What is the pH range of dental biofilm before eating?

The pH range of dental biofilm before eating typically falls between 6.2 and 7.0. This range indicates a neutral to slightly basic environment, which is important for maintaining the health of oral tissues and preventing demineralization of enamel. A neutral pH helps to stabilize the oral environment, reducing the risk of acidic conditions that can lead to tooth decay and the formation of cavities.

In a healthy state, saliva also plays a crucial role in buffering the pH of biofilm, further ensuring that it remains within a safe range. The biofilm's pH can change dramatically after food intake, especially if the food is high in sugar, leading to a more acidic environment. Understanding the normal pH range of biofilm is essential for dental hygienists, as it can inform strategies for patient education and caries prevention.