Comparative study on bacterial cross-contamination between toothbrushes using pump-type and tube-type toothpaste dispenser
INTRODUCTION: Toothbrushes are expected to be manufactured free of microorganisms, but after a single use, varying from 30 seconds to 4 minutes, toothbrushes may become contaminated by a wide array of bacteria, viruses, yeast and fungi which are present in the oral cavity and in the environment. Stu...
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| フォーマット: | 学位論文 |
| 言語: | English |
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