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  • 1
    Electronic Resource
    Electronic Resource
    Effect of occlusion on human skin (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 33 (1995), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In order to investigate the el led of occlusion on the skin, the flexor sides of both upper arms were covered with column-shaped closed chambers, 30 mm in outer diameter. 20 mm in inner diameter. and 5 mm in height, which were made of polyethylene loam. The tops of the chambers were sealed be plastic films with various levels of water vapor permeability to control moisture in each chamber. The raised chamber walls prevented direct contact between the skin and the plastic film. After 24 h of application, morphological changes of the skin surface were observed microscopically by the nitrocellulose-replica method. Although no visual alterations were found on all areas of occluded skin, microscopic evaluation showed that simple occlusion by films induced an increase in the number of deepened skin furrows on the skin surface. This increase was associated with lower water vapor permeability of the films, as well as with higher values of both temperature and humidity on the test day. Thus, since conditions which facilitate perspiration from the skin lend to cause skin irritation, prolonged exposure of the skin to sweat by simple occlusion may act as a primary skin irritant
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0536.1995.tb00472.x
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of three-liquid bonding agents on bond strength to a machine milled ceramic material (1999)
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 26 (1999), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: This study determined the bond strengths of porcelain bonding systems joined to a ceramic material, with the aim of evaluating the effect of a catalyst for silane coupling as well as that of initiators for bonding agents. Two sizes of specimen were cut from ceramic blocks (Cerec 2 Vitablocs Mark II®) and then primed with either a three-liquid self-curing bonding agent (Clearfil Porcelain Bond®, CPB), a three-liquid dual-activated bonding agent (Clapearl Bonding Agent®, CBA), or their components. Unprimed specimens were also used as controls. After conditioning, the two different sized plates were bonded together with a dual-cured luting agent (Clapearl DC®). The specimens were stored in 37 °C water for 24 h and shear bond strengths were determined. Shear testing revealed that the greatest bond strength was generated in the group consisting of ceramic material primed with CBA and exposed for 20 s prior to luting. Bond strengths of the CPB-primed group and the CBA-primed group without pre-exposure were comparable, whereas the remaining groups resulted in significantly lower bond strengths than the other three groups. The priming effect was greatly enhanced when a catalyst was used with the silane coupler as compared with the application of silane alone. The results suggest that incorporation of an initiator and a catalyst for silane coupling into the bonding agent reciprocally enhances bonding between the luting agent and the ceramic material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2842.1999.00423.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Depth of cure of prosthetic composite materials polymerized with laboratory and handheld photo-curing units (1999)
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 26 (1999), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: This study examined depth of cure of two prosthetic composite materials (Artglass® and Dentacolor®) polymerized by means of four photo-curing units for the purpose of comparing the curing performance of laboratory and handheld curing units. Each composite material was photo-exposed either with one of two laboratory photo-curing units (Dentacolor XS® and UniXS®) or with one of two handheld photo-curing units (Translux CL® and Translux EC®). The light sources were differently shaped xenon stroboscopic lamps for the laboratory units, and halogen lamps of differing intensity for the handheld units. Exposure periods were 20, 30, 60, and 90 s, and depth of cure of the materials was determined with a scraping technique. The two handheld curing units generated significantly greater depth of cure for both materials than either of the two laboratory curing units. Of the two laboratory units, the Dentacolor XS® unit produced somewhat greater depth of cure for all combinations than the UniXS® unit, whereas the differences in depth of cure of the two materials exposed with the two handheld units were not significant when the exposure time period was 60 s or more. The Dentacolor® composite generally demonstrated greater depth of cure than the Artglass® composite under identical curing conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2842.1999.00445.x
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  • 4
    Electronic Resource
    Electronic Resource
    Curing depth of prosthetic composite materials polymerized with their proprietary photo-curing units (1999)
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 26 (1999), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: This study examined curing depth of eight prosthetic composite materials polymerized by means of six photo-curing units for the purpose of evaluating the curing performance of material-curing unit combinations. Each composite material was exposed with a photo-curing unit recommended by the manufacturer. The light sources of the units were halogen/fluorescent, xenon, metal halide, fluorescent, and halogen lamps, and exposure periods were 20, 30, 60, and 90 s. Curing depth of the materials was determined according to the method described by the International Organization for Standardization (ISO 4049). The results were analysed by factorial analysis of variance ( anova) and multiple comparison intervals. Two-factor anova revealed that the depth of cure was influenced both by the material-unit combination and by the exposure period (P=0·0001). Among the eight combinations, a hybrid composite material (Prywood color®) polymerized with a metal halide curing unit (Hyper LII®) exhibited the greatest depth of cure after 90-s exposure. For all combinations, longer exposure increased the depth of cure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2842.1999.00408.x
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  • 5
    Electronic Resource
    Electronic Resource
    Bonding of titanium with acidic primers and a tri-n-butylborane-initiated luting agent (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 24 (1997), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: summary Adhesive bonding of titanium was investigated with the use of five primers and two luting agents. All of the primers contained acidic methacrylate monomers for promotion of metal bonding. Titanium metal specimens were bonded with seven combinations of five primers and two luting agents. Durability of the bond was evaluated by means of thermocycling. Although all five primers enhanced the bond strength to titanium, three of the primers (Super-Bond Liquid, Metal Primer and Tokuso Rebase MR. Bond) demonstrated more durable bonds than the other two primers (Acryl Bond and All-Bond 2 Primer B). The tri-n-butylborane (TBB)-initiated luting agent exhibited better bonding ability as compared to conventional composite resin. The strongest and the most consistent bond was achieved by the combination of 4-methacryloyloxyethyl trimellitate anhydride (4-META) primer and TBB resin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1997.tb00344.x
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  • 6
    Electronic Resource
    Electronic Resource
    Bonding of silver-palladium-copper-gold alloy with thiol derivative primers and tri-n-butylborane initiated luting agents (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 24 (1997), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: summary This in vitro study evaluated the effect of two primers on bond strengths and durability of luting agents joined to a silver-palladium-copper-gold alloy. One primer (Metal Primer) contained methacryloyloxyalkyl thiophosphate derivative (MEPS). The other primer (V-Primer) contained 6-(4-vinylbenzyI-n-propyl)aniino-l,3,5-triazine-2,4-dithiol (VTD). The luting agent was a methyl methacrylate (MMA)-based adhesive resin that contained 4-methacryloyloxyethyl trimellitate anhydride (4-META) and was initiated with tri-n-butylborane derivative (TBB). In order to evaluate the function of 4-META, MMA-TBB resin without 4-META was used as a control. The alloy specimens were bonded with six combinations of two primers and two luting agents. Shear bond strengths were determined before and after thermocycling. Both primers significantly elevated the bond strengths of the luting agents joined to the alloy. For unprimed groups, 4-META resin showed a more durable bond than did MMA-TBB resin. Combined use of Metal Primer with 4-META resin reduced the bond strength, while combination of V-Primer and 4-META resin did not affect the bond strength.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1997.tb00329.x
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  • 7
    Electronic Resource
    Electronic Resource
    Bonding of a mica-based castable ceramic material with a tri-n-butylborane-initiated adhesive resin (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 23 (1996), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: SUMMARY Adhesive bonding of a mica-based castable ceramic material (Olympus Castable Ceramics, OCC) was evaluated in vitro with the use of a silane primer in conjunction with an adhesive luting material. The primer contained a silane coupler and 4-methacryloxyethyl trimellitate anhydride (4-META), while the methyl methacrylate (MMA)-based luting agent was initiated with a tri-n-butylborane derivative (TBB) and contained 4-META (4-META/MMA-TBB resin). Ceramic specimens were sanded with No. 600 silicon carbide paper followed by blasting with alumina and/or etching with ammonium bifluoride. The specimens were bonded with various combinations and shear bond strengths were determined. Both priming and alumina blasting enhanced the bond between 4-META resin and OCC. Although etching with ammonium bifluoride roughened the ceramic surface, this procedure did not improve the bond strength. Electron probe microanalysis of the ceramic surface revealed a decrease in silicon and aluminium elements after etching with ammonium bifluoride.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1996.tb00878.x
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Adhesive bonding of titanium with a methacrylate–phosphate primer and self-curing adhesive resins (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 22 (1995), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: SUMMARY The adhesive bonding of titanium was evaluated with the use of a metal primer and three types of self curing luting agent. The primer contained 10-methacryloyloxydecyl dihydrogen phosphate (MDP). One luting agent was a composite material that contained the MDP monomer in its liquid part. The other luting agent was based on methyl methacrylate (MMA), initiated with tri-n-butylborane derivative (TBB), and contained 4-methacryloyloxyethyl trimellitate anhydride (4-META). The MMA-TBB resin without 4-META was used for the control. Pure titanium metal specimens were bonded with various combinations. Shear bond strengths were determined after repeated thermocycles in water. Both MDP and 4-META were effective in bonding titanium. The decrease in bond strength was minimum when the titanium was primed with MDP and then bonded with the TBB-initiated resins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1995.tb00793.x
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Adhesive bonding of noble metal alloys with a triazine dithiol derivative primer and an adhesive resin (1999)
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 26 (1999), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The purpose of this study was to evaluate the bond strength and durability of a metal adhesive system bonded to noble metal alloys. Disc specimens were cast from type IV gold (type IV, Casting Gold M.C.®), metal–ceramic gold (Au–Pt–Pd, Degudent Universal®), metal–ceramic palladium (Pd–Ga–Co, PTM 88®), silver–indium (Ag–In–Zn, Salivan Hard®) and silver–palladium–copper–gold (Ag–Pd–Cu, S12®) alloys and pure silver (pure Ag). The specimens were air-abraded with 50 μm alumina, conditioned with a thiol-based primer designed for noble alloys (V-Primer®), and then bonded with an adhesive resin (Super-Bond Opaque Ivory®). Shear bond strengths were determined after repeated thermocycling (4–60 °C, 1 min each, 100 000 cycles). The average bond strengths in MPa (n=8) were 30·9 for the type IV alloy, 29·0 for the Ag–Pd–Cu alloy, 28·0 for the Au–Pt–Pd alloy, 26·3 for the pure Ag, 26·0 for the Pd–Ga–Co alloy and 9·3 for the Ag–In–Zn alloy. The Ag–In–Zn alloy exhibited significantly lower bond strength than the other alloys, whereas the bond strengths of the other four alloys and pure Ag were comparable (P〈0·05). It is concluded that the combined use of the thiol derivative primer and the adhesive resin is effective for bonding the noble metal alloys examined, with the exception of the Ag–In–Zn alloy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2842.1999.00462.x
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Rathke's cleft cyst with pituitary apoplexy: case report (1999)
    Springer
    Neuroradiology 41 (1999), S. 832-834 
    Details
    ISSN: 1432-1920
    Keywords: Key words Pituitary tumor ; Cyst Rathke's cleft ; Pituitary apoplexy ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a Rathke's cleft cyst which presented as pituitary apoplexy, a rare presentation. A 46-year-old woman suffered sudden headache and visual loss. T1-weighted MRI 3 weeks after this apoplectic episode demonstrated a cystic lesion between the anterior and posterior lobes of the pituitary, with some high-signal material layering in it. The mass showed spontaneous regression on an image 3 weeks later. Trans-sphenoidal surgery confirmed the diagnosis of a Rathke's cleft cyst with a haematoma within it.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050851
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    Paper (German National Licenses)
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