Radiolucent are cover the pericornal part of the 3rd molar is:
a- Dentigerous cyst
b- Central
Cyst in x- ray:
1. Radiolucent with bone expansion.
2. Radiolucent with bone resorption ***
Cyst growth
Several mechanisms are described for cyst growth, including:
• epithelial proliferation
• internal hydraulic pressure
• bone resorption.