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    Wyświetlanie 1-6 z 6
    Tytuł:
    Biodegradowalne polimery z pamięcią kształtu
    Biodegradable shape memory polymers for medical purposes
    Autorzy:
    Jaros, A.
    Smola, A.
    Kasperczyk, J.
    Dobrzyński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/142033.pdf
    Data publikacji:
    2010
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Przemysłu Chemicznego. Zakład Wydawniczy CHEMPRESS-SITPChem
    Tematy:
    polimery z pamięcią kształtu
    SMP
    biodegradacja
    biozgodność
    implanty chirurgiczne
    shape memory polymers
    biodegradation
    biocompatibility
    surgical implants
    Opis:
    Praca stanowi krótki przegląd literaturowy dotyczący biodegradowalnych polimerów z pamięcią kształtu (SMP). Scharakteryzowano przebieg i mechanizm efektu pamięci kształtu w tego typu materiałach. Poruszono problem ich biozgodności. Przedstawiono przykłady polimerów SMP będących obiecującym materiałem do zastosowania w formowaniu implantów i narzędzi mogących znaleźć zastosowanie w chirurgii krótkoterminowej.
    The article is a brief review of biodegradable shape memory polymers (SMP). It has been described the mechanism of shape memory effect in such materials. The problem of their biocompatibility has been presented. They are enumerated examples of polymers SMP, that are promising material for use in the formation of implants and devices that can be used in short term surgery.
    Źródło:
    Chemik; 2010, 64, 2; 87-96
    0009-2886
    Pojawia się w:
    Chemik
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrochemical Behavior of Titanium Implants in Artificial Saliva After Laser Surface Treatment
    Autorzy:
    Biedunkiewicz, A.
    Dembowska, E.
    Figiel, P.
    Biedunkiewicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/356409.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    titanium implants
    peri-implantitis
    laser surgical procedure
    treatment
    Opis:
    Peri-implantitis is a pathological condition occurring in tissues around dental implants, characterized by inflammation in the peri-implant connective tissue and progressive loss of supporting bone. In the treatment of peri-implantitis, a laser surgical technique is used. Lasers are a safe and gentle alternative to traditional dental tools. They allow oral surgeons and dentists to accomplish more complex tasks, reduce blood loss, decrease post-operative discomfort, reduce the chance of wound infection, achieve better wound healing and perform some procedures in close methods without access flap. The aim of the work was to determine the impact of laser surface treatment of titanium dental implants on its electrochemical behavior in artificial saliva at 37°C. The study used an Er, Cr: YSGG laser and diode lasers 810 nm and 980 nm for debridement of titanium implant surface. In the research, the thread on the surface of implant was scanned with the diode laser beam of energy 1, 1.25, 1.5 and 2 W, cw and Er, Cr YSGG: 1,5 and 2 W, pulse 30 Hz.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 1; 91-97
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improved adhesion and growth of osteoblast-like MG-63 cells in cultures on titanium modified by gold particles
    Autorzy:
    Parizek, M.
    Base, T.
    Hruby, M.
    Lisa, V.
    Bacakova, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/285778.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    metallic materials
    titanium
    surgical implants
    gold microparticles
    cell adhesion
    cell growth
    Opis:
    Metallic materials are important for load-bearing bone implants. The osteointegration of these implants can be improved by appropriate surface modifications. Therefore, we present here a study of the cell growth on titanium surfaces modified with films created from gold microparticles. These particles in the form of microplates or polyhedral microcrystals were deposited on titanium plates from ethanol solutions, dried and annealed with a hydrogen flame. Some samples were additionally modified by polyethylene imine. The materials engendered from these modifications were used to investigate the adhesion and growth of human osteoblast-like MG-63 cells on these surfaces in the DMEM medium with 10% of fetal bovine serum. One day after seeding, the highest number of initially adhered cells was found on the surfaces modified by both types of gold microparticles. This trend was the same three and seven days after seeding. The numbers of cells on pure Ti and Ti modified only with gold particles were significantly higher than on samples which were modified with polyethylene imine. The cell spreading areas projected on the materials were significantly larger in cells on the samples with polyethylene imine modification. However, the shape of these cells was mostly rounded or star-like with thin and long protrusions, while on the materials without polyethylene imine, it was mostly polygonal. The cell proliferation activity was estimated from XTT test, based on the activity of mitochondrial enzymes. This test showed that the proliferation activities of osteoblast-like MG-63 cells of the 3rd and 7th days of the experiment were more pronounced on the samples modified only by gold microparticles. Immunofluorescence showed that the focal adhesion plaques containing vinculin and the fibers containing β-actin were most apparent, more numerous and more brightly stained in cells on Ti modified by gold microplates and gold polyhedral microcrystals, especially in comparison with the corresponding samples modified with polyethylene imine (Fig. 1). Thus, it can be concluded that the modification of titanium samples by both types of gold microparticles enhanced the adhesion and growth of MG 63 cells.
    Źródło:
    Engineering of Biomaterials; 2013, 16, no. 122-123 spec. iss.; 77
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Remarks on qualification of patients for cochlear implantation
    Autorzy:
    Karlik, Michał
    Wiskirska-Woźnica, Bożena
    Sekula, Alicja
    Powiązania:
    https://bibliotekanauki.pl/articles/1401760.pdf
    Data publikacji:
    2016
    Wydawca:
    Index Copernicus International
    Tematy:
    cochlear implants
    deafness
    profound sensorineural hearing loss
    surgical treatment
    qualification to cochlear implant
    Opis:
    Over thirty years of progress in development of surgical techniques and cochlear implant technology led to a change in approach and extending of indications for qualifying patients to treatment of sensorineural hearing loss. Basic indications for cochlear implants include bilateral deafness, bilateral residual hearing or profound bilat-eral sensorineural hearing impairment as well as lack of acoustic gain from classic air conduction hearing aids af-ter a minimum of 5-6 months of use. Methods of subjective and objective hearing assessment are applied. Psycho-logical evaluation is aimed at assessing expectations of the patient/child’s parents, motivation, and intellect with regard to the presence of deficits that might pose difficulty in the course of further rehabilitation as well as accep-tance of this new type of stimulation. Speech and language evaluation takes into consideration the current level of speech development, articulation disorders related to hearing impairment, and the way to communicate with the environment. Final qualification requires imaging diagnostics of the head/ears (CT and/or MRI). Our surgi-cal experience allowed for implanting children with various congenital anomalies of the inner ear. Inflammation within the tympanic cavity and air-filled spaces of the mastoid process might require removal of inflammatory foci prior to surgery or selection of different surgical approach.
    Źródło:
    Polski Przegląd Otorynolaryngologiczny; 2016, 5, 1; 18-21
    2084-5308
    2300-7338
    Pojawia się w:
    Polski Przegląd Otorynolaryngologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The adhesion and growth of vascular smooth muscle cells in cultures on carboranethiol-modified gold films
    Autorzy:
    Parizek, M.
    Base, T.
    Londesborough, M. G. S.
    Lisa, V.
    Bacakova, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/285409.pdf
    Data publikacji:
    2008
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    metal coating
    gold film
    carboranethiol
    cell adhesion
    cell spreading
    cell proliferation
    biomaterials
    tissue engineering
    surgical implants
    Opis:
    Metal surfaces have become important over the last decade for potential surgical implants, and within this context we present here a study of the cell growth on modified gold surfaces. Gold films, deposited on glass plates and annealed with a hydrogen flame, were modified with four different carboranethiol derivatives: 1-(HS)-1,2-C2B10H11 (A), 1,2-(HS)2-1,2-C2B10H10 (B), 9,12-(HS)2-1,2-C2B10H10 (C) and 1,12-(HS)2-1,12- C2B10H10 (D). The materials engendered from these modifications were used to investigate the adhesion and growth of rat aortic smooth muscle cells cultured on these surfaces in a DMEM medium with 10% of fetal bovine serum. One day after seeding, the highest number of initially adhered cells was found on the surface of a bare gold film. However, three days after seeding, the number of cells on carboranethiol-modified gold samples B, C and D was significantly higher than the number on a bare gold film. After seven days, the number of cells on a bare gold film and on gold films modified with derivatives A, B and D was very similar, but the surface of a gold film modified with derivative C exhibited a significantly smaller number of cells. This may be explained by the exposure of the CH vertices of the carborane cluster, which are more acidic than the BH vertices exposed toward the cells in either A or B.
    Źródło:
    Engineering of Biomaterials; 2008, 11, no. 81-84; 117-119
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The adhesion and growth of vascular smooth muscle cells in cultures on carboranethiol-modified gold films
    Autorzy:
    Parizek, M.
    Base, T.
    Londesborough, M. G. S.
    Lisa, V.
    Bacakova, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/286249.pdf
    Data publikacji:
    2008
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    implanty chirurgiczne
    biomateriały
    powłoki metalowe
    inżynieria materiałowa
    metal coatings
    gold film
    carboranethiol
    cell adhesion
    cell spreading
    cell proliferation
    biomaterials
    tissue engineering
    surgical implants
    Opis:
    Metal surfaces have become important over the last decade for potential surgical implants, and within this context we present here a study of the cell growth on modified gold surfaces. Gold films, deposited on glass plates and annealed with a hydrogen flame, were modified with four different carboranethiol derivatives: 1-(HS)-1,2-C2 B10H11(A), 1,2-(HS)2-1,2-C2B10H10(B), 9,12-(HS)2-1,2-C2B10H10(C) and 1,12-(HS)2-1,12- C2B10H10(D). The materials engendered from these modifications were used to investigate the adhesion and growth of rat aortic smooth muscle cells cultured on these surfaces in a DMEM medium with 10% of fetal bovine serum. One day after seeding, the highest number of initially adhered cells was found on the surface of a bare gold film. However, three days after seeding, the number of cells on carboranethiol-modified gold samples B, C and D was significantly higher than the number on a bare gold film. After seven days, the number of cells on a bare gold film and on gold films modified with derivatives A, B and D was very similar, but the surface of a gold film modified with derivative C exhibited a significantly smaller number of cells. This may be explained by the exposure of the CH vertices of the carborane cluster, which are more acidic than the BH vertices exposed toward the cells in either A or B.
    Źródło:
    Engineering of Biomaterials; 2008, 11, 75; 6-8
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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