Who odontogenic tumor classification?

The 1971 WHO classification contained “odontogenic tumors, odontogenic cysts and allied lesions”. In 1992, such classification was titled “odontogenic tumors”, but still included odontogenic cysts and allied lesions.

WHO classification odontogenic cysts 2005?

Type 1: simple cystic. Type 2: CCOT associated with an odontoma. Type 3: with ameloblastomatous-like proliferation. Type 4: associated with other benign odontogenic tumors other than odontoma.

Which cyst is most common?

Periapical cysts are the most commonly reported odontogenic cysts. Per Johnson et al., periapical cysts comprise approximately 60% of all odontogenic cysts. They are more commonly found in the maxilla about 60% of the time. [3]

What is non-odontogenic cyst?

Non-odontogenic cysts are usually discovered during a routine examination. These lesions arise from the non-odontogenic (non-tooth forming) tissue. By definition, the cysts are lined by epithelium. Cysts within the oral cavity vary in their clinical appearance, incidence, histology, behavior, and management.

WHO classification odontogenic cysts?

Calcified cystic odontogenic tumor is now classified as a ‘calcifying odontogenic cyst;’ and keratocystic odontogenic tumor is now listed as ‘odontogenic keratocyst (OKC)’ in the 2017 classification of developmental odontogenic cysts.

What is a Dentigerous cyst?

Dentigerous cyst is a type of odontogenic cysts and generally occurs in the ages of twenties or thirties. Dentigerous cyst always includes a tooth which cannot complete the eruption process and occurs around the crown by the fluid accumulation between the layers of enamel organ.

WHO classification odontogenic tumors 2017?

WHO 2017 classification divided ameloblastoma into four categories; conventional, extraosseous / peripheral, unicystic, and metastasizing ameloblastoma.

What does odontogenic cyst mean?

Odontogenic cysts are epithelial-lined pathologic cavities and surrounded by fibrous connective tissue that originate from odontogenic tissues that occur in tooth-bearing regions of maxilla and mandible. Cystic conditions of the jaw cause bony destruction and may cause resorption or displacement of adjacent teeth.

What does odontogenic mean?

Medical Definition of odontogenic

1 : forming or capable of forming teeth odontogenic tissues. 2 : containing or arising from odontogenic tissues odontogenic tumors.

What is an OKC cyst?

Odontogenic keratocyst (OKC) is the cyst arising from the cell rests of dental lamina. It can occur anywhere in the jaw, but commonly seen in the posterior part of the mandible. Radiographically, most OKCs are unilocular when presented at the periapex and can be mistaken for radicular or lateral periodontal cyst.

What is a primordial cyst?

Primordial cysts are infrequent cystic mandibular lesions, which are thought to result from degeneration of dental follicles. No tooth is therefore present, and the cyst is a well defined, small and static lesion, most commonly located posteriorly in the region of the third molar or angle of the mandible.

What is the most common odontogenic tumor?

Odontoma. This benign tumor is the most common odontogenic tumor. Odontomas often have no symptoms, but they may interfere with tooth development or eruption. Odontomas are made up of dental tissue that grows around a tooth in the jaw.

What is satellite cyst?

These cysts arise earlier in patients with NBCCS than in those who are unaffected by the syndrome. The epithelium can show budding of the basal layer into the underlying connective tissue with formation of detached microcysts, which have been termed daughter or satellite cysts7.

Why is OKC called a primordial cyst?

The “primordial cyst”

The concept of “Primordial cyst” was first mentioned by Robinson[7] in 1945 because the cysts were believed to have a more primordial origin as they arose from remnants of the dental lamina or the enamel organs before enamel formation has had taken place.

What is a Globulomaxillary cyst?

The globulomaxillary cyst is a cyst that appears between a maxillary lateral incisor and the adjacent canine. It exhibits as an “inverted pear-shaped radiolucency” on radiographs, or X-ray films. The globulomaxillary cyst often causes the roots of adjacent teeth to diverge.

What is Gorlin Goltz syndrome?

Gorlin-Goltz syndrome is an uncommon autosomal dominant inherited disorder, which is characterized by multiple odontogenic Keratocysts and basal cell carcinomas, skeletal, dental, ophthalmic, and neurological abnormalities, intracranial ectopic calcifications of the falx cerebri, and facial dysmorphism.

What is Orthokeratinized odontogenic cyst?

Orthokeratinized Odontogenic Cyst (OOC) is a rare, developmental odontogenic cyst which was considered in the past to be a variant of Odontogenic keratocyst (OKC) later renamed as keratocystic odontogenic tumor (KCOT).

What is Pindborg tumor?

Calcifying epithelial odontogenic tumor, also known as Pindborg tumor, is a rare, benign, locally aggressive tumor that occurs in the same age range and in the same jaw sites as ameloblastoma. There is no gender predilection. A propensity for the mandibular molar region versus the premolar maxilla has been reported.

How is Gorlin syndrome diagnosed?

To diagnose Gorlin syndrome, your provider asks about your symptoms and performs a physical exam. Your healthcare provider may also give you a blood test that looks for specific gene mutations. Some imaging tests check for symptoms of Gorlin syndrome, such as jaw cysts or skeletal problems.

What are the symptoms of Gorlin syndrome?

What are the symptoms of Gorlin syndrome?
  • Larger-than-average head.
  • Unusual facial features, such as a prominent forehead.
  • Bone abnormalities in the spine, ribs or skull.
  • Eye problems.
  • Skin tags.
  • Small indentations on the hands and feet (pits)

Which syndrome has multiple cysts of the jaws?

Gorlin-Goltz syndrome, also known as Nevoid Basal Cell Carcinoma Syndrome (NBCCS), is a multisystem disorder which was first described by Gorlin and Goltz. [1] The incidence of this disorder is estimated to be 1 in 50,000–1,50,000 in the general population, varying by region.