Dentigerous Cyst

Dentigerous Cyst

Question 1. Write a short note on the radiographic image of a dentigerous cyst.
Or
Write a short note on the radiographic features of dentigerous cyst.
Answer.

The radiographic image according to Thoma.

Dentigerous cyst radiographic features

Central variety dentigerous cyst

Dentigerous Cyst Central Variety 

In it, a crown is enveloped symmetrically. In this instance, pressure is applied to the crown of the tooth, and may push it away from the direction of eruption. In this way, the mandibular third molar may be found at the lower border of the mandible and in the ascending ramus and maxillary canine in the sinus or as far as the floor of the orbit.

Dentigerous Cyst Lateral Type 

Dilaceration of the follicle on one aspect of the crown. The type is commonly seen when an impacted mandibular molar is partially erupted so that its superior aspect is exposed.

Keratocystic Odontogenic Tumors

Dentigerous Cyst Circumferential 

In it, entire tooth appears to be enveloped by cyst. The entire organ around neck of tooth becomes cystic often allowing tooth to erupt through cyst.

Dentigerous cyst X-ray image

Dentigerous Cyst According to Mourshed 

Class 1: A Dentigerous cyst is associated completely with unerupted teeth.

• Dentigerous cyst is associated with unerupted teeth, who fail to erupt due to lack of space in the dental arch.
• Dentigerous cyst is associated with unerupted teeth wthatfail to erupt due to malpositioning of the tooth germ.
• Dentigerous cyst is associated with unerupted supernumerary teeth

Class 2:A  Dentigerous cyst is associated with partially erupted teeth.