Effects of Plaque Control on the Patency of Dentinal Tubules: An In Vivo Study in Beagle Dogs

• Autores: Takashi Matsui, Shigeyuki Ebisu, Toshiyuki Suge, Akiko Kawasaki, Kunio Ishikawa
• Localización: Journal of periodontology, ISSN 0022-3492, Vol. 77, Nº. 3, 2006, págs. 454-459
• Idioma: inglés
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• Resumen

  • Effects of Plaque Control on the Patency of Dentinal Tubules: An In Vivo Study in Beagle Dogs Toshiyuki Suge,* Akiko Kawasaki,* Kunio Ishikawa,† Takashi Matsuo,* and Shigeyuki Ebisu‡ *Department of Conservative Dentistry, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan.

    †Department of Biomaterials, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.

    ‡Department of Restorative Dentistry and Endodontology, Division of Oral Infections and Disease Control, Osaka University Graduate School of Dentistry, Osaka, Japan.

    Correspondence: Dr. Toshiyuki Suge, Department of Conservative Dentistry, Institute of Health Biosciences, The University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8504, Japan. Fax: 81-88-633-7340; e-mail: suge@dent.tokushima-u.ac.jp.

    Background: The aim of this in vivo study was to evaluate the effects of plaque control on the patency of dentinal tubules using vital teeth of beagle dogs.

    Methods: Class V cavities were prepared on the cervical areas of the mandibular and maxillary molars in each dog with a diamond point. To simulate the state of dentinal hypersensitivity, the teeth were etched with 50% citric acid for 2 minutes to obtain patent dentinal tubules. Plaque control was achieved by brushing the left-side teeth every day, whereas no plaque control was performed for the right-side teeth. A dentin biopsy was performed after 1, 2, and 3 weeks using the cylindrical diamond point to obtain dentin specimens.

    Results: In the plaque control group, some of the dentinal tubules were occluded with precipitate (Ca/P = 1.49), and the diameter of the dentinal tubules decreased from 2.42 ± 0.33 μm (mean ± SD) to 1.11 ± 0.51 μm after 7 days, although most of the dentinal tubules remained open. In contrast, no precipitate was observed in the dentinal tubules of the non-plaque control group. Also, the diameter of the dentinal tubules increased from 2.42 ± 0.33 to 2.9 ± 0.49 μm, due to the demineralization of the peritubular and intertubular dentin.

    Conclusion: Plaque control plays a key role in reducing the patency of dentinal tubules and, therefore, might promote the natural repair of dentinal hypersensitivity.

    KEYWORDS: Calcium phosphate, dentin, dentin plaque, dentin sensitivity Cited by Maria Mantzourani and Deepak Sharma. (2013) Dentine sensitivity: Past, present and future. Journal of Dentistry 41, S3-S17.

    Online publication date: 1-Jul-2013.

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