EFFECT OF THERMO-MECHANICAL LOAD CYCLING ON THE FRACTURE STRENGTH OF UPPER CENTRAL INCISOR RESTORED WITH THREE DIFFERENT TYPES OF GLASS-FIBER POSTS

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AKBARI MAJID; MOGHADDAS MOHHAMAD JAVAD; MAJIDINIA SARA

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Journal: Journal of Dental Medicine Year:2014 | Volume:27 | Issue:2 Page(s): 84-90

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Title

EFFECT OF THERMO-MECHANICAL LOAD CYCLING ON THE FRACTURE STRENGTH OF UPPER CENTRAL INCISOR RESTORED WITH THREE DIFFERENT TYPES OF GLASS-FIBER POSTS

Author(s)

AKBARI MAJID | MOGHADDAS MOHHAMAD JAVAD | MAJIDINIA SARA | Issue Writer Certificate

Keywords

ENDODONTICALLY TREATED TEETHQ2

STRENGTHQ2

POSTQ3

Abstract

Background and Aims: The aim of this study was to evaluate the fracture STRENGTH of restored teeth with three different types of E glass-fiber POSTs after thermo-mechanical loading.Materials and Methods: Sixty extracted upper central incisor human teeth, with similar size, were selected and divided into three groups (n=20). Endodontic treatment was done in all groups and crowns were sectioned from 2 mm above CEJ. Then one type of POSTs in each group (Anthogyr, Svensk, Hetco) cemented using Panavia cement and the crowns were restored with composite. The specimens in each group were thermocycled for 6000 cycles (5-55°C) and subject to 1200000 cycles of mechanical loadiong in an artificial mouth machine. Then the fracture STRENGTH was measured and data were analyzed using ANOVA and T-student test ( a=0.05).Results: The mean fracture STRENGTH in Hetco group before and after thermomechnical loading was 581.098±192.742 N and 564.74±213.59 N, in Anthogyr group was 664.358±135.878 N and 629.12±390.3 N and, in Svensk group was 780.258±379.133 N and 779.84±282.59 N, respectively. There was no significant difference between groups and also there was no significant difference in each group before and after thermo-mechanical loading (P>0.05).Conclusion: Restored teeth with Hetco fiber glass POST were similar in the fracture STRENGTH with that of two other POSTs after thermo-mechnical loading.

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APA: Copy

AKBARI, MAJID, MOGHADDAS, MOHHAMAD JAVAD, & MAJIDINIA, SARA. (2014). EFFECT OF THERMO-MECHANICAL LOAD CYCLING ON THE FRACTURE STRENGTH OF UPPER CENTRAL INCISOR RESTORED WITH THREE DIFFERENT TYPES OF GLASS-FIBER POSTS. JOURNAL OF DENTAL MEDICINE, 27(2), 84-90. SID. https://sid.ir/paper/25169/en

Vancouver: Copy

AKBARI MAJID, MOGHADDAS MOHHAMAD JAVAD, MAJIDINIA SARA. EFFECT OF THERMO-MECHANICAL LOAD CYCLING ON THE FRACTURE STRENGTH OF UPPER CENTRAL INCISOR RESTORED WITH THREE DIFFERENT TYPES OF GLASS-FIBER POSTS. JOURNAL OF DENTAL MEDICINE[Internet]. 2014;27(2):84-90. Available from: https://sid.ir/paper/25169/en

IEEE: Copy

MAJID AKBARI, MOHHAMAD JAVAD MOGHADDAS, and SARA MAJIDINIA, “EFFECT OF THERMO-MECHANICAL LOAD CYCLING ON THE FRACTURE STRENGTH OF UPPER CENTRAL INCISOR RESTORED WITH THREE DIFFERENT TYPES OF GLASS-FIBER POSTS,” JOURNAL OF DENTAL MEDICINE, vol. 27, no. 2, pp. 84–90, 2014, [Online]. Available: https://sid.ir/paper/25169/en

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