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Cionca N, Meyer J, Michalet S, Varesio E, Hashim D. Quantification of titanium and zirconium elements in oral mucosa around healthy dental implants: a case-control pilot study. Clin Oral Investig 2023; 27:4715-4726. [PMID: 37270723 PMCID: PMC10415439 DOI: 10.1007/s00784-023-05099-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 05/29/2023] [Indexed: 06/05/2023]
Abstract
OBJECTIVES Metallic particles are detected in different sites of the oral cavity, mainly in patients with peri-implantitis lesions. The aim of this pilot study was to analyze the levels of titanium and zirconium elements in the oral mucosa around healthy implants and to investigate the impact of titanium exogenous contamination on the measurements. MATERIALS AND METHODS Forty-one participants were included in this three-phase study. Two groups of subjects were defined according to presence of titanium or zirconia implants (n: 20) or without any implants nor metallic restorations (n:21). Thirteen patients (n: 5 with zirconia implant; n: 3 with titanium implants; n: 5 control group) took part to the first part designed to optimize and validate the method of detecting titanium (Ti) and zirconium (Zr) elements in the oral mucosa and gingival tissues by the Inductively Coupled Plasma Mass Spectrometry (ICPMS). The second phase compared the levels of Ti and Zr concentrations in patients with implants (n: 12) and without implants (n: 6) who were controlled for their intake of titanium dioxide (TiO2). The last step included ten control subjects without any metallic devices to measure the concentration of Ti and Zr before and after having candies containing TiO2. RESULTS In the first phase, concentrations of Ti and Zr were below the limit of detection (LOD) in most cases, 0.18 μg/L and 0.07 μg/L respectively. In the titanium group, two out of three subjects displayed concentrations above the LOD, 0.21 μg/L and 0.66 μg/L. Zr element was only found in patients with zirconia implants. After controlling the intake of TiO2, all concentrations of Ti and Zr were below the limit of quantification (LOQ). Moreover, in patients with no implants, the Ti concentration in gingiva cells was superior for 75% of the samples after having a TiO2 diet. CONCLUSIONS Zirconium was only found in patients with zirconia implants, whereas titanium was detected in all groups even in subjects with no titanium implants. Zirconium and titanium elements were not detected in patients who were controlled for their intake of food and their use of toothpaste irrespective of the presence of implants or not. For 70% of the patients, the titanium detection was directly influenced by the intake of TiO2 contained candies. CLINICAL RELEVANCE When analyzing titanium particles, it is necessary to pay attention to the risk of contamination bias brought by external products. When this parameter was controlled, no titanium particles were detected around clinically healthy implants.
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Affiliation(s)
- Norbert Cionca
- Division of Regenerative Dental Medicine and Periodontology, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Julien Meyer
- Mass Spectrometry Core Facility (MZ 2.0), Faculty of Sciences, University of Geneva, Geneva, Switzerland
| | - Sophie Michalet
- Mass Spectrometry Core Facility (MZ 2.0), Faculty of Sciences, University of Geneva, Geneva, Switzerland
| | - Emmanuel Varesio
- Mass Spectrometry Core Facility (MZ 2.0), Faculty of Sciences, University of Geneva, Geneva, Switzerland
| | - Dena Hashim
- Division of Regenerative Dental Medicine and Periodontology, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
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Poli PP, Manfredini M, Oliva N, Bettini S, Damiani G, Goldoni R, Strambini L, Casati S, Del Fabbro M, Tartaglia GM. Detection and sensing of oral xenobiotics in edentulous patients rehabilitated with titanium dental implants: Insights from a scoping review. J Prosthet Dent 2023:S0022-3913(23)00342-6. [PMID: 37423787 DOI: 10.1016/j.prosdent.2023.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 05/16/2023] [Accepted: 05/16/2023] [Indexed: 07/11/2023]
Abstract
STATEMENT OF PROBLEM Titanium has been considered the standard element in implant manufacturing. Recent studies have evaluated the role of titanium as a biological modulator of oral health. However, evidence regarding the association between the release of metal particles and peri-implantitis is lacking. PURPOSE The purpose of this scoping review was to evaluate the literature regarding the release of metal particles in peri-implant tissues correlated with the methods of detection and the local and systemic implications. MATERIAL AND METHODS The study was performed in adherence with the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guidelines and was registered with the National Institute for Health Research PROSPERO (Submission No. 275576; ID: CRD42021275576). A systematic search was conducted in the Cochrane Central Register of Controlled Trials, EMBASE, MEDLINE via PubMed, Scopus, and Web of Science bibliographic databases, complemented by a manual evaluation. Only in vivo human studies written in the English language and published between January 2000 and June 2022 were included. RESULTS In total, 10 studies were included according to eligibility criteria. Different tissues and analytic techniques were reported: the characterization technique most used was inductively coupled plasma mass spectrometry. All 10 studies analyzed the release of metal particles in patients with dental implants, continuously detecting titanium. None of the studies reported a significant association between metal particles and biological effects. CONCLUSIONS Titanium is still considered the material of choice in implant dentistry, despite the detection of metal particles in peri-implant tissues. Further studies are necessary to evaluate the association between analytes and local health or inflammatory status.
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Affiliation(s)
- Pier Paolo Poli
- Research Fellow, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy; Research Fellow, Implant Center for Edentulism and Jawbone Atrophies, Maxillofacial Surgery and Odontostomatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Mattia Manfredini
- PhD Student, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy; PhD Student, Implant Center for Edentulism and Jawbone Atrophies, Maxillofacial Surgery and Odontostomatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - Nadim Oliva
- Resident, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Sofia Bettini
- Resident, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy; Resident, Implant Center for Edentulism and Jawbone Atrophies, Maxillofacial Surgery and Odontostomatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Giovanni Damiani
- Assistant Professor, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy; Assistant Professor, Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua, Italy; Assistant Professor, Division of Clinical Dermatology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Riccardo Goldoni
- PhD Student, Department of Electronics, Information and Bioengineering (DEIB), Politecnico Di Milano, Milan, Italy; PhD Student, National Research Council, Department of Electronics, Information and Bioengineering (DEIB), Politecnico di Milano, Milan, Italy
| | - Lucanos Strambini
- Research Fellow, National Research Council, Department of Electronics, Computer and Telecommunication Engineering (CNR-IEIIT), Milan, Italy
| | - Sara Casati
- Research Fellow, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Massimo Del Fabbro
- Associate Professor, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy; Associate Professor, Maxillofacial Surgery and Odontostomatology Unit, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Gianluca M Tartaglia
- Associate Professor, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy; Associate Professor, Maxillofacial Surgery and Odontostomatology Unit, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy
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Enhanced Corrosion Resistance and Local Therapy from Nano-Engineered Titanium Dental Implants. Pharmaceutics 2023; 15:pharmaceutics15020315. [PMID: 36839638 PMCID: PMC9963924 DOI: 10.3390/pharmaceutics15020315] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/12/2023] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
Titanium is the ideal material for fabricating dental implants with favorable biocompatibility and biomechanics. However, the chemical corrosions arising from interaction with the surrounding tissues and fluids in oral cavity can challenge the integrity of Ti implants and leach Ti ions/nanoparticles, thereby causing cytotoxicity. Various nanoscale surface modifications have been performed to augment the chemical and electrochemical stability of Ti-based dental implants, and this review discusses and details these advances. For instance, depositing nanowires/nanoparticles via alkali-heat treatment and plasma spraying results in the fabrication of a nanostructured layer to reduce chemical corrosion. Further, refining the grain size to nanoscale could enhance Ti implants' mechanical and chemical stability by alleviating the internal strain and establishing a uniform TiO2 layer. More recently, electrochemical anodization (EA) has emerged as a promising method to fabricate controlled TiO2 nanostructures on Ti dental implants. These anodized implants enhance Ti implants' corrosion resistance and bioactivity. A particular focus of this review is to highlight critical advances in anodized Ti implants with nanotubes/nanopores for local drug delivery of potent therapeutics to augment osseo- and soft-tissue integration. This review aims to improve the understanding of novel nano-engineered Ti dental implant modifications, focusing on anodized nanostructures to fabricate the next generation of therapeutic and corrosion-resistant dental implants. The review explores the latest developments, clinical translation challenges, and future directions to assist in developing the next generation of dental implants that will survive long-term in the complex corrosive oral microenvironment.
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Ivanovski S, Bartold PM, Huang Y. The role of foreign body response in peri-implantitis: What is the evidence? Periodontol 2000 2022; 90:176-185. [PMID: 35916872 PMCID: PMC9804527 DOI: 10.1111/prd.12456] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Historically, there has been broad consensus that osseointegration represents a homeostasis between a titanium dental implant and the surrounding bone, and that the crestal bone loss characteristic of peri-implantitis is a plaque-induced inflammatory process. However, this notion has been challenged over the past decade by proponents of a theory that considers osseointegration an inflammatory process characterized by a foreign body reaction and peri-implant bone loss as an exacerbation of this inflammatory response. A key difference in these two schools of thought is the perception of the relative importance of dental plaque in the pathogenesis of crestal bone loss around implants, with obvious implications for treatment. This review investigates the evidence for a persistent foreign body reaction at osseointegrated dental implants and its possible role in crestal bone loss characteristic of peri-implantitis. Further, the role of implant-related material release within the surrounding tissue, particularly titanium particles and corrosion by-products, in the establishment and progression in peri-implantitis is explored. While it is acknowledged that these issues require further investigation, the available evidence suggests that osseointegration is a state of homeostasis between the titanium implant and surrounding tissues, with little evidence that a persistent foreign body reaction is responsible for peri-implant bone loss after osseointegration is established. Further, there is a lack of evidence for a unidirectional causative role of corrosion by-products and titanium particles as possible non-plaque related factors in the etiology of peri-implantitis.
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Affiliation(s)
- Sašo Ivanovski
- School of DentistryThe University of QueenslandHerstonQueenslandAustralia
| | - Peter Mark Bartold
- School of DentistryUniversity of AdelaideAdelaideSouth AustraliaAustralia
| | - Yu‐Sheng Huang
- School of DentistryThe University of QueenslandHerstonQueenslandAustralia
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Evaluation of metal concentrations in hair and nails after dental implant placement. J Prosthet Dent 2021; 128:625-631. [PMID: 33712311 DOI: 10.1016/j.prosdent.2020.12.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 12/25/2020] [Accepted: 12/28/2020] [Indexed: 11/22/2022]
Abstract
STATEMENT OF PROBLEM The accumulation of the elements contained in Ti6Al4V, the mostly used titanium alloy for dental implants, in epithelial extensions requires investigation. Studies evaluating the metals in dental implants in the hair and nails of patients with dental implants are lacking. PURPOSE The purpose of this clinical research was to measure the levels of titanium (Ti), aluminum (Al), and vanadium (V) in the hair and nails of patients treated with grade 5 Ti alloy dental implants. MATERIAL AND METHODS Ti, Al, and V elemental levels in the hair and nail samples of 33 participants treated with grade 5 Ti alloy dental implants were measured by using an inductively coupled plasma mass spectrometer. RESULTS The results revealed a statistically significant increase in the amount of Ti in nail samples after implant surgery (P=.01), but no statistically significant increases in the amounts of Al or V in nail samples (P=.48, P=.645). In hair samples, the increase in Ti, Al, and V was not statistically significant (P=.728, P=.221, P=.376). The correlation between the amount of change in the elements in implants and the contact areas was weak for hair (Al, r=0.114; Ti, r=0.361; V, r=0.377) and for nails (Al, r=0.127; Ti, r=0.116; V, r=0.058). CONCLUSIONS After the placement of dental implants made of grade 5 Ti alloy, minimal Al and V accumulated in hair and nails.
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Titanium Corrosion in Peri-Implantitis. MATERIALS 2020; 13:ma13235488. [PMID: 33276474 PMCID: PMC7730765 DOI: 10.3390/ma13235488] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/10/2020] [Accepted: 11/20/2020] [Indexed: 11/17/2022]
Abstract
Titanium (Ti) corrodes clinically in the presence of bacteria. We investigated this phenomenon as a function of Ti particles found in biopsied tissues around peri-implantitis sites and surface roughness of failed Ti implants. Tissue biopsies were surgically collected from peri-implantitis sites, processed, and embedded in resin. The resin-embedded samples were hand trimmed to the region of interest and semi-thick (500 nm) sections were collected onto coverslips. One section was toluidine blue post-stained as a reference. The remainder sections were left unstained for energy-dispersive X-ray spectroscopy (EDX) analysis. Processed samples were examined under scanning electron microscopy (SEM) and EDX. Corresponding failed implants were also removed and examined under SEM and EDX. Five out of eight biopsied samples demonstrated the presence of Ti particles in the soft tissue, suggesting the true rate among all failures was between 24.5% and 91.5% (the lower bound of a 95% confidence interval for the true rate of Ti presence). SEM analysis of failed implant bodies also indicated changes in surface morphology and appeared less detailed with decreased weight percent of Ti on the surface of the failed implants. In conclusion, Ti particles were noted in 5/8 biopsied samples. Surface morphologies were smoother in failed implants compared with the reference implant.
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Silva GAF, Faot F, da Silva WJ, Del Bel Cury AA. Does implant surface hydrophilicity influence the maintenance of surface integrity after insertion into low-density artificial bone? Dent Mater 2020; 37:e69-e84. [PMID: 33234316 DOI: 10.1016/j.dental.2020.10.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 08/05/2020] [Accepted: 10/24/2020] [Indexed: 01/07/2023]
Abstract
OBJECTIVE To evaluate the influence of hydrophilicity on the surface integrity of implants after insertion in low-density artificial bone and to determine the distribution of titanium (Ti) particles along the bone bed. METHODS Forty-eight dental implants with different designs (Titamax Ex, Facility, Alvim, and Drive) and surface treatments (Neoporos® and Aqua™) were inserted into artificial bone blocks with density compatible with bone type III-IV. Hydrophobic Neoporos® surfaces were obtained by sandblasting and acid etching while hydrophilic Aqua™ surfaces were obtained by sandblasting, acid etching, and storage in an isotonic 0.9% NaCl solution. The surface integrity was evaluated by Scanning Electron Microscope (SEM) and the surface roughness parameters (Sa, Sp, Ssk, Sdr, Spk, Sk, and Svk) and surface area were measured with Laser Scanning Confocal Microscopy before and after installation. Bone beds were inspected with Digital Microscopy and micro X-Ray Fluorescence (μ-XRF) to analyze the metallic element distribution along the bone bed. RESULTS Acqua™ implants had higher initial Sa and a pronounced reduction of Sa and Sp during insertion, compared to NeoPoros® implants. After insertion, Sa and Sp of Acqua™ and NeoPoros® implants equalized, differing only between designs of Acqua™ implants. Surface damage was observed after insertion, mainly in the apical region. Facility implants that are made of TiG5 released fewer debris particles, while the highest Ti intensity was detected in the cervical region of the Titamax Ex Acqua™ and Drive Acqua™ implants. SIGNIFICANCE Physicochemical modifications to achieve surface hydrophilicity created a rougher surface that was more susceptible to surface alterations, resulting in more Ti particle release into the bone bed during surgical insertion. The higher Ti intensities detected in the cervical region of bone beds may be related to peri-implantitis and marginal bone resorption.
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Affiliation(s)
| | - Fernanda Faot
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil.
| | - Wander José da Silva
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, State University of Campinas, Campinas, SP, Brazil.
| | - Altair Antoninha Del Bel Cury
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, State University of Campinas, Campinas, SP, Brazil.
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Mombelli A, Hashim D, Cionca N. What is the impact of titanium particles and biocorrosion on implant survival and complications? A critical review. Clin Oral Implants Res 2018; 29 Suppl 18:37-53. [DOI: 10.1111/clr.13305] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Andrea Mombelli
- Division of Periodontology; University Clinics of Dental Medicine; University of Geneva; Geneva Switzerland
| | - Dena Hashim
- Division of Periodontology; University Clinics of Dental Medicine; University of Geneva; Geneva Switzerland
| | - Norbert Cionca
- Division of Periodontology; University Clinics of Dental Medicine; University of Geneva; Geneva Switzerland
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Sajnóg A, Hanć A, Koczorowski R, Makuch K, Barałkiewicz D. Usefulness of laser ablation ICP-MS for analysis of metallic particles released to oral mucosa after insertion of dental implants. J Trace Elem Med Biol 2018; 46:46-54. [PMID: 29413110 DOI: 10.1016/j.jtemb.2017.11.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 09/29/2017] [Accepted: 11/10/2017] [Indexed: 11/24/2022]
Abstract
Despite the fact that titanium is considered highly biocompatible, its presence in the oral cavity (an environment of frequently changing pH and temperature) may result in the release of titanium from intraosseous implants into the oral mucosa, causing a range of reactions from the human body. Fragments of oral mucosa collected from patients after dental implant insertion were analyzed by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The study revealed an elevated content of elements (Ti, Al, V) which are components of the metal implants and temporary cover screws. Dynamic ablation of the tissue surface was used in order to obtain maps of the content and distribution of analyzed elements. The material consisted of 30 oral mucosa tissue fragments collected 3-5 months after implantation and 10 samples collected before implantation (control group). The application of optical microscope allowed for indication and confirmation of the location of metal particles prior to LA-ICP-MS analysis. The so-obtained map permitted location of regions containing metal particles. LA-ICP-MS analysis revealed groups of samples with similar properties of metal particles, thus confirming that those metal particles were the main source of the elevated content of metals (Ti, Al, V) in the tissue after implantation. A calibration strategy based on matrix matched solid standards with powdered egg white proteins as matrix material was applied with 34S as an internal standard. The accuracy of the analytical method was verified by ablating pellets of certified reference material ERM-BB422 Fish muscle.
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Affiliation(s)
- Adam Sajnóg
- Department of Trace Element Analysis by Spectroscopy Method, Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89b, 61-614 Poznan, Poland
| | - Anetta Hanć
- Department of Trace Element Analysis by Spectroscopy Method, Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89b, 61-614 Poznan, Poland
| | - Ryszard Koczorowski
- Clinic of Geriatric Dentistry, Karol Marcinkowski University of Medical Sciences in Poznań, Bukowska 70, 60-812 Poznan, Poland
| | - Krzysztof Makuch
- Clinic of Geriatric Dentistry, Karol Marcinkowski University of Medical Sciences in Poznań, Bukowska 70, 60-812 Poznan, Poland
| | - Danuta Barałkiewicz
- Department of Trace Element Analysis by Spectroscopy Method, Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89b, 61-614 Poznan, Poland.
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Zhu WQ, Ming PP, Qiu J, Shao SY, Yu YJ, Chen JX, Yang J, Xu LN, Zhang SM, Tang CB. Effect of titanium ions on the Hippo/YAP signaling pathway in regulating biological behaviors of MC3T3-E1 osteoblasts. J Appl Toxicol 2018; 38:824-833. [PMID: 29377205 DOI: 10.1002/jat.3590] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 11/25/2017] [Accepted: 12/11/2017] [Indexed: 12/23/2022]
Abstract
Titanium (Ti) and its corresponding alloys have been widely applied in dental and orthopedic implants. Owing to abrasion and corrosion of implants in the unfavorable electrolytic aqueous environment of the host body, Ti ions could be released from implants and accumulated in local tissues. Recent studies have found that excessive Ti ions were toxic to osteoblasts in adjacent bone tissues and subsequently influenced long-term effects on implant prostheses. However, the potential molecular mechanisms underlying the damage to osteoblasts induced by Ti ions remained unclear. Hippo signaling has been confirmed to be involved in organ size and tissue regeneration in many organs, while its roles in osteoblasts differentiation and bone repair remained elusive. Therefore, we hypothesize that YAP, a regulator of Hippo pathway, inhibited osteoblast growth, skeletal development and bone repair, as well as excessive Ti ions promoted the progression of YAP activation. This study aimed to explore the role of Hippo/YAP signaling pathway in the biotoxicity effect of Ti ions on osteoblast behaviors. Here, we confirmed that 10 ppm Ti ions, a minimum concentration gradient previously reported that was capable of suppressing osteoblasts growth, induced nuclear expression of YAP in osteoblasts in our study. Furthermore, 10 ppm Ti ion-induced YAP activation was found to downregulate osteogenic differentiation of MC3T3-E1 cells. Most importantly, the hypothesis we proposed that knockdown of YAP did reverse the inhibitory effect of 10 ppm Ti ions on osteogenesis has been verified. Taken together, our work provides insights into the mechanism of which YAP is involved in regulating osteoblast behaviors under the effect of Ti ions, which may help to develop therapeutic applications for Ti implant failures and peri-implantitis.
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Affiliation(s)
- Wen-Qing Zhu
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, People's Republic of China
| | - Pan-Pan Ming
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, People's Republic of China
| | - Jing Qiu
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, People's Republic of China
| | - Shui-Yi Shao
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, People's Republic of China
| | - Ying-Juan Yu
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, People's Republic of China
| | - Jia-Xi Chen
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, People's Republic of China
| | - Jie Yang
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, People's Republic of China
| | - Li-Na Xu
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, People's Republic of China
| | - Song-Mei Zhang
- Department of General Dentistry, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, USA
| | - Chun-Bo Tang
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, People's Republic of China
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Golasik M, Herman M, Piekoszewski W. Toxicological aspects of soluble titanium – a review of in vitro and in vivo studies. Metallomics 2016; 8:1227-1242. [DOI: 10.1039/c6mt00110f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Paknejad M, Bayani M, Yaghobee S, Kharazifard MJ, Jahedmanesh N. Histopathological evaluation of gingival tissue overlying two-stage implants after placement of cover screws. BIOTECHNOL BIOTEC EQ 2015. [DOI: 10.1080/13102818.2015.1066234] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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