But why does this happen? It occurs when the protective layer around your teeth, known as enamel, wears down, it exposes the softer, inner part of the tooth called dentin. This can be due to over-zealous brushing — which means brushing too vigorously or too often. Other causes of enamel loss are due to acid erosion from acidic foods and drinks**.
Another thing that leads to tooth sensitivity is gum recession, which is caused by gum tissue injuries from using a hard-bristled toothbrush.
In the Southeast Asia & Taiwan Research, they also found that only 39% of the respondents were aware of the problem, while the rest were not. So, how do you know if you have tooth sensitivity?
*GlaxoSmithKline (GSK). Sensodyne SEAT Quantitative Research – Malaysia Market Session. September 2021.
**Sensodyne (MY). What is enamel wear. Retrieved from link.