Abstract
Objective: To evaluate the influence of glass fiber reinforcements used in nautical and sports products on the flexural strength of acrylic resin. Materials and methods: Thirty thermoactivated acrylic resin bars (25 x 10.5 x 3.3 mm) were used. The samples were shared in 3 groups: bars with no glass fiber (control group, n = 10), bars reinforced with glass fiber and 0.18 mm thickness (group F1, n = 10) and bars reinforced with glass fiber and 0.80 mm thickness (group F2, n = 10). After 48 hours, samples were submitted to compression test in order to evaluate flexural strength. Obtained data were statistically analyzed with significance level of 5 %. Results: It was observed that the use of glass fiber effectively increased the flexural strength compared to the control group; the thickness of the glass fiber, however, did not present statistical differences. Conclusion: The use of fiber glass is a simple and cost-effective alternative to improve acrylic resin performance.KeywordsFlexural strength; Water sports; Dentures.
Highlights
The use of full prostheses often elicits wearing due to the masticatory process and the form of hygiene
Metal [2], carbon fiber and glass fiber have already been used for this purpose; glass fibers present enhanced biocompatibility, rigidness, are more aesthetic, and absorb less water [1]. It presents a considerable increase in the support of the flexural [3], transverse and diametrical [4,5] forces that can occur when the prosthesis is in function, thereby increasingly motivating its use [6]
To evaluate the flexural strength in acrylic resin, 30 bars were produced from a metallic die in the dimensions of 25 x 10.5 x 3.3 mm (Figure 1), which were divided into 3 groups of 10 samples: a control group of acrylic resin (Classical – Thermo-polymerizing acrylic), the F1 group were 10 samples with bidirectional glass fiber with a thickness of 0.18 mm (Fibertex) associated with the acrylic resin and group F2 with 10 samples of glass fiber with a thickness of 0.80 mm (Fibertex) associated with the acrylic resin (Figure 2)
Summary
The use of full prostheses often elicits wearing due to the masticatory process and the form of hygiene. Accidents falls during handling may happen, culminating in fractures Aiming at solving these questions, reinforcements in the bases of full prostheses were proposed to increase the strength of the acrylic resin [1]. Metal [2], carbon fiber and glass fiber have already been used for this purpose; glass fibers present enhanced biocompatibility, rigidness, are more aesthetic, and absorb less water [1] It presents a considerable increase in the support of the flexural [3], transverse and diametrical [4,5] forces that can occur when the prosthesis is in function, thereby increasingly motivating its use [6]. The null hypothesis is that there is no increase in flexural strength of reinforced bars with these types of fibers
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
