FINITE ELEMENT ANALYSIS OF DISPLACEMENT AND STRESS PATTERN ON MAXILLARY IMPACTED CANINE PLACED AT DIFFERENT HEIGHTS AND INCLINATIONS

Mahapara Jabeen Qari,
Anil Singla,
Harupinder Singh jaj,*
Vivek Mahajan,
Indu Dhiman,
Shikha Thakur

Abstract

INTRODUCTION: The failed eruption of tooth to its normal occlusion is termed as impacted. After third molar permanent maxillary canines are most commonly impacted. Maxillary canine plays an important role in creating good facial and smile esthetics. Finite element analysis is used as a solution for understanding biomechanical response AIMS AND OBJECTIVES: To evaluate the stress magnitude and displacement of maxillary impacted canines placed at different heights and inclinations using FEM. MATERIALS AND METHODS: FEM models comprising of palatally impacted canine housed in alveolar bone at different heights and inclinations were constructed using ANSYS software. Von Mises Stresses was recorded at apical, middle and cervical thirds of impacted canine. Displacement of impacted canine, lateral incisor and first premolar was measured and stress distribution of impacted canine, Lateral incisor and first premolar at different height and inclinations with force of varying magnitude measured. RESULTS: The stress distribution in the PDL was found to be highest in first premolar, lateral incisor followed by least in the palatally impacted maxillary canine and the rate of displacement was highest in first premolar followed by impacted canine and least in the lateral incisor. CONCLUSION: The stress generated in the PDL increases as the inclination of the impacted canine to the midline increases and the rate of tooth displacement decreases with the increase in inclination of palatally impacted canine.