# Effect of Low-level Laser Therapy Versus Calcium Hydroxide Intracanal Medication on Postoperative Pain and Substance P Levels in Patients With Symptomatic Apical Periodontitis

> **NCT04594317** · NA · UNKNOWN · sponsor: **Cairo University** · enrollment: 46 (estimated)

## Conditions studied

- Postoperative Pain
- Apical Periodontitis

## Interventions

- **DEVICE:** low level laser therapy

## Key facts

- **NCT ID:** NCT04594317
- **Lead sponsor:** Cairo University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2021-02-01
- **Primary completion:** 2021-12-01
- **Final completion:** 2022-06-01
- **Target enrollment:** 46 (ESTIMATED)
- **Last updated:** 2021-01-26


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04594317

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04594317, "Effect of Low-level Laser Therapy Versus Calcium Hydroxide Intracanal Medication on Postoperative Pain and Substance P Levels in Patients With Symptomatic Apical Periodontitis". Retrieved via AI Analytics 2026-06-09 from https://api.ai-analytics.org/clinical/NCT04594317. Licensed CC0.

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