What is the origin of dentigerous cyst?

A dentigerous cyst encloses the crown of an unerupted tooth by expansion of its follicle and is attached to the neck of the tooth. 1. It is caused by alteration of reduced enamel epithelium after the completion of amelogenesis, which results in fluid accumulation between epithelium and tooth crown.

Why dentigerous cyst is known as follicular cyst?

Dentigerous cysts, also called follicular cysts, are slow-growing benign and non-inflammatory odontogenic cysts that are thought to be developmental in origin. On imaging, they usually present as a well-defined and unilocular radiolucency surrounding the crown of an unerupted or impacted tooth within the mandible.

Is a dentigerous cyst a true cyst?

Among all the true cysts of the jaws, dentigerous cyst accounts for around 24%,4 which is commonly seen in 2nd–3rd decades of life. In an Israeli study, the incidence of dentigerous cyst was around 45% in pediatric patients.

Is dentigerous cyst cancerous?

While dentigerous cysts are benign, they can lead to complications, such as infection, if left untreated.

How can you tell the difference between a dentigerous cyst?

The true differential diagnosis between hyperplastic dental follicle and dentigerous cyst should be made by radiographic correlation. Most authors suggest that to qualify as a dentigerous cyst, the space between the tooth and the follicle should be >3–4 mm.

Can a Dentigerous cyst be cancerous?

The risk is high when the cyst is in the premolar region. Ameloblastoma or jaw tumor: These are rare tumors that mainly affect the jaw near the molars or wisdom teeth. They arise from cells that form the enamel. If left untreated, the swelling becomes cancerous and may spread to the lungs or lymph nodes.

How is a Dentigerous cyst diagnosed?

How is it diagnosed? Small dentigerous cysts often go unnoticed until you have a dental X-ray. If your dentist notices an unusual spot on your dental X-ray, they may use a CT scan or MRI scan to make sure it’s not another type of cyst, such as a periapical cyst or an aneurysmal bone cyst.

How common is dentigerous cyst?

Mourshed stated that the incidence of dentigerous cyst has been reported as 1.44 in every 100 unerupted teeth, so dentigerous cysts involving the premolars are rare. Dentigerous cysts most commonly occur in the 2nd and 3rd decades of life.

How big is a dentigerous cyst?

A working definition is that a dentigerous cyst exists when the distance between the crown and dental sac is greater than 2.5-3.0 mm 5,6.

How are Dentigerous cysts treated?

Though the usual treatment for a dentigerous cyst is careful enucleation of the cyst together with the removal of unerupted tooth, if eruption of the unerupted tooth is considered feasible, the tooth may be left in place after partial removal of the cyst wall.

How to tell if you have a dentigerous cyst?

Epidemiology 1 By definition, a dentigerous cyst occurs in association with an unerupted tooth 2 Most commonly around permanent mandibular third molars (wisdom teeth) 3 Somewhat less common around permanent maxillary third molars, maxillary cuspids and mandibular second premolars but any tooth may be involved

How does a dentigerous cyst develop in a maxillary cuspid?

Somewhat less common around permanent maxillary third molars, maxillary cuspids and mandibular second premolars but any tooth may be involved Develops from accumulation of fluid (including glycosaminoglycans) between reduced enamel epithelium of dental follicle and crown of unerupted tooth

How is tooth enamel produced in a dentigerous cyst?

Impossible to histologically distinguish inflamed developmental odontogenic dentigerous cyst from those induced by inflammation In normal tooth development, tooth enamel is produced by the enamel organ, an ectodermally derived specialized epithelium

Is there a cyst in the lower third molars?

A dental panoramic radiograph revealed an accidental finding of cystic lesions associated with the lower third molars bilaterally. A review of his orthopantomogram revealed the upper third molar were impacted with a sinus approximation and a well-defined, unicystic radiolucency around the impacted lower third molars bilaterally.