Unit:
Κατεύθυνση Προσθετική (Κλινικές Ειδικεύσεις)Βιβλιοθήκη Οδοντιατρικής
Author:
Spyropoulos Dionysios
Supervisors info:
Φωτεινή Καμποσιώρα , Επίκουρη Καθηγήτρια, Τμήμα Οδοντιατρικής, Σχολή Επιστημών Υγείας, ΕΚΠΑ
Αλκιβιάδης Ζήσης, Καθηγητής, Τμήμα Οδοντιατρικής, Σχολή Επιστημών Υγείας, ΕΚΠΑ
Γρηγόρης Πολυζώης, Καθηγητής, Τμήμα Οδοντιατρικής, Σχολή Επιστημών Υγείας, ΕΚΠΑ
Original Title:
Επίδραση της επιφανειακής επεξεργασίας του υλικού BioHPP (PEEK) και της αποθήκευσης σε υδατικό περιβάλλον στην τελική συγκολλητική του ικανότητα με ρητινώδες υλικό
Translated title:
Influence of surface conditioning and water storage of material BioHPP (PEEK) on its final bonding potential with a resin composite material
Summary:
Introduction: PEEK (poly-ether-ether-ketone) is a high-melting thermoplastic polymeric material derived from the vast family of poly-aryl-ethyr-ketones. The material has unique mechanical properties that make it really popular in industrial applications such as aeronautics, automotive industry and electronics. Recently it was introduced in dentistry. However, PEEK’s chemical inertness and hydrophobic behavior make bonding process really hard.
Purpose: The purpose of this in-vitro study was to evaluate bonding potential of BioHPP (PEEK) with composite resin cement through assessment of shear bond strength.
Materials and Methods: Using a CAD-CAM system sixty disks were cut out of BioHPP round blanks (PEEK). The disks were embedded in Plexiglas hollow cylinders with the use of epoxy resin. All disks were polished (P600 grit) and divided to three groups (n=20/group) which were subjected to the following surface pretreatments: (A) Sandblasting with alumina with a mean particle size of 110μm (Rocatec Pre) and application of adhesive bonding agent visio.link (control group) (B) Sandblasting with silica modified alumina with a mean particle size of 30μm (Cojet), application of silane agent Espe Sil, followed by application of adhesive bonding agent Visio-Bond (C) Sandblasting with silica modified alumina with a mean particle size of 30μm (Cojet), application of silane containing primer-adhesive Clearfil Ceramic Primer, followed by application of adhesive bonding agent visio.link. A dual-curing composite resin cement (combo.lign) was luted to all treated surfaces. Each group was further divided to subgroups of 10 specimens each. Specimens were either stored in distilled water at 37°C for 3 days or for 30 days without further thermocycling. Specimens were then submitted to shear bond strength testing.
Results: Group (B) showed statistically significant difference with group (A) (control group). No significant difference was found between control group (A) and group (C), and neither between groups (B) and (C). Water storage condition had no significant influence on final bond strength.
Conclusions: Use of different conditioning protocols had a significant effect on final bond strength. On the other hand, no significant influence was observed for water storage conditions. Further research for results validation is deemed necessary.
Main subject category:
Health Sciences
Keywords:
Surface conditioning, Bonding potential, Poly-ether-ether-ketone, PEEK
Number of references:
115
