Adhesion of 3D-Printed Versus Milled Resin Posts to Composite Resin Core Build-Up Material: Influence of Surface Treatments.
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| Title: | Adhesion of 3D-Printed Versus Milled Resin Posts to Composite Resin Core Build-Up Material: Influence of Surface Treatments. |
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| Authors: | Alanazi, Khalid K.1 (AUTHOR) ali.alqahtani@psau.edu.sa, Robaian Alqahtani, Ali1,2 (AUTHOR), Alshehri, Abdullah Mohammed1,3 (AUTHOR), Alqahtani, Abdullah Ali1,4 (AUTHOR), Almudahi, Abdulellah1,5 (AUTHOR), Al-Mansour, Omar Abdulaziz1,2 (AUTHOR), Al-Harbi, Nawaf Abdullah2 (AUTHOR), Alqahtani, Sultan Sahman Abdulrahman3 (AUTHOR), Raffat Hussein, Eman Mohamed4 (AUTHOR), Soliman, Tarek Ahmed1,5 (AUTHOR) t.soliman@psau.edu.sa |
| Source: | Polymers (20734360). Jun2025, Vol. 17 Issue 12, p1711. 11p. |
| Subjects: | Core materials, Surface preparation, Statistical significance, Two-way analysis of variance, Surfaces (Technology), Bond strengths |
| Abstract: | Background: There are very few studies in literature concerning the bonding between 3D-printed resin posts and the core build-up material. This study aimed to evaluate and compare the adhesion of 3D-printed and milled resin posts to composite resin core build-up material following different surface treatments. Methods: Three types of resin posts were utilized in this study: ready-made glass-reinforced fiber post (3M ESPE, Germany), milled PEEK POST (Bredent, Germany), and 3D-printed resin post (CROWNTEC, Saremco Dental AG, Switzerland). Each type of post was categorized into three groups based on surface treatments: C: untreated surfaces; SB: Air abrasion with 50 μm aluminum oxide particles was applied to the posts' surfaces.; HO: the posts' surfaces were immersed in 30% H2O2 for 5 min. A dual-cured composite resin (Grandio DC; VOCO) was utilized for core build-up in each group to evaluate adhesion through the push-out bond strength test. The modes of failure were analyzed, and the surface morphology of the post was characterized using SEM. Data were analyzed using a two-way analysis of variance (ANOVA) along with Tukey's test. Results: The two-way ANOVA indicated a significant effect for surface treatment (F = 583.54, p < 001), post type (F = 79.96, p < 0.001), and their interactions (F = 265.74, p < 0.001). Regarding 3D-printed resin post, 30% H2O2 for 5 min recorded the highest statistically significant bond strength value (13.11 ± 1.61) compared to other groups. Regarding the milled PEEK post, the air particle abrasion recorded the highest statistically significant value (23.88 ± 1.66) compared to other groups. Adhesive failure was the predominant failure type, with an occurrence rate of 70.35%. Mixed failure was noted in 24.07% of the cases, with a significant prevalence in the PEEK post within the air particle abrasion group (58.3%). Cohesive failure was noted in 5.54% of cases, with a significant prevalence in the air particle abrasion group, occurring at rates of 16.6% in the resin fiber post group and 33.3% in PEEK posts. Conclusions: Air particle abrasion significantly improved the push-out bond strength of milled PEEK posts, but it did not have a similar effect on the 3D-printed resin posts. The application of 30% H2O2 for 5 min to 3D-printed resin post enhanced the adhesion to core build-up material. The manufacturing method of posts, the surface treatments utilized, and their interactions affect the interfacial bond strength between posts and the composite resin core build-up material. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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