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CompletedNCT02621034Updated Jun 6, 2016Results posted

Comparative Evaluation of Post-endodontic Pain Using Two Rotary Instrumentation Systems

An interventional study of Control and Reciproc in Pain, sponsored by Zahedan University of Medical Sciences. Completed at 1 site in Iran, Islamic Republic of. Open to participants aged 20 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-06-06.

Sponsored by Zahedan University of Medical Sciences · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
150
Allocation
Randomized
Ages
20 Years to 50 Years
Sex
All
01

Study summary

In this study the investigators aim to compare the post-operative pain using two single-file endodontic rotary systems : Reciproc and One shape.

Read the detailed description

Comparison of the post operative pain with two rotary systems including Reciproc and One shape.

Confounding factors were neutralized and the rotary systems were compared.

02

Conditions studied

  • Pain

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Keywords

  • Root canal treatment
  • pain
  • endodontic instruments
03

In context

Pain

10,054 studies on the registry are indexed under Pain; 1,649 are open to participants now.

This study's enrollment of 150 is above the median of 66 across 8,493 interventional studies indexed under Pain.

Browse Pain studies →

Lead sponsor

Zahedan University of Medical Sciences is the lead sponsor of 15 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Systematically healthy patients
  • First or second molars with irreversible pulpitis without periapical pathosis.
  • Single visit endodontic treatment

Exclusion criteria

Exclusion Criteria:

  • Root canal retreatment
  • Pregnancy
  • The presence of a difficult root canal anatomy
  • Internal or external resorption
  • Teeth with open apices
  • Any accident of complication occurred during treatment
  • Presence of periapical lesion, abscess or sinus tract
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
150 participants (actual)

Study arms

  • Experimental
    Control

    K-file hand instrumentation

    Procedure: Control

  • Experimental
    Reciproc

    rotary reciprocating protocol

    Procedure: Reciproc

  • Experimental
    One shape

    one shape continuous rotation protocol

    Procedure: One shape

Interventions

  • ProcedureControl

    K-file hand instrumentation

  • ProcedureReciproc

    reciprocating rotary instrument

  • ProcedureOne shape

    full rotation protocol

06

What researchers measure

Primary outcomes

  1. Post-operative Pain on the Visual Anlogue Scale (VAS) at the 6-hour Post-operative Interval

    The pain VAS is a continuous scale comprised of a horizontal (HVAS) or vertical (VVAS) line, usually 10 centimeters (100 mm) in length, For pain intensity, the scale is most commonly anchored by "no pain" (score of 0) and "pain as bad as it could be" or "worst imaginable pain" (score of 10).

    Time frame: 6 hours

  2. Comparison of Post-operative Pain in the Reciproc and Oneshape Groups Through Out the Intervals

    Time frame: 72 hours

  3. Comparison of Post-operative Pain Between the Three Groups at the 72-hour Interval

    Time frame: 72 hours

07

Results

Posted Jun 6, 2016

Participant flow

Participant flow — Overall Study
Milestonek FileReciprocOne Shape
Started535255
Completed505050
Not completed325
Withdrew: Lost to follow-up325

Outcome measures

PrimaryPost-operative Pain on the Visual Anlogue Scale (VAS) at the 6-hour Post-operative Interval

The pain VAS is a continuous scale comprised of a horizontal (HVAS) or vertical (VVAS) line, usually 10 centimeters (100 mm) in length, For pain intensity, the scale is most commonly anchored by "no pain" (score of 0) and "pain as bad as it could be" or "worst imaginable pain" (score of 10).

Time frame:
6 hours
Reported as:
Mean · units on a scale
Post-operative Pain on the Visual Anlogue Scale (VAS) at the 6-hour Post-operative Interval
units on a scaleControlReciprocOne Shape
Post-operative Pain on the Visual Anlogue Scale (VAS) at the 6-hour Post-operative Interval5 ± 2.83.2 ± 3.13.5 ± 2.9
PrimaryComparison of Post-operative Pain in the Reciproc and Oneshape Groups Through Out the Intervals
Time frame:
72 hours
Reported as:
Mean · units on a scale
Comparison of Post-operative Pain in the Reciproc and Oneshape Groups Through Out the Intervals
units on a scaleReciprocOne Shape
Comparison of Post-operative Pain in the Reciproc and Oneshape Groups Through Out the Intervals0.46 ± 0.260.34 ± 0.15
PrimaryComparison of Post-operative Pain Between the Three Groups at the 72-hour Interval
Time frame:
72 hours
Reported as:
Mean · units on a scale
Comparison of Post-operative Pain Between the Three Groups at the 72-hour Interval
units on a scaleControlReciprocOne Shape
Comparison of Post-operative Pain Between the Three Groups at the 72-hour Interval0.72 ± 0.190.46 ± 0.260.34 ± 0.15

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Control———
Reciproc———
One Shape———

Baseline characteristics

Age, Continuous
Age, Continuous(years)ControlReciprocOne ShapeTotal
Mean31.7 ± 13.433.2 ± 13.730.2 ± 10.131.7 ± 12.3
Sex: Female, Male
Sex: Female, Male(Participants)ControlReciprocOne ShapeTotal
Female27313492
Male23191658
Tooth type
Tooth type(participants)ControlReciprocOne ShapeTotal
Maxillary molars25112056
Mandibular molars25393094
08

Study locations

1 site
  • Zahedan Dental School
    Zahedan, Iran, Islamic Republic of
09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Dec 2015, a primary completion of Feb 2016 and a completion of Mar 2016. It does not say whether these dates are actual or estimated.

Results were first posted in Jun 2016, 4 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 29, 2015
First posted
Dec 3, 2015
Start
Dec 2015
Primary completionActual
Feb 2016
CompletionActual
Mar 2016
Results first posted
Jun 6, 2016
Last update
Jun 6, 2016
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 6, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02621034
Lead sponsor
Zahedan University of Medical Sciences
Responsible party
Sponsor
First posted
Dec 3, 2015
Start date
Dec 2015
Primary completion
Feb 2016
Completion
Mar 2016
Results posted
Jun 6, 2016
Last update
Jun 6, 2016

Study contacts

Eshagh Ali Saberi, DDS,MS
study director · Head of the department of Endodontics, Zahedan university of medical sciences

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2016. You cannot join it, but the record below documents what was studied.

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