Root resorption. 2: Internal root resorption.

Internal root resorption is classically described as resulting from long standing chronic inflammation in the pulp. The resorption may be transient, where lacunae present within the canal walls, or progressive, where the odontoblasts are destroyed and no predentine can be laid down. The diagnosis of this process and its subsequent treatment is described in this series of eight patients with internal root resorption.