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Kumar, Pradeep
- An Evaluation of the Stress Pattern Distribution for Orthodontic Tooth Movements - A Finite Element Study
Abstract Views :318 |
PDF Views:99
Authors
Affiliations
1 Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh, IN
2 Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh,, IN
3 Department of Oral & Maxillofacial Pathology, Kanti Devi Dental College, Uttar Pradesh, IN
4 Department of Periodontology, Bhojia Dental College, Himachal Pradesh, IN
1 Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh, IN
2 Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh,, IN
3 Department of Oral & Maxillofacial Pathology, Kanti Devi Dental College, Uttar Pradesh, IN
4 Department of Periodontology, Bhojia Dental College, Himachal Pradesh, IN
Source
Dental Journal of Advance Studies, Vol 3, No 2 (2015), Pagination: 91-96Abstract
This study was conducted to evaluate stress pattern distribution in the periodontal ligament during various orthodontic tooth movements. Methods:A 3 dimensional FEM model of upper central incisor was developed from C.T scan images of the skull excluding the mandible. The principal stress obtained on the periodontal ligament due to various orthodontic loadings (tipping, bodily movement, intrusion, extrusion and rotations) were tested. Results: Intrusion, extrusion and rotation produced stresses concentrated at apex of ischolar_main. Bodily movement and tipping forces produce stress concentrated at the alveolar crest and not at the ischolar_main apex. Conclusion:Clinical implications of this study suggests that if the clinician is concerned about placing heavy stresses on the ischolar_main apex then vertical and rotational forces must be applied with caution.Keywords
Finite Element Method, Mechanical Stress , Root Resorption.Full Text
References
- Rudolph DJ, Willes PMG, Sameshima GT. A finite element model of apical force distribution from orthodontic tooth movement.Angle Orthod 2001; 71(2):127-31.
- Thilander B, Rygh P, Reitan K Tissue reactions in orthodontics. In : GraberTM ,Vanarsdall RL,Vig KWL, eds. Orthodontics : Current principles and techniques. 4th ed. St Louis , Mo: Elsevier Inc; 2005:174-78.
- Mahesh Y, Ravidran NS, Balasubramanian MR. Holographic analysis of the initial canine displacement produced by four different retraction springs.Angle Orthod 2009; 00:368-72.
- Choy K, Pae EK, ParkY, Kim KH, Burstone CJ. Effect of ischolar_main and bone morphology on the stress distribution in periodontal ligament.Am J Orthod Dentofacial Orthop 2000; 117(1): 98105.
- Jones ML, Hickman J, Middleton J, Knox J, Volp C. A validated finite element method study of orthodontic tooth movement in human subject. J Orthod 2001; 28(1):29-38.
- Rex S, Balasubramanian, Ravi K. Evaluation of apical force distribution for orthodontic tooth movements–a finite element analysis. JIOS 2010;44:38-42.
- Sameshima GT , Sinclair PM , Predicting and preventing ischolar_main resorption I: diagnostic factors. Am J Orthod Dentofacial Orthop 2001; 119:505-10.
- Yoshida N, Jost-Brinkmann PG, Koga Y, Mimaki N, Kobayashi K. Experimental evaluation of initial tooth displacement, centre of resistance, and centre of rotation under the influence of an orthodontic force. Am J Orthod Dentofacial Orthop 2001; 120(2):190-197.
- McGuinness NJ,WilsonAN, Jones ML, Middleton J.Astress analysis under periodontal ligament under various orthodontic loadings. Eur J Orthod 1991; 13(3):231-42.
- Wilson AN, Middleton J, Jones ML, McGuinness NJ. The finite element analysis of stress in the periodontal ligament when subject to vertical orthodontic forces. Br J Orthod 1994; 21(2):161-7.
- Geramy Allahyar. Initial stress produced in the periodontal membrane by orthodontic loads in the presence of varying loss of alveolar bone: a three-dimensional finite element analysis. Eur J Orthod 2002; 24(1):21-33.
- Brian W lee. Relationship between tooth movement rate and estimated pressure applied. J Dent Research 1965; 44:1053.
- Cobo J, Sicilia A, Argüelles J, Suárez D, Vijande M. Initial stress induced in periodontal tissue with diverse degrees of bone loss by an orthodontic force: tridimensional analysis by means of the finite element method.Am J Orthod Dentofacial Orthop 1993; 104(5): 448-54.
- Dental Sexual Dimorphism
Abstract Views :207 |
PDF Views:83
Authors
Manisha Sharma
1,
Sameer Gupta
2,
Avdesh Sharma
3,
Vandana Bhardwaj
3,
Pooja Sharma
2,
Pradeep Kumar
2
Affiliations
1 Department of Oral & Maxillofacial Pathology, Kanti Devi Dental College, Uttar Pradesh, IN
2 Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh, IN
3 Department of Conservative & Endodontics, PDMDC, Haryana, IN
1 Department of Oral & Maxillofacial Pathology, Kanti Devi Dental College, Uttar Pradesh, IN
2 Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh, IN
3 Department of Conservative & Endodontics, PDMDC, Haryana, IN
Source
Dental Journal of Advance Studies, Vol 3, No 3 (2015), Pagination: 135-139Abstract
Objective: Forensic odontology is a lineage that deals in relation to jaws and teeth as evidence to law and justice. Tooth serves as a prime importance in the context of sex identification. (1)To investigate whether there exists any correlation between odontometric measures and sexual dimorphism. (2) To compare the inter-canine arch width of mandible. (3) To evaluate the mean value of standard mandibular canine index. Method: This study is an odontometric analysis performed intra-orally with a sample of 150 teeth (75male:75 female) on students of Kanti Devi Dental college, Mathura. Mesiodistal dimensions of mandibular right and left canine with a caliper device and statistical analysis for significance of sexual dimorphism was done with student's t test. Result: The result showed that sexual dimorphism is significant in relation to mesiodistal diameter of canine. Furthermore, there was statistical significant difference in tooth crown dimension between males and females where the males showed higher mean values. Conclusion: The study show definite statistically significant sexual dimorphism hence they can play significant role in providing expertise in civil&criminal proceedings to ensure that forensic dentistry will remain viable component of forensic medicine.Keywords
Dental Sexual Dimorphism, Odontometry, Canine, Forensic.Full Text