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  • Blackwell Science Ltd  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 30 (2003), S. 0 
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: summary  The purpose of this in vitro study was to evaluate crown retention after using different sealing systems on prepared dentine. Ca(OH)2 suspension was used in comparison with three adhesive bonding systems (Gluma Desensitizer, Optibond FL, Prompt L-Pop). Extracted human premolars were uniformly prepared with the use of a special parallelometer (11° taper, 4 mm axial length). Groups of 20 teeth each were treated with each sealing system. Then crowns were fabricated and temporarily cemented twice. Finally the abutments were cleaned and the crowns were cemented with a glass–ionomer cement Ketac-Cem. Subgroups of 10 crowns were removed with a universal testing machine following storage in distilled water either for 3 days or for 150 days. Prior to dislodging, the crowns of both groups were subjected to chewing simulation. The mean dislodgement stresses in MPa were between 4ḃ9 and 6ḃ9. A range test of Student–Newmann–Keuls revealed significant differences between Ca(OH)2 and Optibond FL (P 〈 0ḃ05), while the storage time had no significant effect. The level of microleakage increased significantly with storage time (P 〈 0ḃ05). It is concluded, that the use of Gluma Desensitizer and Prompt L-Pop did not affect crown retention as compared with Ca(OH)2, thus may be used in combination with glass–ionomer cement to desensitize prepared teeth.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford UK : Blackwell Science Ltd
    Journal of oral rehabilitation 28 (2001), S. 0 
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The purpose of this retrospective study was to evaluate the changes in the periodontal conditions of patients wearing different designs of removable partial dentures over long-term. Seventy-four patients treated with 101 mainly conical crown-retained dentures (CCRDs) or clasp-retained removable partial dentures (RPDs) or a combination of conical crown and clasp-retained dentures (CRPDs) were re-examined 10 years after insertion. Periodontal findings were compared with baseline values at insertion. A deterioration of the probing depths (PDs) and tooth mobility was found. The abutment teeth of the RPDs suffered more severe deterioration than the abutment teeth of the CCRDs and the CRPDs. The absence of a regular recall system for the patients may be responsible for this outcome.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: summary  The purpose of this study was to evaluate effect of a calcium hydroxide suspension [Ca(OH)2] or glutaraldehyde based dentine primer (GDP) to reduce tooth sensitivity after full crown preparation. Thirty-six patients were treated with Ca(OH)2 on one tooth and with GDP on another. Patients completed a questionnaire regarding sensitivity during crown preparation, when the not-anaesthetized abutments were irritated [cotton pellet (20 °C)]. The teeth were tested before (T0) and after using the desensitizer (T1), again after 7 days (T2), 6 months (T3) and 30 months (T4). The results were registered on a visual analogue scale [0 (no pain)–100 (severe pain)]. The changes of tooth sensitivity between different testing times were analysed. The median and the (interquartile range) for the different time intervals for Ca(OH)2 were ΔT0–T1: 5 (6–17), ΔT0–T2: 17 (14–32), and for GDP, ΔT0–T1: 9 (7–18) ΔT0–T2: 18 (16–33), the decreases in sensitivity were lower for ΔT0–T1 than for ΔT0–T2 for both desensitizers (P 〈 0·001). There was no statistical difference (P 〉 0·05) between the agents (ΔT0–T1, ΔT0–T2, ΔT3–T4). Both substances might be useful in reducing tooth sensitivity after crown preparation, but no differences in the efficacy were found when comparing the materials.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 26 (1999), S. 0 
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The attritional wear of human enamel and four different composite resins for the veneering of crowns was evaluated in a dual-axis chewing simulator over up to 1 200 000 loading cycles. Enamel showed less wear than the composite resins. However, an ultrafine compact-filled composite resin (Targis®) showed a wear not statistically significantly different from that of enamel. The other composite resins showed a statistically significantly higher wear than enamel regardless whether microfine, ultrafine midway-filled or ultrafine compact-filled.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Haemophilia 11 (2005), S. 0 
    ISSN: 1365-2516
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary.  Our objective was to determine costs and trends in treating boys with severe haemophilia A before our centre routinely used prophylaxis.One reviewer extracted data from patient charts to determine resource consumption for 17 boys with severe haemophilia A from 1978 to 1998 at Toronto's Hospital for Sick Children. Resources included factor concentrate, doctors and health care professionals (physiotherapists/social workers), tests (laboratory, radiological and diagnostic) and hospitalizations. Subgroup analysis on those patients infected with HIV and/or hepatitis were also performed. Costs in Canadian Dollars were taken from standard lists and discounted at 3%.Total average cost (range) $62 292 (3339–121 738) per year patient−1; the largest fraction, $59 910 (3103–119 480), 96.2% was accounted for by factor VIII. Hospitalizations accounted for $1832 (0–5217) per patient year−1 including drugs, nursing care and stay. Doctor and health care professionals visits averaged $252 (36–462) and $72 (0–175) per patient year−1, laboratory and other tests cost $201 (22–377) and $26 (2–60) per patient year−1, respectively. The average number of bleeds was 12.9 (2.0–22.0) per patient year−1, decreasing since 1977 by 0.68 per patient year−1 (R2 = 0.56). Hospitalizations averaged 0.22 (0–4) per patient year−1, lasting 2.3 days. From 1984, hospitalizations decreased by 0.025 patient−1 year−1 (R2 = 0.76). Concurrently, the average treatment costs increased by $5456 patient−1 year−1 (R2 = 0.81). Clotting factor concentrate cost per patient increased by $5521 year−1 (R2 = 0.82). Patients with virally transmitted diseases had considerable higher costs.The cost per year was substantial. Costs increased with virally transmitted diseases. Number of bleeds and hospitalizations over the period of study decreased and costs increased because of factor use in secondary prophylaxis.
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