6McLey L, Boyd RL, Sarker S. Clinical and laboratory evaluation of powered electric toothbrushes: laboratory determination of relative abrasion of three powered toothbrushes[J]. J Clin Dent, 1997,8(3 Spec No):76-80.
7Kuroiwa M, Kodaka T, Kuroiwa M, et al. Dentin hypersensitivity.Occlusion of dentinal tubules by brushing with and without an abrasive dentifrice[J]. J Periodontol, 1994, 65(4):291-296.
8Kuroiwa M, Kodaka T, Kuroiwa M. Microstructural changes of human enamel surfaces by brushing with and without dentifrice containing abrasive[J]. Caries Res, 1993, 27(1):1-8.
9Dyer D, Addy M, Newcombe RG. Studies in vitro of abrasion by different manual toothbrush heads and a standard toothpaste[J]. J Clin Periodontol, 2000, 27(2):99-103.
10Kodaka T, Kobori M, Hirayama A, et al. Abrasion of human enamel by brushing with a commercial dentifrice containing hydroxyapatite crystals in vitro[J]. J Electron Microsc (Tokyo), 48(2):167-172.
