Combined use of baking soda and electric toothbrushing for removal of artificial extrinsic stain on enamel surface: an in vitro study

• Akiko Haruyama ^[1] ; Masashi Kojima ^[1] ; Atsushi Kameyama ^[2] ; Takashi Muramatsu ^[1]
  1. [1] Tokyo Dental College

     Tokyo Dental College

     Chūō-ku, Japón

     
  2. [2] Professor, Department of Operative Dentistry, Endodontology, and Periodontology, School of Dentistry, Matsumoto Dental Uni- versity, 1780 Gobara Hirooka, Shiojiri, Nagano 399-0781, Japan; Professor, Department of Oral Health Promotion, Graduate School of Oral Medicine, Matsumoto Dental University, 1780 Gobara Hirooka, Shiojiri, Nagano 399-0781, Japan
• Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 14, Nº. 1 (January), 2022, págs. 9-15
• Idioma: inglés
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• Resumen

  • Background: This study aimed to investigate the combined effect of baking soda and electric toothbrushing on the removal of artificial extrinsic stain in vitro.

    Material and Methods: Flat enamel surfaces of 15 bovine incisors were artificially stained with 10% citric acid / 3% fe- rric chloride solution followed by 1% tannic acid solution. These specimens were randomly divided into three groups (n = 5) – Group S+B: brushing with an electric toothbrush and baking soda, Group S+C: brushing with an electric toothbrush and fluoride dentifrice, Group S: brushing only with an electric toothbrush. Color values (L*, a*, and b*) and surface roughness were measured before and after brushing (after 1, 2, 3, and 5 min). The data were statistically analyzed using two-way analysis of variance and Tukey’s honest significant difference test as a post hoc test (p < 0.05).

    Results: The L* value of Group S+B increased over time, and was significantly different between before brushing and at 5 min (p < 0.05). A significant difference in the ΔE* value of Group S+B was found at 5 min (p < 0.05). However, no significant difference was found in the ΔE* values of Group S+C and Group S. No significant differences in Ra were found in any of the groups.

    Conclusions: The results of this study suggest that the combined use of baking soda and electric toothbrushing has an excellent stain-removing effect compared with electric toothbrushing with a fluoride dentifrice. Additionally, the changes in surface roughness were similar to the changes caused by the use of general dentifrices.