INFLUENCE OF INHOMOGENEOUS CROWNS ON STRESS DISTRIBUTION IN TOOTH ROOT AND CERVICAL MARGIN BY FINITE ELEMENT ANALYSIS

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MAHMOUDI MOJTABA; SAIDI ALI REZA; HASHEMIPOUR MARYAM ALSADAT; AMINI PARVIZ

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Journal: Journal of Mashhad Dental School Year:2017 | Volume:41 | Issue:2 Page(s): 147-158

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Title

INFLUENCE OF INHOMOGENEOUS CROWNS ON STRESS DISTRIBUTION IN TOOTH ROOT AND CERVICAL MARGIN BY FINITE ELEMENT ANALYSIS

Author(s)

MAHMOUDI MOJTABA | SAIDI ALI REZA | HASHEMIPOUR MARYAM ALSADAT | AMINI PARVIZ | Issue Writer Certificate

Keywords

CROWNQ3

IN-HOMOGENEOUSQ1

FINITE ELEMENT ANALYSISQ1

POST-COREQ1

MARGINQ3

Abstract

Introduction: In the post and core CROWN restorations, the significant mismatch in the mechanical properties of the CROWN and dentin leads to stress concentration at dentin and cervical MARGIN. A class of inhomogeneous materials (Functionally Graded Materials) has been proposed for dental CROWN to reduce the stresses at dentin and cervical MARGIN. The aim of the present study was to investigate the effect of inhomogeneous CROWNs on stress distribution in tooth root and cervical MARGIN by FINITE ELEMENT ANALYSIS.Materials & Methods: For the purpose of the study, a computer model of mandibular first premolar and its surrounding tissues, including periodontal ligament as well as cortical and trabecular bones were modeled. Homogeneous and inhomogeneous CROWNs were investigated by FINITE ELEMENT ANALYSIS and the stress distribution results were compared.Results: Alumina CROWN resulted in the highest stress at the remaining dentin and cervical MARGIN while inhomogeneous CROWN graded by index P=10 (FGM10) caused the lowest stress.Conclusions: FINITE ELEMENT ANALYSIS showed that, inhomogeneous CROWNs are preferred than homogeneous CROWNs. Inhomogeneous CROWNs tailored in an adequate order may reduce the stress concentration at dentin and cervical MARGINs and consequently reduce the possibility of root/restoration fracture.

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APA: Copy

MAHMOUDI, MOJTABA, SAIDI, ALI REZA, HASHEMIPOUR, MARYAM ALSADAT, & AMINI, PARVIZ. (2017). INFLUENCE OF INHOMOGENEOUS CROWNS ON STRESS DISTRIBUTION IN TOOTH ROOT AND CERVICAL MARGIN BY FINITE ELEMENT ANALYSIS. JOURNAL OF MASHHAD DENTAL SCHOOL, 41(2), 147-158. SID. https://sid.ir/paper/74039/en

Vancouver: Copy

MAHMOUDI MOJTABA, SAIDI ALI REZA, HASHEMIPOUR MARYAM ALSADAT, AMINI PARVIZ. INFLUENCE OF INHOMOGENEOUS CROWNS ON STRESS DISTRIBUTION IN TOOTH ROOT AND CERVICAL MARGIN BY FINITE ELEMENT ANALYSIS. JOURNAL OF MASHHAD DENTAL SCHOOL[Internet]. 2017;41(2):147-158. Available from: https://sid.ir/paper/74039/en

IEEE: Copy

MOJTABA MAHMOUDI, ALI REZA SAIDI, MARYAM ALSADAT HASHEMIPOUR, and PARVIZ AMINI, “INFLUENCE OF INHOMOGENEOUS CROWNS ON STRESS DISTRIBUTION IN TOOTH ROOT AND CERVICAL MARGIN BY FINITE ELEMENT ANALYSIS,” JOURNAL OF MASHHAD DENTAL SCHOOL, vol. 41, no. 2, pp. 147–158, 2017, [Online]. Available: https://sid.ir/paper/74039/en

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