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Riberti N, D’Amico E, Pierfelice TV, Furlani M, Giuliani A, Piattelli A, Iezzi G, Comuzzi L. Case Report of a Dental Implant with Conometric Abutment-Prosthetic Cap Connection: Advanced High-Resolution Imaging and Peri-Implant Connective Tissue Performance. Clin Pract 2024; 14:556-569. [PMID: 38666801 PMCID: PMC11049280 DOI: 10.3390/clinpract14020043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/19/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
Background: In recent years, the use of conometric systems to connect dental implant abutments and prosthetic caps has been advocated because they seem to eliminate the side effects reported when using screw- and cement-connected prosthetic restorations. Objectives: The present case study is focused on conometric connection characterization and its performance in terms of the microarchitecture of peri-implant soft tissues by using a cross-linked approach based on optical microscopy and three-dimensional imaging. Methods: Two dental implants were characterized using micro-CT and another identical one was implanted into a patient; the latter was retrieved 45 days later due to changes in prosthetic needs. Afterward, the peri-implant soft tissues were investigated using synchrotron-based phase contrast imaging, histology, and polarized light microscopy. Results: Micro-CT analysis showed perfect adhesion between the abutment and prosthetic cap; histology and polarized light microscopy showed that connective tissue was richly present around the abutment retrieved from the patient. Moreover, the quantitative evaluation of connective tissues using synchrotron imaging, supported by artificial intelligence, revealed that this tissue was rich in mature collagen, with longitudinal and transverse collagen bundles intertwined. The number and connectivity of transverse bundles were consistently greater than those of the longitudinal bundles. Conclusion: It was found that the peri-implant soft tissue was already mature and well organized after only 45 days of implantation, supporting the hypothesis that conometric connections contribute to the significant stabilization of peri-implant soft tissues.
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Affiliation(s)
- Nicole Riberti
- Neuroscience, Imaging and Clinical Sciences Department, University of Chieti-Pescara, 66100 Chieti, Italy;
| | - Emira D’Amico
- Medical, Oral and Biotechnological Sciences Department, University of Chieti-Pescara, 66100 Chieti, Italy; (E.D.); (T.V.P.); (G.I.)
| | - Tania Vanessa Pierfelice
- Medical, Oral and Biotechnological Sciences Department, University of Chieti-Pescara, 66100 Chieti, Italy; (E.D.); (T.V.P.); (G.I.)
| | - Michele Furlani
- Odontostomatologic and Specialized Clinical Sciences Department, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy;
| | - Alessandra Giuliani
- Odontostomatologic and Specialized Clinical Sciences Department, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy;
| | - Adriano Piattelli
- School of Dentistry, Saint Camillus International University for Health Sciences (Unicamillus), 00131 Rome, Italy;
| | - Giovanna Iezzi
- Medical, Oral and Biotechnological Sciences Department, University of Chieti-Pescara, 66100 Chieti, Italy; (E.D.); (T.V.P.); (G.I.)
| | - Luca Comuzzi
- Independent Researcher, Via Raffaello 36/a, 31020 San Vendemiano (TV), Italy;
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Tosco V, Delfina Valloreo R, Petricca MT, Furlani M, Tripodi D. Relationship between external and internal structures in deciduous teeth: a multidisciplinary study. Eur J Paediatr Dent 2023; 24:282-286. [PMID: 38015111 DOI: 10.23804/ejpd.2023.1882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
AIM The different dental structures of deciduous teeth have always been regarded with great interest in endodontics and restorative dentistry. Nevertheless, there are still few investigations on the morphology of deciduous teeth compared to the permanent ones, due to the difficulty in obtaining sound deciduous teeth suitable for measurement. The aim of this research is to evaluate and compare the internal and external structures of deciduous teeth from completely preserved hominid findings, using X-ray and micro-CT examination. METHODS Samples were photographed using a digital camera and were then analysed by X-ray and micro-CT. Different parameters of external and internal structures were calculated to obtain a normalisation coefficient, called the P-factor. CONCLUSION There is a constant correlation between external and internal structure, regardless of gender, type, shape or arch sector.
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Affiliation(s)
- V Tosco
- Department of Clinical Sciences and Stomatology, Polytechnic University of Marche, Ancona, Italy
| | - R Delfina Valloreo
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - M T Petricca
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - M Furlani
- Department of Clinical Sciences and Stomatology, Polytechnic University of Marche, Ancona, Italy
| | - D Tripodi
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
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Orilisi G, Vitiello F, Notarstefano V, Furlani M, Riberti N, Monterubbianesi R, Bellezze T, Campus G, Carrouel F, Orsini G, Putignano A. Multidisciplinary evaluation of the remineralization potential of three fluoride-based toothpastes on natural white spot lesions. Clin Oral Investig 2023; 27:7451-7462. [PMID: 37857734 PMCID: PMC10713761 DOI: 10.1007/s00784-023-05334-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/11/2023] [Indexed: 10/21/2023]
Abstract
OBJECTIVES This in vitro study aimed assessing the remineralization potential of three commercial fluoride-based toothpastes in permanent teeth with natural white spot lesions (WSLs). A multidisciplinary approach based on Raman microspectroscopy (RMS), Scanning electron microscopy (SEM), Energy-dispersive x-ray spectroscopy (EDS), and Vickers microhardness (VMH) was exploited. METHODS N = 12 human molars with natural WSLs in the proximal-vestibular zone were selected and divided into 4 groups (n = 3) according to the different treatments: HAF (hydroxyapatite with fluoride ions); SMF (sodium monofluorophosphate with arginine); SF (sodium fluoride with enzymes), and CTRL (untreated group). All toothpastes tested contained 1450 ppm of fluoride. Teeth samples were submitted to the following protocol: a 7-day pH cycling treatment, with two daily exposures (2 min each time) to the commercial toothpastes described above. The surface micromorphology (SEM), the chemical/elemental composition (RMS and EDS), and the Vickers microhardness (VMH) were evaluated. Statistical analysis was performed. RESULTS A remarkable remineralization of WSLs in SEM images was observed in all treated groups compared to CTRL. In particular, HAF and SF displayed higher values of VMH, phosphates amount (I960), crystallinity (FWHM960), and lower ones of C/P (I1070/I960) with respect to CTRL. Intermediate values were found in SMF, higher than CTRL but lower with respect to HAF and SF. As regards the Ca/P ratio, statistically significant differences (p < 0.05) were found between SF and the other groups. CONCLUSIONS All the tested dentifrices have shown to remineralize the WSLs. SF and HAF have comparable capability in hardness recovery and crystallinity; however, SF shows the best remineralizing potential according to both micromorphological and chemical analyses. Clinical relevance The daily use of toothpastes containing hydroxyapatite partially replaced with fluoride, sodium monofluorophosphate with arginine and sodium fluoride toothpaste associated with enzymes represents a preventive, therapeutic, effective, and non-invasive tool for remineralize WSLs.
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Affiliation(s)
- Giulia Orilisi
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy
| | - Flavia Vitiello
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy
- Health, Systemic, Process (P2S), Research Unit UR 4129, University Claude Bernard Lyon 1, University of Lyon, 69008, Lyon, France
| | - Valentina Notarstefano
- Department of Life and Environmental Sciences, Università Politecnica Delle Marche (DISVA), 60131, Ancona, Italy
| | - Michele Furlani
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy
| | - Nicole Riberti
- Department of Neurosciences Imaging and Clinical Sciences (DNISC), University of Chieti-Pescara, 66100, Chieti, Italy
| | - Riccardo Monterubbianesi
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy
| | - Tiziano Bellezze
- Department of Materials, Environmental Sciences and Urban Planning (SIMAU), Università Politecnica Delle Marche, 60131, Ancona, Italy
| | - Guglielmo Campus
- Department of Surgery, Microsurgery and Medicine Sciences, School of Dentistry, University of Sassari, 07100, Sassari, Italy
- Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, CH-3010, Bern, Switzerland
| | - Florence Carrouel
- Health, Systemic, Process (P2S), Research Unit UR 4129, University Claude Bernard Lyon 1, University of Lyon, 69008, Lyon, France
| | - Giovanna Orsini
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy.
| | - Angelo Putignano
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy
- National Institute of Health and Science of Aging (INRCA), 60124, Ancona, Italy
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Furlani M, Riberti N, Gatto ML, Giuliani A. High-Resolution Phase-Contrast Tomography on Human Collagenous Tissues: A Comprehensive Review. Tomography 2023; 9:2116-2133. [PMID: 38133070 PMCID: PMC10748183 DOI: 10.3390/tomography9060166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/07/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023] Open
Abstract
Phase-contrast X-ray imaging is becoming increasingly considered since its first applications, which occurred almost 30 years ago. Particular emphasis was placed on studies that use this technique to investigate soft tissues, which cannot otherwise be investigated at a high resolution and in a three-dimensional manner, using conventional absorption-based settings. Indeed, its consistency and discrimination power in low absorbing samples, unified to being a not destructive analysis, are pushing interests on its utilization from researchers of different specializations, from botany, through zoology, to human physio-pathology research. In this regard, a challenging method for 3D imaging and quantitative analysis of collagenous tissues has spread in recent years: it is based on the unique characteristics of synchrotron radiation phase-contrast microTomography (PhC-microCT). In this review, the focus has been placed on the research based on the exploitation of synchrotron PhC-microCT for the investigation of collagenous tissue physio-pathologies from solely human samples. Collagen tissues' elasto-mechanic role bonds it to the morphology of the site it is extracted from, which could weaken the results coming from animal experimentations. Encouraging outcomes proved this technique to be suitable to access and quantify human collagenous tissues and persuaded different researchers to approach it. A brief mention was also dedicated to the results obtained on collagenous tissues using new and promising high-resolution phase-contrast tomographic laboratory-based setups, which will certainly represent the real step forward in the diffusion of this relatively young imaging technique.
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Affiliation(s)
- Michele Furlani
- Department DISCO, Università Politecnica delle Marche, Via Brecce Bianche 12, 60131 Ancona, Italy;
| | - Nicole Riberti
- Neuroscience Imaging and Clinical Sciences Department, University of Chieti-Pescara, 66100 Chieti, Italy;
| | - Maria Laura Gatto
- Department DIISM, Università Politecnica delle Marche, Via Brecce Bianche 12, 60131 Ancona, Italy;
| | - Alessandra Giuliani
- Department DISCO, Università Politecnica delle Marche, Via Brecce Bianche 12, 60131 Ancona, Italy;
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Canullo L, Giuliani A, Furlani M, Menini M, Piattelli A, Iezzi G. Influence of abutment macro- and micro-geometry on morphologic and morphometric features of peri-implant connective tissue. Clin Oral Implants Res 2023; 34:920-933. [PMID: 37345230 DOI: 10.1111/clr.14118] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 05/10/2023] [Accepted: 06/10/2023] [Indexed: 06/23/2023]
Abstract
OBJECTIVES The aim of the present human observational study is to provide morphologic and morphometric analysis of peri-implant connective tissue next to abutments with divergent or convergent macro-geometry and different surface micro-characteristics. MATERIALS AND METHODS Thirty patients were rehabilitated with single implants in the posterior area and one out of three different healing abutments with a one-stage technique: machined divergent abutment (DIV-MAC), machined convergent abutment (CONV-MAC) or convergent abutment with ultrathin threaded surface (CONV-UTM). At 3 months postimplant insertion, peri-implant soft tissue was harvested; the following outcomes were investigated: histomorphometry (vertical width of connective and epithelial components) as detected by histology and polarized light; and connective tissue vertical width and 3D organization as detected by synchrotron-based high-resolution phase-contrast-based tomography (PhC-μCT). RESULTS Significant differences in connective tissue vertical dimension (aJE-AM) were found between DIV-MAC and both CONV-MAC and CONV-UTM, both by histology and PhC-μCT, with significantly higher values for the last two groups. Moreover, 2D histological analysis did not find significant differences in the junctional epithelium vertical dimension (PM-aJE). Importantly, PhC-μCT analysis revealed, at 3D level, significant greater amount and density of collagen bundles for CONV-UTM compared with the other two groups. CONCLUSIONS Convergent abutment profiles, regardless of their surface micro-geometry, seem to favor axial development of peri-implant connective tissue. Moreover, ultrathin threaded surfaces seem associated with denser and greater connective tissue organization, which might improve peri-implant soft tissue seal.
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Affiliation(s)
- Luigi Canullo
- Unit of Prosthodontics and Implant Prosthodontics, Department of Surgical Sciences (DISC), University of Genova, Genova, Italy
| | - Alessandra Giuliani
- Section BBF, Department of Clinical Sciences (DiSCO), Polytechnic University of Marche, Ancona, Italy
| | - Michele Furlani
- Section BBF, Department of Clinical Sciences (DiSCO), Polytechnic University of Marche, Ancona, Italy
| | - Maria Menini
- Unit of Prosthodontics and Implant Prosthodontics, Department of Surgical Sciences (DISC), University of Genova, Genova, Italy
| | - Adriano Piattelli
- Dental School, University of Belgrade, Belgrade, Serbia
- School of Dentistry, Saint Camillus International University of Health and Medical Sciences, Rome, Italy
- Fondazione Villa Serena per la Ricerca, Città Sant'Angelo, Italy
- Casa di Cura Villa Serena del Dott. L. Petruzzi, Città Sant'Angelo, Italy
| | - Giovanna Iezzi
- Department of Medical, Oral and Biotechnological Sciences, University G. d'Annunzio of Chieti-Pescara, Chieti, Italy
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Gatto ML, Furlani M, Giuliani A, Cabibbo M, Bloise N, Fassina L, Petruczuk M, Visai L, Mengucci P. Combined Effects of HA Concentration and Unit Cell Geometry on the Biomechanical Behavior of PCL/HA Scaffold for Tissue Engineering Applications Produced by LPBF. Materials (Basel) 2023; 16:4950. [PMID: 37512225 PMCID: PMC10381722 DOI: 10.3390/ma16144950] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 06/26/2023] [Accepted: 07/08/2023] [Indexed: 07/30/2023]
Abstract
This experimental study aims at filling the gap in the literature concerning the combined effects of hydroxyapatite (HA) concentration and elementary unit cell geometry on the biomechanical performances of additively manufactured polycaprolactone/hydroxyapatite (PCL/HA) scaffolds for tissue engineering applications. Scaffolds produced by laser powder bed fusion (LPBF) with diamond (DO) and rhombic dodecahedron (RD) elementary unit cells and HA concentrations of 5, 30 and 50 wt.% were subjected to structural, mechanical and biological characterization to investigate the biomechanical and degradative behavior from the perspective of bone tissue regeneration. Haralick's features describing surface pattern, correlation between micro- and macro-structural properties and human mesenchymal stem cell (hMSC) viability and proliferation have been considered. Experimental results showed that HA has negative influence on scaffold compaction under compression, while on the contrary it has a positive effect on hMSC adhesion. The unit cell geometry influences the mechanical response in the plastic regime and also has an effect on the cell proliferation. Finally, both HA concentration and elementary unit cell geometry affect the scaffold elastic deformation behavior as well as the amount of micro-porosity which, in turn, influences the scaffold degradation rate.
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Affiliation(s)
- Maria Laura Gatto
- Department of Industrial Engineering and Mathematical Sciences, Polytechnic University of Marche, Via Brecce Bianche 12, 60131 Ancona, Italy
| | - Michele Furlani
- Department of Clinical Science, Polytechnic University of Marche, Via Brecce Bianche 12, 60131 Ancona, Italy
| | - Alessandra Giuliani
- Department of Clinical Science, Polytechnic University of Marche, Via Brecce Bianche 12, 60131 Ancona, Italy
| | - Marcello Cabibbo
- Department of Industrial Engineering and Mathematical Sciences, Polytechnic University of Marche, Via Brecce Bianche 12, 60131 Ancona, Italy
| | - Nora Bloise
- Department of Molecular Medicine, Centre for Health Technologies (CHT), INSTM UdR of Pavia, University of Pavia, Viale Taramelli 3/b, 27100 Pavia, Italy
- Medicina Clinica-Specialistica, UOR5 Laboratorio di Nanotecnologie, ICS Maugeri, IRCCS, Via Salvatore Maugeri 4, 27100 Pavia, Italy
| | - Lorenzo Fassina
- Department of Electrical, Computer and Biomedical Engineering, Centre for Health Technologies (CHT), University of Pavia, Via Ferrata 5, 27100 Pavia, Italy
| | - Marlena Petruczuk
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Str., 02-507 Warsaw, Poland
| | - Livia Visai
- Department of Molecular Medicine, Centre for Health Technologies (CHT), INSTM UdR of Pavia, University of Pavia, Viale Taramelli 3/b, 27100 Pavia, Italy
- Medicina Clinica-Specialistica, UOR5 Laboratorio di Nanotecnologie, ICS Maugeri, IRCCS, Via Salvatore Maugeri 4, 27100 Pavia, Italy
| | - Paolo Mengucci
- Department of Materials, Environmental Sciences and Urban Planning, INSTM UdR of Ancona, Polytechnic University of Marche, Via Brecce Bianche 12, 60131 Ancona, Italy
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Gatto ML, Cerqueni G, Furlani M, Riberti N, Tognoli E, Denti L, Leonardi F, Giuliani A, Mattioli-Belmonte M, Mengucci P. Influence of Trabecular Geometry on Scaffold Mechanical Behavior and MG-63 Cell Viability. Materials (Basel) 2023; 16:2342. [PMID: 36984222 PMCID: PMC10056383 DOI: 10.3390/ma16062342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 06/18/2023]
Abstract
In a scaffold-based approach for bone tissue regeneration, the control over morphometry allows for balancing scaffold biomechanical performances. In this experimental work, trabecular geometry was obtained by a generative design process, and scaffolds were manufactured by vat photopolymerization with 60% (P60), 70% (P70) and 80% (P80) total porosity. The mechanical and biological performances of the produced scaffolds were investigated, and the results were correlated with morphometric parameters, aiming to investigate the influence of trabecular geometry on the elastic modulus, the ultimate compressive strength of scaffolds and MG-63 human osteosarcoma cell viability. The results showed that P60 trabecular geometry allows for matching the mechanical requirements of human mandibular trabecular bone. From the statistical analysis, a general trend can be inferred, suggesting strut thickness, the degree of anisotropy, connectivity density and specific surface as the main morphometric parameters influencing the biomechanical behavior of trabecular scaffolds, in the perspective of tissue engineering applications.
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Affiliation(s)
- Maria Laura Gatto
- Department DIISM, Università Politecnica Delle Marche, Via Brecce Bianche 12, 60131 Ancona, Italy;
| | - Giorgia Cerqueni
- Department DISCLIMO & UdR INSTM, Università Politecnica Delle Marche, Via Tronto 10/a, 60126 Ancona, Italy; (G.C.); (M.M.-B.)
| | - Michele Furlani
- Department DISCO, Università Politecnica Delle Marche, Via Brecce Bianche 12, 60131 Ancona, Italy; (M.F.); (A.G.)
| | - Nicole Riberti
- Neurosciences Imaging and Clinical Sciences Department, University of Chieti-Pescara, 66100 Chieti, Italy;
| | - Emanuele Tognoli
- Department of Engineering “Enzo Ferrari”, Università di Modena e Reggio Emilia, Via Vivarelli 10, 41125 Modena, Italy; (E.T.); (L.D.)
| | - Lucia Denti
- Department of Engineering “Enzo Ferrari”, Università di Modena e Reggio Emilia, Via Vivarelli 10, 41125 Modena, Italy; (E.T.); (L.D.)
| | | | - Alessandra Giuliani
- Department DISCO, Università Politecnica Delle Marche, Via Brecce Bianche 12, 60131 Ancona, Italy; (M.F.); (A.G.)
| | - Monica Mattioli-Belmonte
- Department DISCLIMO & UdR INSTM, Università Politecnica Delle Marche, Via Tronto 10/a, 60126 Ancona, Italy; (G.C.); (M.M.-B.)
| | - Paolo Mengucci
- Department SIMAU & UdR INSTM, Università Politecnica Delle Marche, Via Brecce Bianche 12, 60131 Ancona, Italy
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Belloni A, Furlani M, Greco S, Notarstefano V, Pro C, Randazzo B, Pellegrino P, Zannotti A, Carpini GD, Ciavattini A, Di Lillo F, Giorgini E, Giuliani A, Cinti S, Ciarmela P. Uterine leiomyoma as useful model to unveil morphometric and macromolecular collagen state and impairment in fibrotic diseases: An ex-vivo human study. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166494. [PMID: 35850176 DOI: 10.1016/j.bbadis.2022.166494] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 07/07/2022] [Accepted: 07/11/2022] [Indexed: 10/18/2022]
Abstract
Collagen is one of the main components of the extracellular matrix (ECM), involved, among all, in the maintenance of the structural support of tissues. In fibrotic diseases, collagen is overexpressed, and its production determines the formation of a significantly stiffer ECM. The cross-linking of high-resolution analytical tools, able to investigate both the tridimensional organization and the secondary structure of collagen in fibrotic diseases, could be useful to identify defined markers correlating the status of this protein with specific pathological conditions. To this purpose, an innovative multidisciplinary approach based on Phase-Contrast MicroComputed Tomography, Transmission Electron Microscopy, and Fourier Transform Infrared Imaging Spectroscopy was exploited on leiomyoma samples and adjacent myometrium to characterize microstructural collagen features. Uterine leiomyoma is a common gynecological disorder affecting women in fertile age. It is characterized by a massive collagen production due to the repairing processes occurring at myometrium level, and, hence, it represents a valuable model to investigate collagen self-organization in a pathological condition. Moreover, to evaluate the sensitivity of this multidisciplinary approach, the effects of eicosapentaenoic (EPA) and docosahexaenoic (DHA) omega-3 fatty acids in collagen reduction were also investigated.
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Affiliation(s)
- Alessia Belloni
- Department of Life and Environmental Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Michele Furlani
- Department of Odontostomatologic and Specialized Clinical Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Stefania Greco
- Department of Experimental and Clinical Medicine, Università Politecnica delle Marche, Ancona, Italy.
| | - Valentina Notarstefano
- Department of Life and Environmental Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Chiara Pro
- Department of Life and Environmental Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Basilio Randazzo
- Department of Life and Environmental Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Pamela Pellegrino
- Department of Experimental and Clinical Medicine, Università Politecnica delle Marche, Ancona, Italy.
| | - Alessandro Zannotti
- Department of Odontostomatologic and Specialized Clinical Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Giovanni Delli Carpini
- Department of Odontostomatologic and Specialized Clinical Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Andrea Ciavattini
- Department of Odontostomatologic and Specialized Clinical Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | | | - Elisabetta Giorgini
- Department of Life and Environmental Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Alessandra Giuliani
- Department of Odontostomatologic and Specialized Clinical Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Saverio Cinti
- Department of Experimental and Clinical Medicine, Università Politecnica delle Marche, Ancona, Italy; Center of Obesity, Università Politecnica delle Marche, Ancona, Italy.
| | - Pasquapina Ciarmela
- Department of Experimental and Clinical Medicine, Università Politecnica delle Marche, Ancona, Italy.
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Tosco V, Monterubbianesi R, Furlani M, Giuliani A, Putignano A, Orsini G. Micro-computed tomography for assessing the internal and external voids of bulk-fill composite restorations: A technical report. Imaging Sci Dent 2022; 52:303-308. [PMID: 36238708 PMCID: PMC9530296 DOI: 10.5624/isd.20220007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 04/13/2022] [Accepted: 04/27/2022] [Indexed: 11/18/2022] Open
Abstract
Purpose Materials and Methods Results Conclusion
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Affiliation(s)
- Vincenzo Tosco
- Department of Clinical Sciences and Stomatology, Polytechnic University of Marche, Ancona, Italy
| | - Riccardo Monterubbianesi
- Department of Clinical Sciences and Stomatology, Polytechnic University of Marche, Ancona, Italy
| | - Michele Furlani
- Department of Clinical Sciences and Stomatology, Polytechnic University of Marche, Ancona, Italy
| | - Alessandra Giuliani
- Department of Clinical Sciences and Stomatology, Polytechnic University of Marche, Ancona, Italy
| | - Angelo Putignano
- Department of Clinical Sciences and Stomatology, Polytechnic University of Marche, Ancona, Italy
| | - Giovanna Orsini
- Department of Clinical Sciences and Stomatology, Polytechnic University of Marche, Ancona, Italy
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Putignano A, Tosco V, Monterubbianesi R, Vitiello F, Gatto ML, Furlani M, Giuliani A, Orsini G. Comparison of three different bulk-filling techniques for restoring class II cavities: μCT, SEM-EDS combined analyses for margins and internal fit assessments. J Mech Behav Biomed Mater 2021; 124:104812. [PMID: 34500356 DOI: 10.1016/j.jmbbm.2021.104812] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/30/2021] [Accepted: 09/02/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Evaluation of the behavior of three different bulk-filling techniques in terms of internal adaptation and external marginal sealing for restoring class II cavities. METHODS Fifteen extracted sound molar teeth were used. Two standardized class II mesio/disto-occlusal (MO/DO) slot cavities, 4 mm long, 4 mm wide and 3 mm deep were prepared in each tooth, obtaining n=30 cavity preparations. The cavities were randomly assigned into three groups (n=10 per group) according to three bulk filling techniques: Bulk Traditional (BT), Bulk&Go (BG) and Bulk&Flow (BF). The teeth were analyzed by scanning electron microscopy (SEM) to investigate the external marginal seal. Thereafter, the chemical composition of tooth-restoration interface was analyzed by energy-dispersive X-ray spectroscopy (EDS). Complementary information to the SEM and EDS were obtained by micro-computed tomography (μCT) to assess the internal fit. RESULTS SEM analysis showed a proper external marginal seal for all groups tested as confirmed by the EDS investigation, highlighting the presence of adhesive layer at the tooth-restoration interface. The internal marginal adaptation by means of μCT analysis revealed gaps formation at the tooth-restoration interface only for BT group, while an intimate contact free of gaps were found in the other two groups. Moreover, in BT and BF groups voids were present within the restoration. SIGNIFICANCE BG and BF techniques can be considered as reliable alternatives to BT technique, as they simplify the class II restoration without transforming it into class I, thus ensuring a successful result.
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Affiliation(s)
- Angelo Putignano
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, Via Toronto 10/a, 60126, Ancona, Italy.
| | - Vincenzo Tosco
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, Via Toronto 10/a, 60126, Ancona, Italy.
| | - Riccardo Monterubbianesi
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, Via Toronto 10/a, 60126, Ancona, Italy.
| | - Flavia Vitiello
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, Via Toronto 10/a, 60126, Ancona, Italy.
| | - Maria Laura Gatto
- Department of Materials, Environmental Sciences and Urban Planning (SIMAU), Polytechnic University of Marche, Via Brecce Bianche 12, 60131, Ancona, Italy.
| | - Michele Furlani
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, Via Toronto 10/a, 60126, Ancona, Italy.
| | - Alessandra Giuliani
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, Via Toronto 10/a, 60126, Ancona, Italy.
| | - Giovanna Orsini
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, Via Toronto 10/a, 60126, Ancona, Italy.
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Gatto ML, Groppo R, Furlani M, Giuliani A, Mangano C, Mangano F. Lithography-based Ceramic Manufacturing (LCM) versus Milled Zirconia Blocks under uniaxial compressive loading: An in vitro comparative study. J Dent 2021; 116:103886. [PMID: 34762988 DOI: 10.1016/j.jdent.2021.103886] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/21/2021] [Accepted: 10/28/2021] [Indexed: 10/19/2022] Open
Abstract
AIM This in vitro study aimed to compare the mechanical performance of 3D printed versus milled zirconia blocks, when subjected to uniaxial compression load, and to investigate the microstructural characteristics of the 3D printed samples, before and after the application of the load. METHODS Twenty zirconia blocks (5 × 5 × 5mm3) were prepared: 10 (tests) were 3D printed with a Lithography-based Ceramic Manufacturing (LCM) printer (Cerafab S65®, Lithoz, Vienna, Austria), and 10 (controls) were milled with a 5-axis milling machine (DWX-52D®, DGShape, a Roland Company, Hamamatsu, Japan). Compression tests were carried out on all samples, using a load cell of 30 kN and crosshead speed of 0.5 mm/min, in according to the ASTM C1424-15. The elastic modulus of the material was calculated from stress/strain curve by taking compressive stress values between 50 MPa and 100 MPa. Compression data obtained were plotted as stress-strain curves. Finally, the 3D printed test samples were also observed by VEGA3 Tescan scanning electron microscope (SEM) to detect the presence of eventual defects on surface before and after compression. A statistical analysis was performed to compare the elastic modulus and the deformation in compression at maximum load of the test samples that did not break and the control samples. RESULTS Under mechanical compression, four of the test samples reached failure, whereas all the control samples did not reach failure at the limit of the load cell. However, the 3D printed samples that did not break revealed interesting properties, such as a better modulus of elasticity (p = 0.15) and a lower tendency to deformation under compression (p<0.001), when compared to the milled ones. CONCLUSIONS Within the limits of this study (experimental setting, in vitro design, only one type of force applied) milled zirconia blocks were found more resistant to compression forces than 3D printed ones.
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Affiliation(s)
- Maria Laura Gatto
- Department SIMAU, Università Politecnica delle Marche, Ancona, Italy
| | - Riccardo Groppo
- Department of Engineering "Enzo Ferrari", Università di Modena e Reggio Emilia, Italy
| | - Michele Furlani
- Department of Clinical Sciences, Università Politecnica delle Marche, Ancona, Italy
| | - Alessandra Giuliani
- Department of Clinical Sciences, Università Politecnica delle Marche, Ancona, Italy
| | - Carlo Mangano
- Department of Dental Sciences, San Raffaele University, Milan, Italy
| | - Francesco Mangano
- Department of Pediatric, Preventive Dentistry and Orthodontics, Sechenov First State Medical University, Moscow, Russia.
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Gatto ML, Furlani M, Giuliani A, Bloise N, Fassina L, Visai L, Mengucci P. Biomechanical performances of PCL/HA micro- and macro-porous lattice scaffolds fabricated via laser powder bed fusion for bone tissue engineering. Mater Sci Eng C Mater Biol Appl 2021; 128:112300. [PMID: 34474851 DOI: 10.1016/j.msec.2021.112300] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/01/2021] [Accepted: 07/05/2021] [Indexed: 12/27/2022]
Abstract
The present experimental study aims to extend know-how on resorbable polycaprolactone/hydroxyapatite (PCL/HA, 70/30 wt%) scaffolds, produced by Laser Powder Bed Fusion (LPBF) technology, to geometrically complex lattice structures and micro porous struts. Using optimized LPBF printing parameters, micro- and macro-porous scaffolds for bone tissue regeneration were produced by regularly repeating in space Diamond (DO) and Rhombic Dodecahedron (RD) elementary unit cells. After production, scaffolds were submitted to structural, mechanical, and biological characterization. The interaction of scaffolds with human Mesenchymal Stem Cells (hMSCs) allowed studying the degradative processes of the PCL matrix. Biomechanical performances and biodegradation of scaffolds were compared to literature results and bone tissue data. Mechanical compression test, biological viability up to 4 days of incubation and degradation rate evidenced strong dependence of scaffold behavior on unit cell geometry as well as on global geometrical features.
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Affiliation(s)
- Maria Laura Gatto
- Department of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy.
| | - Michele Furlani
- Department of Clinical Science, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - Alessandra Giuliani
- Department of Clinical Science, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - Nora Bloise
- Department of Molecular Medicine, Centre for Health Technologies (CHT), INSTM UdR of Pavia, University of Pavia, 27100 Pavia, Italy; Medicina Clinica-Specialistica, UOR5 Laboratorio di Nanotecnologie, ICS Maugeri, IRCCS, Pavia, Italy
| | - Lorenzo Fassina
- Department of Electrical, Computer and Biomedical Engineering, Centre for Health Technologies (CHT), University of Pavia, Via Ferrata 5, 27100 Pavia, Italy
| | - Livia Visai
- Department of Molecular Medicine, Centre for Health Technologies (CHT), INSTM UdR of Pavia, University of Pavia, 27100 Pavia, Italy; Medicina Clinica-Specialistica, UOR5 Laboratorio di Nanotecnologie, ICS Maugeri, IRCCS, Pavia, Italy
| | - Paolo Mengucci
- Department of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
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Iezzi G, Scarano A, Valbonetti L, Mazzoni S, Furlani M, Mangano C, Muttini A, Raspanti M, Barboni B, Piattelli A, Giuliani A. Biphasic Calcium Phosphate Biomaterials: Stem Cell-Derived Osteoinduction or In Vivo Osteoconduction? Novel Insights in Maxillary Sinus Augmentation by Advanced Imaging. Materials (Basel) 2021; 14:ma14092159. [PMID: 33922799 PMCID: PMC8122985 DOI: 10.3390/ma14092159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 11/16/2022]
Abstract
Maxillary sinus augmentation is often necessary prior to implantology procedure, in particular in cases of atrophic posterior maxilla. In this context, bone substitute biomaterials made of biphasic calcium phosphates, produced by three-dimensional additive manufacturing were shown to be highly biocompatible with an efficient osteoconductivity, especially when combined with cell-based tissue engineering. Thus, in the present research, osteoinduction and osteoconduction properties of biphasic calcium-phosphate constructs made by direct rapid prototyping and engineered with ovine-derived amniotic epithelial cells or amniotic fluid cells were evaluated. More in details, this preclinical study was performed using adult sheep targeted to receive scaffold alone (CTR), oAFSMC, or oAEC engineered constructs. The grafted sinuses were explanted at 90 days and a cross-linked experimental approach based on Synchrotron Radiation microCT and histology analysis was performed on the complete set of samples. The study, performed taking into account the distance from native surrounding bone, demonstrated that no significant differences occurred in bone regeneration between oAEC-, oAFMSC-cultured, and Ctr samples and that there was a predominant action of the osteoconduction versus the stem cells osteo-induction. Indeed, it was proven that the newly formed bone amount and distribution decreased from the side of contact scaffold/native bone toward the bulk of the scaffold itself, with almost constant values of morphometric descriptors in volumes more than 1 mm from the border.
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Affiliation(s)
- Giovanna Iezzi
- Department of Medical, Oral and Biotechnological Sciences, Dental School, University G. D’Annunzio of Chieti-Pescara, 66100 Chieti, CH, Italy; (G.I.); (A.S.); (A.P.)
| | - Antonio Scarano
- Department of Medical, Oral and Biotechnological Sciences, Dental School, University G. D’Annunzio of Chieti-Pescara, 66100 Chieti, CH, Italy; (G.I.); (A.S.); (A.P.)
| | - Luca Valbonetti
- Faculty of Biosciences and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, TE, Italy; (L.V.); (A.M.); (B.B.)
- Institute of Biochemistry and Cell Biology (CNR-IBBC/EMMA/Infrafrontier/IMPC), National Research Council, Monterotondo Scalo, 00015 Rome, RM, Italy
| | - Serena Mazzoni
- Department of Clinical Science, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, AN, Italy; (S.M.); (M.F.)
| | - Michele Furlani
- Department of Clinical Science, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, AN, Italy; (S.M.); (M.F.)
| | | | - Aurelio Muttini
- Faculty of Biosciences and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, TE, Italy; (L.V.); (A.M.); (B.B.)
| | - Mario Raspanti
- Department of Medicine and Surgery, University of Insubria, Via Guicciardini 9, 21100 Varese, VA, Italy;
| | - Barbara Barboni
- Faculty of Biosciences and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, TE, Italy; (L.V.); (A.M.); (B.B.)
| | - Adriano Piattelli
- Department of Medical, Oral and Biotechnological Sciences, Dental School, University G. D’Annunzio of Chieti-Pescara, 66100 Chieti, CH, Italy; (G.I.); (A.S.); (A.P.)
- Fondazione Villaserena per la Ricerca, 65013 Città S. Angelo, PE, Italy
- Casa di Cura Villa Serena del Dott. L. Petruzzi, 65013 Città S. Angelo, PE, Italy
| | - Alessandra Giuliani
- Department of Clinical Science, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, AN, Italy; (S.M.); (M.F.)
- Correspondence: ; Tel.: +39-0712204603
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14
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Tosco V, Vitiello F, Furlani M, Gatto ML, Monterubbianesi R, Giuliani A, Orsini G, Putignano A. Microleakage Analysis of Different Bulk-Filling Techniques for Class II Restorations: µ-CT, SEM and EDS Evaluations. Materials (Basel) 2020; 14:E31. [PMID: 33374708 PMCID: PMC7793523 DOI: 10.3390/ma14010031] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 12/29/2022]
Abstract
This study aimed to compare two different bulk-filling techniques, evaluating the internal and external adaptation of class II resin-composite restorations, by analysing the gap formation using microcomputed tomography (µ-CT) and scanning electronic microscopy (SEM) coupled with energy-dispersive X-ray spectroscopy (EDS). Two standardized mesio/disto-occlusal (MO/DO) cavities were prepared in eight extracted human third molars that were divided, according to the filling technique used, in the following two groups (n = 4): BG (Bulk&Go group) and BT (Bulk Traditional group). After universal bonding application, followed by the light curing, all teeth were restored using a bulk-fill composite. Specimens were scanned with µ-CT to evaluate 3D interfacial gaps. Acquired µ-CT data were analysed to quantify the gap formation. Complementary information to the µ-CT analysis were obtained by SEM. Thereafter, the chemical composition of tooth-restoration interface was analysed using EDS. The µ-CT analysis revealed gaps formation at the tooth-restoration interface for both the BG and BT groups, while within the restoration, only in the BT group there was evidence of microleakage formation. The scanning electron micrographs of both groups showed that the external marginal integrity of the restoration was preserved, while EDS showed the three different structures (tooth surface, adhesive layer and resin composite) of the tooth-restoration interface, highlighting the absence of gap formation. In both BG and BT, the two filling techniques did not show significant differences regarding the internal and external marginal adaptation of the restoration. To achieve a successful restoration, the clinician could be advised to restore a class II cavity using a single increment bulk-filling technique (BG), thus treating it as a class I cavity.
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Affiliation(s)
- Vincenzo Tosco
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, 60126 Ancona, Italy; (V.T.); (F.V.); (M.F.); (R.M.); (A.P.)
| | - Flavia Vitiello
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, 60126 Ancona, Italy; (V.T.); (F.V.); (M.F.); (R.M.); (A.P.)
| | - Michele Furlani
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, 60126 Ancona, Italy; (V.T.); (F.V.); (M.F.); (R.M.); (A.P.)
| | - Maria Laura Gatto
- Department of Materials, Environmental Sciences and Urban Planning (SIMAU), Polytechnic University of Marche, 60131 Ancona, Italy;
| | - Riccardo Monterubbianesi
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, 60126 Ancona, Italy; (V.T.); (F.V.); (M.F.); (R.M.); (A.P.)
| | - Alessandra Giuliani
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, 60126 Ancona, Italy; (V.T.); (F.V.); (M.F.); (R.M.); (A.P.)
| | - Giovanna Orsini
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, 60126 Ancona, Italy; (V.T.); (F.V.); (M.F.); (R.M.); (A.P.)
| | - Angelo Putignano
- Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, 60126 Ancona, Italy; (V.T.); (F.V.); (M.F.); (R.M.); (A.P.)
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15
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Patini R, Saponaro G, Todaro M, Doneddu P, Gallenzi P, De Angelis P, Pelosi A, Furlani M, Peverini F, D'Errico B, Raffaelli L, Gasparini G. Is the success of treatment of obstructive sleep apnea related to operator experience? J BIOL REG HOMEOS AG 2020; 34:1941-1948. [PMID: 33155457 DOI: 10.23812/20-327-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- R Patini
- Department of Head, Neck and Sense Organs, "Fondazione Policlinico A. Gemelli", IRCCS, Catholic University of Sacred Heart, Rome, Italy
| | - G Saponaro
- Department of Head, Neck and Sense Organs, "Fondazione Policlinico A. Gemelli", IRCCS, Catholic University of Sacred Heart, Rome, Italy
| | - M Todaro
- Department of Head, Neck and Sense Organs, "Fondazione Policlinico A. Gemelli", IRCCS, Catholic University of Sacred Heart, Rome, Italy
| | - P Doneddu
- Department of Head, Neck and Sense Organs, "Fondazione Policlinico A. Gemelli", IRCCS, Catholic University of Sacred Heart, Rome, Italy
| | - P Gallenzi
- Department of Head, Neck and Sense Organs, "Fondazione Policlinico A. Gemelli", IRCCS, Catholic University of Sacred Heart, Rome, Italy
| | - P De Angelis
- Department of Head, Neck and Sense Organs, "Fondazione Policlinico A. Gemelli", IRCCS, Catholic University of Sacred Heart, Rome, Italy
| | - A Pelosi
- Private Dentist specialist in Snore and Sleep Apnea Disorders, Italy
| | - M Furlani
- UOC Maxillofacial Surgery, Santa Chiara Hospital, Trento, Italy
| | - F Peverini
- Sleep Medicine - Fondazione per la Ricerca e la Cura dei Disturbi del Sonno, Italy
| | - B D'Errico
- Private Dentist specialist in Snore and Sleep Apnea Disorders, Italy
| | - L Raffaelli
- Department of Head, Neck and Sense Organs, "Fondazione Policlinico A. Gemelli", IRCCS, Catholic University of Sacred Heart, Rome, Italy
| | - G Gasparini
- Department of Head, Neck and Sense Organs, "Fondazione Policlinico A. Gemelli", IRCCS, Catholic University of Sacred Heart, Rome, Italy
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Bandara TMWJ, Furlani M, Albinsson I, Wulff A, Mellander BE. Diatom frustules enhancing the efficiency of gel polymer electrolyte based dye-sensitized solar cells with multilayer photoelectrodes. Nanoscale Adv 2020; 2:199-209. [PMID: 36134008 PMCID: PMC9419529 DOI: 10.1039/c9na00679f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 12/14/2019] [Indexed: 06/01/2023]
Abstract
The incorporation of nanostructures that improve light scattering and dye adsorption has been suggested for dye-sensitized solar cells (DSSCs), but the manufacture of photonic and nanostructured materials with the desired properties is not an easy task. In nature, however, the process of light-harvesting for photosynthesis has, in some cases, evolved structures with remarkable wavelength-sensitive light-trapping properties. The present work is focused on enhancing the efficiency of quasi solid-state DSSCs by capitalizing on the light trapping properties of diatom frustules since they provide complex 3-dimensional structures for scattering and trapping light. This study reports a promising approach to prepare TiO2 nanocrystal (14 nm) based photo-electrodes by utilizing the waveguiding and photon localization effects of nanostructured diatom frustules for enhancing light harvesting without deteriorating the electron conduction. Single and double-layered photo-electrodes were prepared with different frustule/nanocrystal combinations and conformations on transparent conductive oxide substrates. This study clearly reports impressive efficiency and short circuit current density enhancements of about 35% and 39%, respectively, due to the incorporation of diatom frustules extracted from a ubiquitous species. The SEM images obtained in this work reveal that the produced thin films had a remarkable surface coverage of evenly distributed frustules within the TiO2 nanoparticle layer. To the best of our knowledge, this study reports the first quasi solid-state DSSC based on a photo-electrode with incorporated bio-formed nanostructures.
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Affiliation(s)
- T M W J Bandara
- Department of Physics, Chalmers University of Technology Gothenburg Sweden
- Department of Physics, Postgraduate Institute of Science, University of Peradeniya Sri Lanka
| | - M Furlani
- Department of Physics, University of Gothenburg Gothenburg Sweden
| | - I Albinsson
- Department of Physics, University of Gothenburg Gothenburg Sweden
| | - Angela Wulff
- Department of Biological and Environmental Sciences, University of Gothenburg Gothenburg Sweden
| | - B-E Mellander
- Department of Physics, Chalmers University of Technology Gothenburg Sweden
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Bandara T, Fernando H, Furlani M, Albinsson I, Ratnasekera J, DeSilva LA, Dissanayake M, Mellander BE. Combined effect of alkaline cations and organic additives for iodide ion conducting gel polymer electrolytes to enhance efficiency in dye sensitized solar cells. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.08.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bandara TMWJ, Fernando HDNS, Furlani M, Albinsson I, Dissanayake MAKL, Ratnasekera JL, Mellander BE. Effect of the alkaline cation size on the conductivity in gel polymer electrolytes and their influence on photo electrochemical solar cells. Phys Chem Chem Phys 2016; 18:10873-81. [DOI: 10.1039/c6cp00013d] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The nature and concentration of cationic species in the electrolyte exert a profound influence on the efficiency of nanocrystalline dye-sensitized solar cells (DSSCs).
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Affiliation(s)
- T. M. W. J. Bandara
- Department of Physics
- Chalmers University of Technology
- Gothenburg
- Sweden
- Department of Physical Sciences
| | - H. D. N. S. Fernando
- Department of Physics
- Chalmers University of Technology
- Gothenburg
- Sweden
- Department of Physical Sciences
| | - M. Furlani
- Department of Physics
- University of Gothenburg
- Gothenburg
- Sweden
| | - I. Albinsson
- Department of Physics
- University of Gothenburg
- Gothenburg
- Sweden
| | - M. A. K. L. Dissanayake
- National Institute of Fundamental Studies
- Kandy
- Sri Lanka
- Postgraduate Institute of Science
- University of Peradeniya
| | - J. L. Ratnasekera
- Department of Physical Sciences
- Rajarata University of Sri Lanka
- Mihintale
- Sri Lanka
| | - B.-E. Mellander
- Department of Physics
- Chalmers University of Technology
- Gothenburg
- Sweden
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Bandara TWJ, Fernando HDNS, Furlani M, Albinsson I, Dissanayake MAKL, Mellander BE. Performance enhancers for gel polymer electrolytes based on LiI and RbI for quasi-solid-state dye sensitized solar cells. RSC Adv 2016. [DOI: 10.1039/c6ra22335d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Performance enhancers improved the efficiency in LiI based and RbI based solar cells by 449 and 35.7% respectively.
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Affiliation(s)
- T. M. W. J. Bandara
- Department Physics
- Chalmers University of Technology
- Gothenburg
- Sweden
- Department of Physical Sciences
| | - H. D. N. S. Fernando
- Department Physics
- Chalmers University of Technology
- Gothenburg
- Sweden
- Department of Physical Sciences
| | - M. Furlani
- Department of Physics
- University of Gothenburg
- Gothenburg
- Sweden
| | - I. Albinsson
- Department of Physics
- University of Gothenburg
- Gothenburg
- Sweden
| | | | - B.-E. Mellander
- Department Physics
- Chalmers University of Technology
- Gothenburg
- Sweden
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Bandara TMWJ, Jayasundara WJMJSR, Fernado HDNS, Dissanayake MAKL, De Silva LAA, Albinsson I, Furlani M, Mellander BE. Efficiency of 10 % for quasi-solid state dye-sensitized solar cells under low light irradiance. J APPL ELECTROCHEM 2015. [DOI: 10.1007/s10800-015-0788-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Rugolotto S, Bertolini A, Cogo I, Pietrobelli A, Pecori S, Furlani M, Padovani EM. [Epignathus, hypolastic left heart syndrome, and trisomy 18 in a small for gestational age female twin]. Pediatr Med Chir 2013; 35:191-3. [PMID: 24245103 DOI: 10.4081/pmc.2013.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We describe a rare association of hypoplastic left heart syndrome, trismony 18, and epignathus in a 970 g female twin born at 37 weeks of gestational age. She died at 24 hours of age. Neonatologists and obstetricians should be aware of this rare association for a thorough prenatal counselling.
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Affiliation(s)
- S Rugolotto
- Department of Pediatrics - Section of Newborn Intensive Care Unit, Azienda Ospedaliera Universitaria Integrata of Verona, Italy.
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Malacco E, Magni A, Scandiani L, Casini A, Albano S, Ansuini R, Biasion T, Biffi E, Bilardo G, Boccuzzi G, Breda E, Buttafarro A, Chella PS, Chieffo C, Coletta D, Coli L, Colombo L, Compagnoni A, D’Amico G, D’Ascia C, Gregori M, Joannon U, Distante R, Donadon V, Donnini P, Fallucca F, Ferrari L, Fesce E, Formoso L, Furlani M, Galetta F, Gianni R, Giustina G, Irace L, Lipizer A, Maggio F, Magri F, Mangiameli S, Marasco S, Marchetti M, Marrazza B, Melandri F, Mondillo G, Montagnani M, Napoli C, Neri GF, Orlandi M, Pantaleoni M, Papa A, Perrella G, Pileggi V, Pilleri GP, Pittalis M, Piva M, Resta F, Rodari T, Savastano A, Savona M, Sensi S, Sorrentino F, Squadrito S, Stocchiero C, Stranieri A, Susco G, Tani F, Tassone F, Taverniti R, Terrosu PF, Tirella G, Vicario A. Pravastatin vs Gemfibrozil in the Treatment of Primary Hypercholesterolaemia. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/bf03258475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Furlani M, Albinsson I, Mellander BE, Appetecchi G, Passerini S. Annealing protocols for pyrrolidinium bis(trifluoromethylsulfonyl)imide type ionic liquids. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.08.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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D'Agostino A, Toffanetti G, Trevisiol L, Ferrari F, Furlani M, Albanese M. Maxillary post-traumatic outcome correction. Literature review and personal experience. Part III: loss of maxillary substance (free flaps-distraction osteogenesis). Minerva Stomatol 2004; 53:417-28. [PMID: 15278020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Revascularised free flaps retain dual vascularisation, both periosteal and medullary, undoubtedly present optimal survival and minimal re-absorption in view of the prevalence of osteogenetic rather than osteoclastic phenomena. A revascularised free bone flap involves the transfer of a certain amount of bone tissue, whether or not associated with a muscular, skin and/or facial component, with the features of an axial flap, dissecting the vascular stalk of the donor site and re-anastomosing both the arterial and the venous components on to recipient vessels in the site of the primary defect. The vessels in question measure only about 2-4 mm, so that micro-surgery techniques must be applied. For bone defects less than 6 cm, with upkeep of the mandibular or maxillary cortical bone and preservation of the soft tissues, with residual bone of at least 8 mm in height and 4 mm in thickness, alveolar distraction may represent a valid alternative to bone grafts, at the same time as ensuring an increase of the alveolar bone and intraoral soft tissues involved in the distraction process.
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Affiliation(s)
- A D'Agostino
- Section of Maxillo-Facial Surgery and Dentistry, Department of Morphological-Biomedical Sciences, University of Verona, Verona, Italy
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