Home About us Editorial board Search Ahead of print Current issue Archives Submit article Instructions Subscribe Contacts Login 
Print this page Email this page Users Online: 2714
 
ORIGINAL ARTICLE
Ahead of Print

Comparative evaluation of the effect of hand file, different nickel-titanium retreatment files, and self-adjusting file system on the incidence of dentinal microcrack formation during the removal of root canal filling material: An in vitro stereomicroscopic study


 Department of Conservative and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pune, Maharashtra, India

Correspondence Address:
Karan Bhargava,
Department of Conservative and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Sant Tukaram Nagar Pimpri, Pune - 411 018, Maharashtra
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/mjdrdypu.mjdrdypu_328_21

Aim: The aim of the study is to evaluate the effect of hand files, rotary nickel-titanium files, and self-adjusting file (SAF) on the incidence of crack formation during retreatment. Materials and Methods: Eighty extracted human mandibular molar teeth with intact mesial roots were selected. They were divided into 8 groups of 10 teeth each; Group 1: Control, Group 2: Obturated control, Group 3: Hand files, Group 4: ProTaper Universal Retreatment, Group 5: Twisted File Adaptive, Group 6: Reciproc Blue, Group 7: XP-endo Finisher R, Group 8: SAF system. All teeth had the coronal portions and distal roots removed by a diamond-coated disc with water cooling, leaving roots approximately 13 mm in length. Except for Group 1, all canals were similarly instrumented and obturated at an apical size of 40.02. Retreatment was performed in each group according to manufacturer's recommendations except for Groups 1 and 2. The roots were sectioned horizontally at 3, 6, and 9 mm from the apex with a low-speed saw. Stereomicroscopic evaluation of the sections was done to assess the presence or absence of defects. Results: The groups that were not retreated (Groups 1 and 2) showed no defects. Hand files showed the least number of defects followed by the SAF. Reciproc Blue showed the most dentinal defects. Conclusion: All NiTi instruments tend to induce various degrees of dentinal damage during retreatment procedures. The SAF and hand instrumentation presented satisfactory results with minimal dentinal microcracks.


Print this article
Search
 Back
 
  Search Pubmed for
 
    -  Newase P
    -  Bhargava K
    -  Paunikar M
    -  Bhawalkar A
    -  Kumar T
    -  Sarode G
 Citation Manager
 Article Access Statistics
 Reader Comments
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed709    
    PDF Downloaded11    

Recommend this journal