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Inflammatory resorption caused by an adjacent necrotic tooth.

¹School of Dentistry, Loma Linda University, CA.

Journal of Endodontics

|July 1, 1990

Summary

A failing root canal treatment in one tooth can cause inflammatory resorption and pulpal necrosis in an adjacent tooth. This case highlights a previously unreported cause of dental inflammatory lesions.

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Area of Science:

Endodontology
Oral Pathology

Background:

Periapical lesions and perforating resorption defects pose diagnostic challenges in endodontics.
The etiology of inflammatory periapical lesions is often attributed to the involved tooth's pulpal status.

Observation:

A large periapical lesion with perforating resorption on a cuspid was treated endodontically, with no radiographic improvement after 18 months.
Significant healing occurred only after extraction of a neighboring tooth with previous root canal therapy.

Findings:

The primary cause of the periapical lesion and resorptive defect was determined to be failing root canal therapy of the adjacent tooth.
This case presents a novel finding: inflammatory resorption resulting from the pulpal necrosis of a neighboring tooth.

Implications:

Clinicians should consider adjacent teeth with prior endodontic treatment as potential sources of inflammatory periapical pathology.
This finding expands the understanding of inflammatory resorption mechanisms in endodontology.

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