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Post space cleaning using a new nickel titanium endodontic drill combined with different cleaning regimens
Ivanovic Coniglio1, Elisa Magni, Cecilia Goracci
1Department of Fixed Prosthodontics and Dental Materials, University of Siena, Siena, Italy. conivan@freemail.it
Journal of Endodontics
|December 25, 2007
Summary
This study evaluated post space cleaning after root canal treatment. The MTwo-PF drill and Largo drill showed similar effectiveness, with ultrasonics + EDTA offering superior debris removal and open dentin tubules.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Effective post space preparation is crucial for successful root canal retreatment.
- Gutta-percha and sealer removal can be challenging, impacting the longevity of dental restorations.
Purpose of the Study:
- To compare the efficacy of two different drills (Largo and MTwo-PF) in removing gutta-percha and sealer.
- To evaluate five distinct cleaning regimens for post space debridement.
- To assess the impact of these combinations on debris removal and dentin tubule patency.
Main Methods:
- One hundred extracted premolars were instrumented and obturated.
- Teeth were divided into two groups based on the post space preparation drill used (Largo or MTwo-PF).
- Five cleaning regimens were applied: EDTA, ultrasonics, ultrasonics + EDTA, phosphoric acid, and distilled water. Scanning electron microscopy (SEM) was used for evaluation.
Main Results:
- The Ultrasonics + EDTA, phosphoric acid, and EDTA regimens demonstrated comparable effectiveness in terms of open tubules and debris scores (especially with MTwo-PF drill).
- The Ultrasonics and control (distilled water) groups showed significantly poorer outcomes.
- The MTwo-PF drill performed comparably to the Largo drill for post space cleaning.
Conclusions:
- The MTwo-PF drill is as effective as the Largo drill for post space cleaning.
- The combination of ultrasonics with EDTA irrigation is a highly effective regimen for post space debridement.
- Optimizing cleaning protocols is essential for predictable endodontic outcomes.
