Journal of Forensic Dental Sciences
Users Online: 43 
Home Print this page  Email this page Small font size Default font size Increase font size
Wide layoutNarrow layoutFull screen layout
  Home | About JFDS | Editorial Board | Search | Ahead of print | Current Issue | Archives | Instructions | Subscribe | Online submission | Contact us | Advertise | Login 
Year : 2011  |  Volume : 3  |  Issue : 1  |  Page : 19-22

Reliability of age estimation using Demirjian's 8 teeth method and India specific formula

Department of Oral Medicine and Radiology, Meenakshi Ammal Dental College, Chennai, Tamil Nadu, India

Correspondence Address:
V Jayanth Kumar
Department of Oral Medicine and Radiology, Meenakshi Ammal Dental College, Alapakkam Main Road, Maduravoyal, Chennai - 600 095, Tamil Nadu
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0975-1475.85289

Rights and Permissions

Introduction: The estimation of the age of a person has been an archaic exercise, and since decades even dentists have contributed to this science with several methods through radiography. The tooth with its developmental stages provides us with a non-invasive modality to determine the age of the person. Aim: To evaluate the reliability of age estimation using Demirjian's 8 teeth method following the French maturity scores and India specific formula. Materials and Methods: The study was conducted on 121 archived digital orthopantamographs which were predominantly pre-treatment orthodontic radiographs from patients without any obvious developmental anomalies. The radiographs were divided into two gender specific groups and further sub-divided into two smaller groups of 7-16 years and 16.1-23 years. The radiographs were evaluated as per Demirjian's criteria and age was calculated using the formula developed for the Indian population. Results: The results showed that the mean absolute error for the study sample was 1.18 years; in 57.9% of cases the error rate was within ±1 year. The mean absolute error in males (7-16 years) was 1.2 years; in males (16.1-23 years) was 1.3 years; in females (7-16 years) was 0.95 years and in females (16.1-23 years) was 1.16 years. Conclusion: The age estimation using this method narrows down the error rate to just over one year making this method reliable. However the inclusion of third molar increases the error rates in the older individuals within the sample.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded860    
    Comments [Add]    
    Cited by others 3    

Recommend this journal