Cementum is what covers most of the root of the tooth. It helps to attach the tooth to the bones in your jaw. A cushioning layer called the Periodontal Ligament sits between the cementum and the jawbone. It helps to connect the two. Wisdom Teeth Wisdom teeth or third molars usually appear around the age of 17 - 20.
Wisdom teeth are an asset to the mouth when they are healthy and properly positioned.
Often, however, problems develop that require their removal. Wisdom teeth may grow sideways, get stuck under adjacent teeth, emerge only part way from the gum or remain trapped beneath the gum and bone, develop cysts and cause other kinds of problems. A large proportion of the population does not have enough room for wisdom teeth to assume a normal position. This leaves an opening for bacteria to enter around the tooth and cause an infection. Pain, swelling, jaw stiffness and general illness can result.