What are ways to relieve teething sensitivity?

Fluoride treatment: See a dentist and get Fluoride treatment. Also, consider using tooth paste for sensitive teeth. However, see a dentist to check for any gum recession, cavities or gum disease first.

Various reasons: It all depends on why the teeth are sensitive. It could be due to root sensitivity or decay or broken teeth or a fraction or grinding. Each cause has a different solution. See your dentist.

Fluoride rinses : There are toothpastes for sensitive teeth, Fluoride rinses, and mi paste are all viable options for tooth related sensitivity. You need to visit with your dds/dmd to follow-up and minimize any discomfort associated over time.

Let them chew: Chewing on something cold and firm is helpful. One idea is to give them a damp washcloth that as been frozen in the freezer to chew on. Commercial teeth rings that can be frozen are available as well. Teething is a normal process. I would avoid medication like painkillers unless absolutely necessary. Most babies really don't need them.