Base de dados : MEDLINE
Pesquisa : D01.268.557.800 [Categoria DeCS]
Referências encontradas : 32556 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 3256 ir para página                         

  1 / 32556 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
[PMID]:29203742
[Au] Autor:Faustova MO; Ananieva MM; Basarab YO; Loban' GA
[Ad] Endereço:Higher State Educational Establishment Of Ukraine " Ukrainian Medical Stomatological Academy", Poltava, Ukraine.
[Ti] Título:Neutrophil bactericidal activity through the stages of placement of different dental implants depending on their chemical composition.
[So] Source:Wiad Lek;70(5):921-924, 2017.
[Is] ISSN:0043-5147
[Cp] País de publicação:Poland
[La] Idioma:eng
[Ab] Resumo:INTRODUCTION: The analysis of data provided by implant system manufacturers has demonstrated that implants, i.e. parts screwed into the bone, are of different chemical composition of the implant. Sometimes they have little amount of metal contaminants,which are not biologically passive. THE AIM: To explore the effects produced by dental titanium implants containing metal contaminants on the stimulation of antimicrobial properties of neutrophils. MATERIAL AND METHODS: A total of 24 patients who had from 1 to 4 titanium implants with different chemical compositions were subjected to the comprehensive check-up to this end. The functional activity of neutrophils was evaluated by nitroblue tetrazolium (NBT) reduction test. It was dynamically in 5-7 days after the implant fitting into the bone, and in 3 months after the procedure of implant placement. RESULTS: On the 5-7th day following the placement of implants with weight percentage of titanium (Ti) in the composition from 25 to 50%, the share of active neutrophils significantly increased compared with share of active neutrophils prior the surgical procedure. However, after 3 months, this parameter in patients with implants, whose titanium content was low, remained significantly high. CONCLUSIONS: The placement of dental implants systems led to an increase in the share of active neutrophils in the peripheral blood of the patients in 5-7 days following the procedure of implant insertion. However, this indicator for implant systems with a higher content of Ti in the remote period returned to its original value, which indicates their higher biocompatibility with the tissues of the human body.
[Mh] Termos MeSH primário: Reação a Corpo Estranho/metabolismo
Mediadores da Inflamação/metabolismo
Inflamação/metabolismo
Neutrófilos/metabolismo
Titânio
[Mh] Termos MeSH secundário: Implantes Dentários
Materiais Dentários
Feminino
Seguimentos
Seres Humanos
Masculino
Meia-Idade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dental Implants); 0 (Dental Materials); 0 (Inflammation Mediators); D1JT611TNE (Titanium)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171206
[St] Status:MEDLINE


  2 / 32556 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28985653
[Au] Autor:Amiri H; Nabizadeh R; Silva Martinez S; Jamaleddin Shahtaheri S; Yaghmaeian K; Badiei A; Nazmara S; Naddafi K
[Ad] Endereço:Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
[Ti] Título:Response surface methodology modeling to improve degradation of Chlorpyrifos in agriculture runoff using TiO solar photocatalytic in a raceway pond reactor.
[So] Source:Ecotoxicol Environ Saf;147:919-925, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:This paper deals with the use of a raceway pond reactor (RPR) as an alternative photoreactor for solar photocatalytic applications. Raceway pond reactors are common low-cost reactors which can treat large volumes of water. The experiments were carried out with TiO in the agriculture effluent spiked with Chlorpyrifos (CPF) at circumneutral pH. The Response Surface Methodology (RSM) was used to find the optimum process parameters to maximize CPF oxidation from the mathematical model equations developed in this study using R software. By ANOVA, p-value of lack of fit > 0.05 indicated that, the equation was well-fitted. The theoretical efficiency of CPF removal, under the optimum oxidation conditions with UV solar energy of around 697 ± 5.33 lux, was 84.01%, which is in close agreement with the mean experimental value (80 ± 1.42%) confirming that the response model was suitable for the optimization. As far as the authors know, this is the first study of CPF removal using RPR in agriculture runoff at circumneutral pH.
[Mh] Termos MeSH primário: Clorpirifos/análise
Modelos Teóricos
Tanques/química
Luz Solar
Titânio/química
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Agricultura
Catálise
Clorpirifos/efeitos da radiação
Oxirredução
Propriedades de Superfície
Poluentes Químicos da Água/efeitos da radiação
Poluição da Água/prevenção & controle
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Water Pollutants, Chemical); 15FIX9V2JP (titanium dioxide); D1JT611TNE (Titanium); JCS58I644W (Chlorpyrifos)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171008
[St] Status:MEDLINE


  3 / 32556 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28946119
[Au] Autor:Wanag A; Rokicka P; Kusiak-Nejman E; Kapica-Kozar J; Wrobel RJ; Markowska-Szczupak A; Morawski AW
[Ad] Endereço:West Pomeranian University of Technology, Szczecin, Faculty of Chemical Technology and Engineering, Institute of Inorganic Technology and Environment Engineering, Pulaskiego 10, 70-322 Szczecin, Poland. Electronic address: awanag@zut.edu.pl.
[Ti] Título:Antibacterial properties of TiO modified with reduced graphene oxide.
[So] Source:Ecotoxicol Environ Saf;147:788-793, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:In this paper, the antibacterial activity of titanium dioxide modified with reduced graphene oxide (rGO) was presented. TiO /rGO photocatalysts were prepared by the hydrothermal method under elevated pressure at 180°C and heated at 100°C in Ar flow. The obtained photocatalysts were characterized by means of XRD, FTIR/DRS, UV-vis/DR, Raman spectroscopy and scanning electron microscopy (SEM). The carbon content was also examined. FTIR/DRS and Raman analysis confirmed the presence of rGO in the TiO structure, suggesting a successful modification. The antimicrobial photoactivity of photocatalysts was conducted against E. coli under an artificial solar light. The results show that all TiO /rGO photocatalysts exhibited an antibacterial activity higher than unmodified TiO . The best result was found for sample with 1.5wt% additive of reduced graphene oxide. In this case, total inactivation of E. coli was noticed after 75min of irradiation. It was found that the presence of rGO in sample improves the antimicrobial activity.
[Mh] Termos MeSH primário: Antibacterianos/farmacologia
Desinfecção/métodos
Escherichia coli/efeitos dos fármacos
Grafite/química
Titânio/farmacologia
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Antibacterianos/química
Catálise
Escherichia coli/efeitos da radiação
Óxidos/química
Propriedades de Superfície
Titânio/química
Raios Ultravioleta
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Bacterial Agents); 0 (Oxides); 15FIX9V2JP (titanium dioxide); 7782-42-5 (Graphite); D1JT611TNE (Titanium)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170926
[St] Status:MEDLINE


  4 / 32556 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27776448
[Au] Autor:Ye C; Zhang W; Jiang S; Yu Y; Zhou X; Zhu L; Xue D; He R
[Ad] Endereço:a Department of Orthopedic Surgery , the Second Affiliated Hospital, School of Medicine, Zhejiang University , Hangzhou , Zhejiang , China.
[Ti] Título:Platelet-derived growth factor-BB attenuates titanium-particle-induced osteolysis in vivo.
[So] Source:Growth Factors;34(5-6):177-186, 2016 12.
[Is] ISSN:1029-2292
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Inflammation and osteoclastogenesis play critical roles in wear-particle-induced periprosthetic osteolysis (WPO). Platelet-derived growth factor-BB (PDGF-BB) could promote osteogenesis and inhibit inflammatory response. The aim of this study was to investigate the impact of PDGF-BB on WPO. Mice were divided into four groups, namely, sham, vehicle, low-, and high-dose PDGF-BB groups. Mice in the rhPDGF-BB groups were treated with PDGF-BB at 0.25 or 1 mg/ml/kg/day. Mice in the sham and vehicle groups received PBS daily. Two weeks after surgery, calvariae were harvested. Immunohistochemical analysis and µ-CT showed that PDGF-BB significantly reduced osteoclast formation and bone resorption. ELISA showed that rhPDGF-BB decreased the secretion of TNF-α, IL-1ß, and IL-6. Western blotting revealed that rhPDGF-BB stimulated the expression of osteocalcin and osteoprotegerin. Furthermore, more VEGF and CD31 proteins were observed due to PDGF-BB by immunofluorescence. In conclusion, these findings suggest that rhPDGF-BB represents a potential treatment for WPO.
[Mh] Termos MeSH primário: Interface Osso-Implante/patologia
Osteólise/tratamento farmacológico
Proteínas Proto-Oncogênicas c-sis/uso terapêutico
Titânio/efeitos adversos
[Mh] Termos MeSH secundário: Animais
Interleucina-1beta/genética
Interleucina-1beta/metabolismo
Interleucina-6/genética
Interleucina-6/metabolismo
Camundongos
Camundongos Endogâmicos C57BL
Osteólise/etiologia
Molécula-1 de Adesão Celular Endotelial de Plaquetas/genética
Molécula-1 de Adesão Celular Endotelial de Plaquetas/metabolismo
Proteínas Proto-Oncogênicas c-sis/administração & dosagem
Fator de Necrose Tumoral alfa/genética
Fator de Necrose Tumoral alfa/metabolismo
Fator A de Crescimento do Endotélio Vascular/genética
Fator A de Crescimento do Endotélio Vascular/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Interleukin-1beta); 0 (Interleukin-6); 0 (Platelet Endothelial Cell Adhesion Molecule-1); 0 (Proto-Oncogene Proteins c-sis); 0 (Tumor Necrosis Factor-alpha); 0 (Vascular Endothelial Growth Factor A); 1B56C968OA (becaplermin); D1JT611TNE (Titanium)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180307
[Lr] Data última revisão:
180307
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161026
[St] Status:MEDLINE
[do] DOI:10.1080/08977194.2016.1240680


  5 / 32556 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28449759
[Au] Autor:Brignardello-Petersen R
[Ti] Título:Titanium-zirconium narrow-diameter implants may have good outcomes, but there is insufficient evidence to support their overall performance success.
[So] Source:J Am Dent Assoc;148(5):e55, 2017 05.
[Is] ISSN:1943-4723
[Cp] País de publicação:England
[La] Idioma:eng
[Mh] Termos MeSH primário: Titânio
Zircônio
[Mh] Termos MeSH secundário: Implantes Dentários
Planejamento de Prótese Dentária
Seres Humanos
Osseointegração
Propriedades de Superfície
[Pt] Tipo de publicação:REVIEW; COMMENT
[Nm] Nome de substância:
0 (Dental Implants); C6V6S92N3C (Zirconium); D1JT611TNE (Titanium)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE


  6 / 32556 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29232610
[Au] Autor:Sadeghi S; Mollahosseini A
[Ad] Endereço:Research Laboratory of Spectroscopy & Micro and Nano Extraction, Department of Chemistry, Iran University of Science and Technology, Tehran, Iran.
[Ti] Título:Electrospun polydimethylsiloxane/polyacrylonitrile/titanium dioxide nanofibers as a new coating for determination of alpha-linolenic acid in milk by direct immersion-solid phase nanoextraction.
[So] Source:J Chromatogr B Analyt Technol Biomed Life Sci;1073:43-50, 2018 Jan 15.
[Is] ISSN:1873-376X
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:In this study, polydimethylsiloxane/polyacrylonitrile/titanium dioxide (PDMS/PAN/TiO ) nanofibers were synthesized via electrospinning method to extract and quantify alpha-linolenic acid (ALA, C18:3), as a model analyte, in milk by direct immersion-solid phase nanoextraction (DI-SPNE) with gas chromatography-flame ionization detector (GC-FID). The affecting factors on the electrospinning process such as, PDMS concentration, amount of TiO nanoparticles (NPs), voltage, and electrospinning distance were optimized using Taguchi's orthogonal design. The SPNE experimental conditions such as, extraction time, agitation rate, pH and salt concentration, were also optimized using response surface methodology (RSM) based on a central composite design (CCD). Under optimized conditions, the resulting calibration curve was linear in the range of 1-4000ngmL with R =0.998. The intraday, interday, and fiber-to-fiber repeatability were calculated and the corresponding relative standard deviation was less than 9% in all the cases. The limit of detection and limit of quantification were found to be 0.2 and 0.6ngmL , respectively. Omega-3 enriched milk was used as a real sample and the value of relative recoveries were measured to be in the range of 92-106%.
[Mh] Termos MeSH primário: Leite/química
Nanofibras/química
Nanotecnologia/métodos
Microextração em Fase Sólida/métodos
Ácido alfa-Linolênico/análise
[Mh] Termos MeSH secundário: Resinas Acrílicas
Animais
Dimetilpolisiloxanos
Técnicas Eletroquímicas
Limite de Detecção
Modelos Lineares
Reprodutibilidade dos Testes
Titânio
Ácido alfa-Linolênico/isolamento & purificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acrylic Resins); 0 (Dimethylpolysiloxanes); 0RBV727H71 (alpha-Linolenic Acid); 15FIX9V2JP (titanium dioxide); 25014-41-9 (polyacrylonitrile); D1JT611TNE (Titanium)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171213
[St] Status:MEDLINE


  7 / 32556 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29478632
[Au] Autor:Movafeghi A; Khataee A; Abedi M; Tarrahi R; Dadpour M; Vafaei F
[Ad] Endereço:Department of Plant Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz 51666-16471, Iran. Electronic address: movafeghi@tabrizu.ac.ir.
[Ti] Título:Effects of TiO nanoparticles on the aquatic plant Spirodela polyrrhiza: Evaluation of growth parameters, pigment contents and antioxidant enzyme activities.
[So] Source:J Environ Sci (China);64:130-138, 2018 Feb.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Plants are essential components of all ecosystems and play a critical role in environmental fate of nanoparticles. However, the toxicological impacts of nanoparticles on plants are not well documented. Titanium dioxide nanoparticles (TiO -NPs) are produced worldwide in large quantities for a wide range of purposes. In the present study, the uptake of TiO -NPs by the aquatic plant Spirodela polyrrhiza and the consequent effects on the plant were evaluated. Initially, structural and morphological characteristics of the used TiO -NPs were determined using XRD, SEM, TEM and BET techniques. As a result, an anatase structure with the average crystalline size of 8nm was confirmed for the synthesized TiO -NPs. Subsequently, entrance of TiO -NP to plant roots was verified by fluorescence microscopic images. Activity of a number of antioxidant enzymes, as well as, changes in growth parameters and photosynthetic pigment contents as physiological indices were assessed to investigate the effects of TiO -NPs on S. polyrrhiza. The increasing concentration of TiO -NPs led to the significant decrease in all of the growth parameters and changes in antioxidant enzyme activities. The activity of superoxide dismutase enhanced significantly by the increasing concentration of TiO -NPs. Enhancement of superoxide dismutase activity could be explained as promoting antioxidant system to scavenging the reactive oxygen species. In contrast, the activity of peroxidase was notably decreased in the treated plants. Reduced peroxidase activity could be attributed to either direct effect of these particles on the molecular structure of the enzyme or plant defense system damage due to reactive oxygen species.
[Mh] Termos MeSH primário: Araceae/fisiologia
Nanopartículas/toxicidade
Titânio/toxicidade
Testes de Toxicidade
Poluentes Químicos da Água/toxicidade
[Mh] Termos MeSH secundário: Antioxidantes
Oxirredução
Estresse Oxidativo
Peroxidase
Superóxido Dismutase/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (Water Pollutants, Chemical); 15FIX9V2JP (titanium dioxide); D1JT611TNE (Titanium); EC 1.11.1.7 (Peroxidase); EC 1.15.1.1 (Superoxide Dismutase)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180227
[St] Status:MEDLINE


  8 / 32556 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29390311
[Au] Autor:Suwarsa O; Rahardjo RM; Sutedja E; Dharmadji HP; Hindritiani R; Gunawan H
[Ad] Endereço:Division of Allergy and Immunology, Department of Dermatology and Venereology, Faculty of Medicine, Universitas Padjadjaran-Dr. Hasan Sadikin Hospital, Bandung, Indonesia.
[Ti] Título:Systemic contact dermatitis due to corrosion of titanium-coated nickel and cobalt bone plate fixation: A case report.
[So] Source:Medicine (Baltimore);96(50):e9120, 2017 Dec.
[Is] ISSN:1536-5964
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:RATIONALE: Corrosion refers to the degradation of a material that occurs following its interaction with other substances in the environment. Corrosion of metallic substances into tissues may lead to inflammatory responses such as systemic contact dermatitis (SCD), a skin condition where an individual who has previously been sensitized to a particular allergen via the cutaneous route will subsequently react to same allergen via the systemic route. This condition occurs following exposure to allergens such as metals, medications, and certain food substances. In recent years, the use of metal plates for internal fixation has become increasingly common in bone fracture repairs. PATIENT CONCERNS: A 34-year-old Indonesian male presented with systemic erythema with itching 7 days following a bone plate fixation as a management for mandibular fracture. DIAGNOSES: Physical examination showed pruritic red macules, papules, and scales on almost his entire body, along with facial swelling. The patch test results revealed a positive reaction to nickel and cobalt. Therefore, the patient was diagnosed with SCD. INTERVENTIONS: The patient was treated with topical and systemic corticosteroids as well as bone plate removal. OUTCOME: After treatment, the eruption turned brown, the itching was resolved, and there were no facial swelling as well. LESSONS: This case report highlights the need to consider the occurrence of SCD in patients following bone plate fixation.
[Mh] Termos MeSH primário: Placas Ósseas
Dermatite de Contato/etiologia
Dermatite de Contato/terapia
Fixação Interna de Fraturas/instrumentação
Fraturas Mandibulares/cirurgia
[Mh] Termos MeSH secundário: Corticosteroides/uso terapêutico
Adulto
Cobalto
Corrosão
Remoção de Dispositivo
Seres Humanos
Masculino
Níquel
Testes do Emplastro
Titânio
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Adrenal Cortex Hormones); 3G0H8C9362 (Cobalt); 7OV03QG267 (Nickel); D1JT611TNE (Titanium)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:180203
[St] Status:MEDLINE
[do] DOI:10.1097/MD.0000000000009120


  9 / 32556 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29367659
[Au] Autor:Martin LJ; Akhavan B; Bilek MMM
[Ad] Endereço:School of Physics, University of Sydney, Sydney, NSW, 2006, Australia.
[Ti] Título:Electric fields control the orientation of peptides irreversibly immobilized on radical-functionalized surfaces.
[So] Source:Nat Commun;9(1):357, 2018 01 24.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Surface functionalization of an implantable device with bioactive molecules can overcome adverse biological responses by promoting specific local tissue integration. Bioactive peptides have advantages over larger protein molecules due to their robustness and sterilizability. Their relatively small size presents opportunities to control the peptide orientation on approach to a surface to achieve favourable presentation of bioactive motifs. Here we demonstrate control of the orientation of surface-bound peptides by tuning electric fields at the surface during immobilization. Guided by computational simulations, a peptide with a linear conformation in solution is designed. Electric fields are used to control the peptide approach towards a radical-functionalized surface. Spontaneous, irreversible immobilization is achieved when the peptide makes contact with the surface. Our findings show that control of both peptide orientation and surface concentration is achieved simply by varying the solution pH or by applying an electric field as delivered by a small battery.
[Mh] Termos MeSH primário: Materiais Biocompatíveis/química
Proteínas Imobilizadas/química
Peptídeos/química
Titânio/química
[Mh] Termos MeSH secundário: Adsorção
Sequência de Aminoácidos
Eletricidade
Eletrodos Implantados
Seres Humanos
Concentração de Íons de Hidrogênio
Neuroestimuladores Implantáveis
Propriedades de Superfície
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Biocompatible Materials); 0 (Immobilized Proteins); 0 (Peptides); D1JT611TNE (Titanium)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180227
[Lr] Data última revisão:
180227
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180126
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-017-02545-6


  10 / 32556 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27771189
[Au] Autor:Mandelli F; Gherlone E; Gastaldi G; Ferrari M
[Ad] Endereço:Oral Science Dept. Vita Salute IRCCS, San Raffaele University Milan, Italy; Department of Fixed Prosthodontics and Dental Materials, University of Siena, Siena, Italy. Electronic address: federico.mandelli@gmail.com.
[Ti] Título:Evaluation of the accuracy of extraoral laboratory scanners with a single-tooth abutment model: A 3D analysis.
[So] Source:J Prosthodont Res;61(4):363-370, 2017 10.
[Is] ISSN:2212-4632
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:PURPOSE: The aim of this study was to compare the accuracy of different laboratory scanners using a calibrated coordinate measuring machine as reference. METHODS: A sand blasted titanium reference model (RM) was scanned with an industrial 3D scanner in order to obtain a reference digital model (dRM) that was saved in the standard tessellation format (.stl). RM was scanned ten times with each one of the tested scanners (GC Europe Aadva, Zfx Evolution, 3Shape D640, 3Shape D700, NobilMetal Sinergia, EGS DScan3, Open Technologies Concept Scan Top) and all the scans were exported in .stl format for the comparison. All files were imported in a dedicated software (Geomagic Qualify 2013). Accuracy was evaluated calculating trueness and precision. RESULTS: Trueness values (µm [95% confidence interval]) were: Aadva 7,7 [6,8-8,5]; Zfx Evolution 9,2 [8,6-9,8]; D640 18,1 [12,2-24,0]; D700 12,8 [12,4-13,3]; Sinergia 31,1 [26,3-35,9]; DScan3 15,6 [11,5-19,7]; Concept Scan Top 28,6 [25,6-31,6]. Differences between scanners were statistically significant (p<.0005). Precision values (µm [95% CI]) were: Aadva 4,0 [3,8-4,2]; Zfx Evolution 5,1 [4,4-5,9]; D640 12,7 [12,4-13,1]; D700 11,0 [10,7-11,3]; Sinergia 16,3 [15,0-17,5]; DScan3 9,5 [8,3-10,6]; Concept Scan Top 19,5 [19,1-19,8]. Differences between scanners were statistically significant (p<.0005). CONCLUSIONS: The use a standardized scanning procedure fabricating a titanium reference model is useful to compare trueness and precision of different laboratory scanners; two laboratory scanners (Aadva, Zfx Evolution) were significantly better that other tested scanners.
[Mh] Termos MeSH primário: Dente Suporte
Modelos Dentários
Imagem Tridimensional
Tomografia Computadorizada por Raios X
[Mh] Termos MeSH secundário: Sensibilidade e Especificidade
Titânio
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
D1JT611TNE (Titanium)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180227
[Lr] Data última revisão:
180227
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE



página 1 de 3256 ir para página                         
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde