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

Comparison of Post-endodontic Pain Using Reciproc and Oneshape Rotary Instrumentation Systems: A Randomized Clinical Trial

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02621034
Enrollment
150
Registered
2015-12-03
Start date
2015-12-31
Completion date
2016-03-31
Last updated
2016-06-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pain

Keywords

Root canal treatment, pain, endodontic instruments

Brief summary

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

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.

Interventions

PROCEDUREControl

K-file hand instrumentation

PROCEDUREReciproc

reciprocating rotary instrument

PROCEDUREOne shape

full rotation protocol

Sponsors

Zahedan University of Medical Sciences
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)

Eligibility

Sex/Gender
ALL
Age
20 Years to 50 Years
Healthy volunteers
Yes

Inclusion criteria

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

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

Design outcomes

Primary

MeasureTime frameDescription
Post-operative Pain on the Visual Anlogue Scale (VAS) at the 6-hour Post-operative Interval6 hoursThe 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).
Comparison of Post-operative Pain in the Reciproc and Oneshape Groups Through Out the Intervals72 hours
Comparison of Post-operative Pain Between the Three Groups at the 72-hour Interval72 hours

Countries

Iran

Participant flow

Participants by arm

ArmCount
Control
K-file hand instrumentation Control: K-file hand instrumentation
50
Reciproc
rotary reciprocating protocol Reciproc: reciprocating rotary instrument
50
One Shape
one shape continuous rotation protocol One shape: full rotation protocol
50
Total150

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyLost to Follow-up325

Baseline characteristics

CharacteristicReciprocOne ShapeControlTotal
Age, Continuous33.2 years
STANDARD_DEVIATION 13.7
30.2 years
STANDARD_DEVIATION 10.1
31.7 years
STANDARD_DEVIATION 13.4
31.7 years
STANDARD_DEVIATION 12.3
Sex: Female, Male
Female
31 Participants34 Participants27 Participants92 Participants
Sex: Female, Male
Male
19 Participants16 Participants23 Participants58 Participants
Tooth type
Mandibular molars
39 participants30 participants25 participants94 participants
Tooth type
Maxillary molars
11 participants20 participants25 participants56 participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
0 / 00 / 00 / 0
serious
Total, serious adverse events
0 / 00 / 00 / 0

Outcome results

Primary

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

Time frame: 72 hours

ArmMeasureValue (MEAN)Dispersion
ControlComparison of Post-operative Pain Between the Three Groups at the 72-hour Interval0.72 units on a scaleStandard Deviation 0.19
ReciprocComparison of Post-operative Pain Between the Three Groups at the 72-hour Interval0.46 units on a scaleStandard Deviation 0.26
One ShapeComparison of Post-operative Pain Between the Three Groups at the 72-hour Interval0.34 units on a scaleStandard Deviation 0.15
Primary

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

Time frame: 72 hours

ArmMeasureValue (MEAN)Dispersion
ControlComparison of Post-operative Pain in the Reciproc and Oneshape Groups Through Out the Intervals0.46 units on a scaleStandard Deviation 0.26
ReciprocComparison of Post-operative Pain in the Reciproc and Oneshape Groups Through Out the Intervals0.34 units on a scaleStandard Deviation 0.15
Primary

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

ArmMeasureValue (MEAN)Dispersion
ControlPost-operative Pain on the Visual Anlogue Scale (VAS) at the 6-hour Post-operative Interval5 units on a scaleStandard Deviation 2.8
ReciprocPost-operative Pain on the Visual Anlogue Scale (VAS) at the 6-hour Post-operative Interval3.2 units on a scaleStandard Deviation 3.1
One ShapePost-operative Pain on the Visual Anlogue Scale (VAS) at the 6-hour Post-operative Interval3.5 units on a scaleStandard Deviation 2.9

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026