Influence of the Peek Abutments on Mechanical Behavior of the Internal Connections Single Implant

Author(s)

Melo de Matos, Jefferson David ; Scalzer Lopes, Guilherme da Rocha ; Queiroz, Daher Antonio ; Jesus Pereira, Andre Luiz ; Coelho Sinhoreti, Mario Alexandre ; Ramos, Nathalia de Carvalho ; Lino, Vinicius ; de Oliveira, Flavio Rosa ; Souto Borges, Alexandre Luiz ; Bottino, Marco Antonio

• Document type: Journal article
• Source: MATERIALS; v. 15, n. 22, p. 14-pg., 2022-11-01.

Abstract

The present study aimed to evaluate the biomechanical behavior of PEEK abutments with different heights on single titanium implants. To investigate the implant surface, different tests (scanning electron microscopy, energy-dispersive X-ray, and X-ray diffraction) were adopted. Herein, 20 implants received the 4.5 x 4.0 mm PEEK short abutment (SA) and 20 received the 4.5 x 5.5 mm PEEK long abutment (LA). The abutments were installed using dual-cure resin cement. To determine the fatigue test, two specimens from each group were submitted to the single load fracture test. For this, the samples were submitted to a compressive load of (0.5 mm/min; 30 degrees) in a universal testing machine. For the fatigue test, the samples received 2,000,000 cycles (2 Hz; 30 degrees). The number of cycles and the load test was analyzed by the reliability software SPSS statistics using Kaplan-Meier and Mantel-Cox tests (log-rank) (p < 0.05). The maximum load showed no statistically significant differences (p = 0.189) for the SA group (64.1 kgf) and the LA group (56.5 kgf). The study groups were statistically different regarding the number of cycles (p = 0.022) and fracture strength (p = 0.001). PEEK abutments can be indicated with caution for implant-supported rehabilitation and may be suitable as temporary rehabilitation. (AU)

• FAPESP's process: 21/11499-2 - Biomechanical behavior and fatigue survival of two: piece titanium and zirconia implants supporting zirconia single crowns
• Grantee: Jefferson David Melo de Matos
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 19/24903-6 - Comparative analysis between titanium implants and polycrystalline ceramics in survival on fatigue and biomechanical behavior
• Grantee: Jefferson David Melo de Matos
• Support Opportunities: Scholarships in Brazil - Doctorate