Fracture resistance of endodontically treated molars restored with polyethylene fiber and different posts

The purpose of this study was to compare the fracture strength and mode of teeth restored with fiber/titanium post, polyethylene fiber, and adhesive composite. The mesial, distal, and palatal walls of human maxillary molar teeth were removed, so that only the buccal wall remained. Group 1, with cari...

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Bibliographic Details
Published in:Journal of adhesion science and technology 2014-10, Vol.28 (19), p.1958-1969
Main Authors: Kara Tuncer, Aysun, Haznedaroğlu, Faruk, Tuncer, Safa
Format: Article
Language:English
Subjects:
Adhesives
endodontically treated teeth
fiber post
Fibers
Fracture mechanics
fracture mode
fracture strength
Mechanical properties
Polyethylene
polyethylene fiber
Polyethylenes
Restoration
Teeth
Titanium
Walls
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Summary:The purpose of this study was to compare the fracture strength and mode of teeth restored with fiber/titanium post, polyethylene fiber, and adhesive composite. The mesial, distal, and palatal walls of human maxillary molar teeth were removed, so that only the buccal wall remained. Group 1, with caries-free maxillary molars, was used as a positive control group and the remaining groups were restored as follows: group 2, with only adhesive composite; group 3, with polyethylene fiber and adhesive composite; group 4, with fiber post and adhesive composite; group 5, with fiber post, polyethylene fiber, and adhesive composite; group 6, with titanium post and adhesive composite; and group 7, with titanium post, polyethylene fiber, and adhesive composite. A universal testing machine was used for fracture tests. Compressive loads were applied at an angle of 90 degrees on the occlusal surface of the specimens at crosshead speed of 1 mm/min until fracture occurred. Kruskal-Wallis and Mann-Whitney U tests were adopted for statistical analysis. The study shows that, based on the fracture strength, the group of teeth that were restored with glass fiber post, polyethylene fiber, and adhesive composite has the most significant improvement over all the other teeth groups. Based on the fracture mode, the teeth groups restored with only glass fiber post, adhesive composite, polyethylene fiber, and adhesive composite have relatively more restorable fractures observed.
ISSN:0169-4243
1568-5616
DOI:10.1080/01694243.2014.938453