- AutorIn
- Mieszko Wieckiewicz
- Volker Opitz
- Gert Richter
- Klaus W. Böning
- Titel
- Physical Properties of Polyamide-12 versus PMMA Denture Base Material
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa-147158
- Quellenangabe
- BioMed Research International, Volume 2014 (2014), Article ID 150289, ISSN: 2314-6133
- Erstveröffentlichung
- 2014
- Abstract (EN)
- Objectives. Polyamide-12 (PA) is a flexible material suited for denture bases and clasping. This study investigated its potential aging effects with a focus on surface roughness, color stability, and elasticity. Methods. PA specimens (Valplast) of 40 × 10 × 2mm and equally measuring PMMA specimens (Palapress) as control were fabricated. Color changes after storage in air, water, coffee, and red wine (n = 10) were measured using the CIE L*a*b color specification. Elasticity after thermocycling (1000, 3000, and 7000 cycles, n = 15) was measured by three-point bending testing. Mean surface roughness (Ra) was determined after storage in the liquids mentioned above and thermocycling (n = 10). Results. Tukey’s HSD test (P < 0.05) revealed statistically significant color changes of PA in red wine (ΔE = 4.27 after 12 days, EΔE = 6.90 after 12 days) and coffee (ΔE = 3.93 after 36 days) but no color changes in PMMA. Elastic modulus of PA was 845MPa and not affected by thermocycling (Tukey’s HSD test, P > 0.81). Dry specimens showed significantly decreased elasticity (P < 0.001). Mean surface roughness (PA 0.20 μm, PMMA 0.28 μm) did not change significantly after thermocycling or storage (Mann-Whitney U-test, 0.16 < P < 0.65). Significance. PA exhibited a higher susceptibility to discoloration than PMMA. Neither surface roughness nor elasticity of PA was altered by artificial aging.
- Andere Ausgabe
- DOI: 10.1155/2014/150298
- Link zur Originalpublikation in der Zeitschrift BioMed Research International.
Link: http://dx.doi.org/10.1155/2014/150298 - Freie Schlagwörter (DE)
- Polyamid-12, PMMA, Prothesenbasismaterial, Zahnersatz, TU Dresden, Publikationsfonds
- Freie Schlagwörter (EN)
- Polyamide-12, PMMA, Denture Base Material, denture,Technical University Dresden, Publication funds
- Klassifikation (DDC)
- 610, 570
- Klassifikation (RVK)
- WA 15000, XA 10000
- Verlag
- Hindawi, New York, USA
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa-147158
- Veröffentlichungsdatum Qucosa
- 07.07.2014
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis
- CC BY 3.0