821 research outputs found
sj-docx-1-jdr-10.1177_00220345221103137 – Supplemental material for Retention of Intrafibrillar Minerals Improves Resin–Dentin Bond Durability
No full textSupplemental material, sj-docx-1-jdr-10.1177_00220345221103137 for Retention of Intrafibrillar Minerals Improves Resin–Dentin Bond Durability by T. Shan, L. Huang, F.R. Tay and L. Gu in Journal of Dental Research</p
F.R. TOMLINSON: MENS EN WETENSKAPLIKE
No full textThe 1996 F.R. Tomlinson Memorial Lecture was delivered on 23rd May 1996 in Bloemfontein. The author, Prof D.J.G. Smith, chose the subject : F.R. Tomlinson: Man and ScientistTeaching/Communication/Extension/Profession,
F.R. Falconer's House
No full textPhotograph - A man in the backyard of F.R. Falconer's house, Athabasca, Alberta. Across the lane is the nurse's residence, later owned by Mrs. Dan Bilid
DS_10.1177_0022034518805419 – Supplemental material for Chitosan-Based Extrafibrillar Demineralization for Dentin Bonding
No full textSupplemental material, DS_10.1177_0022034518805419 for Chitosan-Based Extrafibrillar Demineralization for Dentin Bonding by L.S. Gu, X. Cai, J.M. Guo, D.H. Pashley, L. Breschi, H.H.K. Xu, X.Y. Wang, F.R. Tay and L.N. Niu in Journal of Dental Research</p
DS_10.1177_0022034519831931 – Supplemental material for MMP-8-Responsive Polyethylene Glycol Hydrogel for Intraoral Drug Delivery
No full textSupplemental material, DS_10.1177_0022034519831931 for MMP-8-Responsive Polyethylene Glycol Hydrogel for Intraoral Drug Delivery by J. Guo, H. Sun, W. Lei, Y. Tang, S. Hong, H. Yang, F.R. Tay and C. Huang in Journal of Dental Research</p
DS_10.1177_0022034520913540 – Supplemental material for Evaluation of a Collagen-Reactive Monomer with Advanced Bonding Durability
No full textSupplemental material, DS_10.1177_0022034520913540 for Evaluation of a Collagen-Reactive Monomer with Advanced Bonding Durability by F. Yu, M.L. Luo, R.C. Xu, L. Huang, W. Zhou, J. Li, F.R. Tay, L.N. Niu and J.H. Chen in Journal of Dental Research</p
sj-docx-1-jdr-10.1177_00220345231199416 – Supplemental material for Enhanced Bonding to Caries-Affected Dentin Using an Isocyanate-Based Primer
No full textSupplemental material, sj-docx-1-jdr-10.1177_00220345231199416 for Enhanced Bonding to Caries-Affected Dentin Using an Isocyanate-Based Primer by K. Tang, F. Wang, S.Q. Dai, Z.Y. Yang, L.Y. Duan, M.L. Luo, F.R. Tay, L.N. Niu, W. Zhou and J.H. Chen in Journal of Dental Research</p
Forms of judaism in writings of F.R. Kraus, František Kafka, Hana Bělohradská and J.R. Pick
No full textTéma této práce zní Podoby židovství v dílech F.R. Krause, Františka Kafky, Hany Bělohradské a J.R. Picka. Soustředila jsem se na méně známé české autory, kteří se ve své tvorbě věnovali tématu židovství. Jedná se o texty související s 2. světovou válkou. V úvodu je nastíněn stručný přehled o působení Židů na našem území, následuje představení zvolené čtveřice autorů. Hlavním cílem bylo přiblížit a rozebrat vybraná díla a v závěru shrnout jejich odlišné a podobné znaky. Současně byly tyto texty zařazeny do kontextu české prózy s tematikou okupace.Katedra českého jazyka a literaturyObhájenoThe theme of this bachelor work is called Forms of judaism in writings of F.R. Kraus, František Kafka, Hana Bělohradská and J.R. Pick. In this thesis the author tried to concentrate on a few less-known Czech writers, who devoted their writing to the fate of Jews during the Second World War. In the first part of this work the author outlined the influence of the Jewish etnic group on the population of our country, with the aim to gain orientation in the historical backgound of that time. Next the author analysed the texts of selected books with the Jewish theme from different points of view and in the end of her work compared the books she used. In the closing of this work there is a contextual classification of the mentioned books into the category of works with the topic of occupation, from the end of the Second World War until today
Guided Tissue Remineralization of Resin-Bonded Acid-Etched Dentin
No full textContemporary biomineralization strategies incorporate non-classical crystallization pathways of fluidic amorphous nanoprecursors and mesoscopic transformation. Using two functional biomimetic molecules, we previously regenerated mineralized dentin from acid-etched dentin using the Guided Tissue Remineralization (GTR) approach, with definitive intrafibrillar remineralization of type-I collagen. Degradation of denuded collagen within dentin adhesive resin-infiltrated dentin is a pertinent problem in dentin bonding. Here, we show that GTR provides a means of salvaging these degrading bonds by remineralizing resin-dentin interfaces. The GTR medium consists of a Portland cement/simulated body fluid that includes polyacrylic acid and polyvinylphosphonic acid biomimetic analogs for amorphous calcium phosphate dimension regulation and collagen targeting. Both interfibrillar and intrafibrillar apatites became readily discernible within the adhesive-bonded dentin after 2-4 months. Amorphous nanoprecursors created by GTR also penetrated the adhesive resin matrix to create nanocomposites. We anticipate GTR to be the starting point for more sophisticated strategies in extending the longevity of resin-dentin bonds
Early in vitro mutans streptococci colonization on different experimental resins
No full textObjectives: The aim of this study was to evaluate surface colonization by mutans streptococci (Ms) of five light-curing experimental resins with increasing hydrophilicity. The tested hypothesis was that adhesive hydrophilicity does not affect bacteria colonization.
Materials and methods: Five light-curing versions of neat experimental resin blends with increasing hydrophobicity were investigated (R1, R2, R3, R4 and R5). R1 and R2 contained ethoxylate or BisGMA/TEGDMA, respectively, and were very hydrophobic, similarly to pit-and-fissure sealants. R3was representative of a typical two-step etch-and-rinse adhesive, while R4 and R5 were similar to self-etching very hydrophilic resins containing carboxylic or phosphoric acid methacrylates, respectively. 13 disks (6.4mmdiameter and 1.5mmthick)were obtained for each of the formulations and polymerized with a lightcuring unit (Spectrum 800, DENTSPLY) for 80 s at 800mW/cm2.
Disks were finished using silicon carbide paper and stored in PBS for 72 h to allow leaching of unreacted monomers. Specimens were then sterilized and a 48-h incubation Ms monospecific biofilm was obtained on disk surfaces. The amount of viable biomass adherent to the surface of each disk was determined using a colorimetric technique (MTT assay) and spectrophotometric analysis by optical density (OP).
Results: R1 group showed the lowest OP values for bacterial colonization while R4 and R5 demonstrated the highest ones (ANOVA, p < 0.0001). An increasing trend of Ms colonization from R1 to R5, as resin hydrophobicity increases, was found.
Resin type Mutans streptococci
R1 1.085 ± 21.4a
R2 1.660 ± 36.7b
R3 1.664 ± 42.8b
R4 1.929 ± 19.4c
R5 1.932 ± 20.6c
Different superscript letters indicate statistical differences (p < 0.05).
Conclusions: The tested hypothesis was rejected since Ms surface colonization was influenced by hydrophilicity of the experimental resins. Lower hydrophilicity corresponded to lower Ms surface colonization. Further studies should confirm the ability of Ms to colonize resin surfaces in vivo
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