A cyst is a sac of tissue that has either fluid or soft material inside it. Cysts can form in a wide range of tissues including in the face and mouth (including the jaws). Some can form next to or around teeth, which are called dental cysts.

Odontogenic cysts

Radicular cysts are inflammatory odontogenic cysts that arise from infection or trauma and are also known as periapical cysts. They are the commonest jaw-occurring cysts and present mainly between the third and fifth decades of life.

These cysts arise as the ultimate result in the pathway of tooth inflammation and necrosis of the pulp. On radiographic imaging, these lesions measure less than one centimeter in diameter and are lucent in the periapical area with a fairly round shape.

These cysts tend to be found deep in the areas where the epithelial ridges and walls of embryogenesis, as well the fissures and clefts, once were.

The majority of jaw cysts are termed odontogenic cysts, because they develop from dental tissue epithelium and as a result are delineated from non-odontogenic cysts (i.e. those with epithelium that is non-dental in origin). Odontogenic cysts may be further subcategorized based on their pathogenesis into inflammatory or developmental cysts.

A dental cyst is a sac of tissue in your gums that has some kind of foreign body stuck inside it. It is a form of inflammation that develops after the dental pulp dies off. It grows as the old pulp material starts to wear out. As the cyst develops, the bone structure around the tooth will feel an extreme amount of pressure. It could eat away from the bone and weaken it. This requires a proper treatment as soon as possible.