Home About us Editorial board Ahead of print Current issue Archives Submit article Instructions Subscribe Search Contacts Login 
  • Users Online: 214
  • Home
  • Print this page
  • Email this page
ORIGINAL ARTICLE
Year : 2008  |  Volume : 20  |  Issue : 1  |  Page : 14-18

Co-relation of variables as determined from panoramic radiograph and evaluating their significance in eruption of permanent mandibular third molar


Department of Oral Medicine and Radiology, Padmashree Dr. D. Y. Patil Dental College and Hospital, Nerul, Navi Mumbai, India

Correspondence Address:
Kushal Amin
11/4 Hari Smruti, Vishwabharti society, Juhu lane, Andheri (w), Mumbai - 400058
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-1363.44355

Rights and Permissions

Purpose of the Study: Purpose of the study is to investigate whether the variables associated with the permanent mandibular third molar (PMM3) and arch dimensions could be co-related and significantly differentiated between a fully erupted and mesially impacted PMM3 among a set of Indian population. Study Design: A standardized panoramic radiograph was taken of subjects of age 21 years and above. Patients with missing tooth from mandibular arch, subjects undergoing or having history of orthodontic treatment, subjects having disto-angular, horizontal or vertical impacted PMM3 were excluded from the study. Subjects were divided into 2 groups: (1) mesially impacted PMM3 and (2) vertically erupted PMM3. Following measurements were taken from acetate paper tracing of standardized panoramic radiograph: (1) Angulation of long axis of PMM3 to permanent mandibular second molar (theta) (2) Angulation of PMM 3 to base of mandible (theta 2) (3) Gonial angle (theta 3) (4) Mesio-distal width of PMM 3 (5) Retro molar space. From these measurements Ganss ratio (retro molar space /PMM3 crown width.) was calculated. Results and Conclusion: Results revealed that angle theta 1, angle theta 2, retro molar space and Ganss ratio were positively co-related and highly significant variables associated with the mesially and vertically erupted teeth as measured on panoramic radiograph. Using these variables a long-term study can be carried out to predict the ultimate position of lower third molar in the arch so that if there is a probability of the tooth being impacted at a later age, a prophylactic germectomy can be performed at an early age.


[FULL TEXT] [PDF]*
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
    Viewed919    
    Printed41    
    Emailed0    
    PDF Downloaded277    
    Comments [Add]    

Recommend this journal