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. 2018 Sep 7;3(3):174-178.
doi: 10.14744/eej.2018.70299. eCollection 2018.

Fracture Resistance of Endodontically Treated Anterior Teeth Restored with Different Post Systems: An In Vitro Study

Abdulrahman Fadag  1 , Maged Negm  1 , Abdulaziz Samran  2 , Ahlam Samran  2 , Giraldine Ahmed  1 , Ali Alqerban  3 , Mutlu Özcan  4
Affiliations

Fracture Resistance of Endodontically Treated Anterior Teeth Restored with Different Post Systems: An In Vitro Study

Abdulrahman Fadag et al. Eur Endod J. .

Abstract

Objective: This in vitro study aimed to evaluate the fracture resistance of endodontically treated maxillary central incisors with different post systems.

Methods: Fifty-six extracted intact maxillary permanent central incisors were used, treated endodontically (except for the control group), and distributed into the following seven test groups (n=8) depending on the post type: UHT (control group: root-filled teeth without endodontic post), ZRP (prefabricated zirconia post), GFP (prefabricated glass fiber post), CFP (prefabricated carbon fiber post), CPC (custom-made cast post and core), TIP (prefabricated titanium post), and MIP (prefabricated mixed post). The specimens were loaded in a universal testing machine until fracture occurrence. Failure loads were then analyzed with one-way analysis of variance (ANOVA), followed by multiple comparisons by using Tukey's honest significant difference test (α=0.05).

Results: Mean (SD) failure loads for groups ranged from 524±73.2 N for CPC to 764.1±156 N for GFP. One-way ANOVA showed significant differences in terms of fracture resistances among groups (P<0.001). Tukey's honest significant difference test showed significant differences in fracture resistance within groups (P≤0.05), whereas no difference was observed between the UHT (control group) and CFP and CPC groups (P≥0.05).

Conclusion: Endodontically treated teeth restored with zirconia post, glass fiber post, titanium post, or mixed post were more resistant to fracture loads compared with those that were not restored (control group) or restored with either carbon fiber post or cast post and core.

Keywords: Cast posts; fiber posts; fracture resistance; titanium posts; zirconia posts.

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Conflict of interest statement

Disclosures Conflict of interest: No conflict of interest was declared by the authors.

Figures

Figure 1
Figure 1
Schematic view of the apparatus for fracture testing with a specimen mounted in the universal testing machine at angle of 135° relation to the long axis of the posts
Figure 2
Figure 2
Fracture patterns and the frequency of each pattern in study groups
Figure 3
Figure 3
The overall fracture strength (in N) of the test groups ranked from highest to lowest
See this image and copyright information in PMC

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