title: Comparative evaluation of canal transportation, centering ability, and remaining dentin thickness between WaveOne and ProTaper rotary by using cone beam computed tomography: An in vitro study.
abstract: OBJECTIVE
  To compare the canal transportation, centering ability, and remaining dentin thickness of WaveOne and ProTaper systems using cone beam computed tomography.
  
  
  METHODS
  Forty extracted human single-rooted premolars were used in the present study. Preinstrumentation scanning of all teeth was taken; canal curvatures were calculated, and the samples were randomly divided into two groups, with twenty samples in each group; one group was instrumented with WaveOne system and the other group with ProTaper rotary system. Postinstrumentation scans were performed, and the two scans were compared to determine canal transportation, centering ability, and remaining dentin thickness at 3 mm, 6 mm, and 9 mm from the root apex.
  
  
  METHODS
  Student's unpaired t-test.
  
  
  RESULTS
  Using Student's unpaired t-test, results were as follows: for canal transportation, Group 1 showed significant difference at 3 mm and 6 mm and insignificant difference at 9 mm while Group 2 showed insignificant difference in all the three regions. For centering ability and remaining dentin thickness, Group 1 showed insignificant difference at 3 mm and 9 mm while significant difference at 6 mm was obtained. When comparison of remaining dentin thickness was done at three levels using two groups WaveOne and ProTaper, there was no significant difference between two groups.
  
  
  CONCLUSIONS
  (1) WaveOne single reciprocation file system respected better canal anatomy better than ProTaper. (2) Individually, centering ability of WaveOne was better at 3 mm, 6 mm, and 9 mm levels. (3) However, ProTaper individually was better centered at 3 mm (apical third) and 9 mm (coronal 3(rd)) levels than 6 mm level (middle third).
authors.affiliation: Department of Conservative Dentistry and Endodontics, Chhattisgarh Dental College and Research Institute, Rajnandgaon, Chhattisgarh, India.
authors.forename: Aditi
authors.initials: A
authors.lastname: Jain
authors.affiliation: Department of Conservative Dentistry and Endodontics, Maitri Dental College and Research Institute, Anjora, Chhattisgarh, India.
authors.forename: Hemant
authors.initials: H
authors.lastname: Asrani
authors.affiliation: Department of Conservative Dentistry and Endodontics, Chhattisgarh Dental College and Research Institute, Rajnandgaon, Chhattisgarh, India.
authors.forename: Abhinav Chand
authors.initials: AC
authors.lastname: Singhal
authors.affiliation: Department of Conservative Dentistry and Endodontics, Chhattisgarh Dental College and Research Institute, Rajnandgaon, Chhattisgarh, India.
authors.forename: Taranjeet Kaur
authors.initials: TK
authors.lastname: Bhatia
authors.affiliation: Department of Conservative Dentistry and Endodontics, Chhattisgarh Dental College and Research Institute, Rajnandgaon, Chhattisgarh, India.
authors.forename: Vaibhav
authors.initials: V
authors.lastname: Sharma
authors.affiliation: Department of Conservative Dentistry and Endodontics, Chhattisgarh Dental College and Research Institute, Rajnandgaon, Chhattisgarh, India.
authors.forename: Pragya
authors.initials: P
authors.lastname: Jaiswal
keywords: Centering ability; ProTaper; WaveOne; dentin thickness and cone beam computed tomography; transportation