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.
| Original language | English |
|---|---|
| Pages (from-to) | 86-91 |
| Number of pages | 6 |
| Journal | EUROPEAN JOURNAL OF PROSTHODONTICS AND RESTORATIVE DENTISTRY |
| Volume | 20 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jun 2012 |
Keywords
- Dental Pulp Cavity
- Finite Element Analysis
- Dental Stress Analysis
- Cuspid
- Computer Simulation
- Humans
- Dental Instruments
- Foreign Bodies
- Equipment Failure
- Tooth Fractures
- Root Canal Preparation
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