Shaky tooth at the age of 18 is a big concern. You should absolutely consult a dentist and take the matter at priority.

Visit dentist for clinical evaluation shaky teeth can be splinted to stabilize

Shaky tooth can be fixed by a procedure called as splinting. But before that we may have to diagnose the causes of shaky tooth. If it has happened all on its own or due to injury or due to any other reasons has to ruled out. Even the problem associated with that will have to be corrected.

U haven’t mentioned y ur teeth r moving.... is it because u had a fall or are they moving only at some particular time..... please if u r asking a question nd expecting a reply then u need to b clear

Hello, thank you for your query. At 18 years, most of your permanent adult teeth have usually erupted. Especially all the front teeth. And permanent teeth normally are not mobile (do not shake) Please provide us with the following details- 1. Since when have you noticed that they are shaking 2. Does it give you any pain? 3. Did you undergo any previous dental treatment such as braces? I would still suggest that you get a basic consultation done just to ensure timely intervention, if needed. Have a nice day!