Flexural strength of milled polymer bars, with and without glass fiber reinforcement

Abstract

The aim of this study is to test and compare the flexural strength of milled polymer bars, with and without glass fiber reinforcement. The number of samples in the study was defined through a pilot study on a universal testing machine (EMIC) (n = 5). The brands analyzed in this study were Arch Free Metal, Zantex, Bioplas and PEEK. All samples were submitted to thermal aging before the three-point flexural test. Fracture patterns were analyzed using a Scanning Electron Microscope. Results show that the Arch Free Metal bar presented the largest flexural strength, followed by Zantex and PEEK bars, that lacked statistical difference, and Bioplas bars. Regarding fracture patterns, Arch Free Metal and Zantex bars were partially fractured and showed partial glass fiber rupture; PEEK bars were not fractured and showed plastic behavior; and Bioplas bars were fractured. It is possible to conclude that the reinforced polymer bar Arch Free Metal has a better performance in terms of flexural strength than the other tested materials.

Biomechanical comparison of different framework materials in mandibular overdenture prosthesis supported with implants of different sizes: a finite element analysis

“…PEEK is a semi-crystalline organic polymer with high chemical and mechanical properties [ 10 , 12 ]. As an alternative to patients with metal allergies, PEEK is used in prosthetic treatments due to its high heat resistance, biocompatibility, resistance to oral fluids and ease of use.…”

“…As an alternative to patients with metal allergies, PEEK is used in prosthetic treatments due to its high heat resistance, biocompatibility, resistance to oral fluids and ease of use. It has mechanical properties similar to dentin [ 6 , 12 ]. PEEK material can be combined with ceramic materials and fiber materials to improve its strength or aesthetic properties [ 13 , 14 ].…”

Biomechanical Comparison Of Diffirent Framework Materials In Mandibular Overdenture Prosthesis Supported With Implants Of Different Sizes: A Finite Element Analysis

“…PEEK is a semi-crystalline organic polymer with high chemical and mechanical properties [10,12]. It is used in prosthetic treatments due to its high heat resistance, biocompatibility, resistance to oral uids, and ease of use [6,12]. The risk of plaque involvement and allergy formation is higher than that of metal and other resins.…”

“…The risk of plaque involvement and allergy formation is higher than that of metal and other resins. It can be an alternative to metal frameworks in removable prostheses [12]. Zantex is a material containing a high-performance polymer matrix with three-dimensional dense glass ber added.…”

“…It demonstrates high fracture resistance when used as an framework material in partial and total removable dentures. Zantex is a newly produced material with limited studies on it [11][12][13].…”