FINITE ELEMENT ANALYSIS OF THE EFFECT OF PROXIMAL CONTOUR OF CLASS II COMPOSITE RESTORATIONS ON STRESS DISTRIBUTION

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MOGHADDAS MOHAMMAD JAVAD; AMERI HAMIDEH; ABACHIZADEH HOSSEIN

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Paper Information

Journal: JOURNAL OF DENTAL MATERIALS AND TECHNIQUES Year:2012 | Volume:1 | Issue:1 Page(s): 29-34

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Title

FINITE ELEMENT ANALYSIS OF THE EFFECT OF PROXIMAL CONTOUR OF CLASS II COMPOSITE RESTORATIONS ON STRESS DISTRIBUTION

Author(s)

MOGHADDAS MOHAMMAD JAVAD | AMERI HAMIDEH | ABACHIZADEH HOSSEIN | Issue Writer Certificate

Keywords

CLASS II

FINITE ELEMENT ANALYSIS

MATRIX BAND

POSTERIOR COMPOSITE

PROXIMAL CONTOUR

Abstract

Introduction: The aim of this study was to evaluate the effect of PROXIMAL CONTOUR of CLASS II composite restorations placed with straight or contoured MATRIX BAND using composite resins with different modulus of elasticity on stress distribution by finite element method.Methods: In order to evaluate the stress distribution of CLASS II composite restorations using finite element method, upper right first molar and second premolar were modeled. Proximal boxes were designed and restored with universal Z250 and packable P60 composite resins (3M ESPE) using two matrix systems: flat Tofflemire matrix and precurved sectional matrix. Finally models were evaluated under loads of 200 and 400 Newton at 90 degrees angle and the results were graphically illustrated in the form of Von Misses stresses.Results: In general the stress obtained under 400 Newton load was significantly greater than the stress of models under 200 Newton load. Von Misses stress distribution pattern of two different Z250 and P60 composites were very similar in all modes of loading and PROXIMAL CONTOUR. In all analyzed models there was a significant difference between models restored with Tofflemire matrix with flat contour and models restored with sectional matrix with curved contour. This difference was greater in first molar than second premolar.Conclusion: Use of a contoured MATRIX BAND results in less stress in CLASS II composite resin restorations.

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APA: Copy

MOGHADDAS, MOHAMMAD JAVAD, AMERI, HAMIDEH, & ABACHIZADEH, HOSSEIN. (2012). FINITE ELEMENT ANALYSIS OF THE EFFECT OF PROXIMAL CONTOUR OF CLASS II COMPOSITE RESTORATIONS ON STRESS DISTRIBUTION. JOURNAL OF DENTAL MATERIALS AND TECHNIQUES, 1(1), 29-34. SID. https://sid.ir/paper/335447/en

Vancouver: Copy

MOGHADDAS MOHAMMAD JAVAD, AMERI HAMIDEH, ABACHIZADEH HOSSEIN. FINITE ELEMENT ANALYSIS OF THE EFFECT OF PROXIMAL CONTOUR OF CLASS II COMPOSITE RESTORATIONS ON STRESS DISTRIBUTION. JOURNAL OF DENTAL MATERIALS AND TECHNIQUES[Internet]. 2012;1(1):29-34. Available from: https://sid.ir/paper/335447/en

IEEE: Copy

MOHAMMAD JAVAD MOGHADDAS, HAMIDEH AMERI, and HOSSEIN ABACHIZADEH, “FINITE ELEMENT ANALYSIS OF THE EFFECT OF PROXIMAL CONTOUR OF CLASS II COMPOSITE RESTORATIONS ON STRESS DISTRIBUTION,” JOURNAL OF DENTAL MATERIALS AND TECHNIQUES, vol. 1, no. 1, pp. 29–34, 2012, [Online]. Available: https://sid.ir/paper/335447/en

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