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  • 1
    Electronic Resource
    Electronic Resource
    Spectrographic Analysis of 18-8 Stainless Steel (1953)
    s.l. : American Chemical Society
    Analytical chemistry 25 (1953), S. 1031-1034 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60079a010
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Spectrographic Determination of Impurities in Zirconium and Hafnium (1953)
    s.l. : American Chemical Society
    Analytical chemistry 25 (1953), S. 1605-1608 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60083a008
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Metal-promoted nucleophilic addition of water to coordinated 2,3-bis(2-pyridyl)benzoquinoxaline in rhenium(V) complexes. Crystal structure of the hydration product ReOCl2(C22H15N4O) (1994)
    s.l. : American Chemical Society
    Inorganic chemistry 33 (1994), S. 178-179 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00079a032
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The Hair Cell as a Presynaptic Terminal (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 635 (1991), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1991.tb36494.x
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  • 5
    Electronic Resource
    Electronic Resource
    Role of periodontal ligament receptors in the tactile function of teeth: a review (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 29 (1994), S. 0 
    Details
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The tactile function of the human periodontal mechanoreceptors has mostly been studied by psychophysical approaches. It was concluded that periodontal mechanoreceptors play a major role in the tactile function of teeth. It must be noted however that the interocclusal tactile threshold is not solely determined by periodontal mechanoreceptors but also by pulpal, muscular or articular receptors. While temporomandibular joint receptors play a minor role, muscular receptors are important in the discriminatory ability for a mouth opening of 5 mm and more. To discriminate between the contribution of periodontal and other receptors in the oral tactile function, future studies should use appropriate psychophysical methodologies and well-defined stimulus parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0765.1994.tb01208.x
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  • 6
    Electronic Resource
    Electronic Resource
    Influence of temperature and foil hardness on interocclusal tactile threshold (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 27 (1992), S. 0 
    Details
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Determinations of interocclusal tactile threshold levels so far have involved neither appropriate psychophysical approaches nor an assessment of the mechanical and thermal properties of the foils used. Twenty subjects (12 females) aged 18 to 50 (mean age 35) were tested for their absolute threshold level (RL). Both the method of limits and the staircase method were applied to determine the active or passive RL. For the active RL assessment, foils of different thicknesses were placed between edge-to-edge opposed incisors during gentle biting. Inner ear receptors of the blindfolded subjects were blocked by broad band noise applied through earphones, because vibrations induced by occlusal contact and conducted through bone might be perceived by these receptors. The foils presented were aluminum (Al), tin (Sn), polyester (PE) and calibrated steel (St) (thickness ranging from 8 to 50 μm) which offer different physical and thermal properties. The range of RL of the group varied between 8 μm for aluminum to 46 μm for polyester for 50% correct assessments. Increasing the foil temperature from room temperature (20°C) to body temperature (35°C) significantly increased the RL for conducting materials (one-way blocked ANOVA). These results indicate that temperature exchange takes place while presenting conducting foils at 20°C (cold stimulus) interocclusally, which influences the RL by activating thermosensitive receptors. The passive RL determination with classical von Frey-hairs resulted in a mean axial RL of 3.0 g. Both psychophysical RL assessments (method of limits, staircase method) gave reproducible and similar results as ascertained by ANOVA. Furthermore, a positive correlation was established between active and passive RL (Pearson correlation test). It is concluded that the physical and thermal properties of the foils need careful consideration in future experiments on threshold determination. Although active RL determination may involve the activation of non-periodontal receptors, it remains a realistic parameter to monitor tactile function of teeth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0765.1992.tb01740.x
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  • 7
    Electronic Resource
    Electronic Resource
    Posterior jaw bone resorption in osseointegrated implant-supported overdentures (1992)
    Copenhagen : Munksgaard International Publishers
    Clinical oral implants research 3 (1992), S. 0 
    Details
    ISSN: 1600-0501
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: For several years, osseointegrated implant-supported overdentures have been used in the rehabilitation of full edentulism with excellent results, at least in the lower jaw. This study involved 3 groups of patients with different prosthetic reconstructions:(1) mandibular overdentures supported by 2 implants connected by a bar (30 patients), (2) mandibular fixed prostheses supported by 4–6 implants (25 patients) and (3) mandibular complete dentures without implant support as controls (85 patients). The primary aim of this study was to examine on orthopantomograms (by means of the area index to minimize distortion and magnification errors), posterior mandibular ridge resorption in the 3 treatment groups. The present data demonstrated a minimal posterior mandibular ridge resorption in patients with fixed implant-supported prostheses. A more considerableposterior ridge resorption was observed in the complete denture group and especially in the overdenture wearers. For the latter, the annual posterior jaw bone resorption after the post-extraction remodeling period of 6 months, was 2- to 3-fold that of full denture wearers. When patients were edentulous for more than 10 years, the difference between the 2 latter groups disappeared. It is suggested that although the overdenture design on 2 implants offers advantages from a financial and failure rate point of view, its indications in younger patients should cautiously be evaluated in a long-term perspective concerning posterior mandibular bone resorption.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1600-0501.1992.030203.x
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  • 8
    Electronic Resource
    Electronic Resource
    The reliability of pocket probing around screw-type implants (1991)
    Copenhagen : Munksgaard International Publishers
    Clinical oral implants research 2 (1991), S. 0 
    Details
    ISSN: 1600-0501
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: This study involved 108 patients (age 38–82 years) rehabilitated with overdentures in the lower jaw supported by 2 endosseous screw-shaped implants. At each follow-up visit, the clinical attachment level (PAL) around the implants was assessed with a Merrit-B probe or a constant force electronic probe, Peri-probe, and biannually parallel long-cone radiographs were taken to locate the marginal bone level. These data were used to examine the relationship between bone and attachment level estimations around implants. As a mean, bone level was scored 1.4 mm apically of PAL and this difference remained constant with time. The Pearson correlation coefficient between bone level and PAL, for mesial and distal sites, was 0.67 and 0.61 for the Merrit-B probe, and 0.76 and 0.65, respectively for the Peri-probe. The highest correlations were obtained for sites with a healthy gingiva or in absence of intra-bony craters. Duplicate PAL registrations showed a standard deviation for the intra-examiner variability of 0.37 (Peri-probe) or 0.40 mm (Merrit-B probe) with more than 90% of the variation within 0.5 mm. The mean difference in PAL between Merrit-B probe or Peri-probe was 0.05 mm. It was concluded that the clinical attachment level determination is a reliable indicator for bone level around implants with a moderate healthy gingiva.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1600-0501.1991.020405.x
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  • 9
    Electronic Resource
    Electronic Resource
    Comparative evaluation of the oral tactile function bv means of teeth or implant-supported prostheses (1991)
    Copenhagen : Munksgaard International Publishers
    Clinical oral implants research 2 (1991), S. 0 
    Details
    ISSN: 1600-0501
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: To clarifv more of the tactile function of oral implants, both an interocclusal thickness detection and discrimination task were carried out in 4 different test conditions on 37 patients: t (tooth)/t, i (implant)/t. i/i and d (denture)/0 (overdenture supported by implants). For the interocclusal detection of steel foils. the 50percnt; detection threshold level (RL) in the 4 conditions was 20, 48, 64 and 108 pm, respectively. which indicates significant differences. The ability to discriminate interdental thickness differences was tested with a 0.2 and 1.0 mm standard. It was evaluated as the 75% discrimination level (DL). In the 0.2 mm discrimination task, corresponding DL-values for the t/t, i/t, i/i and d/o condition were 25, 55, 66 and 134 μm, whereas the 1.0 mm standard gave values of 193. 293, 336 and 348 μm. respectively. All results differed significantly from each other (p〈0.05) except for the i/i-d/o comparison of the 1.0 mm discrimination task where the difference was negligible. The present findings indicate that the tactile sensibility of implants is reduced with regard to natural teeth. Remaining receptors of the peri-implant tissues might play a compensatory role in the decreased exteroceptive I function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1600-0501.1991.020205.x
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  • 10
    Electronic Resource
    Electronic Resource
    TCR1+ large granular lymphocyte proliferation in rheumatoid arthritis (1994)
    Springer
    Rheumatology international 14 (1994), S. 163-168 
    Details
    ISSN: 1437-160X
    Keywords: Tγ-lymphoproliferative syndrome ; Large granular lymphocytes ; Rheumatoid arthritis ; α/β T cell receptor (TCR2) ; γ/δ TCR1+
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The Tγ-lymphoproliferative syndrome is characterized by a proliferation of large granular lymphocytes (LGL). It is often associated with neutropenia, and in 30% of cases with rheumatoid arthritis (RA). Phenotypic analysis has demonstrated that in most cases of RA with Tγ-proliferative disease, the LGL represent T cells with a clonal rearrangement of the α/β T cell receptor (TCR2). Here, three patients with γ/δ TCR1+ LGL proliferation suffering from long-standing arthritis and neutropenia are described. The first patient with RA showed an expansion of a heterogeneous CD2+ CD16+ CD56- LGL population, of which 30% coexpressed TCR1 with Vδ1 rearrangement. The second patient with ankylosing spondylitis and RA was suffering from proliferation of TCR1+ (Vγ9-, Vδ1-), CD2+ CD16- CD56- LGL with low coexpression of CD8. The third patient with RA was suffering from a proliferation of TCR1+ (Vδ1+, Vγ9-) CD4- CE8- CD16- CD56- lymphocytes. On the basis of these unusual findings, the pathogenetic role of TCR1+ T cells in RA is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00579702
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