الفهرس 
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Abstract
This study assessed the impact of three distinct surface treatments on the adhesive strength of prefabricated glass fibre posts and individually fabricated PEEK posts. The bond strength was assessed using a push-out test.
A total of sixty recently excised upper central incisor teeth with single roots were chosen. All root canals underwent endodontic treatment following the normal protocol. Subsequently, the samples were separated into two main groups, each consisting of 30 samples, based on the type of posts utilised. The initial group (G) was repaired using pre-fabricated glass fibre post (Glassix plus radiopaque) (n=30), while the second group (P) was repaired using individually crafted PEEK (n=30).The groups were divided into three subgroups, each consisting of 10 samples, based on the type of surface treatment performed. Subgroup SB involves the process of sandblasting using Aluminum-oxide (AL2O3) particles with a diameter of 50 µm. On the other hand, subgroup SE involves etching using sulfuric acid with a concentration of 98%. High etching was performed using a solution containing 9.5% hydrofluoric acid, followed by the application of a silane coupling agent.
The samples were cut into three pieces (each with a thickness of 2mm) using the IsoMet 4000 microsaw (Buehler, USA). The sections were taken from the coronal to apical direction and then submitted to a push-out test using a universal test machine.
Data were collected, tabulated and statistically analyzed with the following conclusions:
(1) The most effective method to enhance bond strength is to etch the PEEK post using 98% sulfuric acid as a surface treatment.
(2) The optimal surface treatment to improve bond strength involves etching the glass fibre post with hydrofluoric acid followed by silanization.
(3) The bond strength of the glass fibre post was greater than that of the PEEK post.
Clinical recommendations:
The choice of post surface treatment is contingent upon the specific type of post:
For PEEK posts, the recommended surface treatment is etching using 98% sulfuric acid.
For glass fibre posts, the recommended surface treatment is etching with 9.5% hydrofluoric acid followed by silanization.