Removal mechanism of artificial dental plaque by impact of micro-droplets

Satoshi Uehara, Tomoki Nakajima, Shuichi Moriya, Shigenao Maruyama, Takehiko Sato

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


This paper presents the experimental evaluation of the impact of a single water droplet on a model of artificial dental plaque used as a biofilm. The instantaneous moment of the impact of the droplet on the biofilm was visualized using a high-speed imaging technique. It was found that the artificial plaque could withstand a shear stress of 10.5 kPa, and the normal stress resulting from the impact of the droplet was a dominant factor of the plaque-removal process investigated in our experiment. The actual impact of a single droplet on artificial plaque was precisely measured as the formation of a three-dimensional surface structure of a crater.

Original languageEnglish
Pages (from-to)N20-N24
JournalECS Journal of Solid State Science and Technology
Issue number2
Publication statusPublished - 2019 Jan

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials


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