Study design
SECONDARY
This single-center, randomized, controlled clinical trial was conducted at the Department of Oral Health Care, Kyushu Dental University Hospital (Kitakyushu, Japan) between October 2021 and December 2022. The main objective was to evaluate oral care methods using the number of bacteria in the saliva as an indicator, and the secondary objective was to evaluate the factors affecting the number of bacteria in the saliva.