Both cells have same functions. The galvanic cell consist of two different metals connected by salt bridge. It is also known as electrochemical cell. It should not be confused with electrolytic cell. Voltaic cell also consist of two separate compartments.
But very oftenly, you get them from age 17-21. So yeah it depends if you already have your 12 yearold molars, I will edit if you say something! But here is ome more info on wisdom teeth! Wisdom Teeth get their name because they usually arrive about the time of adulthood (17-21 years of age).
1 Some dentists and oral surgeons think it's best to remove wisdom teeth before a person is 20 years old. Removing them when you're older is harder to do and more likely to cause problems.  Some think it's best to wait and remove wisdom teeth only if there is a problem, especially if you are older than 30.