Resorptionsspalt

Resorptionsspalt, or resorption gap, is a term used in dentistry and dental pathology to describe a localized space or boundary created when mineralized dental tissues are resorbed. It refers to the gap that forms between the surface of a tooth and the advancing resorptive front, or the radiolucent area that appears adjacent to the tooth root on imaging during active resorption. The concept is applied to both external and internal resorption processes.

External resorption occurs on the outer surface of the tooth root and can create irregularities along the root contour. In radiographs this may appear as radiolucent areas at the root surface with a distinguishable gap between healthy tissue and the resorbing front. Internal resorption occurs within the pulp chamber or root canal and creates a radiolucent enlargement that can give the impression of a gap or cavity within the tooth structure. In both cases the presence of a resorptionsspalt indicates active tissue loss that may threaten tooth integrity if the underlying cause is not addressed.

Causes are varied and can include inflammation from chronic irritation, traumatic injury, excessive orthodontic forces, pressure from cysts or tumors, metabolic or systemic factors, and restorative or endodontic procedures that irritate the tissues. The progression of the resorption gap depends on the persistence of the etiologic factor and the patient’s regenerative response.

Diagnosis relies on clinical examination and imaging, commonly periapical radiographs or cone-beam computed tomography to assess the size, location, and progression of the resorption gap. Treatment aims to remove the irritant, halt resorption, and preserve tooth structure when possible, with approaches ranging from conservative management to endodontic therapy or extraction in advanced cases.