Contact wear of artificial denture teeth. Issue 2 (April 2018)
- Record Type:
- Journal Article
- Title:
- Contact wear of artificial denture teeth. Issue 2 (April 2018)
- Main Title:
- Contact wear of artificial denture teeth
- Authors:
- Preis, Verena
Hahnel, Sebastian
Behr, Michael
Rosentritt, Martin - Abstract:
- Abstract: Purpose: High wear resistance of denture teeth preserves good occlusal relationship and sufficient parafunctional stability. This in-vitro investigation aimed to determine and compare the wear performance of different artificial denture teeth. Methods: Denture teeth of fifteen commercial products ( n = 8/group) were loaded in a pin-on-block design using steatite antagonists (d = 3 mm). Cyclic loading (50 N) was applied for 120, 000 loadings ( f = 1.2 Hz) with simultaneous thermal cycling (distilled water, 5 °C/55 °C, 2 min/cycle). A loading cycle consisted of a vertical 1 mm impact and a subsequent lateral 1 mm sliding movement. Worn areas were digitalized (3-D-laser-scanning-microscope). Maximum and mean wear depth and surface roughness were determined and statistically compared (one-way Anova, Tukey-HSD test, α = 0.05). Worn surfaces and cut specimens were investigated with scanning electron microscopy (SEM). Results: Maximum wear varied between 475.1 μm and 1232.2 μm. Mean wear was between 241.1 μm and 753.6 μm with significant differences ( p < 0.001) between individual materials. Mean and maximum wear showed a significant correlation (Pearson's correlation coefficient: 0.942). Surface roughness increased between unworn to worn surface by 1.2 μm (Ra, p = 0.387) and by 41.7 μm (Rz, p = 0.000). All materials provided round or drop-shaped wear traces. Superficial analysis showed no cracks, chipping or fractures in the worn areas. Detailed evaluation of cutAbstract: Purpose: High wear resistance of denture teeth preserves good occlusal relationship and sufficient parafunctional stability. This in-vitro investigation aimed to determine and compare the wear performance of different artificial denture teeth. Methods: Denture teeth of fifteen commercial products ( n = 8/group) were loaded in a pin-on-block design using steatite antagonists (d = 3 mm). Cyclic loading (50 N) was applied for 120, 000 loadings ( f = 1.2 Hz) with simultaneous thermal cycling (distilled water, 5 °C/55 °C, 2 min/cycle). A loading cycle consisted of a vertical 1 mm impact and a subsequent lateral 1 mm sliding movement. Worn areas were digitalized (3-D-laser-scanning-microscope). Maximum and mean wear depth and surface roughness were determined and statistically compared (one-way Anova, Tukey-HSD test, α = 0.05). Worn surfaces and cut specimens were investigated with scanning electron microscopy (SEM). Results: Maximum wear varied between 475.1 μm and 1232.2 μm. Mean wear was between 241.1 μm and 753.6 μm with significant differences ( p < 0.001) between individual materials. Mean and maximum wear showed a significant correlation (Pearson's correlation coefficient: 0.942). Surface roughness increased between unworn to worn surface by 1.2 μm (Ra, p = 0.387) and by 41.7 μm (Rz, p = 0.000). All materials provided round or drop-shaped wear traces. Superficial analysis showed no cracks, chipping or fractures in the worn areas. Detailed evaluation of cut specimens with SEM exposed cracks on the bottom of the wear traces. Conclusions: Denture teeth showed significantly different in-vitro wear performance and increased roughness in the wear trace. Differences may be attributed to the composition of the materials, regarding both filler and polymer structure. The selection of teeth might contribute to enhanced in-vivo performance of the denture. … (more)
- Is Part Of:
- Journal of prosthodontic research. Volume 62:Issue 2(2018)
- Journal:
- Journal of prosthodontic research
- Issue:
- Volume 62:Issue 2(2018)
- Issue Display:
- Volume 62, Issue 2 (2018)
- Year:
- 2018
- Volume:
- 62
- Issue:
- 2
- Issue Sort Value:
- 2018-0062-0002-0000
- Page Start:
- 252
- Page End:
- 257
- Publication Date:
- 2018-04
- Subjects:
- Chewing simulation -- Composite teeth -- Denture teeth -- Resin-based teeth -- Wear resistance
Prosthodontics -- Periodicals
Dentistry -- Periodicals
Prosthodontics -- Periodicals
Electronic journals
Computer network resources
617.6905 - Journal URLs:
- http://www.sciencedirect.com/science/journal/18831958 ↗
http://www.elsevier.com/journals ↗ - DOI:
- 10.1016/j.jpor.2017.11.001 ↗
- Languages:
- English
- ISSNs:
- 1883-1958
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 5042.915000
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 6255.xml