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Apical transportation with different root canal preparation techniques using edgEEvolve rotary instruments.

Seyyed Mohsen Hasheminia1, Ali Nohekhan2, Saber Khazaei3

  • 1Department of Endodontics, Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.

Dental Research Journal
|November 21, 2022
PubMed
Summary

The single-length technique resulted in less apical transportation than the crown-down technique when using EdgeEvolve rotary instruments for root canal preparation.

Keywords:
Apical foramenendodonticsroot canal preparationroot canal therapy

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Area of Science:

  • Endodontics
  • Dental Materials Science

Background:

  • Apical transportation is a critical factor in endodontic treatment success.
  • EdgeEvolve rotary instruments are utilized in root canal preparation.

Purpose of the Study:

  • To compare apical transportation between single-length and crown-down techniques using EdgeEvolve rotary instruments.
  • To evaluate the preparation time associated with each technique.

Main Methods:

  • An in-vitro study involving 60 mandibular molars with specific curvatures.
  • Random assignment into single-length and crown-down preparation groups using EdgeEvolve rotary instruments.
  • Digital radiography for assessing apical transportation, analyzed with Student's t-test and Shapiro-Wilk test.

Main Results:

  • The single-length group showed significantly less apical transportation (mean SD 4.42°) compared to the crown-down group (mean SD 7.48°).
  • Preparation time was significantly longer in the single-length group (mean SD 135.07 min) than in the crown-down group (mean SD 109.07 min).
  • Both techniques resulted in measurable apical transportation.

Conclusions:

  • Both single-length and crown-down techniques with EdgeEvolve instruments cause apical transportation.
  • The single-length technique appears to minimize apical transportation compared to the crown-down technique in this study.