The Impact Of Fractured Endodontic File Removal On Vertical Root Fracture Resistance: Three-Dimensional Finite Element Analysis
EUROPEAN JOURNAL OF PROSTHODONTICS AND RESTORATIVE DENTISTRY(2012)
Abstract
This study investigated by means of finite element analysis the influence of fractured file removal on root fracture resistance in an endodontically-treated canine. A 4mm fragment of an endodontic file was deliberately fractured in the apical third of an upper canine root and removed by ultrasonic tips. Micro-computed tomography scans were carried out before and after fractured file removal on the same tooth. Two 3D-FE models (before and after file removal) were subjected to 100N loading. Results indicate that the fractured file removal increased von Mises stresses by 55%. Peak stresses were located around the root filling/dentine interface prior to file removal. Following file removal, peak stresses were concentrated at the buccal root surface/bone interface that might initiate vertical root fracture buccolingually.
MoreTranslated text
Key words
Vertical root fracture, stress analysis, finite element analysis
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined