Improved cell adhesion to ion beam-irradiated polymer surfaces

Pignataro, Bruno; Conte, Enrico; Scandurra, Antonino; Marletta, Giovanni

doi:10.1016/s0142-9612(97)00090-2

Cited by 95 publications

(65 citation statements)

References 20 publications

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“…However, when radiation and aging were associated, an increasing biofilm growth was verified. This phenomenon may be a possible competition between cross-linking and crossbreaking processes in chemical chains of the material (17)(18)(19)(20), which can result in degradation of the material.…”

Section: Discussionmentioning

confidence: 99%

“…The use of the ionizing radiation to improve dental materials was previously studied (9,17,18). However, the radiation doses used in these cases are much higher Figure 1.…”

Section: Discussionmentioning

confidence: 99%

“…The absorption process of radiation by the dental resin composite promotes the excitation and the ionization in its organic matrixes and creates reactive molecules (17)(18)(19)(20). These coupled reactive molecules (7,17) inside the matrix are the initial chemical reagents starting the cure process.…”

Section: Discussionmentioning

confidence: 99%

“…There are many radiation sources: high-energy electrons, gamma radiation, ultraviolet (UV) and visible light, which are used to manipulate chemical structures of materials in order to improve their biocompatibility (17,18). These reactions are efficient and fast.…”

Section: Discussionmentioning

confidence: 99%

“…The AG discs were placed into a box with relative humidity of 50% (±5), illuminated by a mercury light HN ZN 15W (Huaning Corp, Nanjing, China; 253.7 nm, 15 W), for 48 h, resulting in 1157.76 J/cm 2 , to induce aging, according to previous studies (18)(19)(20). The NAG discs were stored at 37°C (±1), without light and 95% (±5) of relative humidity for the same time.…”

Section: Restorative Materials Disc and Irradiationmentioning

confidence: 99%

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Oral streptococci growth on aging and non-aging esthetic restorations after radiotherapy

et al. 2010

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The aim of this study was to examine Streptococcus mutans biofilm growth on both aged and non-aged restorative dental resins, which were submitted to therapeutic irradiation. Sixty-four disks of an esthetic restorative material (Filtek Supreme) were divided into 2 groups: aged group (AG) and a non-aged group (NAG). Each group was subdivided into 4 subgroups: non-irradiated and irradiated with 10Gy, 35Gy, and 70Gy. The biofilms were produced by Streptococcus mutans UA159 growing on both AG and NAG surfaces. The colony-forming units per mL (CFU/mL) were evaluated by the ANOVA and the Tukey LSD tests (α=0.05). AG presented smaller amounts of CFU/mL than the NAG before irradiation and after 10Gy of irradiation (p<0.05). AG irradiated with 35 and 70Gy showed increased amount of bacterial biofilm when compared to non-irradiated and 10Gy-irradiated disks (p<0.05). The exposure to ionizing radiation at therapeutic doses promoted changes in bacterial adherence of aged dental restorative material.

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Section: Discussionmentioning

confidence: 99%

“…The use of the ionizing radiation to improve dental materials was previously studied (9,17,18). However, the radiation doses used in these cases are much higher Figure 1.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Restorative Materials Disc and Irradiationmentioning

confidence: 99%

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Oral streptococci growth on aging and non-aging esthetic restorations after radiotherapy

et al. 2010

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Fluorine ion-implanted polystyrene improves growth and viability of vascular smooth muscle cells in culture

Bačáková

Mareš

Bottone

et al. 2000

J. Biomed. Mater. Res.

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Vascular smooth muscle cells derived from the rat aorta were cultured on unmodified or F(+) ion-implanted polystyrene (5 x 10(12) or 5 x 10(14) ions/cm(2), energy 150 keV). In 1-day-old cultures, the cells adhered to the modified polystyrene in higher numbers and over larger contact areas. Increased resistance of the cells to trypsin-mediated detachment from the growth support indicated an improved adhesion of cells to the modified polymer at later culture intervals. The cells cultured on ion-modified polymers also were larger and had a higher total protein content. By use of immunocytochemistry, several specific protein species were increased, including the cytoskeletal alpha-actin and vimentin and the plasma membrane-associated vinculin, talin, alpha-v integrins, ICAM-1, and VCAM-1, which account for stronger cell-cell and cell-extracellular matrix adhesion. The lower number of cells found floating in the medium suggests that the spontaneous detachment of cells from the modified polystyrene was lower and that the viability of the adhered cell population was higher. As was shown by the two-parameter flow-cytometric measurements of BrdU incorporation and DNA content, as well as by (3)H-thymidine autoradiography, the cell proliferation on samples modified by the dose of 5 x 10(12) ions/cm(2) was similar to that in controls; and at the dose of 5 x 10(14) ions/cm(2), it tended to be even lower. The cells grown on the polymer implanted with the dose of 5 x 10(12) ions/cm(2) responded to a new artificially created cell-free area in a confluent cell layer by more intense migration whereas at the dose of 5 x 10(14) ions/cm(2), the migration ability of cells was similar to that on the unmodified polymer. The data revealed a higher biocompatibility of ion-implanted polystyrene with vascular smooth muscle cells in culture. There was better adhesion, differentiation, and survival, and there was neither excessive migration nor proliferation.

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Nanoengineering of Biomaterial Surfaces

Jayagopal

Shastri

2003

Nanotechnologies for the Life Sciences

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The sections in this article are Introduction Conventional Photolithography Electron‐Beam Lithography Soft Lithography Polymer‐Demixed Nanotopographies Star‐Shaped and other Novel Polymer Structures Vapor Deposition Self‐Assembly Particle Blasting Ion Beam and Plasma‐Guided Surface Engineering Sol–Gel Technology Nanolithography Laser‐Guided Strategies Rapid Prototyping Techniques Conclusions Acknowledgments

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Improved cell adhesion to ion beam-irradiated polymer surfaces

Cited by 95 publications

References 20 publications

Oral streptococci growth on aging and non-aging esthetic restorations after radiotherapy

Oral streptococci growth on aging and non-aging esthetic restorations after radiotherapy

Fluorine ion-implanted polystyrene improves growth and viability of vascular smooth muscle cells in culture

Nanoengineering of Biomaterial Surfaces

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