Comparing Smear Layer Removal Techniques in Root Canals
Author Information
Author(s): Gonçalves Bruna Fernanda Alionço, Reddy Divya, Machado Ricardo, Soares Júunior Paulo César, Ignácio Sérgio Aparecido, Fernandes Couto Douglas Augusto, Frasquetti Karine Santos, Ditzel Westphalen Vânia Portela, Carneiro Everdan, da Silva Neto Ulisses Xavier
Primary Institution: Pontifical Catholic University of Paraná –PUC/PR, Curitiba, Paraná, Brazil
Hypothesis
There is no difference in the smear layer removal considering the root canal levels and the irrigation systems investigated.
Conclusion
The smear layer removal was only efficient at 5, 8, and 12 mm from the working length with no significant statistical differences among the irrigation techniques.
Supporting Evidence
- All irrigation techniques were unable to promote an effective smear layer removal at 1mm from the working length.
- At 5, 8, and 12mm from the working length, no statistically significant differences were observed among the irrigation techniques.
- Statistically significant differences were only identified after comparing the Perfect Clean System and conventional irrigation at 12mm from the working length.
Takeaway
This study looked at how well different cleaning methods remove a sticky layer inside teeth. It found that all methods worked similarly well at certain depths.
Methodology
Forty extracted human mandibular first premolars were divided into four groups based on the irrigation technique used, and smear layer removal was evaluated using scanning electron microscopy.
Potential Biases
Potential bias due to subjective scoring of smear layer removal by examiners.
Limitations
The study evaluated smear layer removal on only one root canal wall and used a limited sample of single-rooted teeth.
Participant Demographics
Extracted human mandibular first premolars.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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