Comparison of the Mechanical Properties of Temporary Abutments Made of Polyetheretherketone and Photopolymeric Resin

Maria -Alejandra Barragán-Paredes,Martha Lucia Rodríguez-Paz,Carlos Alberto Viveros-Rebolledo,Isabella Mosquera-Victoria,Carlos Humberto Valencia - Llano,Mario Fernando Muñoz-Velez

doi:10.2174/1874210602115010512

Abstract

Background: Provisional abutments are widely used in the rehabilitation of dental implants as it allows the use of a provisional crown in order to restore patient aesthetics while the final restoration is being carried out; most of the temporary abutments available on the market are made of titanium alloygrade V (type Ti-6Al-4Va) and polyetheretherketone (PEEK), a material that exhibits very low adhesion to polymethylmethacrylate (PMMA). Objective: This research is aimed to compare the mechanical properties of commercially available PEEK abutments and abutments made using an additive technique with photopolymeric resin. Methods: Eighteen commercial temporary abutments manufactured in PEEK and eighteen experimental abutments manufactured by 3D printing using photopolymeric resin were used. The two groups of abutments were subjected to compression, bending and adhesion tests using six abutments of each type by test. Statistical analysis was performed with STATA 14 software. The data were analyzed by means of the Wilcoxon Mann-Whitney test, as these were two independent samples of reduced size. Values lower than (p <0.05) were considered statistically significant in all tests and rejected the null hypothesis of equality between the group medians. Conclusion: The results indicate that it is possible to make abutments with good mechanical properties in photopolymeric resin (CLEAR FLGP04) using additive techniques to be used as temporary abutments.

Highlights

IntroductionImplant-supported restorations, in addition of being functional, demand high aesthetics that compromise the surrounding soft and hard tissues [5]
Rehabilitation with implant-supported crowns is considered the gold standard for patients with tooth loss due to its high long-term survival rate and the lack of preparation requirements of adjacent teeth as it occurs in conventional techniques [1]; the most frequent cases that appear in the daily work of the dentist are the loss of single teeth for which the treatment with implants shows survival of 97.5% at 5 years [2,3,4].Implant-supported restorations, in addition of being functional, demand high aesthetics that compromise the surrounding soft and hard tissues [5]
The results indicate that it is possible to make abutments with good mechanical properties in photopolymeric resin (CLEAR FLGP04) using additive techniques to be used as temporary abutments

Summary

Introduction

Implant-supported restorations, in addition of being functional, demand high aesthetics that compromise the surrounding soft and hard tissues [5]. This is achieved by several factors, including temporary crowns, which allow better healing and give a definitive shape to the tissue for the emergence profile of the crown [6]. This is how the successful preparation of a provisional depends largely on the different materials on the market and their properties, which will determine its survival rate in the mouth [7]. Provisional abutments are widely used in the rehabilitation of dental implants as it allows the use of a provisional crown in order to restore patient aesthetics while the final restoration is being carried out; most of the temporary abutments available on the market are made of titanium alloygrade V (type Ti-6Al-4Va) and polyetheretherketone (PEEK), a material that exhibits very low adhesion to polymethylmethacrylate (PMMA)

Methods

Results

Discussion

Conclusion