Year : 2019

Volume : Volume 10

Issue : Issue 2

Address for correspondence :
Dr. Vikram Shetty.
drvikramshetty@yahoo.co.in

Abstract

Background:  To investigate stress distribution patterns at the root apex of maxillary lateral incisor having various types of root morphologies with regard to application of orthodontic forces in the vertical plane using the finite element method.  Materials and Methods: Finite element models of maxillary lateral incisor with different root morphologies (normal, short, long, blunt, dilacerated and pipette) were constructed and orthodontic forces in vertical direction (Intrusion & Extrusion) were applied to the tooth axis at the bracket level.  Result: On application of extrusive force, significantly increased stress pattern was seen at the root apex with pipette, dilacerated and long shaped root morphology respectively and maxillary lateral incisor with blunt and short root morphology shows increased stress distribution pattern at the root apex during intrusion.  Conclusion: The current study concluded that the maxillary lateral incisor with deviated root morphology are at higher risk of root resorption due to increased stresses at the root apex.

Keywords: Root morphology; Maxillary lateral incisor; Finite element model.