Process for providing a dental article
AssigneeStraumann Holding AG
InventorSimon Berner
Life of this patent
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Abstract
A process for providing a sterilized dental article, at least a portion of the surface of which exhibiting a contact angle of less than 45°. The process includes the subsequent steps of a) providing a dental article and b) subjecting the initial dental article to a hydrogen peroxide plasma treatment. It is characterized in that the hydrogen peroxide plasma sterilization treatment of step b) is carried out in the presence of a carbon-containing compound, which during treatment is converted to form a carboxylic group attached to the surface of the dental article.
Claims20
A process for providing a dental article, in which at least a portion of a surface of the dental article exhibits a contact angle of less than 45°, the process comprising:
- a) providing an initial dental article;
- and
- b) subjecting the initial dental article to a hydrogen peroxide plasma treatment,
- wherein:
- a carbon-containing compound is present on a surface of the initial dental article,
- the hydrogen peroxide plasma treatment of step b) is carried out in the presence of the carbon-containing compound,
- during the hydrogen peroxide plasma treatment, the carbon-containing compound is converted to form a carboxylic group attached to the surface of the dental article, and
- a hydrophilicity of the dental article after the dental article is subjected to the hydrogen peroxide plasma treatment in step b) is higher than a hydrophilicity of the initial dental article provided in step a).
A method of improving the hydrophilicity of a dental article, the method comprising:
- subjecting the dental article to a hydrogen peroxide plasma treatment,
- wherein:
- the dental article contains a carbon-containing compound on a surface thereof, and during the hydrogen peroxide plasma treatment, the carbon-containing compound is converted to form a carboxylic group attached to the surface of the dental article, and
- the hydrophilicity of the dental article is increased after the dental article is subjected to the hydrogen peroxide plasma treatment.
Dependencies are inferred from the claim text.