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CTRI Number  CTRI/2021/08/035560 [Registered on: 10/08/2021] Trial Registered Prospectively
Last Modified On: 19/05/2023
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   Effect of addition of steroids to local anesthesia on surgical extraction of impacted lower wisdom tooth. 
Scientific Title of Study   A comparative evaluation of effect of addition of 8 mg Dexamethasone to 2% Lignocaine with adrenaline in impacted mandibular third molar surgery: A Split Mouth Randomized double blinded Study 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Poorna P 
Designation  post graduate student 
Affiliation  Manipal Academy of Higher education 
Address  Department of Oral and Maxillofacial Surgery, Manipal College of Dental Sciences - Mangalore
Lighthouse Hill Road, Hampannakatta, Mangalore
Dakshina Kannada
KARNATAKA
575001
India 
Phone  09701362020  
Fax    
Email  potharaju.poorna@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Premalatha Shetty 
Designation  professor and associate dean 
Affiliation  Manipal College of Dental Sciences, Mangalore 
Address  Manipal College of dental sciences, lighthouse hill road, Mangalore

Dakshina Kannada
KARNATAKA
575001
India 
Phone    
Fax    
Email  premalatha.shetty@manipal.edu  
 
Details of Contact Person
Public Query
 
Name  DrPoorna P 
Designation  post graduate student 
Affiliation  Manipal Academy of Higher education 
Address  Department of Oral and Maxillofacial Surgery, Manipal College of Dental Sciences,
lighthouse hill road, hampannakatta, Mangalore
Dakshina Kannada
KARNATAKA
575001
India 
Phone  09701362020  
Fax    
Email  potharaju.poorna@gmail.com  
 
Source of Monetary or Material Support  
Manipal College of Dental Sciences, Mangalore 
 
Primary Sponsor  
Name  Poorna P 
Address  apt 603, Abhiman Hills, Lighthouse hill road, Mangalore 
Type of Sponsor  Other [self funded] 
 
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 
DrPoorna P  Manipal College of Dental Sciences, Mangalore  Dept of Oral and maxillofacial surgery, Manipal college of dental sciences, light house hill road, Mangalore Dakshina Kannada KARNATAKA
Dakshina Kannada
KARNATAKA 
9701362020

potharaju.poorna@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: K011||Impacted teeth,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  dexamethasone  2 ml of 2% Lignocaine with 1:200000 Adrenaline and 8mg Dexamethasone in 2ml distilled water 
Comparator Agent  distilled water  2ml of 2% Lignocaine with 1:200000 Adrenaline and 2ml distilled water 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  35.00 Year(s)
Gender  Both 
Details  Subjects falling under ASA class 1 & 2.
Subjects requiring surgical extraction of bilateral mandibular third molars in class II position B.
Subjects with no acute inflammation, excessive caries, pain and pathology around the mandibular
third molars
Subjects who have signed the informed consent
 
 
ExclusionCriteria 
Details  Subjects with infection around third molars.
Subjects with peptic ulcer.
Subjects who are pregnant and lactating.
Subject with diabetes mellitus, systemic endocrine disorders, hypertension, kidney diseases, blood clotting disorders, obesity.
Subjects having an allergy to any of the drugs or materials to be used.
Subjects who have used antibiotics in the past 2 weeks.
Subjects who have used NSAIDs in the past 1 week.
Subjects who could not cooperate
Subjects who refused to take part in the study 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   An Open list of random numbers 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
the difference in time of onset and duration of local anesthesia.
 
1. baseline
2.2-8 hours after the procedure 
 
Secondary Outcome  
Outcome  TimePoints 
the difference in pain, swelling, and mouth opening.  24 hours, 48 hours and 1 week 
 
Target Sample Size   Total Sample Size="70"
Sample Size from India="70" 
Final Enrollment numbers achieved (Total)= "35"
Final Enrollment numbers achieved (India)="35" 
Phase of Trial   N/A 
Date of First Enrollment (India)   16/08/2021 
Date of Study Completion (India) Date Missing 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) 25/11/2022 
Estimated Duration of Trial   Years="2"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Completed 
Publication Details
Modification(s)  
nil 
Individual Participant Data (IPD) Sharing Statement

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

Response - NO
Brief Summary
Modification(s)  
Surgical extraction of impacted third molars is a routine minor oral surgical procedure carried out
usually under local anesthesia and is associated with postoperative sequelae including swelling, pain,
trismus, infection, bleeding, and paraesthesia.
Diligent administration of local anesthetic agent will help in achieving pain-free surgical extraction
while also reducing the risk of paresthesia and trismus post-operatively. An increased depth and
duration of action of local anesthetic agent is desirable to minimize the trauma experienced by the
patient intra-operatively and in achieving the pain-free transition from the waning anesthesia to analgesic
medication in the post-operative period respectively.
The goodness of Bupivacaine being a potent, long-acting local anesthetic with low tissue toxicity is
nullified by the undeniable fact that it is the most cardiotoxic of them all, involving both electrical and
mechanical structures within the heart. Therefore a need exists to find an alternative to Bupivacaine
that has a comparable depth and duration of anesthesia.
Studies done in other disciplines of surgery and in vivo studies have shown that using corticosteroids
as adjuncts to local anesthetics have increased the duration of their action in supraclavicular brachial
plexus block, axillary block; sciatic nerve block in rats, and intercostal nerve block in sheep.
Adding corticosteroids would also have the added advantage of reduced swelling, pain, and trismus
owing to an attenuated inflammatory response.
Sizeable research in similar lines has not been done specifically to Oral and Maxillofacial Surgery.
Lignocaine is the gold standard drug of choice for local anesthesia in oral surgery when coupled
Dexamethasone forms a drug combination that deserves testing.
The current study aims to fill the void of insufficient research and test the effect of Dexamethasone
added to Lignocaine with Adrenaline on depth and duration of anesthesia, reduction in swelling,
trismus, pain, and improved mouth opening in patients undergoing impacted third molar surgeries.
 
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