In vitro evaluation of root canal wall cleanliness in primary molars after preparation with Self-Adjusting-File (SAF) or Mtwo NiTi-instruments and final irrigation

Authors

  • S Baxter Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Göttingen
  • K-M Phan Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Göttingen
  • M Hülsmann Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Göttingen

DOI:

https://doi.org/10.23804/ejpd.2021.22.01.02

Keywords:

Primary teeth, Smear layer, Debris, Cleanliness, SAF, Mtwo-

Abstract

AIM: In vitro evaluation of cleanliness of root canal walls of primary molars after preparation with the Self-Adjusting-File and Mtwo-instruments and final irrigation with citric acid and sodium hypochlorite. MATERIALS: s Study Design: In 23 matched pairs, teeth were prepared either with SAF or with Mtwo NiTi-instruments, and final irrigation was performed with 2 mL citric acid and 4 mL NaOCl. Roots were split longitudinally, SEM-images were taken, and smear layer was evaluated by two blinded observers using a four-grade score. Statistical evaluation was performed with Mann-Whitney-U-Test and Wilcoxon Signed Rank Test (P<0.05). CONCLUSION: None of the two instruments was superior concerning cleanliness in root canals of primary molars. Both show good cleaning ability when using an irrigation protocol with citric acid and sodium hypochlorite.