Maria Elisa Rodrigues Coimbra

Maria Elisa Rodrigues Coimbra
Instituto Militar de Engenharia (IME) · Secção de Engenharia Mecânica e de Materiais

DDS, MSc, DSc in Materials Science

About

18
Publications
4,257
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81
Citations
Additional affiliations
August 2018 - present
Instituto Militar de Engenharia (IME)
Position
  • PostDoc Position
August 2018 - present
Instituto Militar de Engenharia (IME)
Position
  • PostDoc Position
November 2016 - present
Prev Odonto Centro de Estudos e Pesquisa
Position
  • Faculty Member
Education
January 2005 - December 2008
Instituto Militar de Engenharia (IME)
Field of study
  • Materials Science
February 2003 - December 2004
Federal University of Rio de Janeiro
Field of study
  • Orthodontics
March 2002 - December 2002
Federal University of Rio de Janeiro
Field of study
  • MBA - Saúde

Publications

Publications (18)
Article
Full-text available
Dental implant systems are composed of an implant, prosthetic components, and a crown. Since the implants are made of commercially pure Ti (cp Ti) and prosthetic components are often made of Ti and CoCrMo alloys, a galvanic couple between these two devices may lead to galvanic corrosion, ions release, and even loss of the implant. This study aimed...
Conference Paper
Full-text available
Resumo Diferentes materiais metálicos têm sido utilizados em aplicações biomédicas, dentre estes destacam-se os aços inoxidáveis, as ligas de cromo-cobalto e o titânio e suas ligas. Esses materiais possuem alta resistência mecânica, biocompatibilidade e alta resistência à corrosão. Essa alta resistência à corrosão está relacionada a capacidade dest...
Conference Paper
Full-text available
The search for synthetic materials that mimic tissues and organs or even, helps restore theirfunctionalities, makes the number of publications involving biomaterials grow considerably.Although be fundamental the restoration of the bone tissue in a lot of surgical cases, theapplication of bone graft during surgery still is limited. Composites develo...
Conference Paper
Full-text available
Resumo Diferentes materiais metálicos tem sido utilizados em aplicações biomédicas, dentre estes destacam-se os aços inoxidáveis, as ligas de cromo-cobalto e o titânio e suas ligas. Esses materiais possuem alta resistência mecânica, biocompatibilidade e alta resistência à corrosão. Essa alta resistência à corrosão está relacionada a capacidade dest...
Conference Paper
Full-text available
Different metallic materials are used for biomedical applications such as stainless steels, chromium-cobalt alloys and titanium and its alloys. These materials have high mechanical strength, biocompatibility and high corrosion resistance. This high corrosion resistance is related to the ability of these alloys to form a passive protective film on t...
Article
Full-text available
The search for synthetic materials that mimic tissues and organs or even, helps restore their functionalities, makes the number of publications involving biomaterials grow considerably. Although be fundamental to the restoration of the bone tissue in a lot of surgical cases, the application of bone graft during surgery still is limited. Composites...
Article
Full-text available
The Cr-Co-Mo alloys are commonly used in dentistry for prosthetic components and dental implant supported prosthesis. These alloys present high corrosion resistance owing to a passive oxide film on the surface. However, the oral environment is an aggressive system, due to pH variation, chloride and fluoride ions presence, that can decrease the meta...
Article
Full-text available
This study evaluated the in vitro degradation of pellet, powder and plates of poly-L-DL-lactic acid (PLDLLA) after two processing methods. Part of the material was reduced to powder by cryogenic milling and part of it molded injected in plate form. The crystallinity was evaluated by Differential Scanning Calorimetry (DSC), Fourier Transform Infrare...
Conference Paper
Full-text available
The development of orthodontic wires in the 80's and 90's, due to mechanical properties, was related to nickel-titanium shape memory and superelasticity effects. During the early leveling stages of orthodontics treatment, more physiologically bone response and acceptable tooth movement can be achieved if light, continuous forces were applied and th...
Article
Full-text available
OBJECTIVE: This in vitro study evaluated and compared the frictional resistance of stainless steel and polycarbonate (PC) composite brackets tied with metal wire and elastomeric ligation. METHODS: Four stainless steel and four polycarbonate composite brackets for premolars were placed in a universal testing machine for the traction of a piece of 0....
Article
Full-text available
OBJETIVO: a finalidade deste estudo in vitro foi avaliar e comparar a resistência friccional em braquetes de aço inoxidável e de policarbonato compósito amarrados com fio metálico e elastômeros. MÉTODOS: foram utilizados quatro braquetes de aço inoxidável e quatro de policarbonato compósito (PC) para pré-molares levados à máquina universal de ensai...
Article
Full-text available
This study aimed to physico/chemically characterize and evaluate the in vivo performance of a β-TCP particulate grafting material. SEM/TEM, and EDS and XPS were used for morphology and chemistry assessment, respectively. FTIR was used to determine Ca–P phases characteristic bands. Rietveld refinement/XRD spectra was performed for secondary phase de...
Conference Paper
Full-text available
Objectives: To evaluate the in vivo bone regeneration of four grafting materials in a critical size rabbit calvaria model. Methods: Pellet-shaped samples of poly-L-DL-lactic acid (PLDLLA 70/30 Purac, Gorinchen, The Netherlands) were transformed into powder at the size of the maxillofacial type particulate grafting by cryogenic milling. Two biores...
Article
Full-text available
Background: The purpose of this study was to physico/chemically characterize and evaluate the in vitro cytotoxicity/in vivo bone regeneration of two grafting materials in a rat calvaria model. Materials and Methods: Two particulate grafting materials, Hydroxyapatite (HA)/PLGA (poly [L-lactide-co-glycolide]) composite (MA1) and Tricalcium Phosphate...
Article
Full-text available
The objective of this study was to physico/chemically characterize a commercially available and a newly developed Bioglass and also to evaluate their degradation properties. Materials and Method: Two bioresorbable glasses were utilized, a bioglass synthesized at Chemical Engineering College (University of São Paulo, Lorena, São Paulo) (BG1), and th...
Article
Full-text available
The objective of this study was to evaluate the in vitro degradation of pellet and powder forms of a poly-L-D-lactic acid material used to produce plates and screws for orthopedic, oral, and maxillofacial applications. In order to produce the powder form the as-received pellets were milled in a cryogenic chamber. Particles size distribution (PSD) h...
Article
Full-text available
Understanding how teeth move in response to mechanical loads is an important aspect of orthodontic treatment. Treatment planning should include consideration of the appliances that will meet the desired loading of the teeth to result in optimized treatment outcomes. The purpose of this study was to evaluate the use of computer simulation to predict...

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