Can Type of Instrumentation and Activation of the Final Irrigant Improve the Obturation Quality in Oval Root Canals? A Push-Out Bond Strength Study

Ajinkya M. Pawar, Anda Kfir, Zvi Metzger, Anuj Bhardwaj, Yeyen Yohana, Dian Agustin Wahjuningrun, Alexander Maniangat Luke, Bhaggyashri A. Pawar

Research output: Contribution to journalArticlepeer-review

Abstract

To appraise the outcome of file systems and activation of the final irrigant on the push-out bond strength of root fillings in oval canals. Single-rooted mandibular premolars (n = 180) with oval canals were divided into three groups (n = 60) for instrumentation: ProTaper Next (PTN), WaveOne (WO), and Self-adjusting File (SAF). The specimens were further divided into subgroups (n = 20) and subjected to final irrigation with activation by EndoActivator or passive ultrasonic irrigation or without activation. Then, the specimens were again subdivided (n = 10) and obturated with gutta-percha and AH Plus (GP-AH) or C-Point with EndoSequence bioceramic sealer (C-EBC). One-millimeter-thick horizontal slices were cut from the apical third of the root, 5 mm from the apex, and subjected to push-out bond strength (BS) testing. Specimens for which SAF was used exhibited higher BS values than those for which PTN or WO was used (p < 0.05). Activation of the final irrigation did not affect the BS of the root fillings. Root fillings made of C-EBC presented a higher BS than those made of GP-AH (p < 0.05). Adhesive failure was more common with specimens instrumented using PTN and WO. Root canals instrumented with SAF, showed the highest bond strength values for both root filling materials. The C-EBC produced significantly higher bond strength values than those of the GP-AH.

Original languageEnglish
Article number59
JournalBiology
Volume11
Issue number1
DOIs
StatePublished - Jan 2022

Keywords

  • AH Plus
  • C-Points
  • EndoActivator
  • EndoSequence bioceramic sealer
  • Instrumentation
  • Oval canals
  • Passive ultrasonic irrigation
  • Push-out bond strength
  • SAF

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