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Effect of different final irrigation protocols on pulp tissue dissolution from an isthmus model
Alfredo Iandolo1, Massimo Amato1, Dina Abdellatif2
1Department of Medicine and Surgery, University of Salerno, Salerno, Italy.
Summary
Different final irrigation protocols were tested for pulp tissue dissolution in root canal isthmuses. Heating combined with sonic or ultrasonic activation showed significantly higher dissolution compared to other methods.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- The complex anatomy of root canal systems, particularly isthmuses, presents challenges in complete disinfection.
- Effective removal of pulp tissue remnants from isthmuses is crucial for successful endodontic treatment.
Purpose of the Study:
- To compare the efficacy of various final irrigation protocols in dissolving pulp tissue within the isthmus of a two-rooted maxillary premolar.
Main Methods:
- Pulp tissue was introduced into the observed isthmus of prepared premolars.
- Six irrigation groups were evaluated: syringe/needle, subsonic, sonic, ultrasonic, heated sonic, and heated ultrasonic activation.
- Pulp tissue area was quantified via macrophotography before and after treatment.
Main Results:
- The syringe and needle group demonstrated the least pulp tissue dissolution.
- Subsonic irrigation showed limited efficacy.
- Significantly greater pulp tissue dissolution was achieved with protocols involving heating combined with sonic or ultrasonic activation.
Conclusions:
- Final irrigation protocols incorporating heating significantly enhance pulp tissue dissolution in root canal isthmuses.
- Heated sonic and ultrasonic activation represent more effective methods for isthmus disinfection compared to conventional or non-heated activation techniques.
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