Related Experiment Video
Updated: Oct 25, 2025
06:36
Treating Surfaces with a Cold Atmospheric Pressure Plasma using the COST-Jet
Published on: November 2, 2020
4.3K
In vitro study on how cold plasma affects dentin surface characteristics
Henrico Badaoui Strazzi-Sahyon1, Thaís Yumi Umeda Suzuki2, Glívia Queiroz Lima3
1Department of Dental Materials and Prosthodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil.
Journal of the Mechanical Behavior of Biomedical Materials
|August 9, 2021
Summary
Cold plasma treatment using argon gas with oxygen significantly improved dentin wettability, surface energy, and interaction energy. These cold plasma methods enhanced dentin surface characteristics without altering roughness, morphology, or chemical composition.
Area of Science:
- Biomaterials Science
- Surface Science
- Dental Materials
Background:
- Limited studies exist on cold plasma's effects on dentin surface properties.
- Understanding these effects is crucial for optimizing dental treatments.
Purpose of the Study:
- To investigate cold plasma's impact on dentin wettability, surface energy, roughness, morphology, and chemical composition.
- To evaluate the influence of exposure time, distance, and argon-oxygen mixtures on these properties.
Main Methods:
- Bovine dentin samples were treated with cold plasma using varying argon and oxygen concentrations, exposure times, and distances.
- Contact angle, surface energy, total free interaction energy, surface roughness, morphology, and chemical composition were analyzed.
Main Results:
- Cold plasma significantly reduced contact angles and increased total free interaction energy.
- Argon gas alone showed no significant changes compared to the control.
- Oxygen addition enhanced dentin surface characteristics, while roughness, morphology, and chemical composition remained unchanged.
Conclusions:
- Cold plasma generated by argon and oxygen improves dentin wettability, surface energy, and interaction energy.
- Specific protocols (Ar-6mm-15sec, ArO2-3mm-30sec, ArO3-3mm-15sec) are recommended for optimal dentin surface modification.
- These treatments preserve dentin's inherent surface roughness, morphology, and chemical composition.
