REVIEWS

Influence of primary tumor surgical margins on overall survival and local recurrence in patients with squamous cell carcinoma: meta-analysis
Abdulla Varoneckas, Mariam Varoneckaitė, Kotryna Rumšaitė, Marijus Leketas, Algirdas Lukošiūnas, Ričardas Kubilius
3-11

SCIENTIFIC ARTICLES

Effect of the combination of chemical-physical pretreatments for bonding PEEK to resin composites
Gretty Alonso-Martínez, Marine Ortiz-Magdaleno, Norma Verónica Zabala-Alonso, Paula Sánchez-Robles, Mariana Gutiérrez-Sánchez, Juan Carlos Flores-Arriaga, Gabriel Fernando Romo-Ramírez
12-17

REVIEWS

Effect of a CAD-CAM sinus surgical template on the outcome of sinus augmentation. A systematic review
Arezoo Mazaheri Nazarifar, Hamidreza Mohamad Sharifi, Maliheh Habib Khodaei,
Amin Davoudi
18-23

CASE REPORTS

Maxillary rhinosinusitis of odontogenic origin: a case series
Tulio Bonna Pignaton, Rubens Spin-Neto, Guilherme José Pimentel Lopes de Oliveira, Carlos Eduardo de Almeida Ferreira
24-28

Stomatologija 2024; 26 (1): 12-7 278 KB

Effect of the combination of chemical-physical pretreatments for bonding PEEK to resin composites

Gretty Alonso-Martínez¹, Marine Ortiz-Magdaleno¹, Norma Verónica Zabala-Alonso², Paula Sánchez-Robles¹, Mariana Gutiérrez-Sánchez³, Juan Carlos Flores-Arriaga⁴, Gabriel Fernando Romo-Ramírez¹

Summary

Objective. Surface pretreatment of polyetheretherketone (PEEK) is necessary to increase the bond strength between PEEK and veneering materials. The objective of this in vitro study was to evaluate the effect of a combination of chemical and physical pretreatments on the surface of PEEK for the adhesion of resin composite.

Materials and methods. Five pretreatments were evaluated: grit-blasting (Al2O3), grit-blasting (Al2O3)+primer adhesive, 98% sulfuric acid, 98% sulfuric acid+primer adhesive, and an untreated control. The PEEK surface was evaluated with a scanning electron microscope, and the tensile bond strength (TBS) of the PEEK with the veneering resin composite interface was measured with a universal test machine at a crosshead speed of 5 mm/min. The failure was categorized as adhesive, cohesive or mixed.

Results. Pretreatment with grit-blasting+primer adhesive obtained the highest mean ± standard deviation TBS value (19.10±1.70 MPa) followed by 98% sulfuric acid+primer adhesive (17.90±1.20 MPa), while the pretreatments with grit-blasting (13.97±2.33 MPa) and 98% sulfuric acid (12.18±0.70 MPa) showed the lowest values. All pretreatments showed statistically significant differences with respect to the untreated PEEK control and the combined pretreatments with respect to the pretreatment with grit-blasting and 98% sulfuric acid (p≤0.05). A higher number of adhesive failures were observed except in the grit-blasting+primer adhesive group, which had 80% mixed failures. No cohesive failures were seen.

Conclusion. The combination of chemical-physical pretreatments induced an increased in the TBS values between PEEK and resin composite because of the topographical roughness and the micro-mechanical anchoring in the PEEK surface.

---

¹Department of Aesthetic, Cosmetic, Restorative, and Implantological Dentistry, Faculty of Dentistry, Autonomous University of San Luis Potosí, San Luis Potosí, Mexico

²Department of Dental Science Advanced Education, Faculty of Dentistry, Autonomous University of San Luis Potosí, San Luis Potosí, Mexico

³Department of Endodontics Postgraduate Program, Faculty of Dentistry, Autonomous University of San Luis Potosí, San Luis Potosí, Mexico

⁴Department of Laboratory of Basic Science, Faculty of Dentistry, Autonomous University of San Luis Potosí, San Luis Potosí, Mexico

Address correspondence to Marine Ortiz Magdaleno, Faculty of Dentistry, Autonomous University of San Luis Potosí, Av. Dr. Manuel Nava #2, Zona Universitaria, 78290, S.L.P. México.

E-mail address: marine.ortiz@uaslp.mx