Biofilm on orthodontic retention wires: an in vitro and in vivo study

Jongsma, M., 2015, [S.l.]: [S.n.]. 136 p.

Research output: ThesisThesis fully internal (DIV)Academic

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  • Title and contents

    Final publisher's version, 148 KB, PDF-document

  • Chapter 1

    Final publisher's version, 79 KB, PDF-document

  • Chapter 2

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  • Chapter 3

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  • Chapter 4

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  • Chapter 5

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  • Chapter 6

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  • Chapter 7

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  • Complete dissertation

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  • Propositions

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  • Marije Jongsma
Orthodontic treatment is becoming increasingly popular. Retention wires are placed behind the teeth to maintain treatment results. These wires are very effective, but the drawback of these wires is that biofilm (dental plaque) adheres to them, leading to complications such as gingivitis and dental caries around the wires.
In this thesis it was evaluated how the formation of biofilm on retention wires could be influenced so that complications around the wires can be prevented as much as possible. The shape of the wires affects the amount of biofilm formation. More biofilm is formed on a wire that is made up of multiple strands compared to a wire that consists of a single strand. The surface of a multi-strand wire is rougher, making it easier for the biofilm to adhere. The amount of biofilm that forms on the wires can be reduced by the use of an antibacterial toothpaste, whether or not combined with an antibacterial mouthwash. Interestingly, the use of these agents also changed the composition of the biofilm. It becomes less harmful because bacteria that cause dental caries and gingivitis are found less frequently in the biofilm. However, a problem of biofilms is that they have a very compact structure, and therefore it is difficult for anti-bacterial agents to penetrate the biofilm. This reduces their efficacy. However, by using an powered toothbrush the structure of the biofilm can be changed. It becomes more open and therefore more permeable to antibacterial agents, increasing the effects of these agents.
Translated title of the contributionBiofilm op orthodontische retentiedraden: een in vitro en in vivo onderzoek
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
Award date1-Apr-2015
Place of Publication[S.l.]
Print ISBNs978-94-6108-923-6
Electronic ISBNs978-94-6108-924-3
Publication statusPublished - 2015

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