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Negut I, Gradisteanu-Pircalabioru G, Dinu M, Bita B, Parau AC, Grumezescu V, Ristoscu C, Chifiriuc MC. Bioglass and Vitamin D3 Coatings for Titanium Implants: Osseointegration and Corrosion Protection. Biomedicines 2023; 11:2772. [PMID: 37893145 PMCID: PMC10604371 DOI: 10.3390/biomedicines11102772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
The use of MAPLE synthesized thin films based on BG and VD3 for improving the osseointegration and corrosion protection of Ti-like implant surfaces is reported. The distribution of chemical elements and functional groups was shown by FTIR spectrometry; the stoichiometry and chemical functional integrity of thin films after MAPLE deposition was preserved, optimal results being revealed especially for the BG+VD3_025 samples. The morphology and topography were examined by SEM and AFM, and revealed surfaces with many irregularities, favoring a good adhesion of cells. The thin films' cytotoxicity and biocompatibility were evaluated in vitro at the morphological, biochemical, and molecular level. Following incubation with HDF cells, BG57+VD3_ 025 thin films showed the best degree of biocompatibility, as illustrated by the viability assay values. According to the LDH investigation, all tested samples had higher values compared to the unstimulated cells. The evaluation of cell morphology was performed by fluorescence microscopy following cultivation of HDF cells on the obtained thin films. The cultivation of HDF's on the thin films did not induce major cellular changes. Cells cultured on the BG57+VD3_025 sample had similar morphology to that of unstimulated control cells. The inflammatory profile of human cells cultured on thin films obtained by MAPLE was analyzed by the ELISA technique. It was observed that the thin films did not change the pro- and anti-inflammatory profile of the HDF cells, the IL-6 and IL-10 levels being similar to those of the control sample. The wettability of the MAPLE thin films was investigated by the sessile drop method. A contact angle of 54.65° was measured for the sample coated with BG57+VD3_025. Electrochemical impedance spectroscopy gave a valuable insight into the electrochemical reactions occurring on the surface.
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Affiliation(s)
- Irina Negut
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania; (I.N.); (B.B.); (V.G.)
| | - Gratiela Gradisteanu-Pircalabioru
- eBio-Hub Research Center, University Politehnica of Bucharest—CAMPUS, 6 Iuliu Maniu Boulevard, 061344 Bucharest, Romania;
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, 050657 Bucharest, Romania;
- Academy of Romanian Scientists, 3 Ilfov Str., District 5, 050044 Bucharest, Romania
| | - Mihaela Dinu
- National Institute of Research and Development for Optoelectronics-INOE2000, 409 Atomistilor St., 077125 Magurele, Romania; (M.D.); (A.C.P.)
| | - Bogdan Bita
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania; (I.N.); (B.B.); (V.G.)
- Faculty of Physics, University of Bucharest, 077125 Magurele, Romania
| | - Anca Constantina Parau
- National Institute of Research and Development for Optoelectronics-INOE2000, 409 Atomistilor St., 077125 Magurele, Romania; (M.D.); (A.C.P.)
| | - Valentina Grumezescu
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania; (I.N.); (B.B.); (V.G.)
| | - Carmen Ristoscu
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania; (I.N.); (B.B.); (V.G.)
| | - Mariana Carmen Chifiriuc
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, 050657 Bucharest, Romania;
- Academy of Romanian Scientists, 3 Ilfov Str., District 5, 050044 Bucharest, Romania
- The Romanian Academy, Calea Victoriei 25, District 1, 010071 Bucharest, Romania
- Department of Microbiology, Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania
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Mizukoshi K, Okazawa Y, Amemiya K, Tsuchiya Y, Motegi S, Tsukamoto R, Honjo K, Takahashi R, Yoshihara N, Kawano S, Kawai M, Munakata S, Ishiyama S, Sugimoto K, Takahashi M, Kojima Y, Ikeda S, Sakamoto K. Examination of colorectal cancer cases with metal allergy. Surg Today 2023:10.1007/s00595-023-02643-7. [PMID: 36757618 DOI: 10.1007/s00595-023-02643-7] [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: 12/30/2021] [Accepted: 09/30/2022] [Indexed: 02/10/2023]
Abstract
PURPOSE To report our initiatives and treatment results for patients with colorectal cancer with metal allergy. METHODS A total of 27 patients (2.6%) with a history of metal contact dermatitis were identified among 1027 patients who underwent curative resection of colorectal cancer from 2014 to 2020. The results of the patch test, perioperative results, and postoperative colonoscopy findings were also investigated. RESULTS The patch test for metal allergens and staples was performed in 21 patients (77.8%), and 13 of them (61.9%) tested positive for at least one metal allergen. Ni (38.1%), Co (28.6%), and Pd (19.0%) showed higher positive rates than other metals, and 1 patient (4.8%) tested positive for staples. Stapled anastomosis/suturing was performed as planned in 15 of 27 patients. In 10 patients, the anastomosis method was changed from stapled to hand-sewn according to the no-patch test results (60%), positivity for multiple metals (20%), positivity for staples (10%), and surgeon's judgment (10%). No complications and abnormal colonoscopy findings were found to be associated with stapled anastomosis/suturing. CONCLUSION The patch test is useful for selecting an optimal anastomosis method for patients with suspected metal allergy.
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Affiliation(s)
- Kosuke Mizukoshi
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan. .,Department of Surgery, Kuwana City Medical Center, 3-11 Kotobuki-cho, Kuwana-shi, Mie, 511-0061, Japan.
| | - Yu Okazawa
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Kota Amemiya
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Yuki Tsuchiya
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Shunsuke Motegi
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Ryoichi Tsukamoto
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Kumpei Honjo
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Rina Takahashi
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Nagisa Yoshihara
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Shingo Kawano
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Masaya Kawai
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Shinya Munakata
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Shun Ishiyama
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Kiichi Sugimoto
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Makoto Takahashi
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Yutaka Kojima
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Shigaku Ikeda
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Kazuhiro Sakamoto
- Department of Coloproctological Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
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Poli PP, de Miranda FV, Polo TOB, Santiago Júnior JF, Lima Neto TJ, Rios BR, Assunção WG, Ervolino E, Maiorana C, Faverani LP. Titanium Allergy Caused by Dental Implants: A Systematic Literature Review and Case Report. MATERIALS 2021; 14:ma14185239. [PMID: 34576463 PMCID: PMC8465040 DOI: 10.3390/ma14185239] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/25/2021] [Accepted: 09/08/2021] [Indexed: 12/29/2022]
Abstract
(1) Background: Hypersensitivity reactions to metals may arise in predisposed patients chronically exposed to metallic materials, including dental implants made of titanium alloys. The purpose of this article was to systematically review titanium allergy manifestations in patients treated with dental implants and report a clinical case; (2) Methods: A systematic electronic search was performed for articles published in the English language until July 2021. The following eligibility criteria were adopted: (1) Population: individuals undergoing titanium and/or titanium alloy implant-supported rehabilitations; (2) Exposure: peri-implant soft tissue reactions attributable to implant insertion; (3) Outcome: evidence of titanium allergy, diagnostic methods, and forms of resolution; (3) Results: The included studies, in summary, presented evidence that titanium should not be considered an inert material, being able to trigger allergic reactions, and may be responsible for implant failure. A 55-year-old male patient received 3 implants in the posterior region of the left mandible and presented an epulis-like lesion developed from the peri-implant mucosa. The immunohistochemical analysis of the biopsy specimen confirmed the initial diagnosis of allergic reaction to titanium; (4) Conclusions: Although the evidence is weak, and titanium allergy has a low incidence, hypersensitivity reactions should not be underestimated. A rapid and conclusive diagnosis is mandatory to prevent further complications.
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Affiliation(s)
- Pier Paolo Poli
- 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
| | - Fábio Vieira de Miranda
- Department of Diagnosis and Surgery, Division of Oral and Maxillofacial Surgery and Implantology, School of Dentistry, São Paulo State University-UNESP, Araçatuba 16015-050, SP, Brazil
| | - Tárik Ocon Braga Polo
- Department of Diagnosis and Surgery, Division of Oral and Maxillofacial Surgery and Implantology, School of Dentistry, São Paulo State University-UNESP, Araçatuba 16015-050, SP, Brazil
| | | | - Tiburtino José Lima Neto
- Department of Diagnosis and Surgery, Division of Oral and Maxillofacial Surgery and Implantology, School of Dentistry, São Paulo State University-UNESP, Araçatuba 16015-050, SP, Brazil
| | - Bárbara Ribeiro Rios
- Department of Diagnosis and Surgery, Division of Oral and Maxillofacial Surgery and Implantology, School of Dentistry, São Paulo State University-UNESP, Araçatuba 16015-050, SP, Brazil
| | - Wirley Gonçalves Assunção
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University-UNESP, Araçatuba 16015-050, SP, Brazil
| | - Edilson Ervolino
- Department of Basic Sciences, School of Dentistry, São Paulo State University-UNESP, Araçatuba 16015-050, SP, Brazil
| | - Carlo Maiorana
- 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 Perez Faverani
- Department of Diagnosis and Surgery, Division of Oral and Maxillofacial Surgery and Implantology, School of Dentistry, São Paulo State University-UNESP, Araçatuba 16015-050, SP, Brazil
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Almeida TFA, Oliveira SR, de Noronha MS, Moreno A, Mesquita RA, Abreu LG, da Silva TA. Type IV hypersensitivity associated with restorative materials: Clinical report and systematic literature review. J Prosthet Dent 2021; 128:1201-1210. [PMID: 33820631 DOI: 10.1016/j.prosdent.2021.01.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/25/2021] [Accepted: 01/26/2021] [Indexed: 10/21/2022]
Abstract
STATEMENT OF PROBLEM Type IV hypersensitivity reactions (Type IV HR) are immune responses mediated by antigen-specific effector T cells. PURPOSE The purpose of this clinical report and systematic review was to report the clinicopathological features of Type IV HR in the oral mucosa and to present a systematic literature review of case reports and case series of individuals with Type IV HR in the oral mucosa related to contact with dental materials. MATERIAL AND METHODS The presented clinical lesions were melanotic macules with burning that affected the internal labial mucosa in contact with composite resin veneer crowns. Histopathological and immunohistochemical analysis of the lesion was performed. The systematic literature review was performed based on a search in 4 electronic databases (PubMed/MEDLINE, Scopus, Web of Science, and Ovid). RESULTS Immunohistochemistry showed positivity for CD4, CD8, CD20, CD3, tryptase, and CD117. After conservative treatment, the patient reported improvement of symptoms, and a decrease in the number of inflammatory cells was verified. Twenty-one articles were included in the review. Unlike the present patient, the authors of all the articles recommended radical treatment with the removal of the dental material. CONCLUSIONS Type IV HR in oral mucosa is rare, and the assessment of clinical and histopathological characteristics is essential to perform an accurate diagnosis and provide appropriate treatment.
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Affiliation(s)
- Tatiana F A Almeida
- Postdoctoral research, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Sicília R Oliveira
- PhD student, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Mariana S de Noronha
- PhD student, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Amália Moreno
- Professor, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Ricardo A Mesquita
- Professor, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Lucas G Abreu
- Professor, Department of Child's and Adolescent's Oral Health, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Tarcília A da Silva
- Professor, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.
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Peng TY, Lin DJ, Mine Y, Tasi CY, Li PJ, Shih YH, Chiu KC, Wang TH, Hsia SM, Shieh TM. Biofilm Formation on the Surface of (Poly)Ether-Ether-Ketone and In Vitro Antimicrobial Efficacy of Photodynamic Therapy on Peri-Implant Mucositis. Polymers (Basel) 2021; 13:polym13060940. [PMID: 33803736 PMCID: PMC8003156 DOI: 10.3390/polym13060940] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/09/2021] [Accepted: 03/16/2021] [Indexed: 02/07/2023] Open
Abstract
Poly-ether-ether-ketone (PEEK) is an aesthetically pleasing natural material with good biocompatibility and shock absorption characteristics. The application of PEEK as a dental implant or abutment is expected to reduce the risk of failure and enhance aesthetics. Given that approximately one in 15 patients have allergic reactions to antibiotics, photodynamic therapy (PDT) has been gaining attention as an alternative treatment. Herein, the applicability of PEEK dental implants or abutments was investigated using material analyses, biofilm formation assay, and cell viability tests. The possible use of PDT for peri-implant mucositis was evaluated with the biofilm removal assay. The obtained data were analyzed based on the multivariate analysis of variance, paired t-tests, and the Pearson correlation coefficient (α = 0.05). The results revealed that PEEK was significantly less conducive to the formation of biofilms with S. mutans and A. actinomycetemcomitan (p < 0.001) but exhibited comparable MG-63 (human osteoblast-like) osteoblast cell viability (p > 0.05) to the other materials. PDT had similar antimicrobial efficacy and yielded similar biofilm removal effects to antibiotics. Altogether, these findings suggest that PEEK has attractive features and can serve as an alternative material for dental implants or abutments. In cases where peri-implant mucositis occurs, PDT can be used as an accessible therapeutic approach.
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Affiliation(s)
- Tzu-Yu Peng
- School of Dentistry, College of Dentistry, China Medical University, Taichung 40402, Taiwan; (T.-Y.P.); (D.-J.L.); (P.-J.L.)
| | - Dan-Jae Lin
- School of Dentistry, College of Dentistry, China Medical University, Taichung 40402, Taiwan; (T.-Y.P.); (D.-J.L.); (P.-J.L.)
| | - Yuichi Mine
- Department of Medical System Engineering, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima City, Hiroshima 734-8553, Japan;
| | - Chi-Yang Tasi
- Department of Dentistry, Taipei Medical University Hospital, Taipei 11031, Taiwan;
| | - Po-Jung Li
- School of Dentistry, College of Dentistry, China Medical University, Taichung 40402, Taiwan; (T.-Y.P.); (D.-J.L.); (P.-J.L.)
| | - Yin-Hwa Shih
- Department of Healthcare Administration, College of Medical and Health Science, Asia University, Taichung 41354, Taiwan;
| | - Kuo-Chou Chiu
- Division of Oral Diagnosis and Family Dentistry, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
- Correspondence: (K.-C.C.); (T.-M.S.); Tel.: +886-4-2205-3366 (ext. 2316) (T.-M.S.)
| | - Tong-Hong Wang
- Tissue Bank, Chang Gung University, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan;
| | - Shih-Min Hsia
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan;
| | - Tzong-Ming Shieh
- School of Dentistry, College of Dentistry, China Medical University, Taichung 40402, Taiwan; (T.-Y.P.); (D.-J.L.); (P.-J.L.)
- Correspondence: (K.-C.C.); (T.-M.S.); Tel.: +886-4-2205-3366 (ext. 2316) (T.-M.S.)
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de Lima-Souza RA, Vallarelli AFA, Viviane Mariano F, Cintra ML. Multiple cutaneous fistula after titanium dental implant: A case report. Clin Implant Dent Relat Res 2021; 23:270-274. [PMID: 33393197 DOI: 10.1111/cid.12972] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/11/2020] [Accepted: 12/17/2020] [Indexed: 01/10/2023]
Abstract
BACKGROUND Dental implants allow functional and aesthetic reestablishment. Titanium (Ti) implants emerge as the preferred choice because Ti is considered an inert material, highly resistant to corrosion. However, virtually no material can be considered universally biocompatible and this includes titanium. PURPOSE To report an unusual presentation of inflammatory reaction after a Ti dental implant. MATERIALS AND METHODS The patient presented to a dermatology clinic to evaluate lesions on her face. She reported the placement of dental implants 2 years earlier, one of which evolved with inflammatory signs and instability a few days after the procedure. As anti-inflammatory and antibiotic therapy were fruitless, after 3 months the implant was removed, but the inflammation persisted. On physical examination, painful erythematous-papule-nodular lesions were found on the left mandibular and submandibular region. RESULTS Culture tests for microorganisms were negative and histopathological examination revealed a chronic fistula with a foreign body reaction. Using X-ray fluorescence, Ti particles were found along the fistula wall. CONCLUSIONS Professionals should be aware of complications arising from dental implants, including Ti implants. Detailed anamnesis and laboratory investigation can assure diagnosis for specific therapeutic approaches.
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Affiliation(s)
| | | | - Fernanda Viviane Mariano
- Department of Pathology, School of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Maria Letícia Cintra
- Department of Pathology, School of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil
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Rodrigues Neves CT, Spiekstra SW, de Graaf NPJ, Rustemeyer T, Feilzer AJ, Kleverlaan CJ, Gibbs S. Titanium salts tested in reconstructed human skin with integrated MUTZ-3-derived Langerhans cells show an irritant rather than a sensitizing potential. Contact Dermatitis 2020; 83:337-346. [PMID: 32677096 PMCID: PMC7689826 DOI: 10.1111/cod.13666] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 07/10/2020] [Accepted: 07/15/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND The nature of clinically related adverse reactions to titanium is still unknown. OBJECTIVE To determine whether titanium salts have irritant or sensitizing potential in a reconstructed human skin (RHS) model with integrated Langerhans cells (LCs). METHODS RHS-LCs (ie, reconstructed epidermis) containing primary differentiated keratinocytes and CFSE+ CD1a+ -LCs generated from the MUTZ-3 cell line on a primary fibroblast-populated collagen hydrogel (dermis) were topically exposed to titanium(IV) bis(ammonium lactato)dihydroxide (TiALH). LC migration and plasticity were determined. RESULTS TiALH resulted in CFSE+ CD1a+ -LC migration out of the epidermis. Neutralizing antibodies to CCL5 and CXCL12 showed that LC migration was CCL5 and not CXCL12 mediated. LCs accumulating within the dermis after TiALH exposure were CFSE+ Lang+ CD68+ which is characteristic of a phenotypic switch of MUTZ-LC to a macrophage-like cell. Furthermore, TiALH did not result in increased interleukin (IL)-1β or CCR7 messenger RNA (mRNA) in the dermis, but did result in increased IL-10 mRNA. In addition, monocultures of MUTZ-LCs failed to increase LC maturation biomarkers CD83, CD86, and CXCL-8 when exposed to noncytotoxic concentrations of four different titanium salts. CONCLUSION These results classify titanium salts as irritants rather than sensitizers and indicate that titanium implant-related complaints could be due to localized irritant-mediated inflammation arising from leachable agents rather than a titanium metal allergy.
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Affiliation(s)
- Charlotte T Rodrigues Neves
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Centre, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Sander W Spiekstra
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Centre, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Niels P J de Graaf
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Centre, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Department of Oral Cell Biology, Academic Centre for Dentistry (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Thomas Rustemeyer
- Department of Dermatology, Amsterdam University Medical Centre (location AMC), Amsterdam, The Netherlands
| | - Albert J Feilzer
- Department of Dental Materials Science, Academic Centre for Dentistry (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Cees J Kleverlaan
- Department of Oral Cell Biology, Academic Centre for Dentistry (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Susan Gibbs
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Centre, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Department of Oral Cell Biology, Academic Centre for Dentistry (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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8
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Tam I, Yu J, Ko LN, Schalock PC. Clinical factors before or after device implantation in predicting metal hypersensitivity reactions: A retrospective study. Contact Dermatitis 2020; 83:398-407. [DOI: 10.1111/cod.13637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 05/28/2020] [Accepted: 06/09/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Idy Tam
- Tufts University School of Medicine Boston Massachusetts
- Department of Dermatology Massachusetts General Hospital Boston Massachusetts
| | - JiaDe Yu
- Department of Dermatology Massachusetts General Hospital Boston Massachusetts
- Harvard School of Medicine Boston Massachusetts
| | - Lauren N. Ko
- Harvard Combined Dermatology Residency Harvard Medical School Boston Massachusetts
| | - Peter C. Schalock
- Department of Dermatology Geisel School of Medicine at Dartmouth Hanover New Hampshire
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9
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Bioactive Coating on Titanium Dental Implants for Improved Anticorrosion Protection: A Combined Experimental and Theoretical Study. COATINGS 2019. [DOI: 10.3390/coatings9100612] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In recent years, extensive studies have been continuously undertaken on the design of bioactive and biomimetic dental implant surfaces due to the need for improvement of the implant–bone interface properties. In this paper, the titanium dental implant surface was modified by bioactive vitamin D3 molecules by a self-assembly process in order to form an improved anticorrosion coating. Surface characterization of the modified implant was performed by field emission scanning electron microscopy (FE-SEM), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), and contact angle measurements (CA). The implant’s electrochemical stability during exposure to an artificial saliva solution was monitored in situ by electrochemical impedance spectroscopy (EIS). The experimental results obtained were corroborated by means of quantum chemical calculations at the density functional theory level (DFT). The formation mechanism of the coating onto the titanium implant surface was proposed. During a prolonged immersion period, the bioactive coating effectively prevented a corrosive attack on the underlying titanium (polarization resistance in order of 107 Ω cm2) with ~95% protection effectiveness.
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