Comparison of the effect for fracture resistance of different coronally extended post length with two different post materials

Abstract

Aims and Objectives: To compare the effect for fracture resistance of different coronally extended post length with two different post materials. Materials and Methods: One hundred and sixty endodontically treated maxillary central incisors embedded in acrylic resin with decoronated root portion were taken for the study. The postspaces were prepared according to standard protocol. The samples were divided into two groups according to the post material: glass-fiber post and Quartz fiber post. These groups were further subdivided on the basis of coronal extension of 4 and 6 mm for glass fiber and Quartz fiber posts, respectively. The posts were then luted with dual-polymerizing resin cement followed by core buildup. Samples were subjected to increasing compressive oblique load until fracture occurred in a universal testing machine. Data were analyzed with one-way ANOVA and independent Student's t -test. Analysis was done using SPSS version 15 (SPSS Inc., Chicago, IL, USA) Windows software program. Results: Glass fiber post with coronal extension of 4 mm (182.8 N) showed better results than with 6-mm length (124.1 N). Similarly, in quartz fiber posts group, 4-mm postlength (314 N) was better when compared with 6 mm (160 N). The 4-mm coronal extension of quartz fiber post displayed superior fracture resistance. Conclusions: Glass fiber posts showed better fracture resistance than Quartz fiber posts. 4-mm coronal length showed more fracture resistance than 6 mm.

Fracture Resistance of Over Flared Endodontically Treated Central Incisors Restored with Multiple Prefabricated and Custom-Made Glass Fiber Posts

“…After group 3, group 1 exhibited a high fracture strength. In prefabricated glass fiber posts, the glass fiber content is at the maximum possible level (65%), which might affect the mechanical properties of the post, including an increase in stiffness, which increases the fracture resistance of the tooth [ 38 ]. In addition to this favorable property, smaller cement thickness, improved adaptation, and optimal pull-out bond strength should also be considered as other advantages of this type of post.…”

Bond strength and fracture resistance of flowable bulk fill composite posts and cores in endodontically treated teeth

“…The fracture resistances of both groups were approximately 600 N, much higher than the human incisal maximum biting force, which is lower than 200 N.[21819]…”

Fracture resistance of endodontically treated maxillary premolars with a longer single post and shorter double posts of different sizes: An in vitro study

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