Comparison of Sodium Hypochlorite Gel and Solution With and Without Nanoparticles for Postoperative Pain After Pulpotomy in Permanent Mandibular Molars

NCT07774130 | Active Not Recruiting DMC

• 1 other identifier: Fue.rec (7)/1-2026
• Study Type: interventional
• Target: 60
• Locations: 1 country
• Sites: 1

Brief Summary

This randomized clinical trial aims to compare the effect of 2% sodium hypochlorite gel and solution, with and without chitosan nanoparticles, on postoperative pain following pulpotomy in mature permanent mandibular molars with symptomatic irreversible pulpitis. Participants will be randomly allocated into four parallel groups receiving either 2% sodium hypochlorite solution, 2% sodium hypochlorite gel, 2% sodium hypochlorite solution containing chitosan nanoparticles, or 2% sodium hypochlorite gel containing chitosan nanoparticles as the haemostatic agent during pulpotomy. Postoperative pain will be assessed using an 11-point Numerical Rating Scale at 6, 12, 24, and 72 hours and 7 days after treatment. The study will also evaluate the overall clinical and radiographic success of pulpotomy during follow-up.

Conditions

Vital Pulp Therapies; Pulpotomy; Irriversible Pulpitis; Postoperative Pain

Keywords

sodium hypochlorite gel; sodium hypochlorite solution; chitosan nanoparticles; first mandibular molar; pulpotomy

Outcome Measures

Primary Outcomes (1)

• Post-operative pain

  • Postoperative pain reported by the patient after pulpotomy in both groups is to be recorded by NRS (Numerical Rate Scale). Scale from 0-10 recorded every 24hours until the seventh day. The NRS for pain is a straight line with one end (point 0) meaning no pain and the other end (point 10) meaning the worst pain imaginable.

  Pain will be recorded preoperative and after 6hours, 12hours, 24hours, 72hours and one week using numerical rate scale (NRS).

Secondary Outcomes (1)

• Clinical and Radiographic Overall success

  3, 6, 12, months

Study Arms (4)

Intervention 1

EXPERIMENTAL

vital pulp therapy with NaOCL gel 2%.

Procedure: Sodium Hypochlorite gel 2%

Intervention 2

EXPERIMENTAL

vital pulp therapy with NaOCL solution 2% incorporated with nano-particles

Procedure: Sodium hypochlorite gel 2% with chitosan nano particles

Intervention 3

EXPERIMENTAL

vital pulp therapy with NaOCL gel 2% incorporated with nano-particles.

Procedure: Sodium hypochlorite solution 2% with chitosan nanoparticles

Control

EXPERIMENTAL

Vital pulp therapy with NaOCL solution 2% .

Procedure: Sodium hypochlorite solution 2%

Interventions

Sodium Hypochlorite gel 2% PROCEDURE

The procedures will be performed under local anesthesia with Lidocaine 2% and adrenaline 1/100,000. Teeth will be isolated with rubber dam. Caries will be completely removed with a sterile diamond stone (size 2). The access cavity will be prepared up to the level of pulp chamber floor using sterile round diamond bur size 2 in high-speed hand piece with coolant. Once the pulp has been reached, a sharp sterile spoon excavator should be used to remove the pulp tissue to the level of the radicular pulp. Hemostasis will be achieved by a small cotton pellet socked with agent, the teeth will be then divided into 4 groups depending on the pulpotomy agents into; • Group A which will be the intervention group and hemostasis is NaOCL gel 2%.

Intervention 1

Sodium hypochlorite gel 2% with chitosan nano particles PROCEDURE

The procedures will be performed under local anesthesia with Lidocaine 2% and adrenaline 1/100,000. Teeth will be isolated with rubber dam. Caries will be completely removed with a sterile diamond stone (size 2). The access cavity will be prepared up to the level of pulp chamber floor using sterile round diamond bur size 2 in high-speed hand piece with coolant. Once the pulp has been reached, a sharp sterile spoon excavator should be used to remove the pulp tissue to the level of the radicular pulp. Hemostasis will be achieved by a small cotton pellet socked with agent, the teeth will be then divided into 4 groups depending on the pulpotomy agents into; • Group B which will be the intervention group and hemostasis is NaOCL gel 2% with chotosan nanoparticles

Intervention 2

Sodium hypochlorite solution 2% with chitosan nanoparticles PROCEDURE

The procedures will be performed under local anesthesia with Lidocaine 2% and adrenaline 1/100,000. Teeth will be isolated with rubber dam. Caries will be completely removed with a sterile diamond stone (size 2). The access cavity will be prepared up to the level of pulp chamber floor using sterile round diamond bur size 2 in high-speed hand piece with coolant. Once the pulp has been reached, a sharp sterile spoon excavator should be used to remove the pulp tissue to the level of the radicular pulp. Hemostasis will be achieved by a small cotton pellet socked with agent, the teeth will be then divided into 4 groups depending on the pulpotomy agents into; • Group C which will be the intervention group and hemostasis is NaOCL solution 2% with chitosan nanoparticles

Intervention 3

Sodium hypochlorite solution 2% PROCEDURE

The procedures will be performed under local anesthesia with Lidocaine 2% and adrenaline 1/100,000. Teeth will be isolated with rubber dam. Caries will be completely removed with a sterile diamond stone (size 2). The access cavity will be prepared up to the level of pulp chamber floor using sterile round diamond bur size 2 in high-speed hand piece with coolant. Once the pulp has been reached, a sharp sterile spoon excavator should be used to remove the pulp tissue to the level of the radicular pulp. Hemostasis will be achieved by a small cotton pellet socked with agent, the teeth will be then divided into 4 groups depending on the pulpotomy agents into; • Group D which will be the intervention group and hemostasis is NaOCL solut 2%.

Control

Eligibility Criteria

• Age: 15 Years - 40 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• Patients suffering from Symptomatic irreversible pulpitis in mature mandibular molars.
• Patients of either gender aged from 15-40.
• Patients free from any systemic disease that may affect normal healing and predictable outcome.
• Patients who will agree to the consent and will commit to follow-up period.
• Patients with mature root.
• Patients with no internal or external resorption and no periapical lesions.
• Tooth give positive response to sensitivity test.
• Tooth is restorable and free from advanced periodontal disease, cracks and splits.
• Hemostasis achieved after total pulpotomy.
• Soft tissues around the tooth are normal with no swelling or sinus tract.

You may not qualify if:

• Hemostasis after 10 minutes can not be controlled after total pulpotomy.
• Patients with immature roots.
• Patients with any systemic disease that may affect normal healing.
• Patients with periapical lesions or infections.
• Pregnant females.
• Patients who could/would not participate in a 6 months follow-up.
• Patients with fistula or swelling
• Patients with necrotic pulp.
• Patients with old age.

Sponsors & Collaborators

• Future University in Egypt: lead

Study Sites (1)

University

Cairo, 11511, Egypt

Location

MeSH Terms

Conditions

Pain, Postoperative

Interventions

Sodium Hypochlorite

Condition Hierarchy (Ancestors)

Postoperative Complications; Pathologic Processes; Pathological Conditions, Signs and Symptoms; Pain; Neurologic Manifestations; Signs and Symptoms

Intervention Hierarchy (Ancestors)

Hypochlorous Acid; Chlorine Compounds; Inorganic Chemicals; Oxides; Oxygen Compounds; Sodium Compounds

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Dentist

Study Record Dates

• First Submitted: August 10, 2026
• First Posted: August 19, 2026
• Study Start: March 1, 2026
• Primary Completion: April 1, 2026
• Study Completion (Estimated): March 1, 2027
• Last Updated: August 19, 2026

Record last verified: 2026-08

Locations

EG (1)