In most cases, wisdom teeth will be completely developed (and finished growing) by the time you’re about 30 years old. Your third molars are the last set of teeth to form, and their nickname is because of how late in life they develop. Usually, the soonest that a wisdom tooth is fully formed is sometime in a person’s mid to late 20s. That’s why it’s so common for the third molars to need to be extracted during the high school and college years.
You might never feel your wisdom teeth growing until they’re almost fully developed. If you’re lucky enough to not experience any wisdom tooth pain in your 20s and early 30s, then you’re probably “off the hook” so to speak. That being said, it’s important to have a dentist examine your third molars to make sure there aren’t any co-existing conditions that might complicate things later (such as bone loss, cavities, or periodontal infections).
Once a wisdom tooth stops growing in your early 30s, it will usually stay in the same position unless a neighbouring tooth falls out or is extracted.