Comparison of the Effects of Low-Level Laser Therapy at 810 nm and 660 nm in Reducing Pain

Evaluation and Comparison of the Effects of Low-Level Laser Therapy at 810 nm and 660 nm in Reducing Pain After Root Canal Treatment of Maxillary and Mandibular Premolar and Molar Teeth with Irreversible Pulpitis and Apical Periodontitis

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT20130812014333N266

Enrollment

Registered

2025-09-30

Start date

2025-10-12

Completion date

Unknown

Last updated

2025-10-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Symptomatic apical periodontitis. Acute apical periodontitis of pulpal origin

Interventions

Intervention 1: In the first intervention group, patients will receive a low-power laser with a wavelength of 810 nm in addition to standard endodontic treatment. Intervention 2: In the second interve

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Informed consent People with symptomatic apical periodontitis in mandibular and maxillary premolars and molars Symptomatic irreversible pulpitis Pain score above 54 before the start of the study

Exclusion criteria

Exclusion criteria: Taking painkillers 48 hours before treatment Pregnant or breastfeeding women Patients presenting for secondary or repeat treatment People with a history of seizures

Design outcomes

Primary

Measure	Time frame
Pain level. Timepoint: At baseline, immediately after treatment, and at 4, 8, 12, and 24 hours after treatment. Method of measurement: Using a visual pain scale (VAS).	—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactAnahita Alikhani

Islamic Azad University, Khorasgan branch

Anahitaalkh@gmail.com+98 31 3535 4003

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026