专家影片：兰迪尔·西伍德哈里·布盖特医生讲述牙齿在消化过程中的作用。

Discover how the mouth plays a crucial role in digestion, from the initial chewing with teeth to the production of saliva that softens food and begins chemical breakdown. The video emphasises the importance of oral health for effective digestion and explains how various oral structures collaborate to prepare food for swallowing and further digestion. Learn about the significance of dental health and the impact of missing teeth on dietary choices.