EVALUATING STRESS DISTRIBUTION PATTERN IN PERIODONTAL LIGAMENT OF MAXILLARY INCISORS DURING INTRUSION ASSESSED BY THE FINITE ELEMENT METHOD

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SALEHI PARISA; GERAMI ALAHYAR; NAJAFI AMIRHOSEIN; TORKAN SEPIDEH

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Paper Information

Journal: JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES) Year:2015 | Volume:16 | Issue:4 Page(s): 314-322

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Title

EVALUATING STRESS DISTRIBUTION PATTERN IN PERIODONTAL LIGAMENT OF MAXILLARY INCISORS DURING INTRUSION ASSESSED BY THE FINITE ELEMENT METHOD

Author(s)

SALEHI PARISA | GERAMI ALAHYAR | NAJAFI AMIRHOSEIN | TORKAN SEPIDEH | Issue Writer Certificate

Keywords

FINITE ELEMENT METHOD

INTRUSION

MINISCREW

Abstract

Statement of the Problem: The use of MINISCREWs has expedited the true maxillary incisor INTRUSION and has minimized untoward side effects such as labial tipping.Purpose: The aim of this study was to assess the stress distribution in the periodontal ligament of maxillary incisors when addressed to different models of INTRUSION mechanics using MINISCREWs by employing FINITE ELEMENT METHODs. The degree of relative and absolute INTRUSION of maxillary incisors in different conditions was also evaluated.Materials and Method: Finite element model of maxillary central incisor to first premolar was generated by assembling images obtained from a three-dimensional model of maxillary dentition. Four different conditions of INTRUSION mechanics were simulated with different placement sites of MINISCREWs as well as different points of force application. In each model, 25-g force was applied to maxillary incisors via MINISCREWs.Results: In all four models, increased stress values were identified in the apical region of lateral incisor. Proclination of maxillary incisors was also reported in all the four models. The minimum absolute INTRUSION was observed when the MINISCREW was placed between the lateral incisor and canine and the force was applied at right angles to the archwire, which is very common in clinical practice.Conclusion: From the results yield by this study, it seems that the apical region of lateral incisor is the most susceptible region to root resorption during anterior INTRUSION. When the minimum flaring of maxillary incisors is required in clinical situations, it is suggested to place the MINISCREW halfway between the roots of lateral incisor and canine with the force applied to the archwire between central and lateral incisor. In order to achieve maximum absolute INTRUSION, it is advised to place MINISCREW between the roots of central and lateral incisors with the force applied at a right angle to the archwire between these two teeth.

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APA: Copy

SALEHI, PARISA, GERAMI, ALAHYAR, TORKAN, SEPIDEH, & NAJAFI, AMIRHOSEIN. (2015). EVALUATING STRESS DISTRIBUTION PATTERN IN PERIODONTAL LIGAMENT OF MAXILLARY INCISORS DURING INTRUSION ASSESSED BY THE FINITE ELEMENT METHOD. JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES), 16(4), 314-322. SID. https://sid.ir/paper/673978/en

Vancouver: Copy

SALEHI PARISA, GERAMI ALAHYAR, TORKAN SEPIDEH, NAJAFI AMIRHOSEIN. EVALUATING STRESS DISTRIBUTION PATTERN IN PERIODONTAL LIGAMENT OF MAXILLARY INCISORS DURING INTRUSION ASSESSED BY THE FINITE ELEMENT METHOD. JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES)[Internet]. 2015;16(4):314-322. Available from: https://sid.ir/paper/673978/en

IEEE: Copy

PARISA SALEHI, ALAHYAR GERAMI, SEPIDEH TORKAN, and AMIRHOSEIN NAJAFI, “EVALUATING STRESS DISTRIBUTION PATTERN IN PERIODONTAL LIGAMENT OF MAXILLARY INCISORS DURING INTRUSION ASSESSED BY THE FINITE ELEMENT METHOD,” JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES), vol. 16, no. 4, pp. 314–322, 2015, [Online]. Available: https://sid.ir/paper/673978/en

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