Reversal of Anaesthesia with Diode Laser

Evaluation of Photobiomodulation Therapy with Diode Laser in Reversal of Maxillary and Mandibular Soft Tissue Local Anaesthesia in Paediatric Dentistry: Randomized Clinical Trial:a Randomized Clinical Trial

Background: After local anesthesia, which is frequently used in pediatric dentistry, long-term soft tissue numbness can cause various problems. The aim of this study was to evaluate the effectiveness of PBMT in reversing soft tissue anaesthesia in children following local anaesthesia administration.

Methods: In a split-mouth randomized study, 40 children aged 4 to 9 years, eligible to receive local infiltration injection on both maxillary (n=20) and mandibular (n=20) right and left sides, will included. Maxillary and mandibular quadrants will be randomly assigned to laser or sham laser groups. Normality will assessed using the Kolmogorov-Smirnov test. Categorical variables between laser and control groups will compared using the McNemar paired sample test. Significance will be set at p<0.05.

Study Overview

• Status: Completed
• Conditions: Photobiomodulation Therapy
• Intervention / Treatment: Device: Actual laser application; Device: Sham laser application

• Study Type: Interventional
• Enrollment (Actual): 40
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Turkey
  • Rize, Turkey, 53100
    • Recep Tayyip Erdogan University, Faculty of Dentistry

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• - Children whose parents signed the written informed consent form and who themselves gave assent,
• Children with a Frankl behaviour rating scale score of 3 or 4,
• Children aged between 4 and 9 years old who can understand soft tissue sensation and respond to it,
• Children requiring treatment with local infiltration anaesthesia for multiple teeth in both the mandible and maxilla,
• Children with no history of allergy to materials used for anaesthesia or sulphite,
• Children who have not taken any analgesic medication at least 24 hours before treatment,
• Children without any systemic conditions that would interfere with dental treatment under local anaesthesia.

Exclusion Criteria:

• Occurrence of an error during anaesthesia injection resulting in insufficient anaesthesia for treatment,
• Inability of the patient to provide clear assessments of response to soft tissue anaesthesia,
• Presence of systemic conditions that would prevent anaesthesia administration or dental treatment,
• Children requiring urgent dental treatment priority such as acute painful teeth.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: N/A
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Actual laser application	Device: Actual laser application; At approximately 45 minutes into the treatment session, subjects in the laser group received irradiation from a 4 W power, 810 nm diode laser (Fox; ARC Laser, GmbH, Nürnberg, Germany). The laser was operated in continuous mode, delivering 12-second shots per point using a therapy head with a point size of 0.38 cm². Each point received 6.3 J/cm² of laser energy, resulting in a total energy density of 37.8 J/cm² across 6 points.
Sham Comparator: Sham laser was applied symbolically	Device: Sham laser application; Sham laser was applied symbolically as a diffused closed laser (targeted beam) at the same distance and simultaneously. Evaluations after laser irradiation were conducted by a responsible specialist physician who was not involved in performing the treatment procedures.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Anesthesia reversal time	Until the first reversal of anesthesia, a palpation technique will be used to record every 10 minutes. With this technique, the presence of a sense of touch and tingling will be questioned. In order to obtain an objective answer, the child will be asked whether he/she knows what a tingling sensation is based on his/her previous experiences and will be told what and how this sensation is.	up to 30 minutes after procedure

Collaborators and Investigators

• Sponsor: Recep Tayyip Erdogan University

Study record dates

Study Major Dates

• Study Start (Actual): January 18, 2023
• Primary Completion (Actual): January 18, 2024
• Study Completion (Actual): April 30, 2024

Study Registration Dates

• First Submitted: January 21, 2025
• First Submitted That Met QC Criteria: February 21, 2025
• First Posted (Actual): March 25, 2025

Study Record Updates

• Last Update Posted (Actual): March 25, 2025
• Last Update Submitted That Met QC Criteria: February 21, 2025
• Last Verified: January 1, 2025

More Information

Terms related to this study

• Keywords: child; photobiomodulation therapy; diode laser; dental local anaesthesia
• Other Study ID Numbers: RecepTayyipErdoganUniversity (Recepteutrh)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No