 72345, Saudi Arabia
| | - Kumar C Srivastava
- Department of Oral Maxil-lofacial Surgery & Diagnostic Sciences, College of Dentistry, Jouf University, Sakaka, 72345, Saudi Arabia
| | - Mohammad K Alam
- Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka 72345, Saudi Arabia
- Department of Public Health, Faculty of Allied Health Sciences, Daffodil international University, Dhaka, Bangladesh
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16
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Meng Y, Chen J, Wu X. Effect of Hypoxia-Inducible Factor-1 α on Osteogenesis of Titanium Dioxide Nanotube Bone Marrow Mesenchymal Stem Cells with Different Diameters Under Periodic Tensile Stress. J Biomed Nanotechnol 2022; 18:112-119. [PMID: 35180904 DOI: 10.1166/jbn.2022.3221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Bone marrow mesenchymal stem cells (BMSC) have the ability to multi polarize with multiple tropisms and participate in tissue remodeling. This study assessed the effect of titanium dioxide nanotubes with different diameters on ossification of BMSC cells and HIF-1α expression in BMSC ossification. Titanium dioxide nanotubes with different diameters were prepared and then the following groups were set according to the size of pressure; Ti group, NT10 group, NT30 group, and NT60 group. Analysis of cell morphology was done by fluorescence microscope, while adhesion and proliferation were assessed by MTT assay. Moreover, ALP activity, collagen secretion and outer matrix mineralization and expression of HIF-1α, VEGF, and TWIST were assessed by RT-PCR and Western blot. The P3 generation of BMSC cells was successfully obtained. Three types of nanotubes were arranged regularly and contact angle showed NT60<NT30<NT10<Ti, protein adsorption presented NT10>Ti>NT30>NT60 (P < 0.05). Cells from NT30 and N60 groups showed obvious expansion with pseudopodia and pseudo plates of cells. Cell adhesion showed changes in sizes of NT10>Ti>NT30>NT66. NT60 group showed lower cell proliferation and higher ALP activity and collagen secretion than the other groups. NT30 and NT60 group presented higher mineralization level, larger diameter, and higher degree of promotion. The NT30 group presented lowest content of HIF-1α (0.12 ± 0.03), VEGF (0.013 ± 0.004), and TWIST (0.014 ± 0.003). Inoculation of BMSCs on titanium dioxide nanotubes of different diameters under cyclical tensile stress environment can promote growth of BMSC cells in a diameter-dependent manner.
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Affiliation(s)
- Yu Meng
- Department of Emergency Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Juwu Chen
- Department of Emergency Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Xuejian Wu
- Department of Orthopedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052 Henan, China
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Mathew A, Abraham S, Stephen S, Babu AS, Gowd SG, Vinod V, Biswas R, Nair MB, Unni AKK, Menon D. Superhydrophilic multifunctional nanotextured titanium dental implants: in vivo short and long-term response in a porcine model. Biomater Sci 2021; 10:728-743. [PMID: 34935788 DOI: 10.1039/d1bm01223a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Current clinical demand in dental implantology is for a multifunctional device with optimum mechanical properties, improved biocompatibility and bioactivity, and having differential interactions with cells and pathogenic agents. This would minimise bacterial infection, biofilm formation and modulate inflammation, leading to a fast and durable osseointegration. The present study intends to establish the multifunctional behaviour of surface modified titanium dental implants that are superhydrophilic, with unique micro-nano or nanoscale topographies, developed by a facile hydrothermal technique. Here, the short and long-term performances of these textured implants are tested in a split mouth design using a porcine model, in pre- and post-loaded states. Quantitative and qualitative analyses of the bone implant interphase are performed through μ-CT and histology. Parameters that evaluate bone mineral density, bone contact volume and bone implant contact reveal enhanced bone apposition with better long-term response for the nano and micro-nano textured surfaces, compared to the commercial microtextured implant. Concurrently, the nanoscale surface features on implants reduced bacterial attachment by nearly 90% in vivo, outperforming the commercial variant. This preclinical evaluation data thus reveal the superiority of nano/micro-nano textured designs for clinical application and substantiate their improved osseointegration and reduced bacterial adhesion, thus proposing a novel dental implant with multifunctional characteristics.
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Affiliation(s)
- Anil Mathew
- Amrita School of Dentistry, Kochi, Kerala, India
| | | | - Shamilin Stephen
- Amrita Centre for Nanosciences and Molecular Medicine, Kochi, Kerala, India.
| | | | - Siddaramana G Gowd
- Amrita Centre for Nanosciences and Molecular Medicine, Kochi, Kerala, India.
| | - Vivek Vinod
- Amrita Centre for Nanosciences and Molecular Medicine, Kochi, Kerala, India.
| | - Raja Biswas
- Amrita Centre for Nanosciences and Molecular Medicine, Kochi, Kerala, India.
| | - Manitha B Nair
- Amrita Centre for Nanosciences and Molecular Medicine, Kochi, Kerala, India.
| | - A K K Unni
- Central Animal Facility, Amrita Vishwa Vidyapeetham, Ponekkara P. O., Cochin 682041, Kerala, India
| | - Deepthy Menon
- Amrita Centre for Nanosciences and Molecular Medicine, Kochi, Kerala, India.
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18
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Cho YD, Kim WJ, Ryoo HM, Ku Y. Patent landscape report on dental implants: A technical analysis. Clin Implant Dent Relat Res 2021; 23:857-863. [PMID: 34669245 DOI: 10.1111/cid.13048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 08/09/2021] [Accepted: 09/21/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND PURPOSE Significant research and development (R&D) has been conducted to make the best dental implants while developing various patent applications and registrations. In this study, we evaluated the current status of patents on dental implants and identified the future direction of R&D progress. MATERIALS AND METHODS A total of 29 711 patents related to dental implants were reviewed. These were published between 1909 and 2020 and retrieved from the Derwent Innovation patent database. The patents were grouped into three categories depending on the implant components: fixture, abutment, and artificial teeth. RESULTS The category with most patents was "abutment," and the most cited patent was "screw-type dental implant anchor." Global patenting trends over the past 20 years showed that both applicants and applications increased in the early 2010s; however, these have since been on the decline. Currently, the United States holds the largest number of patents, and Nobel Biocare Holding AG is the top assignee. Technic maturation prediction analysis showed that the current dental implant technology is in the "decline stage." CONCLUSION Trend analysis of the dental implant patent indicates the main contributors of development are profit-oriented companies. Recent reduction in the number of new patent applications suggests the technology is in the mature declining stage. The emergence of new materials or technologies that may close the gap in clinical unmet needs would reverse the trend.
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Affiliation(s)
- Young-Dan Cho
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, South Korea
| | - Woo-Jin Kim
- Department of Molecular Genetics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, South Korea
| | - Hyun-Mo Ryoo
- Department of Molecular Genetics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, South Korea
| | - Young Ku
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, South Korea
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19
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The Role of Biomaterials and Biocompatible Materials in Implant-Supported Dental Prosthesis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:3349433. [PMID: 34394378 PMCID: PMC8360736 DOI: 10.1155/2021/3349433] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 07/27/2021] [Indexed: 12/24/2022]
Abstract
The dental implant is one of the appropriate instances of the different dental materials and their application, which is the combined procedure of technology and science in physics, biomechanics, and surface chemistry from macroscale to nanoscale surface engineering and manufactured technologies. In recent decades, biomaterials in implant therapy promote bone response and biomechanical ability, which is long-term from surgical equipment to final prosthetic restoration. Biomaterials have a crucial role in rehabilitating the damaged structure of the tooth and supplying acceptable outcomes correlated with clinical performance. There are some challenges in implantation such as bleeding, mobility, peri-implant infections, and the solution associated with modern strategies which are regarded to biomaterials. Various materials have been known as promising candidates for coatings of dental implants which contain polyhydroxyalkanoates, calcium phosphate, carbon, bisphosphonates, hydroxyapatite, bone stimulating factors, bioactive glass, bioactive ceramics, collagen, chitosan, metal and their alloys, fluoride, and titanium/titanium nitride. It is pivotal that biomaterials should be biodegradable; for example, polyhydroxyalkanoates are biodegradable; also, they do not have bad effects on tissues and cells. Despite this, biomaterials have important roles in prosthetic conditions such as dental pulp regeneration, the healing process, and antibacterial and anti-inflammatory effects. In this review study, the role of biocompatible materials in dental implants is investigated in in vitro and in vivo studies.
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20
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Munir H, Bilal M, Khan MI, Iqbal HM. Gums‐Based Bionanostructures for Medical Applications. POLYSACCHARIDES 2021. [DOI: 10.1002/9781119711414.ch18] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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21
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D'Agostino A, Tana F, Ettorre A, Pavarini M, Serafini A, Cochis A, Scalia AC, Rimondini L, De Giglio E, Cometa S, Chiesa R, De Nardo L. Mesoporous zirconia surfaces with anti-biofilm properties for dental implants. Biomed Mater 2021; 16. [PMID: 33857927 DOI: 10.1088/1748-605x/abf88d] [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: 01/20/2021] [Accepted: 04/15/2021] [Indexed: 01/30/2023]
Abstract
Cytocompatible bioactive surface treatments conferring antibacterial properties to osseointegrated dental implants are highly requested to prevent bacteria-related peri-implantitis. Here we focus on a newly designed family of mesoporous coatings based on zirconia (ZrO2) microstructure doped with gallium (Ga), exploiting its antibacterial and pro-osseo-integrative properties. The ZrO2films were obtained via sol-gel synthesis route using Pluronic F127 as templating agent, while Ga doping was gained by introducing gallium nitrate hydrate. Chemical characterization by means of x-ray photoelectron spectroscopy and glow discharge optical emission spectroscopy confirmed the effective incorporation of Ga. Then, coatings morphological and structural analysis were carried out by transmission electron microscopy and selected area electron diffraction unveiling an effective stabilization of both the mesoporous structure and the tetragonal ZrO2phase. Specimens' cytocompatibility was confirmed towards gingival fibroblast and osteoblasts progenitors cultivated directly onto the coatings showing comparable metabolic activity and morphology in respect to controls cultivated on polystyrene. The presence of Ga significantly reduced the metabolic activity of the adhered oral pathogensPorphyromonas gingivalisandAggregatibacter actinomycetemcomitansin comparison to untreated bulk zirconia (p< 0.05); on the opposite, Ga ions did not significantly reduce the metabolism of the oral commensalStreptococcus salivarius(p> 0.05) thus suggesting for a selective anti-pathogens activity. Finally, the coatings' ability to preserve cells from bacterial infection was proved in a co-culture method where cells and bacteria were cultivated in the same environment: the presence of Ga determined a significant reduction of the bacteria viability while allowing at the same time for cells proliferation. In conclusion, the here developed coatings not only demonstrated to satisfy the requested antibacterial and cytocompatibility properties, but also being promising candidates for the improvement of implantable devices in the field of implant dentistry.
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Affiliation(s)
- Agnese D'Agostino
- Department of Chemistry, Materials and Chemical Engineering 'G. Natta', Politecnico di Milano, Milan, Italy
| | - Francesca Tana
- Department of Chemistry, Materials and Chemical Engineering 'G. Natta', Politecnico di Milano, Milan, Italy.,National Interuniversity Consortium of Materials Science and Technology (INSTM), Local Unit Politecnico di Milano, Florence, Italy
| | - Alessandro Ettorre
- Department of Chemistry, Materials and Chemical Engineering 'G. Natta', Politecnico di Milano, Milan, Italy
| | - Matteo Pavarini
- Department of Chemistry, Materials and Chemical Engineering 'G. Natta', Politecnico di Milano, Milan, Italy
| | - Andrea Serafini
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Local Unit Politecnico di Milano, Florence, Italy
| | - Andrea Cochis
- Department of Health Sciences, Center for Translational Research on Autoimmune and Allergic Diseases CAAD, Università del Piemonte Orientale UPO, Novara, Italy
| | - Alessandro Calogero Scalia
- Department of Health Sciences, Center for Translational Research on Autoimmune and Allergic Diseases CAAD, Università del Piemonte Orientale UPO, Novara, Italy
| | - Lia Rimondini
- Department of Health Sciences, Center for Translational Research on Autoimmune and Allergic Diseases CAAD, Università del Piemonte Orientale UPO, Novara, Italy
| | - Elvira De Giglio
- Department of Chemistry, Università di Bari Aldo Moro, Bari, Italy
| | | | - Roberto Chiesa
- Department of Chemistry, Materials and Chemical Engineering 'G. Natta', Politecnico di Milano, Milan, Italy.,National Interuniversity Consortium of Materials Science and Technology (INSTM), Local Unit Politecnico di Milano, Florence, Italy
| | - Luigi De Nardo
- Department of Chemistry, Materials and Chemical Engineering 'G. Natta', Politecnico di Milano, Milan, Italy.,National Interuniversity Consortium of Materials Science and Technology (INSTM), Local Unit Politecnico di Milano, Florence, Italy
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22
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Chen W, Zhu WQ, Qiu J. Impact of exogenous metal ions on peri-implant bone metabolism: a review. RSC Adv 2021; 11:13152-13163. [PMID: 35423842 PMCID: PMC8697588 DOI: 10.1039/d0ra09395e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 03/25/2021] [Indexed: 11/21/2022] Open
Abstract
The development of effective methods to promote the osseointegration of dental implants by surface modification is an area of intense research in dental materials science. Exogenous metal ions present in the implant and surface modifications are closely related to the bone metabolism around the implant. In the complex oral microenvironment, the release of metal ions caused by continuous corrosion of dental implants has an unfavorable impact on the surrounding tissue, and then affects osseointegration, leading to bad results such as loosening and falling off in the late stage of the implant. Besides, these ions can even be distributed in distant tissues and organs. Currently, surface modification techniques are being developed that involve different processing technologies including the introduction of exogenous metal ions with different properties onto the surface of implants to improve performance. However, most metal elements have some level of biological toxicity and can only be used within a safe concentration range to exert the optimum biological effects on recipients. In this paper, we review the adverse effects of metal ions on osseointegration and highlight the emerging applications for metal elements in improving the performance of dental implants.
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Affiliation(s)
- Wei Chen
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University Nanjing 210029 PR China +86 25 69593085
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University Nanjing 210029 PR China
| | - Wen-Qing Zhu
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University Nanjing 210029 PR China +86 25 69593085
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University Nanjing 210029 PR China
| | - Jing Qiu
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University Nanjing 210029 PR China +86 25 69593085
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University Nanjing 210029 PR China
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23
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Wang L, Gao Z, Su Y, Liu Q, Ge Y, Shan Z. Osseointegration of a novel dental implant in canine. Sci Rep 2021; 11:4317. [PMID: 33619303 PMCID: PMC7900171 DOI: 10.1038/s41598-021-83700-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 02/05/2021] [Indexed: 01/20/2023] Open
Abstract
This study aimed to compare and verify the osseointegration performance of a novel implant (NI) in vivo, which could provide a useful scientific basis for the further development of NIs. Thirty-two NIs treated with hydrofluoric acid and anodization and sixteen control implants (CIs) were placed in the mandibles of 8 beagles. Micro-CT showed that the trabecular number (Tb.N) significantly increased and trabecular separation (Tb.Sp) significantly decreased in the NIs at 2 weeks. Significant differences were found in the trabecular thickness, Tb.N, Tb.Sp, bone surface/bone volume ratio, and bone volume/total volume ratio between the two groups from the 2nd–4th weeks. However, there were no significant differences between the two groups in the bone volume density at 2, 4, 8, or 12 weeks or bone-implant contact at 2 or 4 weeks, but the BIC in the CIs was higher than that in the NIs at the 8th and 12th weeks. Meanwhile, the histological staining showed a similar osseointegration process between the two groups over time. Overall, the NIs could be used as new potential implants after further improvement.
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Affiliation(s)
- Lingxiao Wang
- Outpatient Department of Oral and Maxillofacial Surgery, School of Stomatology, Capital Medical University, Tian Tan Xi Li No. 4, Beijing, 100050, People's Republic of China
| | - Zhenhua Gao
- Outpatient Department of Oral and Maxillofacial Surgery, School of Stomatology, Capital Medical University, Tian Tan Xi Li No. 4, Beijing, 100050, People's Republic of China
| | - Yucheng Su
- Department of Stomatology, Chinese Academy of Medical Science & Peking Union Medical College Hospital, No. 41 Damucang Hutong, Xicheng District, Beijing, 100032, People's Republic of China.,Beijing Citident Stomatology Hospital, Beijing, 100032, People's Republic of China
| | - Qian Liu
- Beijing Citident Stomatology Hospital, Beijing, 100032, People's Republic of China
| | - Yi Ge
- Department of Stomatology, Chinese Academy of Medical Science & Peking Union Medical College Hospital, No. 41 Damucang Hutong, Xicheng District, Beijing, 100032, People's Republic of China.
| | - Zhaochen Shan
- Outpatient Department of Oral and Maxillofacial Surgery, School of Stomatology, Capital Medical University, Tian Tan Xi Li No. 4, Beijing, 100050, People's Republic of China.
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Fialho L, Grenho L, Fernandes MH, Carvalho S. Porous tantalum oxide with osteoconductive elements and antibacterial core-shell nanoparticles: A new generation of materials for dental implants. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 120:111761. [PMID: 33545902 DOI: 10.1016/j.msec.2020.111761] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/21/2020] [Accepted: 11/24/2020] [Indexed: 01/01/2023]
Abstract
Implant surfaces with cytocompatible and antibacterial properties are extremely desirable for the prevention of implant's infection and the promotion of osseointegration. In this work, both micro-arc oxidation (MAO) and DC magnetron sputtering techniques were combined in order to endow tantalum-based surfaces with osteoblastic cytocompatibility and antibacterial activity. Porous Ta2O5 layers containing calcium (Ca) and phosphorous (P) were produced by MAO (TaCaP) to mimic the bone tissue morphology and chemical composition (Ca/P ratio close to 1.67). Furthermore, zinc (Zn) nanoparticles were deposited onto the previous surfaces by DC magnetron sputtering without or with an additional thin carbon layer deposited over the nanoparticles (respectively, TaCaP-Zn and TaCaP-ZnC) to control the Zn ions (Zn2+) release. Before osteoblastic cell seeding, the surfaces were leached for three time-points in PBS. All modified samples were cytocompatible. TaCaP-Zn slightly impaired cell adhesion but this was improved in the samples leached for longer immersion times. The initial cell adhesion was clearly improved by the deposition of the carbon layer on the Zn nanoparticles, which also translated to a higher proliferation rate. Both Zn-containing surfaces presented antibacterial activity against S. aureus. The two surfaces were active against planktonic bacteria, and TaCaP-Zn also inhibited sessile bacteria. Attributing to the excellent in vitro performance of the nanostructured Ta surface, with osteoconductive elements by MAO followed by antimicrobial nanoparticles incorporation by magnetron sputtering, this work is clearly a progress on the strategy to develop a new generation of dental implants.
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Affiliation(s)
- Luísa Fialho
- CFUM-UP, Physics Department, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal.
| | - Liliana Grenho
- Laboratory for Bone Metabolism and Regeneration, Faculdade de Medicina Dentária, Universidade do Porto, Rua Dr. Manuel Pereira da Silva, 4200-392 Porto, Portugal; LAQV/REQUIMTE, U. Porto, 4160-007 Porto, Portugal
| | - Maria H Fernandes
- Laboratory for Bone Metabolism and Regeneration, Faculdade de Medicina Dentária, Universidade do Porto, Rua Dr. Manuel Pereira da Silva, 4200-392 Porto, Portugal; LAQV/REQUIMTE, U. Porto, 4160-007 Porto, Portugal
| | - Sandra Carvalho
- CFUM-UP, Physics Department, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; SEG-CEMMPRE Mechanical Engineering Department, University of Coimbra, 3030-788 Coimbra. Portugal
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25
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Oleshko O, Liubchak I, Husak Y, Korniienko V, Yusupova A, Oleshko T, Banasiuk R, Szkodo M, Matros-Taranets I, Kazek-Kęsik A, Simka W, Pogorielov M. In Vitro Biological Characterization of Silver-Doped Anodic Oxide Coating on Titanium. MATERIALS 2020; 13:ma13194359. [PMID: 33008012 PMCID: PMC7578992 DOI: 10.3390/ma13194359] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 09/24/2020] [Accepted: 09/27/2020] [Indexed: 12/13/2022]
Abstract
Despite the high biocompatibility and clinical effectiveness of Ti-based implants, surface functionalization (with complex osteointegrative/antibacterial strategies) is still required. To enhance the dental implant surface and to provide additional osteoinductive and antibacterial properties, plasma electrolytic oxidation of a pure Ti was performed using a nitrilotriacetic acid (NTA)-based Ag nanoparticles (AgNP)-loaded calcium–phosphate solution. Chemical and structural properties of the surface-modified titanium were assessed using scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) and contact angle measurement. A bacterial adhesion test and cell culture biocompatibility with collagen production were performed to evaluate biological effectiveness of the Ti after the plasma electrolytic process. The NTA-based calcium–phosphate solution with Ag nanoparticles (AgNPs) can provide formation of a thick, porous plasma electrolytic oxidation (PEO) layer enriched in silver oxide. Voltage elevation leads to increased porosity and a hydrophilic nature of the newly formed ceramic coating. The silver-enriched PEO layer exhibits an effective antibacterial effect with high biocompatibility and increased collagen production that could be an effective complex strategy for dental and orthopedic implant development.
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Affiliation(s)
- Oleksandr Oleshko
- Biomedical Research Centre, Sumy State University, 40018 Sumy, Ukraine; (O.O.); (I.L.); (Y.H.); (V.K.); (A.Y.); (T.O.)
| | - Iryna Liubchak
- Biomedical Research Centre, Sumy State University, 40018 Sumy, Ukraine; (O.O.); (I.L.); (Y.H.); (V.K.); (A.Y.); (T.O.)
| | - Yevheniia Husak
- Biomedical Research Centre, Sumy State University, 40018 Sumy, Ukraine; (O.O.); (I.L.); (Y.H.); (V.K.); (A.Y.); (T.O.)
| | - Viktoriia Korniienko
- Biomedical Research Centre, Sumy State University, 40018 Sumy, Ukraine; (O.O.); (I.L.); (Y.H.); (V.K.); (A.Y.); (T.O.)
| | - Aziza Yusupova
- Biomedical Research Centre, Sumy State University, 40018 Sumy, Ukraine; (O.O.); (I.L.); (Y.H.); (V.K.); (A.Y.); (T.O.)
| | - Tetiana Oleshko
- Biomedical Research Centre, Sumy State University, 40018 Sumy, Ukraine; (O.O.); (I.L.); (Y.H.); (V.K.); (A.Y.); (T.O.)
| | - Rafal Banasiuk
- NanoWave, 02-676 Warsaw, Poland;
- Institute of Biotechnology and Molecular Medicine, 80-172 Gdańsk, Poland
| | - Marek Szkodo
- Mechanical Faculty, Gdańsk University of Technology, 80-233 Gdańsk, Poland;
| | - Igor Matros-Taranets
- Dnipro Medical Institute of Traditional and Nontraditional Medicine, 49005 Dnipro, Ukraine;
| | - Alicja Kazek-Kęsik
- Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland
- Correspondence: (A.K.-K.); (W.S.); (M.P.); Tel.: +48-32-237-2605 (W.S.)
| | - Wojciech Simka
- Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland
- NanoPrime, 39-200 Dębica, Poland
- Correspondence: (A.K.-K.); (W.S.); (M.P.); Tel.: +48-32-237-2605 (W.S.)
| | - Maksym Pogorielov
- Biomedical Research Centre, Sumy State University, 40018 Sumy, Ukraine; (O.O.); (I.L.); (Y.H.); (V.K.); (A.Y.); (T.O.)
- NanoPrime, 39-200 Dębica, Poland
- Correspondence: (A.K.-K.); (W.S.); (M.P.); Tel.: +48-32-237-2605 (W.S.)
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A Comprehensive Review on the Corrosion Pathways of Titanium Dental Implants and Their Biological Adverse Effects. METALS 2020. [DOI: 10.3390/met10091272] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The main aim of this work was to perform a comprehensive review of findings reported by previous studies on the corrosion of titanium dental implants and consequent clinical detrimental effects to the patients. Most studies were performed by in vitro electrochemical tests and complemented with microscopic techniques to evaluate the corrosion behavior of the protective passive oxide film layer, namely TiO2. Results revealed that bacterial accumulation, dietary, inflammation, infection, and therapeutic solutions decrease the pH of the oral environment leading to the corrosion of titanium. Some therapeutic products used as mouthwash negatively affect the corrosion behavior of the titanium oxide film and promote changes on the implant surface. In addition, toothpaste and bleaching agents, can amplify the chemical reactivity of titanium since fluor ions interacting with the titanium oxide film. Furthermore, the number of in vivo studies is limited although corrosion signs have been found in retrieved implants. Histological evaluation revealed titanium macro- and micro-scale particles on the peri-implant tissues. As a consequence, progressive damage of the dental implants and the evolution of inflammatory reactions depend on the size, chemical composition, and concentration of submicron- and nanoparticles in the surrounding tissues and internalized by the cells. In fact, the damage of the implant surfaces results in the loss of material that compromises the implant surfaces, implant-abutment connections, and the interaction with soft tissues. The corrosion can be an initial trigger point for the development of biological or mechanical failures in dental implants.
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Nishimura DA, Choi IGG, Arita ES, Cortes ARG. Estimating bone mineral density using MRI in medicine and dentistry: a literature review. Oral Radiol 2020; 37:366-375. [PMID: 32930913 DOI: 10.1007/s11282-020-00484-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/02/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Studies performed in the medical area have shown that an indirect diagnosis of bone mineral density (BMD) is feasible by assessing the amount of bone marrow fat with non-ionizing magnetic resonance imaging (MRI). In dentistry, radiographic methods are still the most used for alveolar bone diagnosis. The present literature review aimed at addressing the role of MRI in assessing BMD in medicine and dentistry. METHODS MEDLINE and EMBASE databases were searched for articles published up to 2019. RESULTS A total of 428 potentially eligible papers were screened. Of these, 397 were excluded after title, abstract and keyword assessment, yielding 31 papers that potentially met the inclusion criteria. Eleven studies were then excluded because their full texts did not discuss the role of MRI in the indirect diagnosis of BMD. As a result, a total of 20 studies were finally identified as eligible for inclusion in this literature review. Most studies found satisfactory accuracy of MRI for indirectly assessing BMD by quantifying bone mineral fat (BMF). However, only one of these studies was on dentistry. CONCLUSION Within the limitations of this study, the present findings suggest that MRI is accurate to indirectly estimate bone density by assessing BMF, and could be clinically relevant during dental treatment planning.
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Affiliation(s)
- Danielle Ayumi Nishimura
- Department of Stomatology, School of Dentistry, University of São Paulo (USP), Av. Prof. Lineu Prestes, 2227, São Paulo, 05508-000, Brazil.
| | - Isabela Goulart Gil Choi
- Department of Stomatology, School of Dentistry, University of São Paulo (USP), Av. Prof. Lineu Prestes, 2227, São Paulo, 05508-000, Brazil
| | - Emiko Saita Arita
- Department of Stomatology, School of Dentistry, University of São Paulo (USP), Av. Prof. Lineu Prestes, 2227, São Paulo, 05508-000, Brazil
| | - Arthur Rodriguez Gonzalez Cortes
- Department of Stomatology, School of Dentistry, University of São Paulo (USP), Av. Prof. Lineu Prestes, 2227, São Paulo, 05508-000, Brazil
- Department of Dental Surgery, Faculty of Dental Surgery, University of Malta, Msida, Malta
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Agnihotri R, Gaur S, Albin S. Nanometals in Dentistry: Applications and Toxicological Implications-a Systematic Review. Biol Trace Elem Res 2020; 197:70-88. [PMID: 31782063 DOI: 10.1007/s12011-019-01986-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 11/14/2019] [Indexed: 01/28/2023]
Abstract
Nanotechnology is a vital part of health care system, including the dentistry. This branch of technology has been incorporated into various fields of dentistry ranging from diagnosis to prevention and treatment. The latter involves application of numerous biomaterials that help in restoration of esthetic and functional dentition. Over the past decade, these materials were modified through the incorporation of metal nanoparticles (NP) like silver (Ag), gold (Au), titanium (Ti), zinc (Zn), copper (Cu), and zirconia (Zr). They enhanced antimicrobial, mechanical, and regenerative properties of these materials. However, lately, the toxicological implications of these nanometal particles have been realized. They were associated with cytotoxicity, genotoxicity altered inflammatory processes, and reticuloendothelial system toxicity. As dental biomaterials containing metal NPs remain functional in oral cavity over prolonged periods, it is important to know their toxicological effects in humans. With this background, the present systematic review is aimed to gain an insight into the plausible applications and toxic implications of nano-metal particles as related to dentistry.
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Affiliation(s)
- Rupali Agnihotri
- Department of Periodontology, Manipal College of Dental Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
| | - Sumit Gaur
- Department of Pedodontics and Preventive Dentistry, Manipal College of Dental Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India.
| | - Sacharia Albin
- Engineering Department, Norfolk State University, Norfolk, VA, 23504, USA
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Mistry S, Burman S, Roy S, Maitra NJ, Roy R, Chanda A. Surface characteristics of titanium dental implants with improved microdesigns: An in vivo study of their osseointegration performance in goat mandible. J Biomater Appl 2020; 35:799-813. [PMID: 32787493 DOI: 10.1177/0885328220947345] [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: 11/17/2022]
Abstract
Current trends in endosseous implant research are focused on the modification of microdesign of implants to achieve early and strong osseointegration. This study compares the influence of zinc doped hydroxyapatite (ZnHAp) coated, hydrothermally treated (HT) and machined Ti6Al4V (control) implants on osseointegration. The surface characterisation and microbial affinity test for implants were performed. Twenty seven (27) cylinders (3 types in each animal) were placed in the mandible of 9 black Bengal goats. Bone-implant interface was examined with histological, radiological parameters and scanning electron microscopy at 6, 12, and 24 weeks post-implantation. Surface roughness alterations of bone-separated implants were analysed by non-contact profilometer with time. The ZnHAp coated implants revealed direct and early bone-implant contact but high bacterial adherence and coating cracks. Low bacterial affinity and early strong bony integration was observed with HT implants. Poor bacterial affinity and delayed but strong fixation was evident with control implants. Based on the results of laboratory and animal experiments, we conclude that the hydrothermal modification of titanium implant is the more suitable way to achieve safe and effective osseointegration than the other two implant types for endosseous application.
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Affiliation(s)
- Surajit Mistry
- Department of Periodontics, Burdwan Dental College & Hospital, Burdwan, India
| | - Subhasish Burman
- Department of Periodontics, Burdwan Dental College & Hospital, Burdwan, India
| | - Subhasis Roy
- Department of Oral & Maxillofacial Surgery, Burdwan Dental College & Hospital, Burdwan, India
| | - Nilendu Jyoti Maitra
- Department of Oral & Maxillofacial Surgery, Burdwan Dental College & Hospital, Burdwan, India
| | - Rajiv Roy
- Department of VCC (Surgery & Radiology), West Bengal University of Animal & Fishery Sciences, Kolkata, India
| | - Abhijit Chanda
- Directorate of Research Extension & Farms, West Bengal University of Animal & Fishery Sciences, Kolkata, India
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Staehlke S, Haack F, Waldner AC, Koczan D, Moerke C, Mueller P, Uhrmacher AM, Nebe JB. ROS Dependent Wnt/β-Catenin Pathway and Its Regulation on Defined Micro-Pillars-A Combined In Vitro and In Silico Study. Cells 2020; 9:E1784. [PMID: 32726949 PMCID: PMC7464713 DOI: 10.3390/cells9081784] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/17/2020] [Accepted: 07/21/2020] [Indexed: 12/15/2022] Open
Abstract
The physico-chemical surface design of implants influences the surrounding cells. Osteoblasts on sharp-edged micro-topographies revealed an impaired cell phenotype, function and Ca2+ mobilization. The influence of edges and ridges on the Wnt/β-catenin pathway in combination with the cells' stress response has not been clear. Therefore, MG-63 osteoblasts were studied on defined titanium-coated micro-pillars (5 × 5 × 5 µm) in vitro and in silico. MG-63s on micro-pillars indicated an activated state of the Wnt/β-catenin pathway. The β-catenin protein accumulated in the cytosol and translocated into the nucleus. Gene profiling indicated an antagonism mechanism of the transcriptional activity of β-catenin due to an increased expression of inhibitors like ICAT (inhibitor of β-catenin and transcription factor-4). Cells on pillars produced a significant reactive oxygen species (ROS) amount after 1 and 24 h. In silico analyses provided a detailed view on how transcriptional activity of Wnt signaling is coordinated in response to the oxidative stress induced by the micro-topography. Based on a coordinated expression of regulatory elements of the Wnt/β-catenin pathway, MG-63s are able to cope with an increased accumulation of β-catenin on micro-pillars and suppress an unintended target gene expression. Further, β-catenin may be diverted into other signaling pathways to support defense mechanisms against ROS.
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Affiliation(s)
- Susanne Staehlke
- Department of Cell Biology, Rostock University Medical Center, Schillingallee 69, 18057 Rostock, Germany; (A.-C.W.); (C.M.); (P.M.); (J.B.N.)
| | - Fiete Haack
- Modeling and Simulation Group, Institute for Visual and Analytic Computing, University of Rostock, Albert-Einstein-Str. 22, 18059 Rostock, Germany; (F.H.); (A.M.U.)
| | - Anna-Christin Waldner
- Department of Cell Biology, Rostock University Medical Center, Schillingallee 69, 18057 Rostock, Germany; (A.-C.W.); (C.M.); (P.M.); (J.B.N.)
| | - Dirk Koczan
- Institute for Immunology, Core Facility for Microarray Analysis, Rostock University Medical Center, Schillingallee 70, 18057 Rostock, Germany;
| | - Caroline Moerke
- Department of Cell Biology, Rostock University Medical Center, Schillingallee 69, 18057 Rostock, Germany; (A.-C.W.); (C.M.); (P.M.); (J.B.N.)
| | - Petra Mueller
- Department of Cell Biology, Rostock University Medical Center, Schillingallee 69, 18057 Rostock, Germany; (A.-C.W.); (C.M.); (P.M.); (J.B.N.)
| | - Adelinde M. Uhrmacher
- Modeling and Simulation Group, Institute for Visual and Analytic Computing, University of Rostock, Albert-Einstein-Str. 22, 18059 Rostock, Germany; (F.H.); (A.M.U.)
- Department Science and Technology of Life, Light and Matter, University of Rostock, Albert-Einstein-Str. 25, 18059 Rostock, Germany
| | - J. Barbara Nebe
- Department of Cell Biology, Rostock University Medical Center, Schillingallee 69, 18057 Rostock, Germany; (A.-C.W.); (C.M.); (P.M.); (J.B.N.)
- Department Science and Technology of Life, Light and Matter, University of Rostock, Albert-Einstein-Str. 25, 18059 Rostock, Germany
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Single-cell adhesion of human osteoblasts on plasma-conditioned titanium implant surfaces in vitro. J Mech Behav Biomed Mater 2020; 109:103841. [PMID: 32543406 DOI: 10.1016/j.jmbbm.2020.103841] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 03/02/2020] [Accepted: 04/28/2020] [Indexed: 11/23/2022]
Abstract
OBJECTIVES This study aimed to demonstrate the effect of treating titanium-implant surfaces with plasma from two different sources on wettability and initial single-cell adhesion of human osteoblasts and to investigate whether aging affects treatment outcomes. METHODS Titanium disks with sandblasted and acid-etched (SLA) surfaces were treated with atmospheric pressure plasma (APP) and low-pressure plasma (LPP). For wetting behavior of the specimens after plasma treatment, the water contact angle was measured. The single-cell detachment force and amount of work of detachment of human osteoblasts were determined with single-cell force spectroscopy (SCFS). To evaluate the aging effect in APP-treated specimens, SCFS was conducted 10 and 60 min after treatment. RESULTS Significantly higher hydrophilicity was observed in the APP and LPP treatment groups than in the control group, but no significant difference was observed between the APP and LPP groups. No significant difference in cell-detachment force or work of detachment was observed, and there were no significant differences according to the conditioning mechanisms and storage time. SIGNIFICANCE Conditioning of the titanium surfaces with APP or LPP was not a significant influencing factor in the initial adhesion of the osteoblasts.
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Abstract
Dental implants are frequently used to support fixed or removable dental prostheses to replace missing teeth. The clinical success of titanium dental implants is owed to the exceptional biocompatibility and osseointegration with the bone. Therefore, the enhanced therapeutic effectiveness of dental implants had always been preferred. Several concepts for implant coating and local drug delivery had been developed during the last decades. A drug is generally released by diffusion-controlled, solvent-controlled, and chemical controlled methods. Although a range of surface modifications and coatings (antimicrobial, bioactive, therapeutic drugs) have been explored for dental implants, it is still a long way from designing sophisticated therapeutic implant surfaces to achieve the specific needs of dental patients. The present article reviews various interdisciplinary aspects of surface coatings on dental implants from the perspectives of biomaterials, coatings, drug release, and related therapeutic effects. Additionally, the various types of implant coatings, localized drug release from coatings, and how released agents influence the bone–implant surface interface characteristics are discussed. This paper also highlights several strategies for local drug delivery and their limitations in dental implant coatings as some of these concepts are yet to be applied in clinical settings due to the specific requirements of individual patients.
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Kang MH, Lee SJ, Lee MH. Bone remodeling effects of Korean Red Ginseng extracts for dental implant applications. J Ginseng Res 2020; 44:823-832. [PMID: 33192126 PMCID: PMC7655497 DOI: 10.1016/j.jgr.2020.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 05/09/2020] [Accepted: 05/15/2020] [Indexed: 01/09/2023] Open
Abstract
Background The formation of a nanotube layer on a titanium nanotube (N-Ti) plate facilitates an active reaction between bone cells and the material surface via efficient delivery of the surface materials of the dental implant into the tissues. Studies have reported that Korean Red Ginseng extracts (KRGEs) are involved in a variety of pharmacological activities: we investigated whether implantation with a KRGE-loaded N-Ti miniimplant affects osteogenesis and osseointegration. Methods KRGE-loaded nanotubes were constructed by fabrication on pure Ti via anodization, and MC3T3-E1 cells were cultured on the N-Ti. N-Ti implants were subsequently placed on a rat's edentulous mandibular site. New bone formation and bone mineral density were measured to analyze osteogenesis and osseointegration. Results KRGE-loaded N-Ti significantly increased the proliferation and differentiation of MC3T3-E1 cells compared with cells on pure Ti without any KRGE loading. After 1-4 weeks, the periimplant tissue in the edentulous mandibular of the healed rat showed a remarkable increase in new bone formation and bone mineral density. In addition, high levels of the bone morphogenesis protein-2 and bone morphogenesis protein-7, besides collagen, were expressed in the periimplant tissues. Conclusion Our findings suggest that KRGE-induced osteogenesis and osseointegration around the miniimplant may facilitate the clinical application of dental implants.
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Affiliation(s)
- Myong-Hun Kang
- Department of Dental Biomaterials and Institute of Biodegradable Materials, Institute of Oral Bioscience and School of Dentistry (Plus BK21 Program), Jeonbuk National University, Jeonju, Jeollabuk-do, Republic of Korea
| | - Sook-Jeong Lee
- Department of Bioactive Material Science, Jeonbuk National University, Jeonju, Jeollabuk-do, Republic of Korea
| | - Min-Ho Lee
- Department of Dental Biomaterials and Institute of Biodegradable Materials, Institute of Oral Bioscience and School of Dentistry (Plus BK21 Program), Jeonbuk National University, Jeonju, Jeollabuk-do, Republic of Korea
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Dhaliwal JS, David SRN, Zulhilmi NR, Sodhi Dhaliwal SK, Knights J, de Albuquerque Junior RF. Contamination of titanium dental implants: a narrative review. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2810-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
AbstractContamination of titanium dental implants may lead to implant failure. There are two major types of contaminants: the inorganic and organic contaminants. The inorganic contaminants mostly consist of elements such as calcium, phosphorus, chlorine, sulphur, sodium, silicon, fluorine and some organic carbons. Whereas organic contaminants consist of hydrocarbon, carboxylates, salts of organic acids, nitrogen from ammonium and bacterial cells/byproducts. Contaminants can alter the surface energy, chemical purity, thickness and composition of the oxide layer, however, we lack clinical evidence that contaminations have any effect at all. However, surface cleanliness seems to be essential for implant osseointegration.These contaminants may cause dental implants to fail in its function to restore missing teeth and also cause a financial burden to the patient and the health care services to invest in decontamination methods. Therefore, it is important to discuss the aetiology of dental implant failures. In this narrative review, we discuss two major types of contaminants: the inorganic and organic contaminants including bacterial contaminants. This review also aims to discuss the potential effect of contamination on Ti dental implants.
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A Review of In-Situ Grown Nanocomposite Coatings for Titanium Alloy Implants. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs4020041] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Composite coatings are commonly applied to medical metal implants in order to improve biocompatibility and/or bioactivity. In this context, two types of titanium-based composite coatings have been reviewed as biocompatible and anti-bacterial coatings. The different composites can be synthesised on the surface of titanium using various methods, which have their own advantages and disadvantages. Moving with the smart and nanotechnology, multifunctional nanocomposite coatings have been introduced on implants and scaffolds for tissue engineering with the aim of providing more than one properties when required. In this context, titanium dioxide (TiO2) nanotubes have been shown to enhance the properties of titanium-based implants as part of nanocomposite coatings.
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Sumathra M, Rajan M, Amarnath Praphakar R, Marraiki N, Elgorban AM. In Vivo Assessment of a Hydroxyapatite/κ-Carrageenan-Maleic Anhydride-Casein/Doxorubicin Composite-Coated Titanium Bone Implant. ACS Biomater Sci Eng 2020; 6:1650-1662. [PMID: 33455363 DOI: 10.1021/acsbiomaterials.9b01750] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Here, we focus on the fabrications of an osteosarcoma implant for bone repair via the development of a hydroxyapatite/κ-carrageenan-maleic anhydride/casein with doxorubicin (HAP/κ-CA-MA-CAS/DOX) composite-deposited titanium (Ti) plate. The HAP/κ-CA-MA-CAS/DOX material was coated on the Ti plate through the EPD method (electrophoretic deposition), applying direct current (DC) signals to deposit the composite on the surface of the Ti plate. The physicochemical and morphological possessions and biocompatibility in vitro of the prepared nanocomposite were examined to assess its prospective effectiveness for purposes of bone regeneration. Excellent biocompatibility and elevated osteoconductivity were confirmed using MG63 osteoblast-like cells. In vivo studies were performed at tibia sites in Wistar rats, and rapid bone regeneration was detected at four weeks in defective bone. Overall, the studies demonstrate that the HAP/κ-CA-MA-CAS/DOX composite enhances the biocompatible and cell-stimulating biointerface of Ti metallic implants. As such, HAP/κ-CA-MA-CAS/DOX implants are viable prospects for osteosarcoma-affected bone regeneration.
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Affiliation(s)
- Murugan Sumathra
- Biomaterials in Medicinal Chemistry Laboratory, Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
| | - Mariappan Rajan
- Biomaterials in Medicinal Chemistry Laboratory, Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
| | - Rajendran Amarnath Praphakar
- Biomaterials in Medicinal Chemistry Laboratory, Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
| | - Najat Marraiki
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdallah M Elgorban
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.,Center of Excellence in Biotechnology Research, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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Chen J, Xiao Z, Yangpeng S, Deng F, Zhiguang Z. Production of inter-connective porous dental implants by computer-aided design and metal three-dimensional printing. J Biomater Appl 2020; 34:1227-1238. [PMID: 31918619 DOI: 10.1177/0885328219899523] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Jianyu Chen
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Zhang Xiao
- Guangzhou Janus Biotechnology Co. Ltd., Guangzhou, Guangdong Province, China.,Foshan Angels Biotechnology Co. Ltd., Foshan, China
| | - Sun Yangpeng
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Feilong Deng
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Zhang Zhiguang
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
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38
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Odusote JK, Danyuo Y, Baruwa AD, Azeez AA. Synthesis and characterization of hydroxyapatite from bovine bone for production of dental implants. J Appl Biomater Funct Mater 2019; 17:2280800019836829. [PMID: 31041872 DOI: 10.1177/2280800019836829] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
This paper presents a study on the synthesis and characterization of hydroxyapatite that can be used to produce dental implants or serves as a replacement for other body hard tissues. The bioceramic material (hydroxyapatite) was derived from bovine bone samples after they were de-fatted and processed to produce particles measuring less than 250 μm. Processed bone powders were calcinated at 750℃ to obtain calcium phosphate compound (hydroxyapatite). This indicated complete elimination of the organic phase of the bone. The synthesized hydroxyapatite was physico-chemically characterized using Fourier transform infrared spectroscopy (FTIR), an optical microscope and scanning electron microscopy (SEM). Hydroxyapatite powder was sintered into a block and then characterized mechanically by measuring its hardness using a Rockwell hardness testing machine. The hydrophilicity and hydrophobicity of the sintered blocked specimens were studied. The average wettability of the substrate, which was a characteristic of the contact angle, was found to be approximately 31.73 degrees. This contact angle value is a measure of the material hydrophilicity. The biostability/corrosive resistance of the sintered samples was simulated in vitro in phosphate buffered saline solution (pH 7.4) by incubating in an optical incubator shaker (set at 60 revolutions per minute) to mimic physiological conditions. The results showed that hydroxyapatite can be extracted economically from a natural source such as bovine bone and can be employed as a restorative biomaterial for dental implants and hard tissue replacement.
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Affiliation(s)
- Jamiu K Odusote
- 1 Department of Materials and Metallurgical Engineering, University of Ilorin, Ilorin, Nigeria
| | - Y Danyuo
- 2 Department of Mechanical Engineering, Ashesi University College, Berekuso, Ghana
| | - Abdulazeez D Baruwa
- 1 Department of Materials and Metallurgical Engineering, University of Ilorin, Ilorin, Nigeria
| | - Akeem A Azeez
- 1 Department of Materials and Metallurgical Engineering, University of Ilorin, Ilorin, Nigeria
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Thavanayagam G, Swan J. Optimizing hydride-dehydride Ti-6Al-4V feedstock composition for titanium powder injection moulding. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.07.091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Raesi Estabragh A, Golestaneh A, Maleki Gorji M, Kheiri L. Effective Factors in Implant System Selection by Dentists in Kerman in 2018: A Cross-Sectional Study. JOURNAL OF RESEARCH IN DENTAL AND MAXILLOFACIAL SCIENCES 2019. [DOI: 10.29252/jrdms.4.4.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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41
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Ozdogan MS, Gumusok M, Ertem YS, Omeroglu A, Erdem M. Assessment of Expectation, Attitude, and Preconceptions in A Group Patient Applying for Dental Implant Treatment. CLINICAL AND EXPERIMENTAL HEALTH SCIENCES 2019. [DOI: 10.33808/clinexphealthsci.599952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Lin G, Zhou C, Lin M, Xu A, He F. Strontium‐incorporated titanium implant surface treated by hydrothermal reactions promotes early bone osseointegration in osteoporotic rabbits. Clin Oral Implants Res 2019; 30:777-790. [PMID: 31104360 DOI: 10.1111/clr.13460] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 04/27/2019] [Accepted: 05/07/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Guofen Lin
- Department of General Dentistry, The Affiliated Stomatology Hospital, School of Medicine Zhejiang University Hangzhou China
| | - Chuan Zhou
- Department of Prosthodontics, The Affiliated Stomatology Hospital, School of Medicine Zhejiang University Hangzhou China
| | - Mengna Lin
- Department of Prosthodontics, The Affiliated Stomatology Hospital, School of Medicine Zhejiang University Hangzhou China
| | - Antian Xu
- Department of Prosthodontics, The Affiliated Stomatology Hospital, School of Medicine Zhejiang University Hangzhou China
| | - Fuming He
- Department of Prosthodontics, The Affiliated Stomatology Hospital, School of Medicine Zhejiang University Hangzhou China
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Iwatsu M, Kanetaka H, Mokudai T, Ogawa T, Kawashita M, Sasaki K. Visible light‐induced photocatalytic and antibacterial activity of N‐doped TiO
2. J Biomed Mater Res B Appl Biomater 2019; 108:451-459. [DOI: 10.1002/jbm.b.34401] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 03/10/2019] [Accepted: 04/22/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Misato Iwatsu
- Graduate School of DentistryTohoku University Sendai Japan
| | | | | | - Toru Ogawa
- Graduate School of DentistryTohoku University Sendai Japan
| | | | - Keiichi Sasaki
- Graduate School of DentistryTohoku University Sendai Japan
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Rao S, Hashemi Astaneh S, Villanueva J, Silva F, Takoudis C, Bijukumar D, Souza JCM, Mathew MT. Physicochemical and in-vitro biological analysis of bio-functionalized titanium samples in a protein-rich medium. J Mech Behav Biomed Mater 2019; 96:152-164. [PMID: 31035066 DOI: 10.1016/j.jmbbm.2019.03.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 03/17/2019] [Accepted: 03/19/2019] [Indexed: 01/04/2023]
Abstract
The long-term survivability of the implants is strongly influenced by the osseointegration aspects of the metal-bone interface. In this study, biological materials such as fibrinogen and fibrin are used to functionalize titanium surfaces to enhance the ability of implants to interact with human tissues for accelerated osseointegration. The biofunctionalized samples that were assessed by White Light Microscope, Scanning Electron Microscope and Water Contact Angle for surface properties proved samples etched with HF/HNO3 to be better than HCl/H2SO4 in terms of having optimum roughness and hydrophilicity for our further experiments. To further investigate the in vitro osseointegration of the biofunctionalized samples, Osteoblasts were cultured on the surfaces to assess cell proliferation, adhesion, gene expression as well as the mineralization process. Further bacterial adhesion (Enterococcus faecalis) and electrochemical evaluation of surface coating stability were carried out. Results of the study show that the biofunctionalized surfaces provided high cell proliferation, adherence, gene expression, and mineralization compared to other control surfaces hence proving them to have efficient and enhanced osseointegration. Also, bacterial adhesion studies show that there is no augmented growth of bacteria on the biofunctionalized samples in comparison to control surfaces. Electrochemical studies proved the existence of a stable protein layer on the bio functionalized surfaces. Such a method can reduce the time for osseointegration that can decrease risks in early failures of implants due to its enhanced hydrophilicity and cytocompatibility.
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Affiliation(s)
- Shradha Rao
- Department of Biomedical Science, University of Illinois College of Medicine at Rockford, USA
| | - Sarah Hashemi Astaneh
- Department of Chemical Engineering, the University of Illinois at Chicago, (UIC), Chicago, USA
| | - Jose Villanueva
- Department of Restorative Dentistry, College of Dentistry, UIC, Chicago, IL, USA
| | - Filipe Silva
- Center for MicroElectromechanical Systems (CMEMS-UMINHO), Universidade do Minho, Portugal
| | - Christos Takoudis
- Department of Chemical Engineering, the University of Illinois at Chicago, (UIC), Chicago, USA; Department of Bioengineering, University of Illinois at Chicago (UIC), Chicago, USA
| | - Divya Bijukumar
- Department of Biomedical Science, University of Illinois College of Medicine at Rockford, USA
| | - Júlio C M Souza
- Department of Biomedical Science, University of Illinois College of Medicine at Rockford, USA; Department of Dental Sciences, University Institute of Health Sciences (IUCS-CESPU), Grandra 4585-116, Portugal
| | - Mathew T Mathew
- Department of Biomedical Science, University of Illinois College of Medicine at Rockford, USA; Department of Bioengineering, University of Illinois at Chicago (UIC), Chicago, USA.
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Lu X, Zhang W, Liu Z, Ma S, Sun Y, Wu X, Zhang X, Gao P. Application of a Strontium-Loaded, Phase-Transited Lysozyme Coating to a Titanium Surface to Enhance Osteogenesis and Osteoimmunomodulation. Med Sci Monit 2019; 25:2658-2671. [PMID: 30973161 PMCID: PMC6476409 DOI: 10.12659/msm.914269] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background To fabricate strontium (Sr)-incorporated titanium (Ti) surfaces by a novel 1-step phase-transited lysozyme (PTL) treatment, and investigate the effects of the prepared samples on osteogenesis and osteoimmunoregulation. Material/Methods Five groups of titanium specimens were prepared, including Ti, PTL, PTL@10Sr (PTL coating with 10 mg/mL Sr), PTL@20Sr PTL coating with 20 mg/mL Sr), and PTL@50Sr (PTL coating with 50 mg/mL Sr) groups. Behaviors of bone marrow mesenchymal stem cells (BMSCs) such as initial attachment, spread, proliferation, and migration, on different surfaces were examined by immunofluorescence, MTS assay, and Transwell system. Then the osteogenic differentiation of BMSCs was detected. When an immune response was factored in, the polarization of macrophages induced by the prepared surfaces was detected by real-time PCR, and the response of BMSCs to macrophage-conditioned medium was assessed in terms of cell migration and osteogenic differentiation. Finally, an in vivo study was performed, using the rat femora implant model, to evaluate the potential for osteogenic induction and osteoimmunoregulation of materials. Results Our in vitro experiments indicated that PTL coating could improve cell spread and adhesion, and the stable Sr release of PTL@Sr layers could promote cell migration and osteogenesis. Moreover, PTL@Sr surface could regulate the immune response of macrophages resulting in enhanced BMSCs recruitment and osteogenic differentiation. The in vivo evaluation showed less inflammatory infiltration and improved bone formation in the PTL@20Sr group. Conclusions The Sr-loaded PTL layers have greater potential for the induction of osteogenic differentiation of BMSCs, meanwhile Sr-loaded PTL layers could adjust the immune response and thus promote osteogenesis both in vitro and in vivo.
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Affiliation(s)
- Xin Lu
- Tianjin Medical University School and Hospital of Stomatology, Tianjin, China (mainland)
| | - Wenxin Zhang
- Tianjin Medical University School and Hospital of Stomatology, Tianjin, China (mainland)
| | - Zihao Liu
- Tianjin Medical University School and Hospital of Stomatology, Tianjin, China (mainland)
| | - Shiqing Ma
- Tianjin Medical University School and Hospital of Stomatology, Tianjin, China (mainland)
| | - Yingchun Sun
- Tianjin Medical University School and Hospital of Stomatology, Tianjin, China (mainland)
| | - Xudong Wu
- Department of Cell Biology, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Tianjin Key Laboratory of Medical Epigenetics, Tianjin Medical University, Tianjin, China (mainland)
| | - Xu Zhang
- Tianjin Medical University School and Hospital of Stomatology, Tianjin, China (mainland)
| | - Ping Gao
- Tianjin Medical University School and Hospital of Stomatology, Tianjin, China (mainland)
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Seyedmajidi S, Seyedmajidi M, Zabihi E, Hajian-Tilaki K. A comparative study on cytotoxicity and genotoxicity of the hydroxyapatite-bioactive glass and fluorapatite-bioactive glass nanocomposite foams as tissue scaffold for bone repair. J Biomed Mater Res A 2018; 106:2605-2612. [PMID: 29896905 DOI: 10.1002/jbm.a.36452] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 03/05/2018] [Accepted: 05/03/2018] [Indexed: 11/08/2022]
Abstract
Considering to the possibility of cellular and genetic damage by the implant materials in the patient and the clinician, the safety of the biomaterials should be evaluated. The purpose of this study was to compare the cytotoxicity and genotoxicity induced by two nanocomposites, hydroxyapatite/bioactive glass (HA/BG) and fluorapatite/bioactive glass (FA/BG) in vitro. Biomaterial extracts (BMEX, 100%) were prepared by incubating 100 mg/mL of each biomaterial powder in complete culture medium (RPMI1640 + 10% FBS) for 72 h. Saos-II cells were exposed to different concentrations of BMEXs for different periods of time and evaluated at the end of each period. According to 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay results, both BMEXs at low concentrations (<25%) has no inhibitory effects on the cells growth. After 24 h of exposure, only HA/BG BMEX at 100% concentration showed significant cytotoxic effect. After 48 and 72 h, both HA/BG and FA/BG BMEXs showed similar cytotoxic effect at concentration higher than 75 and 50%, respectively. The results of the comet assay showed that the tail elongation, and proportionally DNA damage, increased in a dose/time dependently fashion with BMEXs exposure. Based on low and similar cytotoxicity and genotoxicity profiles on the Saos-II cell line, it could be concluded that FA/BG, like HA/BG, could be a good candidate for further in vivo biocompatibility studies to be used in bone tissue repair. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 2605-2612, 2018.
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Affiliation(s)
- Seyedali Seyedmajidi
- Dental Materials Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Maryam Seyedmajidi
- Dental Materials Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Ebrahim Zabihi
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Karimollah Hajian-Tilaki
- Department of Biostatistics and Epidemiology, School of Medicine, Babol University of Medical Sciences, Babol, Iran
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Surface modification of titanium with hydroxyapatite layer induced by phase-transited lysozyme coating. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:206-215. [PMID: 30184744 DOI: 10.1016/j.msec.2018.05.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 04/04/2018] [Accepted: 05/15/2018] [Indexed: 12/15/2022]
Abstract
Surface modification of titanium with a hydroxyapatite (HAP) coating can improve the bioactivity of pristine titanium. The traditional techniques for coating HAP on titanium involve nonmild treatments using strong bases or acids or high temperatures. In this study, the coating of HAP was carried out by a novel methodology called phase-transited lysozyme-assisted hydroxyapatite formation (PAH); in this process of biomimetic mineralization, the abundant functional carboxyl groups of phase-transited lysozyme (PTL) were responsible for the nucleation of HAP crystals by concentrating Ca2+ ions at the interface between PTL and CaCl2 solution and for the subsequent growth of HAP crystals occurring in simulated body fluid (SBF). In vitro and in vivo experiments verified that the surface of titanium modified with the HAP/PTL-Ti multilayer was endowed with improved biocompatibility and osteoinductivity compared with those of pristine titanium. Therefore, PAH is a simple, rapid, low-cost and green process for the surface modification of titanium with an HAP coating and thus will be a promising methodology for the surface modification of titanium implants.
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Dos Santos ML, Dos Santos Riccardi C, de Almeida Filho E, Guastaldi AC. Sol-gel based calcium phosphates coatings deposited on binary Ti-Mo alloys modified by laser beam irradiation for biomaterial/clinical applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:82. [PMID: 29892909 DOI: 10.1007/s10856-018-6091-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 05/24/2018] [Indexed: 06/08/2023]
Abstract
Ti-15Mo alloy samples were irradiated by pulsed Yb: YAG laser beam under air and atmospheric pressure. Calcium phosphate coatings were deposited on the irradiated surfaces by the sol-gel method. The sol was prepared from the precursors Ca (NO3)2.4H2 O and H3 PO4. The modified surfaces were submitted to heat treatment conditions at 350 and 600 °C. The results showed that the two conditions established have a sufficient energy to promote ablation on the laser beam irradiated surfaces. Likewise, it has been demonstrated the processes of fusion and fast solidification from the laser beam irradiation, under ambient atmosphere, inducing the formation of stoichiometric TiO2 and non-stoichiometric titanium oxides, including Ti3O5, TiO, Ti3O and Ti6O with different oxide percentages depending on the fluency used. Besides that, laser modification has allowed a clean and reproducible process, providing no traces of contamination, an important feature for clinical applications. The physico-chemical and morphological properties indicated the formation of a mixture of phases: calcium pyrophosphate, hydroxyapatite and β-TCP for the procedure (PA: calcination temperature), whereas HA (hydroxyapatite) and β-TCP (tricalcium phosphate) were obtained by the procedure (PB: calcination temperature). Therefore, it was possible to obtain a Ti-15Mo alloy surface consisted on calcium phosphate ceramics of biological interest using the procedure (PB). Thus, the laser beam irradiation associated to bioactive coatings of calcium phosphates of biological interest have shown to be promising and economically feasible for use in dental and orthopedic implants.
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Affiliation(s)
- Marcio Luiz Dos Santos
- Center of Natural and Human Sciences, Federal University of ABC - UFABC, 09210-580, Santo André, São Paulo, Brazil.
- Biotechnology and Innovation in Health Program and Master Professional in Pharmacy Program - Anhanguera University of São Paulo (UNIAN - SP), 05145-200, São Paulo, SP, Brazil.
| | - Carla Dos Santos Riccardi
- College of Agricultural Sciences, Paulista State University - UNESP, 18610-307, Botucatu, São Paulo, Brazil
| | - Edson de Almeida Filho
- Institute of Chemistry, 14800-060, Biomaterials Group, Paulista State University - UNESP, Araraquara, Brazil
| | - Antonio C Guastaldi
- Institute of Chemistry, 14800-060, Biomaterials Group, Paulista State University - UNESP, Araraquara, Brazil
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Yazdani J, Ahmadian E, Sharifi S, Shahi S, Maleki Dizaj S. A short view on nanohydroxyapatite as coating of dental implants. Biomed Pharmacother 2018; 105:553-557. [PMID: 29886376 DOI: 10.1016/j.biopha.2018.06.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Revised: 06/01/2018] [Accepted: 06/02/2018] [Indexed: 02/01/2023] Open
Abstract
INTRODUCTION Titanium based (Ti-based) materials have been used as dental implants due to their high biocompatibility, good mechanical strength and ideal osseointegration properties. Osseointegration of an implant is dependent on surface characteristics such as surface chemistry and topography. Nanotechnology has presented new and interesting applications in dentistry in recent years. The presence of nanoparticles on the implant surface can affect both the topography and surface chemistry, leading to different and outstanding specifications for implant. METHOD A literature review was performed in electronic databases by means of MeSH keywords to collect relevant published literature in English about the effect of nanohydroxyapatite on osseointegration of titanium implants. No limitations on publication date were imposed. Data regarding titanium implants; nanotechnology; nanohydroxyapatite; osseointegration and cell attachment were collected and reviewed. RESULTS AND CONCLUSION According to reviewed literature, nanohydroxyapatites have a nanostructured surface with higher surface area and then higher reactivity, letting them to bind to bone creating a biomimetic coating on implants. However, more studies are needed on the cell-substrate interface to develop an effective implant due to the interaction of the cells and the biomaterial surface after the implantation.
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Affiliation(s)
- Javad Yazdani
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elham Ahmadian
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Simin Sharifi
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shahriar Shahi
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Faculty of Dentistry, Department of Endodontics, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Solmaz Maleki Dizaj
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.
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Preferred Source and Perceived Need of More Information about Dental Implants by the Undergraduate Dental Students of Nepal: All Nepal Survey. Int J Dent 2018; 2018:6794682. [PMID: 29713346 PMCID: PMC5866872 DOI: 10.1155/2018/6794682] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 02/20/2018] [Indexed: 01/13/2023] Open
Abstract
Objectives This study was conducted to know the preferred source and perceived need of more information about dental implants by the undergraduate students of Nepal and their association with academic levels and gender. Materials and Methods It was conducted in all the dental colleges of Nepal from June 2016 to June 2017 after taking ethical clearance and approval from the research committee of BPKIHS. It included all those who were present at the time of survey. Data collection was done through a cross-sectional questionnaire survey during the academic schedule of the colleges, supervised and monitored by the investigators themselves. The collected data were coded and entered in Microsoft excel 2013, and statistical analysis was done by SPSS 20 version. Result A majority of the respondents agreed that they were not provided with sufficient information about implant treatment procedures during their BDS program (65.3%), would like more to be provided in the curriculum (95.1%), and would like to get additional reliable information from dental consultants and specialists (40.7%) and training on it from fellowship programs conducted by universities (39.2%). Significant association was seen between the responses and academic levels. Conclusion Undergraduate dental students of Nepal want more information about dental implants through various means.
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