Primordial Cyst

ODONTOGENIC KERATOCYST and (PRIMORDIAL CYST) Keratocyst or primordial is a cyst with keratinized epithelium. A primordial cyst forms from the tooth bud and forms instead of a tooth.

Jaw cysts,A cyst is a pathological epithelial lined cavity that fills with fluid or soft material and usually grows from internal pressure generated by fluid being drawn into the cavity from (hydrostatic pressure). The bones of the jaws, the and, are the with the highest prevalence of in the human body. This is due to the abundant amount of remnants that can be left in the bones of the jaws. The of is formed from (the precursor germ layer to skin and ), and so remnants of epithelium can be left in the bone during (tooth development).

The bones of the jaws develop from processes which fuse together, and ectodermal tissue may be trapped along the lines of this fusion. This 'resting' epithelium (also termed cell rests) is usually dormant or undergoes, but, when stimulated, may form a cyst. The reasons why resting epithelium may proliferate and undergo cystic transformation are generally unknown, but is thought to be a major factor. The high prevalence of and that occur in the bones of the jaws is also significant to explain why cysts are more common at these sites.Cysts that arise from tissue(s) that would normally develop into teeth are referred to as. Other cysts of the jaws are termed non-odontogenic cysts. Non-odontogenic cysts form from tissues other than those involved in tooth development, and consequently may contain structures such as epithelium from the nose.

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As the cyst grows from it causes the bone around it to resorb, and may cause movement of teeth or other vital structures such as nerves and blood vessels, or resorb the roots of teeth. Most cysts do not cause any symptoms, and are discovered on routine.Some cysts may not require any treatment, but if treatment is required, it usually involves some minor surgery to partially or completely remove the cyst in a one or two-stage procedure. Main article:Odontogenic cysts have histologic origins in the cells of the dental structures. Some are inflammatory while others are developmental. is the most common (up to two thirds of all cysts of the jaws). This cyst originated from a reaction to., the second most prevalent cyst, is associated with the crown of non-erupted tooth.

This may be associated with the. which appears in the bifurcation region of the first in the second half of the first decade of life.; a small cyst in the gingiva as a tooth erupts, forming from the degenerating dental follicle.; previous thought to be a unique entity.