Question

Many months after trauma to a primary incisor, the

development of a greyish discolouration in the
crown usually indicates
A. pulp necrosis.
B. pulp canal calcification.
C. external root resorption.
D. internal root resorption.

Answer 1

The development of a greyish discolouration in the crown of a primary incisor usually indicates pulp necrosis, which is the death of the pulp tissue inside the tooth.

Step-by-step explanation:

When a greyish discoloration appears in the crown of a primary incisor many months after trauma, it usually indicates pulp necrosis, which refers to the death of the pulp tissue inside the tooth. This discoloration occurs because blood flow to the pulp is compromised due to the trauma, leading to pulp death and subsequent discoloration. It is important to seek treatment from a dentist to prevent further complications.