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NCT Number: NCT07056101

"Study of Pain Perception Using Computer-Controlled Versus Conventional Local Anaesthesia in Children Undergoing Molar Extraction

This clinical trial aims to compare pain perception in children during dental procedures when using a computer-controlled local anesthesia device versus a traditional syringe. Children aged 6 to 8 years who need maxillary primary molar extraction will be randomly assigned to one of four groups: three groups using different speeds of the GENI computer-controlled device, and one group using a conventional syringe. The study will assess pain using facial expression scales and physiological measures such as heart rate. The goal is to find a more comfortable method for delivering anesthesia to pediatric dental patients.

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Key information

Conditions

Dental Phobia Dental Anesthesia Dental Anesthesia Efficacy Dental Anxiety

Age range

6 year–8 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Cairo University

Cairo, Giza Governorate, 3755220, Egypt

About this study

This is a parallel-design randomized controlled clinical trial evaluating pain perception during local anesthesia administration in children undergoing extraction of maxillary primary molars. The study compares the use of a computer-controlled local anesthesia delivery system (GENI) at three different injection speeds-high, moderate, and low-with conventional syringe-based anesthesia.

Children aged 6 to 8 years who meet the inclusion criteria will be randomly allocated to one of four groups using a computer-generated randomization sequence. Standardized injection techniques will be applied in all groups. The primary outcome is subjective pain, assessed using the Wong-Baker FACES Pain Rating Scale. Secondary outcomes include objective behavioral pain assessments using the FLACC scale and physiological responses such as heart rate and oxygen saturation measured with a pulse oximeter.

All procedures will be performed by a single trained operator. The assistant supervisor will monitor randomization and data collection. Although blinding of the operator and participants is not feasible due to the nature of the devices, outcome assessors and the statistician will remain blinded to group assignment to reduce bias.

The study aims to identify whether the GENI device provides improved comfort, reduced pain, and greater cooperation among pediatric patients compared to traditional local anesthesia techniques. The results are expected to guide the development of better pain management strategies in pediatric dentistry.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Children aged from 6 to 8 years old
  • Both sexes
  • Healthy children classified as ASA I
  • Children with maxillary primary molars indicated for extraction
  • No previous dental experience
  • Mentally capable of communication and following instructions
  • No acute dental pain

Exclusion criteria

  • Uncooperative children or those with a behavioral management problem (Frankl rating 1 or 2)
  • Children with known allergies to the local anesthetic or dental materials used in the study
  • Children taking medications (e.g., antibiotics, analgesics) in the previous 48 hours that may alter pain perception
  • Children whose parents or legal guardians refuse to sign the informed consent form
  • Children experiencing acute dental pain

Treatment and study plan

A conventional dental syringe

Device

The conventional dental syringe (C-K JECT) is a manual, metal aspirating syringe commonly used for local anesthesia administration in dental procedures. In this study, the device is used to perform buccal and intrapapillary infiltration using 4% articaine with 1:100,000 epinephrine. Injections are delivered manually at a standardized rate by the principal investigator. This arm serves as the active comparator to evaluate differences in pain perception between traditional syringe injections and those delivered via a computer-controlled device.

GENI High-Speed Injection

Device

The GENI device is a computer-controlled local anesthesia delivery system that automates the injection process using pressure feedback to regulate flow. In this arm, the device is set to high-speed mode to deliver the anesthetic solution at the fastest available flow rate. Buccal and intrapapillary infiltration is performed using 4% articaine with 1:100,000 epinephrine. The procedure is carried out by the principal investigator using a standardized technique. Pain perception is assessed following injection to evaluate the impact of delivery speed on patient experience.

GENI Moderate-Speed Injection

Device

The GENI device is a computer-controlled local anesthesia delivery system designed to regulate flow and pressure during injection using real-time feedback. In this arm, the device is set to moderate-speed mode, delivering anesthetic at an intermediate flow rate. Buccal and intrapapillary infiltration is performed using 4% articaine with 1:100,000 epinephrine. The injection is administered by the principal investigator using a standardized technique. This group is used to assess the impact of moderate-speed delivery on pain perception and physiological response in pediatric patients.

GENI Low-Speed Injection

Device

The GENI device is a computer-controlled local anesthesia delivery system that maintains precise control over injection pressure and flow. In this arm, the device is set to low-speed mode, delivering the anesthetic solution at the slowest available rate to minimize tissue pressure and potential discomfort. Buccal and intrapapillary infiltration is administered using 4% articaine with 1:100,000 epinephrine. The injection is performed by the principal investigator using a standardized technique. This group evaluates whether low-speed delivery reduces pain perception and improves patient comfort compared to faster injection speeds and conventional methods.

Primary outcomes

  1. Wong-Baker Subjective Pain Perception During Local Anesthesia Injection

    Time frame: Immediately after local anesthesia injection

    Pain perception will be measured using the Wong-Baker FACES Pain Rating Scale, which ranges from 0 (no pain) to 10 (worst pain). Each child will select the face that best represents their level of pain immediately following the injection. This scale is a validated tool for assessing subjective pain in pediatric patients.

Secondary outcomes

  1. Objective Pain Perception During local anathesia Injection (FLACC Scale)

    Time frame: During local anesthesia injection(Day 1)

    Objective pain will be assessed using the FLACC Scale during the local anathesia injection . An external evaluator will observe and score facial expression,leg movement,activity,crying,and consolability.

    Unit of measure :

    Score (0-10)

  2. Heart rate Response to Local Anesthesia injection

    Time frame: Baseline (within 10 minutes before injection )and during injection (Day 1)

    Heart rate will be measured using a fingertip pulse oximeter to evaluate physiological stress response. Reading will be taken before injection (baseline) and during the injection.

    Unit of measure :

    Beats per minute (bpm)

  3. Oxygen Saturation During Local Anesthesia injection

    Time frame: Baseline (within 10 minutes before injection ) and during injection (Day 1)

    Oxygen saturation (%) will be measured using a fingertip pulse oximeter at baseline and during the injection to assess any change in oxygen levels as a physiological response to stress or pain.

    Unit of measure :

    Percentage (%)

Study contacts

Contact information is provided by the study sponsor or research team.

tarek MHD kher alsaka amini, Master degree

CONTACT

[email protected]

+201127255997

Sponsors and collaborators

Lead sponsor

Tarek MHD kher al saka amini

Other

Registry information

Official study title

Evaluation of Pain Perception Using Computer-Controlled Local Anaesthesia Delivery With Different Injection Speeds Versus Conventional Anaesthesia for Maxillary Primary Molars: A Randomized Controlled Trial

Acronym: CCLAD-Pain

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Jul 9, 2025
Registry last updated
Jul 14, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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