Lang, Reinhold and Rosentritt, Martin and Leibrock, A. and Behr, M. and Handel, G. (1998) Colour stability of provisional crown and bridge restoration materials. BRITISH DENTAL JOURNAL, 185 (9). pp. 468-471. ISSN 0007-0610,
Full text not available from this repository. (Request a copy)Abstract
Objective In an in vitro study to determine the colour stability of provisional restoration materials, the PMMA synthetics Trimm and Cronsin and the bis-acrylic composites Protemp Garant, Protemp Garant NF, Protemp II and Provipont DC were investigated. Materials and methods The colour changes of the cylindrical untreated samples were measured in comparison with samples after 24 and 72 hours of artificial ageing in a Suntest CPS+ UV ageing device using the Minolta CM 3500d spectrophotometer according to the CIE-L*a*b* system. Results Trimm (light), Cronsin (brown, yellow and universal), Provipont DC (yellow) and Protemp Garant NF (extra light) displayed the greatest discoloration with values greater than or equal to 4-21 Delta E, where discoloration toward yellow could be discerned. The remaining materials showed lower luminance reflectance values of less than or equal to 1-4 Delta E,and therefore greater colour stability. Conclusions Because of their colour stability the materials Cronsin (grey), Protemp Garant (yellow), Protemp II(light), Protemp Garant NF (yellow, light and extra light) could also be used as long-term interim prosthetics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Mar 2023 13:54 |
| Last Modified: | 28 Mar 2023 13:54 |
| URI: | https://pred.uni-regensburg.de/id/eprint/49349 |
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