Base de dados : MEDLINE
Pesquisa : D25.339.208 [Categoria DeCS]
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[PMID]:29185313
[Au] Autor:Christensen R
[Ti] Título:Focus on: Translucent Zirconia.
[So] Source:Dent Today;35(9):14, 2016 Sep.
[Is] ISSN:8750-2186
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Ligas Dentárias
Porcelana Dentária
Reparação de Restauração Dentária
Zircônio
[Mh] Termos MeSH secundário: Seres Humanos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dental Alloys); 12001-21-7 (Dental Porcelain); C6V6S92N3C (Zirconium); S38N85C5G0 (zirconium oxide)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171221
[Lr] Data última revisão:
171221
[Sb] Subgrupo de revista:D
[Da] Data de entrada para processamento:171201
[St] Status:MEDLINE


  2 / 8830 MEDLINE  
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[PMID]:29182236
[Au] Autor:Skramstad M; DiTolla MC
[Ti] Título:Single-Visit Chairside Zirconia.
[So] Source:Dent Today;35(8):84, 86-7, 2016 Aug.
[Is] ISSN:8750-2186
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Coroas
Ligas Dentárias
Planejamento de Prótese Dentária
Zircônio
[Mh] Termos MeSH secundário: Projeto Auxiliado por Computador
Seres Humanos
Masculino
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dental Alloys); C6V6S92N3C (Zirconium); S38N85C5G0 (zirconium oxide)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171221
[Lr] Data última revisão:
171221
[Sb] Subgrupo de revista:D
[Da] Data de entrada para processamento:171129
[St] Status:MEDLINE


  3 / 8830 MEDLINE  
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[PMID]:29182231
[Au] Autor:Nazarian A
[Ti] Título:Custom Abutments and Monolithic Zirconia: Aesthetic, Cementable Solutions for Complete Edentulism.
[So] Source:Dent Today;35(8):72, 74-7, 2016 Aug.
[Is] ISSN:8750-2186
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Dente Suporte
Ligas Dentárias
Prótese Dentária Fixada por Implante
Estética Dentária
Boca Edêntula/terapia
Zircônio
[Mh] Termos MeSH secundário: Tomografia Computadorizada de Feixe Cônico
Seres Humanos
Masculino
Meia-Idade
Boca Edêntula/diagnóstico por imagem
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dental Alloys); C6V6S92N3C (Zirconium); S38N85C5G0 (zirconium oxide)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171221
[Lr] Data última revisão:
171221
[Sb] Subgrupo de revista:D
[Da] Data de entrada para processamento:171129
[St] Status:MEDLINE


  4 / 8830 MEDLINE  
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[PMID]:28869626
[Au] Autor:Rylska D; Sokolowski G; Sokolowski J; Lukomska-Szymanska M
[Ad] Endereço:Institute of Materials Science and Engineering, Technical University of Lódz, Lódz, Poland.
[Ti] Título:Chemical passivation as a method of improving the electrochemical corrosion resistance of Co-Cr-based dental alloy.
[So] Source:Acta Bioeng Biomech;19(2):73-78, 2017.
[Is] ISSN:1509-409X
[Cp] País de publicação:Poland
[La] Idioma:eng
[Ab] Resumo:PURPOSE: The purpose of the study was to evaluate corrosion resistance of Wirobond C® alloy after chemical passivation treatment. METHODS: The alloy surface undergone chemical passivation treatment in four different media. Corrosion studies were carried out by means of electrochemical methods in saline solution. Corrosion effects were determined using SEM. RESULTS: The greatest increase in the alloy polarization resistance was observed for passive layer produced in Na2SO4 solution with graphite. The same layer caused the highest increase in corrosion current. Generally speaking, the alloy passivation in Na2SO4 solution with graphite caused a substantial improvement of the corrosion resistance. The sample after passivation in Na2SO4 solution without graphite, contrary to others, lost its protective properties along with successive anodic polarization cycles. The alloy passivation in Na3PO4 solution with graphite was the only one that caused a decrease in the alloy corrosion properties. The SEM studies of all samples after chemical passivation revealed no pit corrosion - in contrast to the sample without any modification. CONCLUSIONS: Every successive polarization cycle in anodic direction of pure Wirobond C® alloy enhances corrosion resistance shifting corrosion potential in the positive direction and decreasing corrosion current value. The chemical passivation in solutions with low pH values decreases susceptibility to electrochemical corrosion of Co-Cr dental alloy. The best protection against corrosion was obtained after chemical passivation of Wirobond C® in Na2SO4 solution with graphite. Passivation with Na2SO4 in solution of high pH does not cause an increase in corrosion resistance of WIROBOND C. Passivation process increases alloy resistance to pit corrosion.
[Mh] Termos MeSH primário: Ligas de Cromo/síntese química
Materiais Revestidos Biocompatíveis/síntese química
Ligas Dentárias/síntese química
Materiais Dentários/síntese química
Galvanoplastia/métodos
Grafite/química
Sulfatos/química
[Mh] Termos MeSH secundário: Corrosão
Concentração de Íons de Hidrogênio
Teste de Materiais
Cloreto de Sódio/química
Propriedades de Superfície
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Chromium Alloys); 0 (Coated Materials, Biocompatible); 0 (Dental Alloys); 0 (Dental Materials); 0 (Sulfates); 0YPR65R21J (sodium sulfate); 451W47IQ8X (Sodium Chloride); 7782-42-5 (Graphite)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171109
[Lr] Data última revisão:
171109
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170905
[St] Status:MEDLINE


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[PMID]:28759201
[Au] Autor:Oellers T; König D; Kostka A; Xie S; Brugger J; Ludwig A
[Ad] Endereço:Institute for Materials, Faculty of Mechanical Engineering, Ruhr-Universität Bochum , 44801 Bochum, Germany.
[Ti] Título:Shape Memory Micro- and Nanowire Libraries for the High-Throughput Investigation of Scaling Effects.
[So] Source:ACS Comb Sci;19(9):574-584, 2017 Sep 11.
[Is] ISSN:2156-8944
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The scaling behavior of Ti-Ni-Cu shape memory thin-film micro- and nanowires of different geometry is investigated with respect to its influence on the martensitic transformation properties. Two processes for the high-throughput fabrication of Ti-Ni-Cu micro- to nanoscale thin film wire libraries and the subsequent investigation of the transformation properties are reported. The libraries are fabricated with compositional and geometrical (wire width) variations to investigate the influence of these parameters on the transformation properties. Interesting behaviors were observed: Phase transformation temperatures change in the range from 1 to 72 °C (austenite finish, (A ), 13 to 66 °C (martensite start, M ) and the thermal hysteresis from -3.5 to 20 K. It is shown that a vanishing hysteresis can be achieved for special combinations of sample geometry and composition.
[Mh] Termos MeSH primário: Ligas/química
Nanofios/química
Bibliotecas de Moléculas Pequenas/química
[Mh] Termos MeSH secundário: Cobre/química
Ligas Dentárias/química
Teste de Materiais
Níquel/química
Tamanho da Partícula
Temperatura Ambiente
Titânio/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Alloys); 0 (Dental Alloys); 0 (Small Molecule Libraries); 12173-93-2 (Martensite); 12244-31-4 (Austenite); 789U1901C5 (Copper); 7OV03QG267 (Nickel); D1JT611TNE (Titanium)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171108
[Lr] Data última revisão:
171108
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170801
[St] Status:MEDLINE
[do] DOI:10.1021/acscombsci.7b00065


  6 / 8830 MEDLINE  
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[PMID]:28697204
[Au] Autor:Ye H; Ning J; Li M; Niu L; Yang J; Sun Y; Zhou Y
[Ti] Título:Preliminary Clinical Application of Removable Partial Denture Frameworks Fabricated Using Computer-Aided Design and Rapid Prototyping Techniques.
[So] Source:Int J Prosthodont;30(4):348-353, 2017 Jul/Aug.
[Is] ISSN:0893-2174
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: The aim of this study was to explore the application of computer-aided design and rapid prototyping (CAD/RP) for removable partial denture (RPD) frameworks and evaluate the fitness of the technique for clinical application. MATERIALS AND METHODS: Three-dimensional (3D) images of dentition defects were obtained using a lab scanner. The RPD frameworks were designed using commercial dental software and manufactured using selective laser melting (SLM). A total of 15 cases of RPD prostheses were selected, wherein each patient received two types of RPD frameworks, prepared by CAD/RP and investment casting. Primary evaluation of the CAD/RP framework was performed by visual inspection. The gap between the occlusal rest and the relevant rest seat was then replaced using silicone, and the specimens were observed and measured. Paired t test was used to compare the average thickness and distributed thickness between the CAD/RP and investment casting frameworks. Analysis of variance test was used to compare the difference in thickness among different zones. RESULTS: The RPD framework was designed and directly manufactured using the SLM technique. CAD/RP frameworks may meet the clinical requirements with satisfactory retention and stability and no undesired rotation. Although the average gap between the occlusal rest and the corresponding rest seat of the CAD/RP frameworks was slightly larger than that of the investment casting frameworks (P < .05), it was acceptable for clinical application. CONCLUSION: RPD frameworks can be designed and fabricated directly using digital techniques with acceptable results in clinical application.
[Mh] Termos MeSH primário: Projeto Auxiliado por Computador
Planejamento de Dentadura/métodos
Prótese Parcial Removível
[Mh] Termos MeSH secundário: Adulto
Idoso
Ligas Dentárias
Técnica de Fundição Odontológica
Feminino
Seres Humanos
Imagem Tridimensional
Arcada Parcialmente Edêntula/reabilitação
Masculino
Meia-Idade
Software
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dental Alloys)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170913
[Lr] Data última revisão:
170913
[Sb] Subgrupo de revista:D
[Da] Data de entrada para processamento:170712
[St] Status:MEDLINE
[do] DOI:10.11607/ijp.5270


  7 / 8830 MEDLINE  
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[PMID]:28613056
[Au] Autor:Liu YF; Yu H; Wang WN; Gao B
[Ad] Endereço:Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Xi'an 710032, China.
[Ti] Título:[A preliminary study on the forming quality of titanium alloy removable partial denture frameworks fabricated by selective laser melting].
[So] Source:Zhonghua Kou Qiang Yi Xue Za Zhi;52(6):351-354, 2017 Jun 09.
[Is] ISSN:1002-0098
[Cp] País de publicação:China
[La] Idioma:chi
[Ab] Resumo:To evaluate the processing accuracy, internal quality and suitability of the titanium alloy frameworks of removable partial denture (RPD) fabricated by selective laser melting (SLM) technique, and to provide reference for clinical application. The plaster model of one clinical patient was used as the working model, and was scanned and reconstructed into a digital working model. A RPD framework was designed on it. Then, eight corresponding RPD frameworks were fabricated using SLM technique. Three-dimensional (3D) optical scanner was used to scan and obtain the 3D data of the frameworks and the data was compared with the original computer aided design (CAD) model to evaluate their processing precision. The traditional casting pure titanium frameworks was used as the control group, and the internal quality was analyzed by X-ray examination. Finally, the fitness of the frameworks was examined on the plaster model. The overall average deviation of the titanium alloy RPD framework fabricated by SLM technology was (0.089±0.076) mm, the root mean square error was 0.103 mm. No visible pores, cracks and other internal defects was detected in the frameworks. The framework fits on the plaster model completely, and its tissue surface fitted on the plaster model well. There was no obvious movement. The titanium alloy RPD framework fabricated by SLM technology is of good quality.
[Mh] Termos MeSH primário: Ligas Dentárias/normas
Técnica de Fundição Odontológica
Planejamento de Dentadura
Prótese Parcial Removível/normas
Lasers
Titânio
[Mh] Termos MeSH secundário: Projeto Auxiliado por Computador
Seres Humanos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dental Alloys); D1JT611TNE (Titanium)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170906
[Lr] Data última revisão:
170906
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:170615
[St] Status:MEDLINE
[do] DOI:10.3760/cma.j.issn.1002-0098.2017.06.006


  8 / 8830 MEDLINE  
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[PMID]:28613055
[Au] Autor:Ye Y; Xiong YY; Zhu JR; Sun J
[Ad] Endereço:Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & Shanghai Key Laboratory of Stomatology, Shanghai 200011, China.
[Ti] Título:[Comparison of adaptation and microstructure of titanium upper complete denture base fabricated by selecting laser melting and electron beam melting].
[So] Source:Zhonghua Kou Qiang Yi Xue Za Zhi;52(6):346-350, 2017 Jun 09.
[Is] ISSN:1002-0098
[Cp] País de publicação:China
[La] Idioma:chi
[Ab] Resumo:To fabricate Ti alloy frameworks for a maxillary complete denture with three-dimensional printing (3DP) technique, such as selective laser melting (SLM) and electron beam melting (EBM), and to evaluate the microstructure of these frameworks and their adaptation to the die stone models. Thirty pairs of edentulous casts were divided into 3 groups randomly and equally. In each group, one of the three techniques (SLM, EBM, conventional technique) was used to fabricate Ti alloy frameworks. The base-cast sets were transversally sectioned into 3 sections at the distal of canines, mesial of first molars, and the posterior palatal zone. The gap between the metal base and cast was measured in the 3 sections. Stereoscopic microscope was used to measure the gap. Three pieces of specimens of 5 mm diameter were fabricated with Ti alloy by SLM, EBM and the traditional casting technology (as mentioned above). Scanning electron microscope (SEM) was used to evaluate the differences of microstructure among these specimens. The gaps between the metal base and cast were (99.4±17.0), (98.2±26.1), and (99.6± 16.1) µm in conventional method; (99.4 ± 22.8), (83.1 ± 19.3), and (103.3 ± 13.8) µm in SLM technique; (248.3±70.3), (279.1±71.9), and (189.1±31.6) µm in EBM technique. There was no statistical difference in the value of gaps between SLM Ti alloy and conventional method Ti alloy group ( 0.05). There was statistical difference among EBM Ti alloy, conventional method Ti alloy and SLM Ti alloy group ( 0.05). The SLM Ti alloy showed more uniform and compact microstructure than the cast Ti alloy and EBM Ti alloy did. SLM technique showed initial feasibility to manufacture the dental base of complete denture. The mechanical properties and microstructure of the denture frameworks prepared by SLM indicate that these dentures are appropriate for clinical use. EBM technique is inadequate to make a complete denture now.
[Mh] Termos MeSH primário: Técnica de Fundição Odontológica
Prótese Total
Lasers
Impressão Tridimensional
Titânio
[Mh] Termos MeSH secundário: Ligas de Cromo
Ligas Dentárias
Elétrons
Estudos de Viabilidade
Seres Humanos
Boca Edêntula
Distribuição Aleatória
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Chromium Alloys); 0 (Dental Alloys); D1JT611TNE (Titanium)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170906
[Lr] Data última revisão:
170906
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:170615
[St] Status:MEDLINE
[do] DOI:10.3760/cma.j.issn.1002-0098.2017.06.005


  9 / 8830 MEDLINE  
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[PMID]:28474075
[Au] Autor:Qian YM; Zhong Q; Chen S
[Ad] Endereço:Department of Prosthodontics, Shanghai Stomatological Disease Center, Shanghai Stomatological Hospital. Shanghai 200031, China. E-mail:graceyumei@163.com.
[Ti] Título:[Comparison of clinical effects of Co-Cr alloy cast post-core and everStick fiber post in restoration of labially or lingually inclined maxillary central incisor].
[So] Source:Shanghai Kou Qiang Yi Xue;26(1):89-93, 2017 Feb.
[Is] ISSN:1006-7248
[Cp] País de publicação:China
[La] Idioma:chi
[Ab] Resumo:PURPOSE: To compare the clinical effect of Co-Cr alloy cast post-core and everStick fiber post in restoration of maxillary central incisor with labial or lingual inclination, and provide theoretical basis for clinical application. METHODS: Ninety-seven labially or lingually inclined maxillary central incisors were treated in our hospital from March 2012 to March 2014. The patients were randomly divided into group A (n=49) and group B (n=48), and received post -core and crown restoration. Patients in group A underwent Co-Cr alloy cast post and core restoration and patients in group B underwent everStick fiber post and core restoration. After two-year of follow-up, root fracture, post break, crown or post dislodgment and gingival marginal discoloration were recorded and analyzed using SPSS 19.0 software package. RESULTS: Chi-square test showed that the success rate of restoration was significantly different between 2 groups (P<0.05). The incidence of root fracture and gingival marginal discoloration of Co-Cr alloy cast post-core was higher than that of everStick fiber post, but there was no significant difference in the incidence of post break, crown or post dislodgment. CONCLTSIONS: EverStick fiber post is better than Co-Cr alloy cast post and core to prevent root fracture and gingival marginal discoloration. Its fracture pattern is repairable and favorable for preserving tooth.
[Mh] Termos MeSH primário: Resinas Compostas
Ligas Dentárias
Incisivo
Técnica para Retentor Intrarradicular
[Mh] Termos MeSH secundário: Ligas
Coroas
Análise do Estresse Dentário
Seres Humanos
Coroa do Dente
Fraturas dos Dentes
Raiz Dentária
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (Alloys); 0 (Composite Resins); 0 (Dental Alloys); 0 (everStick)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170608
[Lr] Data última revisão:
170608
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:170506
[St] Status:MEDLINE


  10 / 8830 MEDLINE  
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[PMID]:28397822
[Au] Autor:Jiang S; Wang H; Wu Y; Liu X; Chen H; Yao M; Gault B; Ponge D; Raabe D; Hirata A; Chen M; Wang Y; Lu Z
[Ad] Endereço:State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China.
[Ti] Título:Ultrastrong steel via minimal lattice misfit and high-density nanoprecipitation.
[So] Source:Nature;544(7651):460-464, 2017 04 27.
[Is] ISSN:1476-4687
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Next-generation high-performance structural materials are required for lightweight design strategies and advanced energy applications. Maraging steels, combining a martensite matrix with nanoprecipitates, are a class of high-strength materials with the potential for matching these demands. Their outstanding strength originates from semi-coherent precipitates, which unavoidably exhibit a heterogeneous distribution that creates large coherency strains, which in turn may promote crack initiation under load. Here we report a counterintuitive strategy for the design of ultrastrong steel alloys by high-density nanoprecipitation with minimal lattice misfit. We found that these highly dispersed, fully coherent precipitates (that is, the crystal lattice of the precipitates is almost the same as that of the surrounding matrix), showing very low lattice misfit with the matrix and high anti-phase boundary energy, strengthen alloys without sacrificing ductility. Such low lattice misfit (0.03 ± 0.04 per cent) decreases the nucleation barrier for precipitation, thus enabling and stabilizing nanoprecipitates with an extremely high number density (more than 10 per cubic metre) and small size (about 2.7 ± 0.2 nanometres). The minimized elastic misfit strain around the particles does not contribute much to the dislocation interaction, which is typically needed for strength increase. Instead, our strengthening mechanism exploits the chemical ordering effect that creates backstresses (the forces opposing deformation) when precipitates are cut by dislocations. We create a class of steels, strengthened by Ni(Al,Fe) precipitates, with a strength of up to 2.2 gigapascals and good ductility (about 8.2 per cent). The chemical composition of the precipitates enables a substantial reduction in cost compared to conventional maraging steels owing to the replacement of the essential but high-cost alloying elements cobalt and titanium with inexpensive and lightweight aluminium. Strengthening of this class of steel alloy is based on minimal lattice misfit to achieve maximal precipitate dispersion and high cutting stress (the stress required for dislocations to cut through coherent precipitates and thus produce plastic deformation), and we envisage that this lattice misfit design concept may be applied to many other metallic alloys.
[Mh] Termos MeSH primário: Precipitação Química
Nanopartículas/química
Nanotecnologia
Aço/química
[Mh] Termos MeSH secundário: Alumínio/química
Cobalto/química
Ligas Dentárias/química
Elasticidade
Teste de Materiais
Microscopia Eletrônica de Transmissão e Varredura
Nanopartículas/ultraestrutura
Aço/economia
Síncrotrons
Resistência à Tração
Titânio/química
Tomografia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL
[Nm] Nome de substância:
0 (Dental Alloys); 12173-93-2 (Martensite); 12597-69-2 (Steel); 3G0H8C9362 (Cobalt); CPD4NFA903 (Aluminum); D1JT611TNE (Titanium)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170818
[Lr] Data última revisão:
170818
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170412
[St] Status:MEDLINE
[do] DOI:10.1038/nature22032



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