Jie-Yuan Zhang

Jan 9, 2025 | onlinelibrary.wiley.com | Zhuo Chen |Qian-Ying Mao |Jie-Yuan Zhang |Yu-Xiao Wu

1 Introduction Saliva is essential for maintaining oral health, playing a role in lubrication, taste, chewing, swallowing and initial immune defense (Roblegg, Coughran, and Sirjani 2019). Studies have shown that older people experience decreased salivary secretion, leading to symptoms such as dysphagia, increased risk of dental caries, and dysbiosis of the oral microbiota (Affoo et al. 2015; Xu, Laguna, and Sarkar 2019).