Postępowanie w przypadkach resorpcji wewnętrznej korzenia w zębach stałych
The root resorption requires two phases: injury and stimulation. Injury is related to the nonmineralized tissues covering the internal surface of the root canal, the predentin and the odontoblasts layer. Infection is the main stimulation factor in IRR. Teeth are not symptomatic in the early stage of resorption. The origin of the resorbing cells is pulpal, coming from the apical vital part of the pulp [10].
Etiology
Etiology of IRR is quite unclear. Various etiologic factors have been proposed for the loss of predentin, and trauma seems to be the most advocated. In a study including 27 patients, trauma is the most common etiological factor (43%), followed by carious lesions (25%) [11]. Persistent infection of the pulp by bacteria causes the colonization of the walls of the pulp chamber by macrophage-like cells. The attachment and spreading of such cells is the primary prerequisite for initiation of root resorption [12]. It can be concluded that trauma and pulpal inflammation/infection are the major contributory factors in the initiation of internal resorption, although the complete etiologic factors as well as the pathogenesis have not yet been completely elucidated [13].
Prevalence
Internal root resorption is considered rare, but the frequency of internal resorption is not well known. Depending on the accuracy of the means evaluating the pathology, results may strongly vary. Histological studies [...]
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