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Modified pellicle formation and reduced in vitro bacterial adherence after surface treatment with different siloxane polymers
YKI – Ytkemiska institutet.
1995 (English)In: Colloids and Surfaces B: Biointerfaces, ISSN 0927-7765, E-ISSN 1873-4367, Vol. 5, 161-169 p.Article in journal (Refereed)
Abstract [en]

Formation of salivary pellicles is a prerequisite of bacterial colonization on the tooth and the aim of this study has been to further the understanding of the role of surface properties in formation of the salivary pellicle and subsequent adhesion of oral bacteria. Surface modification as a means of interfering with pellicle and plaque formation has been investigated. Five different silicone-containing compounds were used for the surface treatments: polydimethylsiloxane containing aminoalkyl groups (I), polydimethylsiloxane containing partially neutralized aminoalkyl groups (II), ethyl silicate (III), potassium methyl siliconate (IV) and sodium silicate (V). Studies of water wetting, surface charge, oral bacterial adherence, pellicle and plaque formation were performed on glass slides, hydroxyapatite beads or teeth coated by the test compounds. No correlation was found between contact angle and surface charge, and evidently hydrophobicity, as expressed by water wetting, is not necessarily an indicaton of a low surface concentration of polar groups. All compounds reduced bacterial adherence after saliva contact, compound IV by around 90%. Different patterns were seen in the adsorption of pellicle proteins on the different polysiloxanes. Clinical experiments, however, did not reveal any significant differences in plaque formation.

Place, publisher, year, edition, pages
1995. Vol. 5, 161-169 p.
Keyword [en]
Bacterial adherence, pellicle formation, polysiloxanes, surface charge, water wetting
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-26500OAI: oai:DiVA.org:ri-26500DiVA: diva2:1053502
Note
A977Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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