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Calazans Neto JV, Kreve S, Valente MLDC, Reis ACD. Protein absorption on titanium surfaces treated with a high-power laser: A systematic review. J Prosthet Dent 2024; 131:591-597. [PMID: 35418317 DOI: 10.1016/j.prosdent.2022.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 11/25/2022]
Abstract
STATEMENT OF PROBLEM The surface of titanium dental implants treated with a high-power laser has been reported to favor osseointegration, mainly by altering protein uptake. Despite the large number of articles that address the topic, the heterogeneity of methodologies and results makes an understanding of the treatment's benefits difficult, and a systematic review is needed. PURPOSE The purpose of this systematic review was to further the knowledge on protein uptake on titanium surfaces that have undergone treatment with a high-power laser. MATERIAL AND METHODS This review followed the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines and was registered with the Open Science Framework (OSF) (osf.io/gcbna). Searches were performed in PubMed, Scopus, Web of Science, Embase, and Google Scholar databases. The articles were selected in 2 steps by 2 independent reviewers according to the previously selected eligibility criteria. The risk of bias was analyzed by using the Joanna Briggs Institute (JBI)-adapted quasi-experimental study evaluation tool. RESULTS The studies addressed have shown that applying a high-power laser to the implant surface, depending on its settings, generates topographical changes that can optimize the protein absorption process and thus accelerate the other biological processes. CONCLUSIONS The studies identified in this systematic review showed that surface treatment with a high-power laser represents a promising technique with a positive influence on protein uptake and osseointegration.
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Affiliation(s)
- João Vicente Calazans Neto
- Masters student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Simone Kreve
- Doctoral student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Mariana Lima da Costa Valente
- Postdoctoral student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Andréa Cândido Dos Reis
- Professor, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil.
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Skiba THI, Kalil EC, Piattelli A, Shibli JA. Human Histological Analysis of Early Bone Response to Immediately Loaded Narrow Dental Implants with Biphasic Calcium Phosphate ® Grid-Blasted Surface Treatment: A Case Report. Dent J (Basel) 2023; 11:177. [PMID: 37504243 PMCID: PMC10377936 DOI: 10.3390/dj11070177] [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: 04/23/2023] [Revised: 06/29/2023] [Accepted: 07/17/2023] [Indexed: 07/29/2023] Open
Abstract
Implant surface topography using bioactive material provides faster bone-to-implant healing. This histological report described the analysis of human bone tissue around an immediately loaded implant, with BPC® (Biphasic Calcium Phosphate) grit-blasted surface treatment, after two months of healing. Two temporary mini-implants (2.8 × 10 mm) with BPC® grit-blasting surfaces were placed and immediately loaded to retain a complete interim denture. After a 60-day healing period, one mini-implant was removed for histologic analysis. The ground section showed the whole implant surrounded by healthy peri-implant tissues. Implant surface presented a close contact with newly formed bone, showing some areas of osteoblasts secreting mineral matrix. The ground section depicted a bone contact of 60.3 + 8.5%. The BPC® grit-blasted surface was biocompatible and enabled the osseointegration process after a short-term period.
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Affiliation(s)
| | - Eduardo C Kalil
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-040, SP, Brazil
| | - Adriano Piattelli
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-040, SP, Brazil
- School of Dentistry, Saint Camillus International University of Health and Medical Sciences, Via di Sant'Alessandro 8, 00131 Rome, Italy
| | - Jamil Awad Shibli
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-040, SP, Brazil
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Zara S, Fioravanti G, Ciuffreda A, Annicchiarico C, Quaresima R, Mastrangelo F. Evaluation of Human Gingival Fibroblasts (HGFs) Behavior on Innovative Laser Colored Titanium Surfaces. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4530. [PMID: 37444844 DOI: 10.3390/ma16134530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/16/2023] [Accepted: 06/18/2023] [Indexed: 07/15/2023]
Abstract
The use of ytterbium laser to obtain colored titanium surfaces is a suitable strategy to improve the aesthetic soft tissue results and reduce implant failures in oral rehabilitation. To investigate the relationship between novel laser-colored surfaces and peri-implant soft tissues, Human Gingival Fibroblasts (HGFs) were cultured onto 12 colored titanium grade 1 light fuchsia, dark fuchsia, light gold, and dark gold disks and their viability (MTT Assay), cytotoxicity (lactate dehydrogenase release), and collagen I secretion were compared to the machined surface used as control. Optical and electronic microscopies showed a HGF growth directly correlated to the roughness and wettability of the colored surfaces. A higher viability percentage on dark fuchsia (125%) light gold (122%), and dark gold (119%) samples with respect to the machined surface (100%) was recorded. All specimens showed a statistically significant reduction of LDH release compared to the machined surface. Additionally, a higher collagen type I secretion, responsible for an improved adhesion process, in light fuchsia (3.95 μg/mL) and dark gold (3.61 μg/mL) compared to the machined surface (3.59 μg) was recorded. The in vitro results confirmed the innovative physical titanium improvements due to laser treatment and represent interesting perspectives of innovation in order to ameliorate aesthetic dental implant performance and to obtain more predictable osteo and perio-osteointegration long term implant prognosis.
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Affiliation(s)
- Susi Zara
- Department of Pharmacy, University G. D'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Giulia Fioravanti
- Department of Physical and Chemical Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Angelo Ciuffreda
- Clinical and Experimental Medicine Department, University of Foggia, 71122 Foggia, Italy
| | | | - Raimondo Quaresima
- Department of Civil, Construction-Architectural and Environmental Engineering, University of L'Aquila, 67100 L'Aquila, Italy
| | - Filiberto Mastrangelo
- Clinical and Experimental Medicine Department, University of Foggia, 71122 Foggia, Italy
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Zarazir R, Mrad S, Aoun G, Sleiman AA, Mousallem M, Bassil J. Comparison of Osseointegration in Novel Laser-Textured and SLA Implants. Acta Inform Med 2023; 31:137-140. [PMID: 37711484 PMCID: PMC10498373 DOI: 10.5455/aim.2023.31.137-140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 06/25/2023] [Indexed: 09/01/2023] Open
Abstract
Background Osseointegration is defined as the direct structural and functional connection between neo-formed bone and dental implants. Among the parameters suggested to predominantly influencing the establishment of a successful osseointegration is the quality of the implant surface, which may enhance the strength and speed of this biomechanical process. Objective The purpose of this study was to evaluate the ability of a novel laser-treated surface, compared to sandblasted, large-grit, acid-etched (SLA) surfaces, to enhance and accelerate implant integration in delayed implant placement.Methods: Thirty patients with two missing posterior teeth were enrolled in this study. Each patient received, at a randomly allocated site, an implant with a conventional SLA surface, and at a second site, an implant with laser-textured surface. A total of 60 tissue-level implants were subsequently placed. Implant stability (ISQ) was measured using resonance frequency analysis (RFA). ISQ was assessed at baseline (T0), 8 weeks (T1), and 12 weeks (T2) following implant placement. Results: There was a statistical difference in implant stability between laser-textured and SLA group at 12 weeks postoperatively. Implant stabilization showed a successful osseointegration with both surface types. Conclusion Both laser and SLA surface treatments had positive impacts on implant stabilization following delayed placement. Laser-treated surfaces presented higher values of osseointegration at 3 months postoperatively.
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Affiliation(s)
- Ralph Zarazir
- Attending Oral Surgeon, Military Medicine, Beirut, Lebanon
- Department of Restorative and Esthetic Dentistry, Faculty of Dental Medicine, Saint Joseph University of Beirut, Lebanon
| | - Stephanie Mrad
- Department of Oral Surgery, Faculty of Dental Medicine, Saint Joseph University of Beirut, Lebanon
| | - Georges Aoun
- Department of Oral Medicine and Maxillofacial Radiology, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon
| | | | - Marianne Mousallem
- High Institute of Public Health, Saint Joseph University of Beirut, Lebanon
| | - Joseph Bassil
- Department of Oral Surgery, Faculty of Dental Medicine, Saint Joseph University of Beirut, Lebanon
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Teixeira JFL, de Souza JAC, Magalhães FAC, de Oliveira GJPL, de Santis JB, de Souza Costa CA, de Souza PPC. Laser-Modified Ti Surface Improves Paracrine Osteogenesis by Modulating the Expression of DKK1 in Osteoblasts. J Funct Biomater 2023; 14:jfb14040224. [PMID: 37103314 PMCID: PMC10145280 DOI: 10.3390/jfb14040224] [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: 02/08/2023] [Revised: 04/04/2023] [Accepted: 04/12/2023] [Indexed: 04/28/2023] Open
Abstract
Titanium surface modifications are widely used to modulate cellular behavior by recognition of topographical cues. However, how those modifications affect the expression of mediators that will influence neighboring cells is still elusive. This study aimed to evaluate the effects of conditioned media from osteoblasts cultured on laser-modified titanium surfaces on the differentiation of bone marrow cells in a paracrine manner and to analyze the expression of Wnt pathway inhibitors. Mice calvarial osteoblasts were seeded on polished (P) and Yb:YAG laser-irradiated (L) Ti surfaces. Osteoblast culture media were collected and filtered on alternate days to stimulate mice BMCs. Resazurin assay was performed every other day for 20 days to check BMC viability and proliferation. After 7 and 14 days of BMCs maintained with osteoblasts P and L-conditioned media, alkaline phosphatase activity, Alizarin Red staining, and RT-qPCR were performed. ELISA of conditioned media was conducted to investigate the expression of Wnt inhibitors Dickkopf-1 (DKK1) and Sclerostin (SOST). BMCs showed increased mineralized nodule formation and alkaline phosphatase activity. The L-conditioned media enhanced the BMC mRNA expression of bone-related markers Bglap, Alpl, and Sp7. L-conditioned media decreased the expression of DKK1 compared with P-conditioned media. The contact of osteoblasts with Yb:YAG laser-modified Ti surfaces induces the regulation of the expression of mediators that affect the osteoblastic differentiation of neighboring cells. DKK1 is among these regulated mediators.
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Affiliation(s)
- Jorge Felipe Lima Teixeira
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University, Araraquara 14801-385, Brazil
| | | | | | | | - José Bernardo de Santis
- Department of Basic and Oral Biology, Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, Brazil
| | - Carlos Alberto de Souza Costa
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University, Araraquara 14801-385, Brazil
| | - Pedro Paulo Chaves de Souza
- Innovation in Biomaterials Laboratory (iBioM), School of Dentistry, Federal University of Goiás, Goiânia 74605-020, Brazil
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Dental Materials Design and Innovative Treatment Approach. Dent J (Basel) 2023; 11:dj11030085. [PMID: 36975582 PMCID: PMC10047762 DOI: 10.3390/dj11030085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 02/27/2023] [Accepted: 03/07/2023] [Indexed: 03/19/2023] Open
Abstract
In recent years, technological innovation has had exponential growth, resulting in positive implications in dentistry [...]
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Kunrath MF, Gupta S, Lorusso F, Scarano A, Noumbissi S. Oral Tissue Interactions and Cellular Response to Zirconia Implant-Prosthetic Components: A Critical Review. MATERIALS 2021; 14:ma14112825. [PMID: 34070589 PMCID: PMC8198172 DOI: 10.3390/ma14112825] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/15/2021] [Accepted: 05/18/2021] [Indexed: 12/20/2022]
Abstract
Background: Dental components manufactured with zirconia (ZrO2) represent a significant percentage of the implant prosthetic market in dentistry. However, during the last few years, we have observed robust clinical and pre-clinical scientific investigations on zirconia both as a prosthetic and an implantable material. At the same time, we have witnessed consistent technical and manufacturing updates with regards to the applications of zirconia which appear to gradually clarify points which until recently were not well understood. Methods: This critical review evaluated the “state of the art” in relation to applications of this biomaterial in dental components and its interactions with oral tissues. Results: The physico-chemical and structural properties as well as the current surface treatment methodologies for ZrO2 were explored. A critical investigation of the cellular response to this biomaterial was completed and the clinical implications discussed. Finally, surface treatments of ZrO2 demonstrate that excellent osseointegration is possible and provide encouraging prospects for rapid bone adhesion. Furthermore, sophisticated surface treatment techniques and technologies are providing impressive oral soft tissue cell responses thus leading to superior biological seal. Conclusions: Dental devices manufactured from ZrO2 are structurally and chemically stable with biocompatibility levels allowing for safe and long-term function in the oral environment.
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Affiliation(s)
- Marcel F. Kunrath
- Dentistry Department, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul (PUCRS), P.O. Box 6681, Porto Alegre 90619-900, RS, Brazil;
- Materials and Nanoscience Laboratory, Pontifical Catholic University of Rio Grande do Sul (PUCRS), P.O. Box 6681, Porto Alegre 90619-900, RS, Brazil
| | - Saurabh Gupta
- Zirconia Implant Research Group (Z.I.R.G), International Academy of Ceramic Implantology, Silver Spring, MD 20901, USA; (S.G.); (S.N.)
- Master Dental Science, Universitat Jaume I, 12071 Castellón de la Plana, Spain
| | - Felice Lorusso
- Department of Innovative Technologies in Medicine & Dentistry, University of Chieti-Pescara, Via dei Vestini, 31-66100 Chieti, CH, Italy;
| | - Antonio Scarano
- Zirconia Implant Research Group (Z.I.R.G), International Academy of Ceramic Implantology, Silver Spring, MD 20901, USA; (S.G.); (S.N.)
- Department of Innovative Technologies in Medicine & Dentistry, University of Chieti-Pescara, Via dei Vestini, 31-66100 Chieti, CH, Italy;
- Correspondence: ; Tel.: +08713554084
| | - Sammy Noumbissi
- Zirconia Implant Research Group (Z.I.R.G), International Academy of Ceramic Implantology, Silver Spring, MD 20901, USA; (S.G.); (S.N.)
- Department of Innovative Technologies in Medicine & Dentistry, University of Chieti-Pescara, Via dei Vestini, 31-66100 Chieti, CH, Italy;
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Filiberto M, Daniele B, Franco B, Antonio S, Adriano P, Giovanna I, Raimondo Q. Histological and Histomorphometric Comparison of Innovative Dental Implants Laser Obtained: Animal Pilot Study. MATERIALS 2021; 14:ma14081830. [PMID: 33917152 PMCID: PMC8067823 DOI: 10.3390/ma14081830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/25/2021] [Accepted: 04/01/2021] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Evaluation of the in vivo bone response of two innovative titanium surfaces ytterbium laser active fiber obtained (L1-L2) compared to a sandblasted and acid etched (SBAE) during early phase of osseointegration. MATERIAL AND METHODS Three implant groups with the same macroscopic features were obtained (L1-L2-SBAE) to promote specific surface characteristics. Scanning electron microscopy, profilometric evaluation, X-ray spectrometry, and diffraction analysis were performed. For each group, six implants were placed in the tibiae of three Peli Buey sheep, and histologic, histomorphometric analysis, bone to implant contact (BIC), and the Dynamic Osseointegration index (DOI) were performed. RESULTS During the early phases of osseointegration, the histological and histomorphometric results showed significant differences between L1-L2-SBAE implants. At 15 and 30 days, histological analysis detected a newly bone formation around all specimens with an higher vital bone in L2 compared to L1 and SBAE both in cortical and in poor-quality marrow bone. At same time, histomorphometric analysis showed significantly higher BIC values in L2 (42.1 ± 2.6 and 82.4 ± 2.2) compared to L1 (5.2 ± 3.1 and 56.2 ± 1.3) and SBAE (23.3 ± 3.9 and 77.3 ± 0.4). DOI medium value showed a higher rate in L2 (2.83) compared to SBAE (2.60) and L1 (1.91). CONCLUSIONS With the limitations of this pilot study, it is possible to assess that the titanium surface characteristics, and not the technologies used to obtain the modification, played a crucial role during the osseointegration process. Histological, histomorphometric, BIC, and DOI evaluation showed a significantly higher rate in L2 specimens compared to others, confirming that the implant surface could increase the bone response in cortical or marrow poor quality bone during the initial phases of osseointegration.
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Affiliation(s)
- Mastrangelo Filiberto
- Clinical and Experimental Medicine Department, School of Dentistry, University of Foggia, 77100 Foggia, Italy
- Correspondence:
| | - Botticelli Daniele
- ARDEC Academy, 47923 Rimini, Italy; (B.D.); (B.F.)
- Faculty of Dentistry, University of Medical Science, La Habana 10400, Cuba
| | - Bengazi Franco
- ARDEC Academy, 47923 Rimini, Italy; (B.D.); (B.F.)
- Faculty of Dentistry, University of Medical Science, La Habana 10400, Cuba
| | - Scarano Antonio
- Department of Medical, Oral and Biotechnological Sciences, School of Dentistry, University of Chieti, 66100 Chieti, Italy; (S.A.); (P.A.); (I.G.)
| | - Piattelli Adriano
- Department of Medical, Oral and Biotechnological Sciences, School of Dentistry, University of Chieti, 66100 Chieti, Italy; (S.A.); (P.A.); (I.G.)
| | - Iezzi Giovanna
- Department of Medical, Oral and Biotechnological Sciences, School of Dentistry, University of Chieti, 66100 Chieti, Italy; (S.A.); (P.A.); (I.G.)
| | - Quaresima Raimondo
- Department of Civil, Architecture and Environmental Engineering, University of L’Aquila, 67100 L’Aquila, Italy;
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Tang BM, Li ZW, Wang ZY. PERK activator CCT020312 prevents inflammation-mediated osteoporosis in the ovariectomized rats. Gynecol Endocrinol 2021; 37:342-348. [PMID: 33480297 DOI: 10.1080/09513590.2021.1874904] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE To investigate the therapeutic effects of PERK activator CCT020312 (CCT) on inflammation-mediated osteoporosis (IMO) in ovariectomized rats. METHODS Rats were divided into Sham, IMO, IMO + 1 mg/kg CCT and IMO + 2 mg/kg CCT groups. IMO models were constructed by bilateral ovariectomy (OVX) on 1st day followed by injection with magnesium silicate (Talc) on the 59th day. Sham rats did not undergo OVX surgery and were injected with saline instead of Talc. From 60th to 79th day, rats were treated with DMSO (vehicle control) in the Sham and IMO groups, and 1 or 2 mg/kg CCT020312 in treatment groups. Osteopontin (OPN), osteocalcin (OCN), tartrate-resistant acid phosphatase (TRAP), C-terminal telopeptide of type I collagen (CTX-I), and pro-inflammatory factors were measured on the 80th day. ProdigyDEXA was used to evaluate bone mineral density and content (BMD/BMC). Bone volume/total volume (BV/TV), connectivity density (Conn.D), trabecular number (Tb.N), and trabecular separation (Tb.Sp) was assessed using 3D micro-CT scanner. RESULTS CCT up-regulated Conn.D, BV/TV, and Tb.N, but down-regulated Tb.Sp in IMO rats. Besides, the declined femoral BMD and BMC in IMO rats were elevated after CCT treatment. Besides, IMO rats represented declined OPN and OCN, as well as increased TRAP, CTX-I, and pro-inflammatory factors, whereas those in the treatment groups were ameliorated regarding these indexes, with 2 mg/kg CCT showing better effect. CONCLUSION PERK activator CCT020312 can be served as a new therapeutic option for the protection against bone loss in the OVX rat model associated with inflammation probably by manipulating inflammatory factors.
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Affiliation(s)
- Bao-Ming Tang
- Department of Orthopedics, Affiliated Hospital of Qinghai University, Xining, China
| | - Zhao-Wei Li
- Department of Orthopedics, Affiliated Hospital of Qinghai University, Xining, China
| | - Zhuo-Ya Wang
- Department of Geriatrics, Affiliated Hospital of Qinghai University, Xining, China
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Abaricia JO, Shah AH, Ruzga MN, Olivares-Navarrete R. Surface characteristics on commercial dental implants differentially activate macrophages in vitro and in vivo. Clin Oral Implants Res 2021; 32:487-497. [PMID: 33502059 DOI: 10.1111/clr.13717] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/16/2020] [Accepted: 01/20/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Biomaterial implantation provokes an inflammatory response that controls integrative fate. M2 macrophages regulate the response to implants by resolving the inflammatory phase and recruiting progenitor cells to aid healing. We have previously shown that modified titanium (Ti) disks directly induce M2 macrophage polarization. The aim of this study was to examine macrophage response to commercially available Ti or Ti alloy implants with comparable roughness and varying hydrophilicity. MATERIAL AND METHODS Eleven commercially available Ti (A-F) or Ti alloy (G-K) dental implants were examined in this study. Surface topography, chemistry, and hydrophilicity were characterized for each implant. To compare the immune response in vitro, human monocyte-derived macrophages were seeded on implants and secreted pro- and anti-inflammatory proteins measured. To evaluate the inflammatory response in vivo, mice were subcutaneously instrumented with clinical implants, and implant adherent macrophage populations were characterized by flow cytometry. RESULTS Macrophages on hydrophobic Implant C produced the highest level of pro-inflammatory proteins in vitro. In contrast, hydrophilic Implant E produced the second-highest pro-inflammatory response. Implants F and K, both hydrophilics, produced the highest anti-inflammatory protein secretions. Likewise, pro-inflammatory CD80hi macrophages predominated in vivo on implants C and E, and M2 CD206 + macrophages predominated on implants F and K. CONCLUSIONS These findings show that hydrophilicity alone is insufficient to predict the anti-inflammatory effect on macrophage polarization and that other properties-surface composition or topography-determine immune modulation. This in vivo model may be a useful screening method to compare the immunomodulatory response to clinical implants of disparate geometry or size.
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Affiliation(s)
- Jefferson O Abaricia
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Arth H Shah
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Marissa N Ruzga
- Department of Biomedical Engineering, College of Engineering, Ohio State University, Columbus, OH, USA
| | - Rene Olivares-Navarrete
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, Richmond, VA, USA
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11
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Schmitz N, Timmen M, Kostka K, Hoerr V, Schwarz C, Faber C, Hansen U, Matthys R, Raschke MJ, Stange R. A novel MRI compatible mouse fracture model to characterize and monitor bone regeneration and tissue composition. Sci Rep 2020; 10:16238. [PMID: 33004928 PMCID: PMC7529903 DOI: 10.1038/s41598-020-73301-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 09/11/2020] [Indexed: 12/13/2022] Open
Abstract
Over the last years, murine in vivo magnetic resonance imaging (MRI) contributed to a new understanding of tissue composition, regeneration and diseases. Due to artefacts generated by the currently used metal implants, MRI is limited in fracture healing research so far. In this study, we investigated a novel MRI-compatible, ceramic intramedullary fracture implant during bone regeneration in mice. Three-point-bending revealed a higher stiffness of the ceramic material compared to the metal implants. Electron microscopy displayed a rough surface of the ceramic implant that was comparable to standard metal devices and allowed cell attachment and growth of osteoblastic cells. MicroCT-imaging illustrated the development of the callus around the fracture site indicating a regular progressing healing process when using the novel implant. In MRI, different callus tissues and the implant could clearly be distinguished from each other without any artefacts. Monitoring fracture healing using MRI-compatible implants will improve our knowledge of callus tissue regeneration by 3D insights longitudinal in the same living organism, which might also help to reduce the consumption of animals for future fracture healing studies, significantly. Finally, this study may be translated into clinical application to improve our knowledge about human bone regeneration.
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Affiliation(s)
- Nina Schmitz
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Muenster, Münster, Germany
| | - Melanie Timmen
- Department of Regenerative Musculoskeletal Medicine, Institute of Musculoskeletal Medicine, University Muenster, Albert-Schweitzer-Campus 1, W1, 48149, Münster, Germany
| | - Katharina Kostka
- Department of Regenerative Musculoskeletal Medicine, Institute of Musculoskeletal Medicine, University Muenster, Albert-Schweitzer-Campus 1, W1, 48149, Münster, Germany
| | - Verena Hoerr
- Translational Research Imaging Center, Clinic of Radiology, University Hospital Muenster, Münster, Germany
| | - Christian Schwarz
- Translational Research Imaging Center, Clinic of Radiology, University Hospital Muenster, Münster, Germany
| | - Cornelius Faber
- Translational Research Imaging Center, Clinic of Radiology, University Hospital Muenster, Münster, Germany
| | - Uwe Hansen
- Department of Regenerative Musculoskeletal Medicine, Institute of Musculoskeletal Medicine, University Muenster, Albert-Schweitzer-Campus 1, W1, 48149, Münster, Germany
| | | | - Michael J Raschke
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Muenster, Münster, Germany
| | - Richard Stange
- Department of Regenerative Musculoskeletal Medicine, Institute of Musculoskeletal Medicine, University Muenster, Albert-Schweitzer-Campus 1, W1, 48149, Münster, Germany.
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