The average person develops and grows a total of 32 permanent adult teeth. However, in many instances, the human jaw is too small to accommodate the four wisdom teeth found at back of the mouth, behind the molars. When this is the case, inadequate space can prevent the wisdom teeth from erupting through into proper position, resulting in what is called an impacted tooth (singular) or teeth (more than one). Impacted teeth can result in pain, and an inability to chew and perform adequate dental hygiene, the latter of which can compound problems.