Where does bone resorption typically occur in pulp necrosis of a deciduous molar?

Bone resorption in cases of pulp necrosis of a deciduous molar primarily occurs at the bifurcation. This phenomenon is due to the inflammatory processes that arise from the necrotic pulp, which can lead to the formation of a periapical lesion. The bifurcation area, being a complex anatomical structure where the roots diverge, is particularly susceptible to inflammation and the consequent bone loss that is characteristic of pulpitis and pulp necrosis.

As the infection progresses, it creates a localized destruction of the bone surrounding the root area. In deciduous molars, the bone loss is often more pronounced at the bifurcation due to the proximity to the gingival tissue and the potential for periodontal involvement, making it a critical area for monitoring the effects of pulp necrosis. Other areas, like the root apex, while they can also be involved, may not show the same degree of localized resorption as noted at the bifurcation. The involvement of buccal or lingual sides, while possible, is less specific compared to the clear association of bone resorption at the bifurcation in the context of deciduous molar pulp necrosis.