Shear bond strength of two veneering composite resins to a modified polyetheretherketone (PEEK) material: Influence of surface pretreatments and thermocycling
EL-Wassefy, N., Ghorab, S. (2019). Shear bond strength of two veneering composite resins to a modified polyetheretherketone (PEEK) material: Influence of surface pretreatments and thermocycling. EKB Journal Management System, 65(Issue 3 - July (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), 2821-2830. doi: 10.21608/edj.2019.72677
Noha A. EL-Wassefy; sayed Ghorab. "Shear bond strength of two veneering composite resins to a modified polyetheretherketone (PEEK) material: Influence of surface pretreatments and thermocycling". EKB Journal Management System, 65, Issue 3 - July (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), 2019, 2821-2830. doi: 10.21608/edj.2019.72677
EL-Wassefy, N., Ghorab, S. (2019). 'Shear bond strength of two veneering composite resins to a modified polyetheretherketone (PEEK) material: Influence of surface pretreatments and thermocycling', EKB Journal Management System, 65(Issue 3 - July (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), pp. 2821-2830. doi: 10.21608/edj.2019.72677
EL-Wassefy, N., Ghorab, S. Shear bond strength of two veneering composite resins to a modified polyetheretherketone (PEEK) material: Influence of surface pretreatments and thermocycling. EKB Journal Management System, 2019; 65(Issue 3 - July (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)): 2821-2830. doi: 10.21608/edj.2019.72677

Shear bond strength of two veneering composite resins to a modified polyetheretherketone (PEEK) material: Influence of surface pretreatments and thermocycling

Egyptian Dental Journal
Article 39, Volume 65, Issue 3 - July (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), July 2019, Page 2821-2830  XML PDF (811.61 K)
Document Type: Original Article
DOI: 10.21608/edj.2019.72677
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Authors
Noha A. EL-Wassefy1; sayed Ghorab2
1Associate Professor of Dental Materials, Faculty of Dentistry, Mansoura University, Egypt
2Lecturer of Dental Materials, Faculty of Dentistry, Mansoura University, Egypt
Abstract
Objective: To research the influence of different surface pretreatment and thermocycling on shear bond strength (SBS) between veneering resins and a modified polyetheretherketone (PEEK) material.
Materials and Methods: (PEEK) specimens were machined and allocated into Four pretreatment groups, Group A; no treatment, Group B; etching with 98% sulfuric acid for
1 min, Group C; air abrasion with 50 µm Al2O3, and Group D; air abrasion with 110 µmAl2O3. Surface roughness (Ra) was determined by a profilometer. Surface morphology of specimens was scanned by a Scanning Electron Microscope. Specimens were treated with Visio.link bond, divided into two subgroups; one veneered with SR Nexco and the other with Crea.lign composites. SBS was tested immediately and after thermocycling. Data were statistically analyzed using ANOVA and Tukey HSD, α = 0.05.
Results: Air abrasion with 110 µm alumina significantly increased the surface roughness (P<0.001). The highest shear bond strength values were observed for sulfuric acid etched group. Specimens veneered with CreaLign showed non-significant higher SBS values than those veneered with SR Nexco (P>0.05). After thermocycling, all tested groups revealed significant improvement in SBS (p<0.001).
Conclusions: A modified PEEK material strengthened with 20% submicron ceramic fillers, could be treated by etching with 98% sulfuric acid for 1 min, to enhance bond strength to veneering composites and was found to have significant improvement in bond strength after thermocycling.
Keywords
Surface roughness; PEEK; Shear bond strength; thermocycling
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