“Nature is truly an inspired engineer.”
Thousands of years ago, a mutation that suppressed the formation of wisdom teeth and now accounts for the complications of wisdom teeth among modern humans. The dentition of modern humans has experienced many mutations, so there are general changes in both the jaw and dentition to have become smaller. Many studies have shown that from about 35,000 years ago until 10,000 years ago, tooth size has decreased on average by about one percent every 2000 years.
Over the last 70,000 years, many evidence shows that the importance of large teeth and jaws was reduced as humans developed. 3.8million years ago, the fossil of early hominids showed that the molar teeth are larger and the size of the mandible is tall- well over twice the height of the molar roots inside it. However, our ancestors had four sets of three molars like most of the mammals that help in chewing and grinding food and both jaws are in U-shaped occlusal configuration. Apparently, they have sexually dimorphic changes also. The main causes for a decrease in evolutionary pressure to maintain a large dentition appear to western diet, lifestyle, habits and technology and their development often caused an abrupt change in the way of human dentition had been evolving.
From past few years, the jaw has shortened, the back molars are often crowded in the jaw, with the result being impacted or misaligned. As we know, Wisdom teeth are also called third molars and it is usual for these teeth to become "stuck", wedged in or impacted. There are many complications caused by wisdom tooth like pain, swelling, infection in the back of the mouth, decay, cyst formation, affected adjacent tooth.
So, the small answer is that our teeth are too large, but that our jaws are too small to fit them in. That’s why our wisdom tooth stuck in our jaws bone. But many studies shows that that size of jaw depends on genetics and environment; and it grows longer with heavy use, particularly during childhood, because of the way bone responds to stress. Our teeth don’t fit because they evolved instead to match the longer jaw that would develop in a more challenging strain environment.
Our jaws are too short because we don’t give them the hard work out nature as we can have soft breads and mashed lentils on the one hand, coarse millet and tough vegetables on the other. There are a number of reasons to stuck with wisdom tooth. Even if you are not experiencing any problems with your growing wisdom teeth right now, you may develop issues later. Having these teeth removed can be a preventative measure that saves you from experiencing painful side effects such as sinus, ear, or jaw pain. Most will tell you that if the teeth do come, and there is plenty of room in your mouth for them, then there’s no reason to perform an extraction. You can still practice good oral hygiene with wisdom teeth as long as there’s enough space in the mouth.
