What radiographic sign is commonly associated with internal root resorption?

What radiographic sign is commonly associated with internal root resorption?

• A. Irregular root outline
• B. Symmetrical enlargement of the pulp chamber with a radiolucent defect within the root canal
• C. Widened periodontal ligament space only
• D. Lateral bone loss near apex

Answer: (B)

Internal root resorption shows up as a symmetrical enlargement of the pulp space with a radiolucent defect that is centered within the root canal. This resorption occurs from inside the canal outward, so the canal walls appear widened while the external root outline remains relatively intact in the early stages. This contrasts with external resorption, which produces irregularities on the outer surface of the root. A widened periodontal ligament space or lateral bone loss near the apex are not specific signs of internal resorption and point to other issues. So the radiographic hallmark is symmetry: enlargement of the pulp space with a radiolucent area inside the canal.

Internal root resorption shows up as a symmetrical enlargement of the pulp space with a radiolucent defect that is centered within the root canal. This resorption occurs from inside the canal outward, so the canal walls appear widened while the external root outline remains relatively intact in the early stages. This contrasts with external resorption, which produces irregularities on the outer surface of the root. A widened periodontal ligament space or lateral bone loss near the apex are not specific signs of internal resorption and point to other issues. So the radiographic hallmark is symmetry: enlargement of the pulp space with a radiolucent area inside the canal.