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CTRI Number  CTRI/2025/12/098438 [Registered on: 04/12/2025] Trial Registered Prospectively
Last Modified On: 05/02/2026
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia
Dentistry 
Study Design  Randomized, Crossover Trial 
Public Title of Study   Pain control during lower wisdom tooth removal using two different local anaesthesia techniques. 
Scientific Title of Study   A randomized clinical trial comparing the effectiveness of intraligamentary and infiltration anesthesia techniques versus inferior alveolar nerve block using four percent articaine for intraoperative pain management in partially erupted mandibular third molar surgery 
Trial Acronym  A-LINE Trial 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Afsana Ahmed 
Designation  Postgraduate trainee 
Affiliation  Meenakshi Ammal Dental College and Hospital 
Address  Maduravoyal, Alapakkam main road, Janaki Nagar, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu
Maduravoyal, Alapakkam main road, Janaki Nagar, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu
Chennai
TAMIL NADU
600095
India 
Phone  07896551329  
Fax    
Email  afsanaahmed9897@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr P. Anantanarayanan 
Designation  Professor, Department of Oral and Maxillofacial Surgery 
Affiliation  Meenakshi Ammal Dental College and Hospital 
Address  Maduravoyal, Alapakkam main road, Janaki Nagar, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu
Maduravoyal, Alapakkam main road, Janaki Nagar, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu
Chennai
TAMIL NADU
600095
India 
Phone  9840052670  
Fax    
Email  anantparam@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Afsana Ahmed 
Designation  Postgraduate trainee 
Affiliation  Meenakshi Ammal Dental College and Hospital 
Address  Maduravoyal, Alapakkam main road, Janaki Nagar, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu
Maduravoyal, Alapakkam main road, Janaki Nagar, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu
Chennai
TAMIL NADU
600095
India 
Phone  07896551329  
Fax    
Email  afsanaahmed9897@gmail.com  
 
Source of Monetary or Material Support  
Meenakshi Ammal Dental College and Hospital Meenakshi Ammal Dental College and Hospital Address: Alapakkam Main Road, Maduravoyal, Chennai – 600095, Tamil Nadu, India. 
 
Primary Sponsor  
Name  Afsana Ahmed 
Address  Meenakshi Ammal Dental College and Hospital, Alapakkam Main Road, Maduravoyal, Chennai – 600095, Tamil Nadu, India.  
Type of Sponsor  Other [Private Dental College] 
 
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 
Afsana Ahmed  Meenakshi Ammal Dental College and Hospital  Room no 5, Dept of Oral and Maxillofacial Surgery, Maduravoyal, Alapakkam main road, Janaki Nagar Chennai-600095, Tamil Nadu India
Chennai
TAMIL NADU 
07896551329

afsanaahmed9897@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O||Medical and Surgical,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Inferior alveolar nerve block (IANB) using 4% articaine  Inferior alveolar nerve block administered using 4% articaine with 1:100,000 adrenaline using a standard dental syringe at the mandibular foramen region. Buccal infiltration may be provided as necessary. This serves as the comparator arm against intraligamentary + infiltration anesthesia. Administration time: approximately 2 minutes. 
Intervention  Intraligamentary + Buccal Infiltration Anesthesia using 4% Articaine  Intraligamentary anesthesia administered using 4% articaine with 1:100,000 adrenaline at the distal and mesial periodontal ligament space of the mandibular third molar, followed by buccal infiltration of 4% articaine. The technique will be performed using an intraligamentary syringe. Administration time: approximately 2–3 minutes. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  40.00 Year(s)
Gender  Both 
Details  1.Patients with partially erupted mandibular third molars indicated for surgical removal
2.ASA I or II healthy individuals
3.Patients willing to participate and provide informed consent
4.Patients aged 18-40 years 
 
ExclusionCriteria 
Details  1.Patients with acute infections at the surgical site(acute pathology)
2.Known allergy or hypersensitivity to articaine or any local anesthetic.
3.Pregnant or lactating women
4.Patients on anticoagulants or with bleeding disorders
 
 
Method of Generating Random Sequence   Coin toss, Lottery, toss of dice, shuffling cards etc 
Method of Concealment   Not Applicable 
Blinding/Masking   Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
Intraoperative pain perception measured using a 10-point Visual Analog Scale (VAS). 
Time Points:

Baseline (before anaesthesia),
Immediately after administration of anaesthesia(T1),
During incision(T2),
During bone removal(T3),
During tooth elevation(T4),
Immediately after completion of the procedure. 
 
Secondary Outcome  
Outcome  TimePoints 
Onset time of anesthesia (in seconds).  Measured immediately after injection until achievement of soft-tissue numbness (recorded in seconds) 
 
Target Sample Size   Total Sample Size="30"
Sample Size from India="30" 
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 4 
Date of First Enrollment (India)   02/01/2026 
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="1"
Months="11"
Days="28" 
Recruitment Status of Trial (Global)
Modification(s)  
Open to Recruitment 
Recruitment Status of Trial (India)  Open to Recruitment 
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   This randomized clinical trial aims to compare the effectiveness of intraligamentary and infiltration anesthesia with inferior alveolar nerve block using 4 percent articaine for intraoperative pain management during surgical removal of partially erupted mandibular third molars. The primary outcome is intraoperative pain measured using a ten point visual analog scale at different stages of surgery. Secondary outcome include onset time of anesthesia. The study will help determine whether intraligamentary and infiltration anesthesia can be a reliable alternative to the conventional inferior alveolar nerve block technique.  
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