Skip to main content
OpenTrials
Not yet recruiting

NCT Number: NCT07743372

Effect of Preoperative Diclofenac Potassium Dose on Endodontic Pain

The aim of this study is to assess the effect of different doses of diclofenac potassium premedication (100mg vs 50mg) on anesthetic success of 4% articaine buccal infiltration and post-operative pain as compared to placebo in mandibular molars with symptomatic irreversible pulpitis.

Not yet recruiting

Trial opening soon.

Get Notified

Key information

Conditions

Symptomatic Irreversible Pulpitis (SIP)

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

About this study

Patients with moderate-to-severe preoperative pain are selected. Patients receive either a single-dose of diclofenac potassium (100mg), diclofenac potassium (50mg) alone or a placebo tablet as a control. All patients will receive the assigned premedication one hour before single-visit root canal treatment. Anesthetic success of articaine buccal infiltration will be assessed during access and instrumentation. Postoperative endodontic pain is measured at the following time points: 6,12,24,48,72h and 7 days after treatment.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Patients with symptomatic irreversible pulpitis.
  • Patients with moderate to severe pain.
  • Mandibular molars
  • Patients with the ability to understand and use the pain scale

Exclusion criteria

  • Patients allergic to any medication or material to be used in the study.
  • Pregnant and lactating females.
  • Patients taking medications affecting pain perception in the last 12 hours.
  • Patients having more than one symptomatic molar in the same quadrant.
  • Patients with contributory medical history (ASA I or II).

Treatment and study plan

Diclofenac potassium 100mg

Drug

Preoperative single dose of diclofenac potassium 100mg

Diclofenac potassium 50mg

Drug

Preoperative single dose of diclofenac potassium 50mg

Placebo

Drug

Preoperative placebo

Primary outcomes

  1. Anesthetic success of articaine buccal infiltration

    Time frame: During the treatment

    Will be recorded by 11 point NRS consisting of numbers from 0 through 10. 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain" 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain". Success will be defined as no to mild pain.

Secondary outcomes

  1. Postoperative pain at 6 hours

    Time frame: 6 hours

    Will be recorded by 11 point NRS consisting of numbers from 0 through 10. 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain" 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain"

  2. Postoperative pain at 12 hours

    Time frame: 12 hours

    Will be recorded by 11 point NRS consisting of numbers from 0 through 10. 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain" 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain"

  3. Postoperative pain at 24 hours

    Time frame: 24 hours

    Will be recorded by 11 point NRS consisting of numbers from 0 through 10. 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain" 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain"

  4. Postoperative pain at 48 hours

    Time frame: 48 hours

    Will be recorded by 11 point NRS consisting of numbers from 0 through 10. 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain" 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain"

  5. Postoperative pain at 72 hours

    Time frame: 72 hours

    Will be recorded by 11 point NRS consisting of numbers from 0 through 10. 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain" 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain"

  6. Postoperative pain at 7 days

    Time frame: 7 days

    Will be recorded by 11 point NRS consisting of numbers from 0 through 10. 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain" 0: reading represents "no pain" 1-3 : readings represent "mild pain" 4-6 : readings represent "moderate pain" 7-10 : readings represent "severe pain"

Study contacts

Contact information is provided by the study sponsor or research team.

Ameena K Bagunaid

CONTACT

[email protected]

00201017200542

Sponsors and collaborators

Lead sponsor

Cairo University

Other

Registry information

Official study title

Effect of Diclofenac Potassium Premedication Dose on Anesthetic Success and Post-operative Pain in Mandibular Molars With Symptomatic Irreversible Pulpitis: A Randomized Controlled Trial

Important dates

Study start
2026
Primary completion
2027
Study completion
2028
First posted
Aug 3, 2026
Registry last updated
Aug 3, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.