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Clinical Trials/NCT07676409
NCT07676409Not yet recruitingNot Applicable

Effect of Two Intracanal Cryotherapy Irrigation Protocols on Postoperative Endodontic Pain in Patients With Symptomatic Irreversible Pulpitis and Apical Periodontitis in Mandibular Molars: A Randomized Clinical Trial.

Cairo University0 sites45 target enrollmentStarted: June 15, 2026Last updated:
Conditions

Trial Snapshot

Phase
Not Applicable
Status
Not yet recruiting
Enrollment
45
Primary Endpoint
Incidence and severity of postoperative pain

Study Overview

Brief Summary

The aim of this study is to evaluate the effect of intracanal cryotreated (2-3°C) 2.5% sodium hypochlorite and Saline used throughout the procedure, compared with a room-temperature irrigation protocol with a final cryotreated saline flush or an entirely room temperature irrigation protocol, on postoperative pain in patients with symptomatic irreversible pulpitis and symptomatic apical periodontitis in mandibular molars.

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel
Primary Purpose
Other
Masking
Single (Outcomes Assessor)

Eligibility Criteria

Ages
20 Years to 40 Years (Adult)
Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Age between 20-40 years old.
  • Systemically healthy patients (ASA I or II).
  • Mature Mandibular molar teeth with :
  • Preoperative sharp pain and symptomatic apical periodontitis marked on NRS scale by reading not less than
  • Absence or slight widening in the periodontal ligament (PDL).
  • Vital response of pulp tissue to cold pulp tester and (ethyl chloride spray).
  • Positive response to percussion test.
  • Restorable teeth.
  • Ability to complete the endodontic treatment in a single visit.
  • Positive patient acceptance for participation in the trial. -----------------------------------------------------------------

Exclusion Criteria

  • Medically compromised patients (ASA III or IV)
  • Patients who used NSAIDs in the 24 hours before treatment.
  • Patients with two or more adjacent teeth requiring endodontic treatment.
  • Pregnant women.
  • Patients reporting bruxism or clenching.
  • Teeth associated with :
  • Acute periapical abscess and/or swelling.
  • Greater than grade I mobility or pocket depth greater than 5mm.
  • Non-restorable teeth.
  • Immature Apex.
  • Radiographic evidence of external or internal root resorption, vertical root fracture, perforation, calcification.

Outcomes

Primary Outcomes

Incidence and severity of postoperative pain

Time Frame: From enrollment to the end of treatment at 3 days

Using an 11-point Numeric Rating Scale (NRS) where the endpoints are the extremes of no pain and worst pain. Pain intensity was assigned into one of four pain categories: none (0); Mild (1-3); Moderate (4-6) and severe (7-10). Postoperative pain levels will be documented by the patients at 6, 12, 24, 48 and 72 hours postoperatively

Secondary Outcomes

  • Incidence and Number of analgesic intake(From enrollment to the end of treatment at 3 days)

Investigators

Sponsor Class
Other
Responsible Party
Principal Investigator
Principal Investigator

Ahmed Mahmoud Mohamed

Dentist

Cairo University

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