Effect of different surface treatments on the bond strength of milled polyetheretherketone posts
| Autor: | Mazen A. Attia, Tamer E. Shokry, Mohamed Abdel-Aziz |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Dental Stress Analysis
Universal testing machine Materials science Acid etching Scanning electron microscope Bond strength Polymers Surface Properties Significant difference Anova test Dental Bonding 030206 dentistry Ketones Abrasion (geology) Polyethylene Glycols Resin Cements 03 medical and health sciences Benzophenones 0302 clinical medicine Materials Testing Peek Humans Oral Surgery Composite material Post and Core Technique |
| Zdroj: | The Journal of prosthetic dentistry. 127(6) |
| ISSN: | 1097-6841 |
| Popis: | Statement of problem Polyetheretherketone (PEEK) can be used as a framework material for removable and fixed dental prostheses. However, information about the use of PEEK as a post-and-core restoration is scarce. Purpose The purpose of this in vitro study was to evaluate the effect of different surface treatments on the push-out bond strength of milled polyetheretherketone posts to resin cement. Material and methods Sixty intact human maxillary central incisors were selected and endodontically treated, and standardized post spaces were prepared. Sixty PEEK posts were milled from a prefabricated PEEK blank by using a computer-aided design and computer-aided manufacturing (CAD-CAM) system and divided into 3 groups (n=15) according to the surface treatment: acid etching by using 98% sulfuric acid (AE); airborne-particle abrasion by using 50-μm Al2O3 (AA); nonthermal plasma treatment (NTP); in addition, PEEK posts (n=15) received no treatment (NT) and served as a control. All posts were bonded by using a self-adhesive resin cement. Three sections (coronal, middle, and apical) were obtained for each specimen. Push-out bond strength measurements (MPa) for each section were recorded by using a universal testing machine at a crosshead speed of 0.5 mm/min until failure occurred. The post-cement interfaces and failure modes were evaluated by using scanning electron microscopy. The data obtained were statistically analyzed by using 1-way ANOVA and the pair-wise Tukey (HSD) test to study the difference between group mean values (α=.05). Results The overall mean ±standard deviation of the push-out bond strength was 11 ±2 MPa for AE group, 6 ±1 MPa for AA group, 5 ±1 MPa for NTP group, and 3 ±1 MPa for NT group. A statistically significant difference was found among all groups subjected to different surface treatments as indicated by the ANOVA test (P .05). Moreover, a significant difference was observed among all root sections (P Conclusions Surface treatment of PEEK posts with 98% sulfuric acid for 60 seconds showed significantly higher bond strength values than those in other groups. The bond strength of PEEK posts to resin cement was significantly higher in the coronal section than that in other sections. |
| Databáze: | OpenAIRE |
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