Results 201 to 210 of about 97,111 (245)

Permeability of demineralized dentin to HEMA

Dental Materials, 2000
The objectives of this study were to develop a macromodel of the demineralized layer of dentin that is formed after acid-etching, and to determine if the amount of HEMA uptake was responsive to air drying. The hypothesis that was tested was that HEMA uptake by demineralized dentin depends upon the degree of expansion of the collagen fibril network ...
D H, Pashley, Y, Zhang, K A, Agee, C J, Rouse, R M, Carvalho, C M, Russell   +5 more
openaire   +2 more sources

Methods for Microencapsulation with HEMA-MMA

2003
Encapsulation of cells in a membrane prior to implantation holds potential for controlling the adverse immune response that may be generated against the transplanted cells, by physically isolating the cells from the host's immune system. If successful, encapsulation eliminates or minimizes the adverse effects of immunosuppressive therapy and permits ...
S, Lahooti, M V, Sefton
openaire   +2 more sources

HEMA İÇEREN VE HEMA İÇERMEYEN ADEZİVLERİN DENTİNE ADEZYONU

2017
Amaç: Bu çalışmanın amacı HEMA içeren self etch adezivlerindentin yüzeyine bağlanma dayanımının, HEMA içermeyen bir adezivlekıyaslanmasıdır. Gereç ve yöntem:  Çalışmamızda 24adet çekilmiş insan üst kesici dişi kullanıldı. Dişler mine sement sınırıhizasından kesilerek kök kısımları uzaklaştırıldı.
NACAK, Selin, YAPAR, Merve İşcan, İLDAY, Nurcan Özakar, SEVEN, Nilgün   +3 more
openaire   +3 more sources

Influence of free chains on the swelling pressure of PEG-HEMA and dex-HEMA hydrogels

International Journal of Pharmaceutics, 2007
Insight in the osmotic behavior of degrading hydrogels is of great importance in the design of biodegradable hydrogels for biomedical applications. This study compares the degradation behavior of PEG-HEMA (hydroxyethylmethacrylated polyethylene glycol) and dex-HEMA (hydroxyethylmethacrylated dextran) hydrogels.
T G, Van Thienen, F, Horkay, K, Braeckmans, B G, Stubbe, J, Demeester, S C, De Smedt   +5 more
openaire   +2 more sources

Bacterial adhesion to poly(HEMA)‐based hydrogels

Journal of Biomedical Materials Research, 1993
AbstractThe effects of water content and comonomer chemistry upon the adhesion of Pseudomonas aeruginosa to poly(hydroxyethyl methacrylate)‐based hydrogels were studied. Hydrogels which varied in swollen water content from 33–69 wt% were polymerized onto glass microscope slides pretreated with a vinyl silane.
A D, Cook, R D, Sagers, W G, Pitt
openaire   +2 more sources

Structural alterations of p(HEMA)-collagen implants

Biomaterials, 1991
Samples of linear (additionally crosslinked) p(HEMA) with different amounts of fibrillar collagen were implanted into the popliteal region of rats. After 3 month, the implanted materials were harvested and examined by SEM. The implants underwent marked structural or morphological changes.
M, Stol, I, Cífková, V, Tyrácková, M, Adam   +3 more
openaire   +2 more sources

Silica-filled poly(HEMA) from hema/grafted SiO2 nanoparticles: Polymerization kinetics and rheological changes

Journal of Applied Polymer Science, 1999
The chemio-rheological behavior during the radical polymerization of the HEMA/grafted silica nanoparticles was found to be very dependent on the weight fraction of the silica particles. In the case of the neat HEMA reactive system, the macrogelation occurs at the same time as the Trommosdorf effect.
H. Kaddami, J. F. Gerard, P. Hajji, J. P. Pascault   +3 more
openaire   +1 more source

Effect of HEMA on bonding to dentin

Dental Materials, 1992
The present study investigated the effectiveness of treating dentin with 2-hydroxyethyl methacrylate (HEMA) prior to application of an adhesive resin. The adhesive resin was 5% 4-methacryloxyethyl trimellitate anhydride (4-META) in methyl methacrylate (MMA) combined with poly-MMA powder. Polymerization of this resin was initiated by tri-n-butyl borane (
N, Nakabayashi, K, Takarada
openaire   +2 more sources

Verbascum hema-figranum Hemaid

Published as part of Alzahrani, Ali Mohammed, Brehm, Joana Magos, Ghazanfar, Shahina A. & Maxted, Nigel, 2024, DNA barcoding of the genus Verbascum (Scrophulariaceae) in the Arabian Peninsula, pp.
Alzahrani, Ali Mohammed, Brehm, Joana Magos, Ghazanfar, Shahina A., Maxted, Nigel   +3 more
openaire   +1 more source

Poly-Hema Sponge: A Biocompatible Calcification Implant

Biomaterials, Medical Devices, and Artificial Organs, 1979
Poly-hydroxyethyl methacrylate (Poly-HEMA) was investigated for biocompatibility and calcification potential. S.C. and I.M. implants and transplants to subperiosteal sites were examined. The material was judged to be tolerated by the host tissue since no inflammatory or degenerative changes were observed.
J H, Kronman, R E, Green, M, Goldman, B, Hauschka   +3 more
openaire   +2 more sources