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The role of the toothbrush in the abrasion process

Authors

  • G Tellefsen,

    1. Authors’ affiliations:
      Georg Tellefsen, Annsofi Johannsen, Department of Dental Medicine, Division of Periodontology, Karolinska Institute, Huddinge, Sweden
      Anders Liljeborg, Nanostructurephysics, KTH-Albanova, Stockholm, Sweden
      Gunnar Johannsen, Department of Periodontology, Danakliniken, Danderyd, Sweden
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  • A Liljeborg,

    1. Authors’ affiliations:
      Georg Tellefsen, Annsofi Johannsen, Department of Dental Medicine, Division of Periodontology, Karolinska Institute, Huddinge, Sweden
      Anders Liljeborg, Nanostructurephysics, KTH-Albanova, Stockholm, Sweden
      Gunnar Johannsen, Department of Periodontology, Danakliniken, Danderyd, Sweden
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  • A Johannsen,

    1. Authors’ affiliations:
      Georg Tellefsen, Annsofi Johannsen, Department of Dental Medicine, Division of Periodontology, Karolinska Institute, Huddinge, Sweden
      Anders Liljeborg, Nanostructurephysics, KTH-Albanova, Stockholm, Sweden
      Gunnar Johannsen, Department of Periodontology, Danakliniken, Danderyd, Sweden
    Search for more papers by this author
  • G Johannsen

    1. Authors’ affiliations:
      Georg Tellefsen, Annsofi Johannsen, Department of Dental Medicine, Division of Periodontology, Karolinska Institute, Huddinge, Sweden
      Anders Liljeborg, Nanostructurephysics, KTH-Albanova, Stockholm, Sweden
      Gunnar Johannsen, Department of Periodontology, Danakliniken, Danderyd, Sweden
    Search for more papers by this author

G Tellefsen
Department of Dental Medicine
Division of Periodontology
Karolinska Institute
Box 4064
14104 Huddinge
Sweden
Tel.: +46 87536140
Fax: +46 87536163
E-mail: georg.tellefsen@ki.se

Abstract

To cite this article:
Int J Dent Hygiene9, 2011; 284–290
DOI: 10.1111/j.1601-5037.2011.00505.x
Tellefsen G, Liljeborg A, Johannsen A, Johannsen G. The role of the toothbrush in the abrasion process.

Abstract:  Aim:   To evaluate the relative abrasivity of different toothbrushes both qualitatively and quantitatively.

Materials and Methods:  Acrylic plates were exposed to brushing in a brushing machine with ten different toothbrushes with water alone and with a toothpaste. The results were evaluated using a profilometer after one and 6 h of brushing (corresponding to 2000 and 12 000 double strokes, respectively). A surface roughness value (Ra-value) and also a volume loss value were calculated from the profilometer measurements. These values were then compared to each other.

Results: The results showed that brushing with water alone caused less abrasion than when a toothpaste was added. Six-hour brushing with water caused less abrasion than 1 h with a toothpaste. The number of filaments or filament diameter influenced the results in various ways. When brushing with water, the harder toothbrush (Jordan Medium) caused more abrasion (higher Ra-value), but when adding the toothpaste, the softer toothbrush (Jordan soft) caused more abrasion after 12 000 double strokes.

Conclusion:  Besides supporting the fact that a toothpaste is needed to create a significant abrasion, this study also showed that a softer toothbrush can cause as much and in some cases more abrasion than harder ones. When conducting abrasivity studies, it is important to look at both the quantitative and qualitative aspect of abrasivity.

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