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Impact of Local Anesthesia Techniques on Children's Dental Treatment Experience

Comparing the Effectiveness of Several Local Anaesthesic Systems and Thier Effect on Pain Anxiety Behaviour and Vital Signs in Children

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07106138
Enrollment
112
Registered
2025-08-06
Start date
2024-04-23
Completion date
2025-03-10
Last updated
2025-08-11

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

Conditions

Dental Anxiety, Pain Management, Pediatric Dentistry

Keywords

Local anesthetic delivery systems, Computer-controlled anesthesia, Needle-free injection, Vibrotactile Devices, Dental anxiety, Pain management

Brief summary

compare the effectiveness of several local anesthetic delivery systems in managing pain, anxiety, behavior, and vital signs among pediatric dental patients. A total of 112 children aged 6 to 10 years were included and randomly assigned to receive local anesthesia via one of the following methods: conventional syringe, computer-controlled local anesthetic delivery system (Star Pen), needle-free injector (Comfort-In), or a vibrotactile device (Vibraject). Pain was assessed using the FLACC and Wong-Baker FACES scales, anxiety with the Venham Picture Test, and behavior with the Houpt scale. Vital signs including pulse and oxygen saturation were recorded during treatment. Additionally, satisfaction levels of both the patients and their parents were evaluated using structured questionnaires and Likert scales. The study seeks to determine which technique provides the most comfortable and effective experience for children undergoing dental procedures.

Detailed description

Local anesthesia is essential for pain control during pediatric dental procedures, yet its administration can cause significant anxiety and distress in children. Recent innovations aim to improve the delivery of anesthesia to make it less painful and more acceptable. This randomized clinical trial investigated and compared four local anesthetic systems: traditional syringe, computer-controlled local anesthetic delivery (CCLAD) using the Star Pen, needle-free injection using Comfort-In, and vibrotactile stimulation with Vibraject. A total of 112 healthy children aged 6 to 10 years participated in the study. The children were randomly assigned to one of the four anesthesia groups. Pain perception was measured using both the FLACC scale and the Wong-Baker FACES Pain Rating Scale. Anxiety was evaluated using the Venham Picture Test before and during the procedure. Child behavior was rated using the Houpt Behavioral Scale. Vital signs including pulse rate and oxygen saturation were monitored at baseline and during treatment. In addition, satisfaction levels were assessed for both the pediatric patients and their accompanying parents, using child-friendly satisfaction questionnaires and parent-rated Likert scales. This study aims to identify the anesthesia delivery method that best minimizes pain and anxiety, optimizes behavior, maintains physiological stability, and maximizes satisfaction, thereby enhancing the quality of care in pediatric dentistry.

Interventions

Manual injection using a conventional dental syringe and needle to deliver local anesthetic.

DEVICEStar Pen

A computer-controlled local anesthetic delivery system designed to provide slow, controlled injection with improved comfort.

A needle-free injection system that delivers anesthetic through high-pressure jet injection, reducing injection-related discomfort.

DEVICEVibraject

A vibrating attachment for dental syringes that provides vibrotactile stimulation during injection to distract from pain perception

Sponsors

Tishreen University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
6 Years to 10 Years
Healthy volunteers
No

Inclusion criteria

1. Children aged 6-10 years. 2. Physically healthy with no neurological disorders or systemic diseases. 3. Children classified as positive or negative-positive according to the modified Frankl Behavioral Rating Scale. 4. Not taking any sedatives or analgesics drugs

Exclusion criteria

1. Uncooperative children who exhibit clear behavioral problems. 2. Children with systemic diseases or disorders that may interfere with local anesthesia. 3. Use of any medications that may affect vital signs or pain response. 4. Presence of infection at the injection site.

Design outcomes

Primary

MeasureTime frameDescription
Pain level during dental anesthesia and treatment (behavioral assessment)From the start of local anesthetic injection until completion of pulpotomy, assessed up to 30 minutes.Procedural pain was assessed using the FLACC scale, which evaluates five behavioral categories (Face, Legs, Activity, Cry, Consolability), each scored from 0 to 2, for a total score range of 0-10. Higher scores indicate greater pain.Scores were assigned by trained observers during the procedure.
Pain level during dental anesthesia and treatment (self-reported)From the start of local anesthetic injection until completion of pulpotomy, assessed up to 30 minutes.Procedural pain was assessed using the Wong-Baker FACES Pain Rating Scale to measure children's self-reported pain, It's a self-reported scale with six cartoon faces representing increasing levels of pain, scored from 0 (no pain) to 10 (worst pain). Children were asked to point to the face that best described their pain. Higher scores on either scale indicated greater pain intensity.
Anxiety level during dental anesthesia and treatmentFrom the start of local anesthetic injection until completion of pulpotomy, assessed up to 30 minutes.Anxiety was measured using the Venham Picture Test (VPT),The test consists of eight pairs of cartoon images, each pair containing one figure showing a relaxed expression and one showing an anxious expression. Children were asked to choose the picture that best reflected how they felt. Scores ranged from 0 to 8, with higher scores indicating greater anxiety.

Secondary

MeasureTime frameDescription
Patient satisfaction with anesthesia techniqueImmediately after the procedurePatient satisfaction was assessed using a structured questionnaire with two yes/no questions: 1. Are you satisfied with the experience? (Yes/No) 2. Would you like to have the same technique in future visits? (Yes/No) Responses were coded as binary outcomes (Yes = 1, No = 0). Higher total scores indicated greater patient satisfaction.
Child behavior during dental proceduresFrom the start of local anesthetic injection until completion of pulpotomy, assessed up to 30 minutes.Behavior was assessed using the Houpt Behavior Rating Scale, which evaluates cooperation during dental procedures.The scale is ranging from 1 (poor) to 6 (excellent). Higher scores indicated better cooperation and comfort during treatment.
Parental satisfaction with anesthesia techniqueImmediately after the procedureParents rated their satisfaction using a Likert scale survey covering perceived child comfort and procedural experience. Scores ranged from 1 (very dissatisfied) to 5 (very satisfied). Higher scores reflected greater parental satisfaction with the anesthesia method used.
Heart rateFrom baseline measurement taken 5 minutes before local anesthetic injection, through the injection, and until completion of pulpotomy, assessed up to 35 minutes.Heart rate(beats per minute) was monitored using a pulse oximeter to evaluate the physiological stress response throughout treatment .Readings were recorded at predefined intervals. Increases in heart rate indicated heightened stress or discomfort during the procedure.
Oxygen saturation during dental proceduresFrom baseline measurement taken 5 minutes before local anesthetic injection, through the injection, and until completion of pulpotomy, assessed up to 35 minutes.Oxygen saturation (SpO₂, %) was monitored using a pulse oximeter to evaluate physiological stress response throughout treatment.Readings were recorded at predefined intervals. Decreases in SpO₂ indicated heightened stress or discomfort during the procedure.

Countries

Syria

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026