Dental OSCE 2025 – 400 Free Practice Questions to Pass the Exam

A "J" shaped apical lesion is commonly associated with a vertical root fracture. This specific shape of the lesion reflects the way infection and inflammation may propagate along the root canal system in the presence of a fracture. The "J" shape usually indicates that there is a discontinuity in the root's integrity, allowing for the accumulation of inflammatory exudate and bacterial products in the periapical area.

In cases of vertical root fractures, the radiographic appearance can be quite distinctive, as the lesion often presents as a radiolucent area that follows the contours of the root and may extend away from the root tip in a manner resembling the letter "J". This radiographic finding can help clinicians differentiate vertical root fractures from other dental conditions such as periapical abscesses or crown fractures, which typically do not exhibit the same distinctive shape. Understanding this association is crucial for diagnosing and planning appropriate intervention for tooth fractures.