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  • 1980-1984  (5)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    The pulpal response to a direct filling resin without an inorganic filler-Isopast (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 7 (1980), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A recently marketed direct filling resin, Isosite, does not have an inorganic filler. This material is offered as a hand-mixed, two-paste system (Isopast) and is also available in capsulated form and as an ultraviolet activated sytem. Since it is well known that direct filling resins used hitherto are capable of causing pulpal irritation, especially in deep cavities, the pulpal response to Isopast was investigated. The experimental animals were twenty-four vervet monkeys (Cercopithecus aethiops). Under general anaesthesia a labial cavity was cut in each of the eight incisor teeth (maxillary and mandibular) of each animal. In each animal two cavities were filled with unlined Isopast, two with Isopast over a lining of calcium hydroxide cement, two with silicate cement and two with zinc oxide/eugenol cement. The animals were killed at intervals of 2, 28 and 56 days. The teeth recovered were decalcified and stained for histological examination. Of the total of 192 specimens sixty-five were discarded, two because of accidental pulpal exposure, one because of leakage and sixy-three because of technical defects in the preparation of the material, leaving 126 specimens available for assessment. This was done independently by three examiners who did not know which materials had elicited the reactions observed. It was found that after 2 days unlined Isopast caused more pulpal disturbance than other materials. After 28 and 56 day intervals lined Isopast caused less disturbance than the other materials. The maker's recommendation that linings should be used is confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1980.tb01456.x
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Oral mucosa of the vervet monkey (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 15 (1980), S. 0 
    Details
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Specimens of oral mucosa were taken from alveolar mucosa, attached gingiva, cheek, floor of mouth, hard palate, lip, soft palate and tongue from vervet monkeys (Cercopithecus aethiops), and prepared for histological and histometric examination. Masticatory mucosa showed an epithelial-connective tissue union comprised of prominent thin rete pegs and connective tissue papillae. Lining mucosa had broader rete pegs and short connective tissue papillae. Elastic fibres were seen in all tissues except hard palate and attached gingiva. Histometric examination showed considerable variation in epithelial width and cell densities between the various epithelia. Tongue had the widest epithelium and alveolar mucosa the narrowest. Cell density was greatest in alveolar mucosa and least in cheek and floor of the mouth epithelium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0765.1980.tb00302.x
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Effect of cutting speeds and a cavity liner on the pulpal response to Nobetec® (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 10 (1981), S. 0 
    Details
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract The investigation was undertaken to determine the response to Nobetec®, a modified zinc oxide-eugenol cement, widely used as a negative control material in pulpal studies, under conditions of high- and low-speed cavity preparation, with and without a cavity liner Dycal®. The pulpal responses were evaluated at intervals of 2 days, 2 weeks and 8 weeks in the permanent maxillary and mandibular incisors in 26 vervet monkeys using labial Class V cavities prepared in 208 teeth. Nobetec® was found to be more irritant to the dental pulp than Dycal® although this difference was not statistically significant and the degree of irritation was low. The pulpal irritation caused by high- and low-speed cavity preparation was similar and choice of speed should be a matter of personal preference.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0714.1981.tb01254.x
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The ultrastructural response to loading of the oral mucosa of the vervet monkey (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 18 (1983), S. 0 
    Details
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The ultrastructural changes occurring within the epithelium of the palate, attached gingiva, tongue, buccal mucosa, and alveolar mucosa of the vervet monkey when a mechanical load was applied to the tissues was examined. The effect of the load was assessed in terms of changes in epithelial cell and nuclear shape, intracytoplasmic structures, cell membrane interdigitation, intercellular space, and changes in the shape of non-keratinocytes found within the epithelium. Loading produced a flattening of cells and nuclei throughout the epithelium. Intercellular space was reduced, cell membranes were flattened or else underwent increased interdigitation, tonofilaments became functionally oriented, and cytoplasmic vacuolation took place. The mitochondria appeared unchanged on loading. These changes were more marked in the nonkeratinized buccal and alveolar mucosa than in the keratinized palate, tongue, and attached gingiva. A histometric analysis which was carried out on the normal and loaded attached gingiva and alveolar mucosa revealed that the cells and nuclei of both tissue types underwent a significant change in width when loaded. Loading produced no significant change in the diameter of mitochondria in the basal and spinous layers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0765.1983.tb00385.x
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    A quantitative electron microscope study of desmosomes and hemi-desmosomes in vervet monkey oral mucosa (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 18 (1983), S. 0 
    Details
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The distribution and size of hemidesmosomes on the basal cell membrane adjacent to the basement lamina and desmosomes on the spinous cell membranes were compared in the attached gingiva, hard palate, tongue, alveolar mucosa, and buccal mucosa of the vervet monkey. The lengths of the sectioned cell membranes and pooled desmosome lengths were measured on photomicrographs of basal and spinous cells printed at standard magnification. The mean desmosomal length, interdesmosomal distance, and percentage cell membrane occupied by desmosomes was calculated. It was found that the percentage cell membrane occupied by hemidesmosomes was significantly higher in the basal cells of the attached gingiva and palate than in the alveolar mucosa, buccal mucosa, and tongue. In the spinous cell layer the percentage cell membrane occupied by desmosomes and the desmosome length was significantly higher in the tongue, attached gingiva, and hard palate than in the alveolar mucosa and buccal mucosa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0765.1983.tb00395.x
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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