We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effect of roughness and acidic medium on wear behavior of dental resin composite.
- Authors
Guo, Jiawen; Bing, Zhaoxia; Yang, Jiajun; Tsoi, James K. H.; Wang, Yan
- Abstract
Background: The aim of the study was to investigate whether the citric acid and rough surface have a synergistic effect leading to severe wear behavior of resin composite. Materials and methods: Disk-shaped (Ø15 × 1.5 mm) specimens of resin composite (n = 12) with different initial roughness were prepared. Reciprocating ball-on-flat wear tests were performed under distilled water and citric acid (pH = 5.5) respectively. The coefficient of friction (COF), wear volume loss, and duration of the running-in period were quantified to assess the wear performance. And the values were analyzed with one-way ANOVA (α = 0.05). Regression analysis was applied to examine the influence of Ra values and mediums on the wear data. The wear morphology was analyzed by scanning electron microscopy and a 3D profilometer. Results: The average COF was higher in distilled water than in citric acid but was independent of the surface roughness. For the composite, the volume loss of worn area and running-in period increased with surface roughness when tested under distilled water. However, these increasing trends were not found in citric acid. All specimens exhibited mild wear behavior with low COF and less superficial abrasion in acidic medium. Conclusions: The effect of initial roughness on wear behavior depends on the medium. In distilled water, resin composites with high initial roughness exhibit a longer running-in time, which eventually leads to a significant increase in material loss. The adverse effects of high roughness can be alleviated by the lubrication of citric acid, which can maintain a mild wear behavior regardless of initial surface roughness.
- Subjects
DENTAL resins; PHYSICS; SCANNING electron microscopy; ONE-way analysis of variance; CITRATES; WATER; REGRESSION analysis; MATERIALS testing; SURFACE properties; COLLECTION &; preservation of biological specimens
- Publication
BMC Oral Health, 2022, Vol 22, Issue 1, p1
- ISSN
1472-6831
- Publication type
Article
- DOI
10.1186/s12903-022-02516-4