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That odontogenic epithelium is critical in normal tooth development. However, epithelial rests may be the origin for the cyst lining later. Not all oral cysts are odontogenic cysts. For example, mucous cyst of the oral mucosa and nasolabial duct cyst are not of odontogenic origin.
Relative incidence of odontogenic cysts. [14] Periapical cysts are labeled at left. Periapical cysts comprise approximately 75% of the types of cysts found in the oral region. The ratio of individuals diagnosed with periapical cysts is 3:2 male to female, as well as individuals between 20 and 60 years old. Periapical cysts occur worldwide.
Calcifying odontogenic cyst (COC) is a rare developmental lesion that comes from odontogenic epithelium. [2] It is also known as a calcifying cystic odontogenic tumor , which is a proliferation of odontogenic epithelium and scattered nest of ghost cells and calcifications that may form the lining of a cyst , or present as a solid mass.
A glandular odontogenic cyst (GOC) is a rare and usually benign odontogenic cyst developed at the odontogenic epithelium of the mandible or maxilla. [2] [8] [9] [10] Originally, the cyst was labeled as "sialo-odontogenic cyst" in 1987. [7] However, the World Health Organization (WHO) decided to adopt the medical expression "glandular ...
Relative incidence of odontogenic cysts. [1] Dentigerous cyst is labeled at top right. A dentigerous cyst, also known as a follicular cyst, is an epithelial-lined developmental cyst formed by accumulation of fluid between the reduced enamel epithelium and the crown of an unerupted tooth.
Botryoid odontogenic cyst (BOC) is a type of developmental odontogenic cyst that is extremely rare. [1] It is thought to be a lateral periodontal cyst (LPC) variant with a higher risk of recurrence. [2] Weathers and Waldron coined the term BOC in 1973. [3] Adults over the age of 50 are the most affected. [4]
Primordial cysts most commonly arise in the area of mandibular third molars. Under microscopes , the cyst looks like an odontogenic keratocyst (also called a Keratocyst odontogenic tumor) whereby the lesions displays a parakeratinized epithelium with palisading basal epithelial cells.
It is considered that these cell rests proliferate to form epithelial lining of various odontogenic cysts such as radicular cyst under the influence of various stimuli. They are named after Louis-Charles Malassez (1842–1909) who described them.