Suitability of Secondary PEEK Telescopic Crowns on Zirconia Primary Crowns: The Influence of Fabrication Method and Taper
| Autor: | Christina Wagner, Veronika Stock, Patrick R. Schmidlin, Malgorzata Roos, Marlis Eichberger, Bogna Stawarczyk, Susanne Merk |
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| Přispěvatelé: | University of Zurich, Stawarczyk, Bogna |
| Rok vydání: | 2016 |
| Předmět: |
Fabrication
Materials science polyetheretherketone (PEEK) zirconia telescopic crowns computer-aided design/computer-aided manufacturing (CAD/CAM) retention load (RL) 610 Medicine & health 02 engineering and technology lcsh:Technology Article 03 medical and health sciences 0302 clinical medicine Fabrication methods 10066 Clinic of Conservative and Preventive Dentistry Peek General Materials Science Cubic zirconia Composite material lcsh:Microscopy lcsh:QC120-168.85 lcsh:QH201-278.5 lcsh:T 030206 dentistry 10060 Epidemiology Biostatistics and Prevention Institute (EBPI) 021001 nanoscience & nanotechnology 2500 General Materials Science lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials Materials, Vol 9, Iss 11, p 908 (2016) Materials; Volume 9; Issue 11; Pages: 908 |
| DOI: | 10.5167/uzh-130157 |
| Popis: | This study investigates the retention load (RL) between ZrO2 primary crowns and secondary polyetheretherketone (PEEK) crowns made by different fabrication methods with three different tapers. Standardized primary ZrO2 crowns were fabricated with three different tapers: 0°, 1°, and 2° (n = 10/group). Ten secondary crowns were fabricated (i) milled from breCam BioHPP blanks (PM); (ii) pressed from industrially fabricated PEEK pellets (PP) (BioHPP Pellet); or (iii) pressed from granular PEEK (PG) (BioHPP Granulat). One calibrated operator adjusted all crowns. In total, the RL of 90 secondary crowns were measured in pull-off tests at 50 mm/min, and each specimen was tested 20 times. Two- and one-way ANOVAs followed by a Scheffé’s post-hoc test were used for data analysis (p < 0.05). Within crowns with a 0° taper, the PP group showed significantly higher retention load values compared with the other groups. Among the 1° taper, the PM group presented significantly lower retention loads than the PP group. However, the pressing type had no impact on the results. Within the 2° taper, the fabrication method had no influence on the RL. Within the PM group, the 2° taper showed significantly higher retention load compared with the 1° taper. The taper with 0° was in the same range value as the 1° and 2° tapers. No impact of the taper on the retention value was observed between the PP groups. Within the PG groups, the 0° taper presented significantly lower RL than the 1° taper, whereas the 2° taper showed no differences. The fabrication method of the secondary PEEK crowns and taper angles showed no consistent effect within all tested groups. |
| Databáze: | OpenAIRE |
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