Wisdom teeth are called the 8th molars located at the back of the jaw. Normally, wisdom teeth will begin to grow in adulthood, from 17 to 25 years old with 4 teeth located at the back corners of the jaw. However, in reality, there are many cases where wisdom teeth do not begin to grow until the age of 40. So at the age of 40, should wisdom teeth be extracted or will there be any complications?