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Belloni A, Argentieri G, Orilisi G, Notarstefano V, Giorgini E, D'Addazio G, Orsini G, Caputi S, Sinjari B. New insights on collagen structural organization and spatial distribution around dental implants: a comparison between machined and laser-treated surfaces. J Transl Med 2024; 22:120. [PMID: 38297308 PMCID: PMC10829267 DOI: 10.1186/s12967-024-04906-4] [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: 06/23/2023] [Accepted: 01/18/2024] [Indexed: 02/02/2024] Open
Abstract
BACKGROUND One of the main factors for the osseointegration of dental implants is the development of an adequate soft tissue barrier, mainly composed by collagen, which protects the implant from bacterial development. The structural features of the peri-implant collagen are influenced by the implant components and, in particular, by the type of the surface. In the clinical practice, healing abutments are characterized by smooth surfaces, named machined. Recently, a new laser technique, Synthegra, has been developed to obtain a topography-controlled surface with micrometric regular pores that seems reducing the risk of peri-implantitis. Based on this background, this study aims investigating the structural organization and spatial distribution of collagen surrounding healing abutments characterized by laser-treated and machined surfaces. METHODS Gingiva portions surrounding custom-made healing abutments (HA), characterized by alternated laser-treated and machined surfaces, were collected and analyzed by combining Fourier Transform InfraRed Imaging (FTIRI) spectroscopy, a non-invasive and high-resolution bidimensional analytical technique, with histological and multivariate analyses. RESULTS Masson's trichrome staining, specific for collagen, highlighted a massive presence of collagen in all the analyzed samples, evidencing a surface-related spatial distribution. The nature of collagen, investigated by the FTIRI spectroscopy, appeared more abundant close to the laser-treated surface, with a perpendicular disposition of the bundles respect to the HA; conversely, a parallel distribution was observed around the machined surface. A different secondary structure was also found, with a higher amount of triple helices and a lower quantity of random coils in collagen close to the laser treated surfaces. CONCLUSIONS FTIRI spectroscopy demonstrates that the use of a laser treated transmucosal surface can improve the morphological organization of the peri-implant collagen, which presents a distribution more similar to that of natural teeth. TRIAL REGISTRATION This trial is registered with ClinicalTrials.gov Identifier: (Registration Number: NCT05754970). Registered 06/03/2023, retrospectively registered, https://clinicaltrials.gov/show/NCT05754970 .
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Affiliation(s)
- Alessia Belloni
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Giulio Argentieri
- Electron Microscopy Laboratory, Department of Innovative Technologies in Medicine and Dentistry, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - Giulia Orilisi
- Department of Clinical Sciences and Stomatology, Polytechnic University of Marche, Ancona, Italy
| | - Valentina Notarstefano
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Elisabetta Giorgini
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Gianmaria D'Addazio
- Electron Microscopy Laboratory, Department of Innovative Technologies in Medicine and Dentistry, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - Giovanna Orsini
- Department of Clinical Sciences and Stomatology, Polytechnic University of Marche, Ancona, Italy.
| | - Sergio Caputi
- Electron Microscopy Laboratory, Department of Innovative Technologies in Medicine and Dentistry, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - Bruna Sinjari
- Electron Microscopy Laboratory, Department of Innovative Technologies in Medicine and Dentistry, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
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Tang K, Luo ML, Zhou W, Niu LN, Chen JH, Wang F. The integration of peri-implant soft tissues around zirconia abutments: Challenges and strategies. Bioact Mater 2023; 27:348-361. [PMID: 37180640 PMCID: PMC10172871 DOI: 10.1016/j.bioactmat.2023.04.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/23/2023] [Accepted: 04/09/2023] [Indexed: 05/16/2023] Open
Abstract
Stable soft tissue integration around the implant abutment attenuates pathogen penetration, protects underlying bone tissue, prevents peri-implantitis and is essential in maintaining long-term implant stability. The desire for "metal free" and "aesthetic restoration" has favored zirconia over titanium abutments, especially for implant restorations in the anterior region and for patients with thin gingival biotype. Soft tissue attachment to the zirconia abutment surface remains a challenge. A comprehensive review of advances in zirconia surface treatment (micro-design) and structural design (macro-design) affecting soft tissue attachment is presented and strategies and research directions are discussed. Soft tissue models for abutment research are described. Guidelines for development of zirconia abutment surfaces that promote soft tissue integration and evidence-based references to inform clinical choice of abutment structure and postoperative maintenance are presented.
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Affiliation(s)
- Kai Tang
- National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology &Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Meng-Lin Luo
- Institute of Stomatology & Oral Maxilla Facial Key Laboratory, The First Medical Center, Chinese PLA General Hospital & Department of Stomatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Wei Zhou
- National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology &Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Li-Na Niu
- National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology &Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Ji-Hua Chen
- National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology &Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
- Corresponding author.
| | - Fu Wang
- National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology &Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
- Corresponding author.
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Influence of Anodized Titanium Surfaces on the Behavior of Gingival Cells in Contact with: A Systematic Review of In Vitro Studies. CRYSTALS 2021. [DOI: 10.3390/cryst11121566] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Electrochemically anodized (EA) surfaces promise enhanced biological properties and may be a solution to ensure a seal between peri-implant soft tissues and dental transmucosal components. However, the interaction between the modified nano-structured surface and the gingival cells needs further investigation. The aim of this systematic review is to analyze the biological response of gingival cells to EA titanium surfaces in in vitro studies with a score-based reliability assessment. A protocol aimed at answering the following focused question was developed: “How does the surface integrity (e.g., topography and chemistry) of EA titanium influence gingival cell response in in vitro studies?”. A search in three computer databases was performed using keywords. A quality assessment of the studies selected was performed using the SciRAP method. A total of 14 articles were selected from the 216 eligible papers. The mean reporting and the mean methodologic quality SciRAP scores were 87.7 ± 7.7/100 and 77.8 ± 7.8/100, respectively. Within the limitation of this review based on in vitro studies, it can be safely speculated that EA surfaces with optimal chemical and morphological characteristics enhance gingival fibroblast response compared to conventional titanium surfaces. When EA is combined with functionalization, it also positively influences gingival epithelial cell behavior.
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Ultraviolet Treatment of Titanium to Enhance Adhesion and Retention of Oral Mucosa Connective Tissue and Fibroblasts. Int J Mol Sci 2021; 22:ijms222212396. [PMID: 34830275 PMCID: PMC8617952 DOI: 10.3390/ijms222212396] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/13/2021] [Accepted: 11/15/2021] [Indexed: 01/16/2023] Open
Abstract
Peri-implantitis is an unsolved but critical problem with dental implants. It is postulated that creating a seal of gingival soft tissue around the implant neck is key to preventing peri-implantitis. The objective of this study was to determine the effect of UV surface treatment of titanium disks on the adhesion strength and retention time of oral connective tissues as well as on the adherence of mucosal fibroblasts. Titanium disks with a smooth machined surface were prepared and treated with UV light for 15 min. Keratinized mucosal tissue sections (3 × 3 mm) from rat palates were incubated for 24 h on the titanium disks. The adhered tissue sections were then mechanically detached by agitating the culture dishes. The tissue sections remained adherent for significantly longer (15.5 h) on the UV-treated disks than on the untreated control disks (7.5 h). A total of 94% of the tissue sections were adherent for 5 h or longer on the UV-treated disks, whereas only 50% of the sections remained on the control disks for 5 h. The adhesion strength of the tissue sections to the titanium disks, as measured by tensile testing, was six times greater after UV treatment. In the culture studies, mucosal fibroblasts extracted from rat palates were attached to titanium disks by incubating for 24, 48, or 96 h. The number of attached cells was consistently 15–30% greater on the UV-treated disks than on the control disks. The cells were then subjected to mechanical or chemical (trypsinization) detachment. After mechanical detachment, the residual cell rates on the UV-treated surfaces after 24 and 48 h of incubation were 35% and 25% higher, respectively, than those on the control surfaces. The remaining rate after chemical detachment was 74% on the control surface and 88% on the UV-treated surface for the cells cultured for 48 h. These trends were also confirmed in mouse embryonic fibroblasts, with an intense expression of vinculin, a focal adhesion protein, on the UV-treated disks even after detachment. The UV-treated titanium was superhydrophilic, whereas the control titanium was hydrophobic. X-ray photoelectron spectroscopy (XPS) chemical analysis revealed that the amount of carbon at the surface was significantly reduced after UV treatment, while the amount of TiOH molecules was increased. These ex vivo and in vitro results indicate that the UV treatment of titanium increases the adhesion and retention of oral mucosa connective tissue as a result of increased resistance of constituent fibroblasts against exogenous detachment, both mechanically and chemically, as well as UV-induced physicochemical changes of the titanium surface.
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Ghinassi B, Di Baldassarre A, D’Addazio G, Traini T, Andrisani M, Di Vincenzo G, Gaggi G, Piattelli M, Caputi S, Sinjari B. Gingival Response to Dental Implant: Comparison Study on the Effects of New Nanopored Laser-Treated vs. Traditional Healing Abutments. Int J Mol Sci 2020; 21:ijms21176056. [PMID: 32842709 PMCID: PMC7504205 DOI: 10.3390/ijms21176056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/14/2020] [Accepted: 08/21/2020] [Indexed: 12/15/2022] Open
Abstract
The health of peri-implant soft tissues is important for the long-term success rate of dental implants and the surface topography is pivotal in influencing it. Thus, the aim of this study was to evaluate, in human patients, the inflammatory mucosal microenvironment in the tissue surrounding a new, nanoscale, laser-treated healing abutment characterized by engineered nanopores versus a standard machined-surface. Analyses of anti- and pro-inflammatory markers, cytokeratins, desmosomal proteins and scanning electron microscopy were performed in 30 soft-tissue biopsies retrieved during second-stage surgery. The results demonstrate that the soft tissue surrounding the laser-treated surface was characterized by a lower grade of inflammation than the one facing the machined-surface, which, in turn, showed a disrupted epithelium and altered desmosomes. Moreover, higher adhesion of the epithelial cells on the laser-treated surface was detected compared to the machined one. In conclusion, the laser-treated surface topography seems to play an important role not only in cell adhesion, but also on the inflammatory makers’ expression of the soft tissue microenvironment. Thus, from a clinical point of view, the use of this kind of topography may be of crucial importance not only on healing abutments but also on prosthetic ones.
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Affiliation(s)
- Barbara Ghinassi
- Human Anatomy and Cell Differentation Lab, Department of Medicine and Aging Sciences, University “G.d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy;
- Correspondence: (B.G.); (A.D.B.)
| | - Angela Di Baldassarre
- Human Anatomy and Cell Differentation Lab, Department of Medicine and Aging Sciences, University “G.d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy;
- Correspondence: (B.G.); (A.D.B.)
| | - Gianmaria D’Addazio
- Department of Medical, Oral and Biotechnological Sciences, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy; (G.D.); (T.T.); (M.A.); (M.P.); (S.C.); (B.S.)
- Electron Microscopy Laboratory, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Tonino Traini
- Department of Medical, Oral and Biotechnological Sciences, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy; (G.D.); (T.T.); (M.A.); (M.P.); (S.C.); (B.S.)
- Electron Microscopy Laboratory, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Mauro Andrisani
- Department of Medical, Oral and Biotechnological Sciences, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy; (G.D.); (T.T.); (M.A.); (M.P.); (S.C.); (B.S.)
| | - Giorgio Di Vincenzo
- Department of Periodontics & Implant Dentistry, New York University, E 40th St #508, New York, NY 10016, USA;
| | - Giulia Gaggi
- Human Anatomy and Cell Differentation Lab, Department of Medicine and Aging Sciences, University “G.d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy;
| | - Maurizio Piattelli
- Department of Medical, Oral and Biotechnological Sciences, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy; (G.D.); (T.T.); (M.A.); (M.P.); (S.C.); (B.S.)
| | - Sergio Caputi
- Department of Medical, Oral and Biotechnological Sciences, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy; (G.D.); (T.T.); (M.A.); (M.P.); (S.C.); (B.S.)
- Electron Microscopy Laboratory, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Bruna Sinjari
- Department of Medical, Oral and Biotechnological Sciences, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy; (G.D.); (T.T.); (M.A.); (M.P.); (S.C.); (B.S.)
- Electron Microscopy Laboratory, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
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Guo B, Tang C, Wang M, Zhao Z, Shokoohi-Tabrizi HA, Shi B, Andrukhov O, Rausch-Fan X. In vitro biocompatibility of biohybrid polymers membrane evaluated in human gingival fibroblasts. J Biomed Mater Res B Appl Biomater 2020; 108:2590-2598. [PMID: 32096606 PMCID: PMC7383566 DOI: 10.1002/jbm.b.34591] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 02/11/2020] [Indexed: 12/14/2022]
Abstract
The biohybrid polymer membrane (BHM) is a new biomaterial designed for the treatment of soft periodontal tissue defects. We aimed to evaluate the in vitro biocompatibility of the membrane in human gingival fibroblasts and the capability to induce cell adhesion, migration, differentiation and improving the production of the extracellular matrix. BHM and Mucograft® collagen matrix (MCM) membranes were punched into 6 mm diameter round discs and placed in 96‐well plates. Human primary gingival fibroblasts were seeded on the membranes or tissue culture plastic (TCP) serving as the control. Cell proliferation/viability and morphology were evaluated after 3, 7, and 14 days of culture by cell counting kit (CCK)‐8 assay and scanning electron microscopy, respectively. Additionally, the gene expression of transforming growth factor (TGF)‐β1, focal adhesion kinase (FAK), collagen type 1 (Col1), alpha‐smooth muscle actin (α‐SMA), and fibroblasts growth factor (FGF)‐2 was analyzed at 3, 7, and 14 days of culture by qPCR. Cell proliferation on BHM was significantly higher than on MCM and similar to TCP. Gene expression of TGF‐β1, FAK, Col1, and α‐SMA were significantly increased on BHM compared to TCP at most investigated time points. However, the gene expression of FGF‐2 was significantly decreased on BHM at Day 7 and recovered at Day 14 to the levels similar to TCP. The finding of this study showed that BHM is superior for gingival fibroblasts in terms of adhesion, proliferation, and gene expression, suggesting that this membrane may promote the healing of soft periodontal tissue.
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Affiliation(s)
- Bin Guo
- Department of Stomatology, Jinan Central Hospital affiliated to Shandong University, Jinan, Shandong, China.,Division of Periodontology and Conservative Dentistry, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Chuhua Tang
- Division of Periodontology and Conservative Dentistry, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Department of Stomatology, PLA Strategic Support Force Characteristic Medical Center, Beijing, China
| | - Mingguo Wang
- Department of Stomatology, Jinan Central Hospital affiliated to Shandong University, Jinan, Shandong, China
| | - Zhongqi Zhao
- Division of Periodontology and Conservative Dentistry, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Hassan A Shokoohi-Tabrizi
- Division of Periodontology and Conservative Dentistry, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Bin Shi
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Oleh Andrukhov
- Division of Periodontology and Conservative Dentistry, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Xiaohui Rausch-Fan
- Division of Periodontology and Conservative Dentistry, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
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Chen W, Zhi M, Feng Z, Gao P, Yuan Y, Zhang C, Wang Y, Dong A. Sustained co-delivery of ibuprofen and basic fibroblast growth factor by thermosensitive nanoparticle hydrogel as early local treatment of peri-implantitis. Int J Nanomedicine 2019; 14:1347-1358. [PMID: 30863065 PMCID: PMC6390857 DOI: 10.2147/ijn.s190781] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Objective The aims of this study were to 1) encapsulate ibuprofen (IBU) and basic fibroblast growth factor (bFGF) in a thermosensitive micellar hydrogel, 2) test the biological properties of this in situ drug delivery system, and 3) study the effect of hydrogel in promoting soft tissue healing after implant surgery and its anti-inflammatory function as an early local treatment of peri-implantitis. Materials and methods A thermosensitive micellar hydrogel was prepared from amphiphilic copolymer poly(ε-caprolactone-co-1,4,8-trioxa [4.6]spiro-9-undecanone)-poly(ethylene glycol)-poly(ε-caprolactone-co-1,4,8-trioxa [4.6]spiro-9-undecanone) (PECT) nanoparticles and tested in vitro using a scanning electron microscope, rheometer, UV spectrophotometer, HPLC, and transmission electron microscope. Results The bFGF + IBU/PECT hydrogel formed a stable, water-dispersible nanoparticle core shell that was injectable at room temperature, hydrogel in situ at body temperature, and provided sustained release of both hydrophilic and hydrophobic drugs. The hydrogel promoted the proliferation and adhesion of human gingival fibroblasts, upregulated the expression of adhesion factors such as vinculin proteins, and showed anti-inflammatory properties. Conclusion In situ preparation of IBU-and bFGF-loaded PECT hydrogel represents a promising drug delivery system with the potential to provide early local treatment for peri-implantitis.
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Affiliation(s)
- Wenlei Chen
- Department of Periodontology, School and Hospital of Stomatology, Tianjin Medical University, Tianjin, People's Republic of China,
| | - Min Zhi
- Department of Periodontology, School and Hospital of Stomatology, Tianjin Medical University, Tianjin, People's Republic of China,
| | - Zujian Feng
- Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China,
| | - Pengfei Gao
- Department of Periodontology, School and Hospital of Stomatology, Tianjin Medical University, Tianjin, People's Republic of China,
| | - Yuan Yuan
- Department of Periodontology, School and Hospital of Stomatology, Tianjin Medical University, Tianjin, People's Republic of China,
| | - Congcong Zhang
- Department of Periodontology, School and Hospital of Stomatology, Tianjin Medical University, Tianjin, People's Republic of China,
| | - Yonglan Wang
- Department of Periodontology, School and Hospital of Stomatology, Tianjin Medical University, Tianjin, People's Republic of China,
| | - Anjie Dong
- Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China,
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Ferrà-Cañellas MDM, Llopis-Grimalt MA, Monjo M, Ramis JM. Tuning Nanopore Diameter of Titanium Surfaces to Improve Human Gingival Fibroblast Response. Int J Mol Sci 2018; 19:E2881. [PMID: 30249013 PMCID: PMC6213077 DOI: 10.3390/ijms19102881] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 09/19/2018] [Accepted: 09/20/2018] [Indexed: 12/23/2022] Open
Abstract
The aim of this study was to determine the optimal nanopore diameter of titanium nanostructured surfaces to improve human gingival fibroblast (hGF) response, with the purpose of promoting gingiva integration to dental implant abutments. Two TiO₂ nanoporous groups with different diameters (NP-S ~48 nm and NP-B ~74 nm) were grown on Ti foils using an organic electrolyte containing fluoride by electrochemical oxidation, varying the applied voltage and the interelectrode spacing. The surfaces were characterized by scanning electron microscope (SEM), atomic force microscopy (AFM), and contact angle. The hGF were cultured onto the different surfaces, and metabolic activity, cytotoxicity, cell adhesion, and gene expression were analyzed. Bigger porous diameters (NP-B) were obtained by increasing the voltage used during anodization. To obtain the smallest diameter (NP-S), apart from lowering the voltage, a lower interelectrode spacing was needed. The greatest surface area and number of peaks was found for NP-B, despite these samples not being the roughest as defined by Ra. NP-B had a better cellular response compared to NP-S. However, these effects had a significant dependence on the cell donor. In conclusion, nanoporous groups with a diameter in the range of 74 nm induce a better hGF response, which may be beneficial for an effective soft tissue integration around the implant.
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Affiliation(s)
- Maria Del Mar Ferrà-Cañellas
- Group of Cell Therapy and Tissue Engineering, Research Institute on Health Sciences (IUNICS), University of the Balearic Islands. Ctra. Valldemossa km 7.5, 07122 Palma de Mallorca, Spain.
| | - Maria Antonia Llopis-Grimalt
- Group of Cell Therapy and Tissue Engineering, Research Institute on Health Sciences (IUNICS), University of the Balearic Islands. Ctra. Valldemossa km 7.5, 07122 Palma de Mallorca, Spain.
- Balearic Islands Health Research Institute (IdISBa), 07010 Palma de Mallorca, Spain.
| | - Marta Monjo
- Group of Cell Therapy and Tissue Engineering, Research Institute on Health Sciences (IUNICS), University of the Balearic Islands. Ctra. Valldemossa km 7.5, 07122 Palma de Mallorca, Spain.
- Balearic Islands Health Research Institute (IdISBa), 07010 Palma de Mallorca, Spain.
| | - Joana Maria Ramis
- Group of Cell Therapy and Tissue Engineering, Research Institute on Health Sciences (IUNICS), University of the Balearic Islands. Ctra. Valldemossa km 7.5, 07122 Palma de Mallorca, Spain.
- Balearic Islands Health Research Institute (IdISBa), 07010 Palma de Mallorca, Spain.
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Jiang N, Chen L, Ma Q, Ruan J. Nanostructured Ti surfaces and retinoic acid/dexamethasone present a spatial framework for the maturation and amelogenesis of LS-8 cells. Int J Nanomedicine 2018; 13:3949-3964. [PMID: 30022819 PMCID: PMC6042561 DOI: 10.2147/ijn.s167629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE To investigate the amelogenesis-inductive effects of surface structures at the nanoscale. For this purpose, variable nanostructured titanium dioxide (TiO2) surfaces were used as a framework to regulate the amelogenic behaviors of ameloblasts with the administration of retinoic acid (RA)/dexamethasone (DEX). MATERIALS AND METHODS TiO2 nanotubular (NT) surfaces were fabricated via anodization. Mouse ameloblast-like LS-8 cells were seeded and cultured on NT surfaces in the presence or absence of RA/DEX for 48 h. The amelogenic behaviors and extracellular matrix (ECM) mineralization of LS-8 cells on nanostructured Ti surfaces were characterized using field emission scanning electron microscope, laser scanning confocal microscope, quantitative polymerase chain reaction, MTT assay, and flow cytometry. RESULTS TiO2 NT surfaces (tube size ~30 and ~80 nm) were constructed via anodization at 5 or 20 V and denoted as NT5 and NT20, respectively. LS-8 cells exhibited significantly increased spread and proliferation, and lower rates of apoptosis and necrosis on NT surfaces. The amelogenic gene expression and ECM mineralization differed significantly on the NT20 and the NT5 and polished Ti sample surfaces in standard medium. The amelogenic behaviors of LS-8 cells were further changed by RA/DEX pretreatment, which directly drove maturation of LS-8 cells. CONCLUSION Controlling the amelogenic behaviors of ameloblast-like LS-8 cells by manipulating the nanostructure of biomaterials surfaces represents an effective tool for the establishment of a systemic framework for supporting enamel regeneration. The administration of RA/DEX is an effective approach for driving the amelogenesis and maturation of ameloblasts.
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Affiliation(s)
- Nan Jiang
- Department of Preventive Dentistry, College of Stomatology, Xi'an JiaoTong University, Xi'an, People's Republic of China,
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an JiaoTong University, Xi'an, People's Republic of China,
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an JiaoTong University, Xi'an, People's Republic of China,
| | - Lu Chen
- Department of Preventive Dentistry, College of Stomatology, Xi'an JiaoTong University, Xi'an, People's Republic of China,
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an JiaoTong University, Xi'an, People's Republic of China,
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an JiaoTong University, Xi'an, People's Republic of China,
| | - Qianli Ma
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an, People's Republic of China,
- Department of Prosthodontics, College of Stomatology, Xi'an JiaoTong University, Xi'an, People's Republic of China,
| | - Jianping Ruan
- Department of Preventive Dentistry, College of Stomatology, Xi'an JiaoTong University, Xi'an, People's Republic of China,
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an JiaoTong University, Xi'an, People's Republic of China,
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an JiaoTong University, Xi'an, People's Republic of China,
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Cellular Responses Modulated by FGF-2 Adsorbed on Albumin/Heparin Layer-by-Layer Assemblies. PLoS One 2015; 10:e0125484. [PMID: 25945799 PMCID: PMC4422587 DOI: 10.1371/journal.pone.0125484] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 03/18/2015] [Indexed: 11/19/2022] Open
Abstract
In a typical cell culture system, growth factors immobilized on the cell culture surfaces can serve as a reservoir of bio-signaling molecules, without the need to supplement them additionally into the culture medium. In this paper, we report on the fabrication of albumin/heparin (Alb/Hep) assemblies for controlled binding of basic fibroblast growth factor (FGF-2). The surfaces were constructed by layer-by-layer adsorption of polyelectrolytes albumin and heparin and were subsequently stabilized by covalent crosslinking with glutaraldehyde. An analysis of the surface morphology by atomic force microscopy showed that two Alb/Hep bilayers are required to cover the surface of substrate. The formation of the Alb/Hep assemblies was monitored by the surface plasmon resonance (SPR), the infrared multiinternal reflection spectroscopy (FTIR MIRS) and UV/VIS spectroscopy. The adsorption of FGF-2 on the cross-linked Alb/Hep was followed by SPR. The results revealed that FGF-2 binds to the Alb/Hep assembly in a dose and time-dependent manner up to the surface concentration of 120 ng/cm2. The bioactivity of the adsorbed FGF-2 was assessed in experiments in vitro, using calf pulmonary arterial endothelial cells (CPAE). CPAE cells could attach and proliferate on Alb/Hep surfaces. The adsorbed FGF-2 was bioactive and stimulated both the proliferation and the differentiation of CPAE cells. The improvement was more pronounced at a lower FGF-2 surface concentration (30 ng/cm2) than on surfaces with a higher concentration of FGF-2 (120 ng/cm2).
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