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CTRI Number  CTRI/2025/09/095051 [Registered on: 18/09/2025] Trial Registered Prospectively
Last Modified On: 17/09/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Dentistry 
Study Design  Randomized, Parallel Group, Multiple Arm Trial 
Public Title of Study   Comparative Study of Herbal and Conventional Topical Gels to Reduce Injection Pain in Children Aged 6–10 Years 
Scientific Title of Study   Pain Perception in Pediatric Infiltration Anesthesia: A Comparative Evaluation of Spilanthes acmella gel Betel Leaf extract gel and Benzocaine Topical Agent in Children Aged 6-10-years. 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Vinaya Kumar Kulkarni  
Designation  Professor and HOD  
Affiliation  SMBT Dental College and Hospital Sangamner 
Address  Department of Pediatric and Preventive Dentistry Room No 102 SMBT Dental College and Hospital Amrutnagar Sangamner
Department of Pediatric and Preventive Dentistry Room No 102 SMBT Dental College and Hospital Amrutnagar Sangamner
Ahmadnagar
MAHARASHTRA
422608
India 
Phone  8830483436  
Fax    
Email  vinayakumar53@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Vinaya Kumar Kulkarni  
Designation  Professor and HOD  
Affiliation  SMBT Dental College and Hospital Sangamner 
Address  Department of Pediatric and Preventive Dentistry Room No.102 SMBT Dental College and Hospital Amrutnagar Sangamner
Department of Pediatric and Preventive Dentistry Room No.102 SMBT Dental College and Hospital Amrutnagar Sangamner
Ahmadnagar
MAHARASHTRA
422608
India 
Phone  8369062570  
Fax    
Email  vinayakumar53@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Siddhi Shinde 
Designation  Postgraduate student 
Affiliation  SMBT Dental College and Hospital, Sangamner 
Address  Department of Pediatric and Preventive Dentistry, Room no 102 SMBT Dental College and Hospital, Amrutnagar, Sangamner
Amrutnagar, Ghulewadi, Sangamner.
Ahmadnagar
MAHARASHTRA
422608
India 
Phone  8369062570  
Fax    
Email  drsidshin@gmail.com  
 
Source of Monetary or Material Support  
SMBT Dental College and Hospital, Sangamner- 422608 Maharashtra, India  
 
Primary Sponsor  
Name  SMBT Dental College and Hospital, Sangamner 
Address  Amrutnagar, Ghulewadi, Sangamner-422608. 
Type of Sponsor  Other [Private dental college and hsopital.] 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
DrSiddhi Shinde  Department of Pediatric and Preventive Dentistry, Room No 102   SMBT Dental College and Hospital ,Amrutnagar Sangamner-422608
Ahmadnagar
MAHARASHTRA 
8369062570

drsidshin@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Committee on Ethics, SMBT Dental College and Hospital, Sangamner  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K038||Other specified diseases of hard tissues of teeth, (2) ICD-10 Condition: K088||Other specified disorders of teethand supporting structures,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  5% Benzocaine gel(control)  Participant Preparation Children aged 6–10 years fulfilling the inclusion and exclusion criteria will be selected after obtaining informed consent from the parent/guardian and assent from the child. Each child’s behavior will be assessed using the Frankl Behaviour Rating Scale, and only those rated as "positive" or "definitely positive" will proceed. Participants will be randomly allocated into three groups using a computer-generated randomization sequence: Group A: Spilanthes acmella gel Group B: Betel leaf extract gel Group C: 5% Benzocaine gel Pre-injection Protocol The area of mucosa (buccal and palatal) indicated for local anesthetic injection will be dried using a sterile cotton roll and air syringe. A pea-sized amount of the assigned topical anesthetic gel will be applied to the dried mucosa using a cotton-tipped applicator with gentle pressure. The gel will be allowed to remain undisturbed on the site for 1 full minute to achieve adequate mucosal absorption. No rinsing or suction will be performed during this period. Injection Technique Following the gel application period, a standard infiltration injection will be administered using a 26-gauge short dental needle. A total of 0.5–1 mL of 2% lignocaine with 1:100,000 epinephrine will be deposited slowly (over 30 seconds) at the site. All injections will be performed by a single calibrated operator to ensure standardization. Pain Assessment Immediately after the injection, the child will be asked to indicate their pain level using the Wong-Baker Faces Pain Rating Scale (WBFPRS) — a validated tool for self-reporting pain in children. Simultaneously, an independent observer (blinded to the group allocation) will assess the child’s behavioural pain response using the FLACC scale (Face, Legs, Activity, Cry, Consolability). Both scores will be recorded on a data sheet for analysis.  
Comparator Agent  Spilanthes acmella gel Betel leaf extract gel   Participant Preparation Children aged 6–10 years fulfilling the inclusion and exclusion criteria will be selected after obtaining informed consent from the parent/guardian and assent from the child. Each child’s behavior will be assessed using the Frankl Behaviour Rating Scale, and only those rated as "positive" or "definitely positive" will proceed. Participants will be randomly allocated into three groups using a computer-generated randomization sequence: Group A: Spilanthes acmella gel Group B: Betel leaf extract gel Group C: 5% Benzocaine gel Pre-injection Protocol The area of mucosa (buccal and palatal) indicated for local anesthetic injection will be dried using a sterile cotton roll and air syringe. A pea-sized amount of the assigned topical anesthetic gel will be applied to the dried mucosa using a cotton-tipped applicator with gentle pressure. The gel will be allowed to remain undisturbed on the site for 1 full minute to achieve adequate mucosal absorption. No rinsing or suction will be performed during this period. Injection Technique Following the gel application period, a standard infiltration injection will be administered using a 26-gauge short dental needle. A total of 0.5–1 mL of 2% lignocaine with 1:100,000 epinephrine will be deposited slowly (over 30 seconds) at the site. All injections will be performed by a single calibrated operator to ensure standardization. Pain Assessment Immediately after the injection, the child will be asked to indicate their pain level using the Wong-Baker Faces Pain Rating Scale (WBFPRS) — a validated tool for self-reporting pain in children. Simultaneously, an independent observer (blinded to the group allocation) will assess the child’s behavioural pain response using the FLACC scale (Face, Legs, Activity, Cry, Consolability). Both scores will be recorded on a data sheet for analysis.  
 
Inclusion Criteria  
Age From  6.00 Year(s)
Age To  10.00 Year(s)
Gender  Both 
Details  Children aged 6–10 years.
Frankl positive behavior rating of 3 and 4.(positive/cooperative).
Patients indicated for local anesthesia via infiltration for treatment (extraction procedure).
 
 
ExclusionCriteria 
Details  •Known allergy to any of the topical agents to be used.
•History of systemic illness or neurological disorders.
•Acute infection or inflammation at injection site.
•Specially abled children.
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
To determine whether herbal gels like Spilanthes acmella and betel leaf extract offer comparable or superior pain reduction relative to benzocaine.  Pre operative and immediately post operative  
 
Secondary Outcome  
Outcome  TimePoints 
To establish safe, effective, & child-friendly alternatives for topical anesthesia in pediatric dentistry.   NA 
 
Target Sample Size   Total Sample Size="60"
Sample Size from India="60" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 3 
Date of First Enrollment (India)   29/09/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="0"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

Title:
Comparative Evaluation of Spilanthes acmella Gel, Betel Leaf Extract Gel, and 5% Benzocaine Gel for Pain Reduction During Pediatric Infiltration Anesthesia: A Randomized Clinical Trial

Brief Summary:
This triple-arm, randomized, controlled, single-blinded clinical trial aims to compare the efficacy of three topical anesthetic agents—Spilanthes acmella gel, betel leaf (Piper betle) extract gel, and 5% benzocaine gel—in reducing pain perception during buccal and palatal infiltration injections in children aged 6 to 10 years.

A total of 60 healthy pediatric patients requiring infiltration anesthesia for routine dental procedures will be randomly allocated into three groups (n = 20 per group). After standardized application of the assigned topical gel for 1 minute, a local infiltration using 2% lignocaine with 1:100,000 epinephrine will be administered. Pain will be assessed using the Wong-Baker Faces Pain Rating Scale (WBFPRS) and FLACC behavioral scale immediately post-injection.

Data will be analyzed using ANOVA and post-hoc Tukey tests to determine statistically significant differences in pain perception between the groups. The study seeks to establish whether phyto-based topical anesthetics can serve as effective, safe, and child-friendly alternatives to conventional agents in pediatric dentistry.

Primary Objective:
To compare pain perception during infiltration anesthesia following application of Spilanthes acmella gel, betel leaf extract gel, and 5% benzocaine gel.

Study Design:
Randomized, controlled, triple-arm, single-blinded clinical trial.

Sample Size:
60 children (20 per group), aged 6–10 years.

Primary Outcome Measures:

  • Wong-Baker Faces Pain Rating Scale (child-reported)

  • FLACC Scale (clinician-observed)

Randomization Method:
Computer-generated random allocation sequence.

Blinding:
Single-blinded (participant and observer blinded; operator not blinded).

Statistical Tools:
Descriptive statistics, ANOVA, Tukey post-hoc test (significance at p < 0.05; SPSS v25).

Expected Outcome:
To determine whether Spilanthes acmella or betel leaf gel is comparable or superior to benzocaine in reducing injection pain in pediatric patients.

 
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