Radiographic comparison of the extent of orthodontically induced external apical root resorption in vital and root-filled teeth: a systematic review

Abstract

SUMMARY Objective: to critically analyse the available scientific literature radiographically comparing the incidence of orthodontically induced external apical root resorption (OIEARR) in human root-filled and vital teeth. Methods: Several electronic databases (MEDLINE, PubMed, EMBASE, Scopus, Web of Science, CINAHL, and the Cochrane Database of Systematic Reviews and Google Scholar) were searched without limits, with the assistance of a senior librarian specialized in Health Sciences database searches. Human, in vivo studies that radiographically compared root resorption following fixed orthodontic treatment in root-filled and vital teeth were selected for full article review. Additionally, the bibliographies of the finally selected articles were hand searched to identify any relevant publications that were not identified by electronic searches. The lowest levels of evidence accepted for inclusion were case controls or cohort studies. Two authors independently reviewed and extracted data from selected studies. Results: A total of 165 original articles were identified from electronic database searches and 2 from hand searches. Once selection criteria were applied, only four articles met all inclusion criteria, and individual analysis of the selected articles was undertaken. Conclusions: Based on available evidence, root-filled teeth do not appear to be more susceptible to OIEARR than their analogous vital teeth.

Contribution of cone beam computed tomography to the detection of apical root resorption after orthodontic treatment in root-filled and vital teeth

“…21,22 Paradoxically, the inclusion of incisors in clinical studies raises the following question: is the amount of ARR in root-filled teeth following orthodontic treatment due to traumatic injury or to the endodontic treatment itself? It is known that trauma can be subclinical and is not always remembered or mentioned by patients or parents, and this can enhance the bias.…”

“…Recent systematic reviews 21,22 on this topic agree that the available literature is scarce and that rootfilled teeth do not increase the risk of ARR. On the other hand, evidence for less resorption in endodontically treated teeth following orthodontic treatment is not fully conclusive.…”

Potential risks of orthodontic therapy: a critical review and conceptual framework

“…Radiographic studies suggest that, overall, 48–66% of orthodontically treated teeth experience OIRR in the order of 2 mm or less . Anterior teeth are more susceptible to OIRR and 1–5% will experience more than 4 mm of root shortening . Histological studies, on the other hand, suggest that greater than 90% of teeth undergo some extent of OIRR .…”

Comparison of Orthodontic Root Resorption of Root-filled and Vital Teeth Using Micro–computed Tomography

“…The current general opinion is that the root-filled teeth managed with a successful endodontic procedure can be moved orthodontically without the risk of significant root resorption. 26,27 In the literature, studies on orthodontic root resorption of root-filled teeth mostly used 2-dimensional radiographs or histological examination methods. No studies that evaluated resorption of root-filled teeth using the micro-computed tomography (CT) method were found in the literature.…”