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Information Journal Paper

Title

STRESS ANALYSIS IN MANDIBULAR MOLARS RESTORED WITH CAST AND PRE-FABRICATED POST-AND-CORES USING FINITE ELEMENT TECHNIQUE

Author(s)

MAHMOODI MOJTABA | SAEIDI ALI REZA | GANJALIKHAN NASAB SAYED ABDOLREZA | HASHEMIPOOR MARYAMOSADAT | Issue Writer Certificate 

Pages

  355-365

Abstract

 Introduction: The main factor involved in the failure of endodontic ally treated teeth is crown reconstruction rather than root canal treatment itself. The present study compared stress distribution in pre-fabricated and cast post-and-cores by FINITE ELEMENT ANALYSIS. In addition, the effect of post material was evaluated.Materials and Methods: In this cross-sectional descriptive-analytical study, an extracted sound human mandibular second molar was embedded in an acrylic resin cylindrical mold. Axial crosssections were prepared by abrasion and photographed; the images were transferred into a computer software program and a three-dimensional solid model of the tooth was prepared. A load of 10.43 MPa was applied on a 23-mm2 surface area of the occlusal surface at an angle of 45o. Finally, different restoration models for pre-fabricated and cast posts were designed and the effect of post material was analyzed.Results: Cast posts generated less stresses compared to pre-fabricated posts; however, prefabricated posts were more conservative form the stress location viewpoint. Regarding stress concentration, gold posts were more favorable in comparison to titanium posts because stress concentration in gold posts takes place in the cervical region, so that if root failure occurs, reconstruction is possible.Conclusion: Cast posts result in less stress in roots compared to pre-fabricated posts. Except for gold cast posts, all other cast posts are more dangerous in relation to stress distribution.

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    APA: Copy

    MAHMOODI, MOJTABA, SAEIDI, ALI REZA, GANJALIKHAN NASAB, SAYED ABDOLREZA, & HASHEMIPOOR, MARYAMOSADAT. (2012). STRESS ANALYSIS IN MANDIBULAR MOLARS RESTORED WITH CAST AND PRE-FABRICATED POST-AND-CORES USING FINITE ELEMENT TECHNIQUE. JOURNAL OF ISFAHAN DENTAL SCHOOL, 7(4), 355-365. SID. https://sid.ir/paper/126156/en

    Vancouver: Copy

    MAHMOODI MOJTABA, SAEIDI ALI REZA, GANJALIKHAN NASAB SAYED ABDOLREZA, HASHEMIPOOR MARYAMOSADAT. STRESS ANALYSIS IN MANDIBULAR MOLARS RESTORED WITH CAST AND PRE-FABRICATED POST-AND-CORES USING FINITE ELEMENT TECHNIQUE. JOURNAL OF ISFAHAN DENTAL SCHOOL[Internet]. 2012;7(4):355-365. Available from: https://sid.ir/paper/126156/en

    IEEE: Copy

    MOJTABA MAHMOODI, ALI REZA SAEIDI, SAYED ABDOLREZA GANJALIKHAN NASAB, and MARYAMOSADAT HASHEMIPOOR, “STRESS ANALYSIS IN MANDIBULAR MOLARS RESTORED WITH CAST AND PRE-FABRICATED POST-AND-CORES USING FINITE ELEMENT TECHNIQUE,” JOURNAL OF ISFAHAN DENTAL SCHOOL, vol. 7, no. 4, pp. 355–365, 2012, [Online]. Available: https://sid.ir/paper/126156/en

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