CClinicalTrials.gg
Not yet recruitingNCT07427420Updated Feb 23, 2026

Postoperative Pain After Pulpectomy in Primary Molars

An interventional study of Fanta AF F one rotary files 20 taper 4 and Manual files (k files ,Mani, Inc., Japan). in Irreversible Pulpitis, sponsored by Cairo University. Not yet recruiting at 1 site in Egypt. Open to participants aged 4 Years to 6 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-02-23.

Sponsored by Cairo University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
4 Years to 6 Years
Sex
All
01

Study summary

To compare the post operative pain in pulpectomy of primary molars using a single rotary file system versus conventional manual instrumentation, through a Randomized Clinical Trial.

The main question it aims to answer is:

Is there a difference in post operative pain when using single rotary file system versus manual instrumentation in pulpectomy of primary molars?

Read the detailed description

Endodontic procedures remain among the most commonly performed treatments following the diagnosis of pulpal inflammation or pathology. However, in primary teeth, endodontic treatment poses substantial difficulties owing to its complex anatomy and canal systems

  • Maintaining a primary tooth after successful root canal treatment is highly beneficial, as the preserved tooth serves as the most effective natural spacemaintainer
  • In cases of irreversible pulpitis, endodontic therapy remains the most common and frequently performed procedure to alleviate pain
  • Pulpectomy in primary molars is a critical treatment modality in pediatric dentistry when the pulp is irreversibly inflamed. Traditional instrumentation for pulpectomy often relies on manual files (e.g., stainless steel K-files), which can be time-consuming, technique sensitive, and may pose challenges due to the complex and delicate root anatomy of primary teeth
  • Rotary nickel-titanium (NiTi) systems have potential advantages: more efficient preparation, reduced chair-time, and possibly better patient cooperation. Indeed, study has found that rotary instrumentation significantly reduces both the instrumentation and obturation time and is associated with lower postoperative pain
  • Postoperative pain is one way to measure the success of endodontic treatment
02

Conditions studied

  • Irreversible Pulpitis

Keywords

  • single rotary file
  • pulpectomy
  • primary molars
  • manual instrumentation
03

In context

Lead sponsor

Cairo University is the lead sponsor of 4,780 studies on the registry; 1,427 are open to participants now.

Of its 36 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.

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

04

Who can participate

Ages eligible
4 Years to 6 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

    • Patients:

      • Aged 4-6years, Medically free and Cooperative.
      • Teeth:
      • Restorable mandibular second primary molars with clinical signs or symptoms of irreversible pulpitis.

Pre-operative Radiographic criteria:

  • Absence of internal or external root resorption.
  • Absence of periapical or inter-radicular radiolucencies.

Exclusion criteria

Exclusion Criteria:

    • Patients:

      • Uncooperative children.
      • Children with systemic disease.
      • Physical or mental disabilities.
      • Refusal of participation.
      • Unable to attend follow- up visits.
      • Refusal to sign the informed consent.

Teeth:

  • Previously accessed teeth.
  • Mobile mandibular primary molars.
  • Pain on percussion.
  • Swelling in the vestibule or on palpation.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
50 participants (estimated)

Study arms

  • Experimental
    Group I pulpectomy using single rotary file system

    Administration of local anesthesia at the side of the affected tooth. Application of the rubber dam for isolation, then a standardized pulpectomy procedure will be performed using a large sterile round end bur in a high-speed hand piece with copious irrigation. After opening the access cavity, the root canal patency was checked for all the canals located using a size #10 (0.02%) k-file then a single rotary file (20 taper 4) will be adjusted on the desirable working length depending on an electronic apex locator (1 mm shorter than the apex) and used in pulpectomy in a brushing motion at the rotational speed 300 rpm with torque set at the lowest level, irrigation with saline

    Device: Fanta AF F one rotary files 20 taper 4

  • Active comparator
    Group II pulpectomy using manual files system

    Administration of local anesthesia at the side of the affected tooth. Application of the rubber dam for isolation, then a standardized pulpectomy procedure will be performed using a large sterile round end bur in a high-speed hand piece with copious irrigation. After opening the access cavity, manual files (k files, Mani, Inc., Japan) size 15,20,25,30 will be adjusted on the desirable working length depending on an electronic apex locator (1 mm shorter than the apex) and used in pulpectomy in a brushing motion, irrigation with saline

    Device: Manual files (k files ,Mani, Inc., Japan).

Interventions

  • DeviceFanta AF F one rotary files 20 taper 4

    Fanta AF F one rotary files 20 taper 4 single rotary file system

  • DeviceManual files (k files ,Mani, Inc., Japan).

    manual files (k files, Mani, Inc., Japan) size 15,20,25,30

06

What researchers measure

Primary outcomes

  1. Post-operative pain

    : will be recorded by Asking the patient and/or guardian using a 4-point pain scale at 6, 12, 24, 48 and 72 hours And 1 week after treatment. The parent of each participant will receive 6 flashcards that include four faces and a word describing each face. 0 - None: No pain present. 1. \- Mild: Pain is present but not distracting; easily ignored. 2. \- Moderate: Pain is distracting; manageable but limits activities. 3. \- Severe: Intense pain; unable to concentrate, requires immediate action or medication

    Time frame: At 6, 12, 24, 48 and 72 hours and 1 week after Treatment

Secondary outcomes

  1. child's behavior level

    child's behavior level: will be recorded by using FRANKEL behavior rating Scale: rate 1 means definitely negative "refusal of treatment , fearfulness" rate 2 means negative "reluctance to accept treatment , uncooperative" rate 3 means positive "acceptance of treatment , patient follows the dentist's directions" rate 4 means definitely positive " good rapport with the dentist , laughter and enjoyment

    Time frame: (Immediately after treatment)

  2. Clinical Success

    1. Absence of swelling will be recorded by visual examination 2. Absence of sinus or fistula: will be recorded by visual examination. 3. Pathologic mobility: will be recorded by mobility test (pressure using the end of two dental mirrors)

    Time frame: ( At 3, 6, 12 months)

  3. Instrumentation time

    will be recorded using a stopwatch

    Time frame: (During procedure start from anathesia till end of procedure)

  4. The obturation quality

    will be assessed using a radiograph(Using Coll and Sadrian criteria)

    Time frame: (Immediately after treatment)

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: No — data is available with the corresponding author on reasonable request

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 23, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07427420
Lead sponsor
Cairo University
Responsible party
Mona Adel Amer (Candidate in Department of Pediatric Dentistry and Dental Public Health Department, Faculty of Dentistry, Cairo University, Cairo University) — Principal investigator
First posted
Feb 23, 2026
Start date
Apr 10, 2026 (estimated)
Primary completion
Oct 1, 2026 (estimated)
Completion
Oct 1, 2027 (estimated)
Last update
Feb 23, 2026

Study contacts

Mona A amer, Master
Contact
mona.amen@dentistry.cu.edu.eg
+201100877939
Hanaa A Abd El Moniem, Phd
Contact
hanaa.ibraheem@dentistry.cu.edu.eg

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Feb 2026. You cannot join it, but the record below documents what was studied.

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