The effect of topical anesthesia on injection pain

The effect of 20% benzocaine gel on the pain caused by lower alveolar nerve block injections

Status

Active, not recruiting

Phases

Phase 2

Study type

Interventional

Source

IRCT

Registry ID

IRCT20151017024573N8

Enrollment

Registered

2019-09-28

Start date

2019-09-16

Completion date

Unknown

Last updated

2019-11-05

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

Conditions

Extraction due to caries. Other dental caries

Interventions

Intervention 1: Intervention group: topical anesthetic gel Benzocaine 20% (master-dent USA) put on a cotton swap as much as a pea after the area is dried with air.then it is applied for two minutes (

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Indication of mandibular tooth extraction

Exclusion criteria

Exclusion criteria: Having a systemic disease in which the use of lidocaine anesthesia is partially or completely prohibited.

Design outcomes

Primary

Measure	Time frame
Pain intensity. Timepoint: Before and after injection. Method of measurement: Visual Analogue Scale.	—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactMohadeseh Heidari

Tehran University of Medical Sciences

mheidari@mazums.ac.ir+98 21 8897 8351

Outcome results

None listed

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