Can a nightguard cause teeth sensitivity?

Yes, a nightguard can cause teeth sensitivity. This is because a nightguard creates a barrier between your teeth and the outside environment, which can trap plaque and bacteria. This can lead to the development of cavities and gum disease, both of which can cause teeth sensitivity. Additionally, a nightguard can put pressure on your teeth, which can also cause sensitivity. If you are experiencing teeth sensitivity after wearing a nightguard, you should talk to your dentist. They may recommend ways to reduce the sensitivity, such as using a different type of nightguard or adjusting the way you wear it.