Basis principes

Relative radiodensity and internal structure of the lesion
The relative radiolucency or radiopacity of the lesion compared to the surrounding bone.

Site and Size of the lesion
The site and the size of a lesion in relation to the adjacent teeth and anatomic structures provide significant information about the type of the underlying condition.

Shape of the lesion
The shape of the lesion can provide information about the irregularity of growth of a tumor.

Outline of the lesion
Τhe outline of the lesion provides information about the nature of the lesion.

Effects on surrounding bone
Features that should be examined are alterations in the size and distribution of trabeculation, evidence of loss of lamina dura.

Effects on the bony cortex
The type of effects on the bony cortex can provide information about the nature of the lesion.

Effects on adjacent teeth
There may be evidence of: root resorption, displacement, delayed eruption, loss of lamina dura.

Periosteal reactions
The type of periosteal reaction to the lesion can provide information about the nature of the lesion.