Influence of Fiber Reinforcement on the Properties of Denture Base Resins

Abstract

<span>Advances in the medical sciences along with rapid increase in the specialized and better treatment modalities, certainly prolonged the human life with a drastic increase in the number of elderly in the past few decades. Tooth loss is one of the manifestations of aging. Dentures and dental implants are the major prosthetic devices given to restore physiological and esthetic functions of oral tissues of edentulous or partially edentulous patients. Complete and partial dentures based on polymeric compositions are the most popular devices since the cost of dental implants and metal-base dentures are much higher. Among the polymers, poly</span><span> </span><span>(methyl</span><span> </span><span>methacrylate) (PMMA) is the most commonly used material for this purpose. Although, this material is not ideal in every respect, it is the combination of qualities rather than one single desirable property that accounts for its popularity and usage. One of the main drawbacks of this material is considered to be its poor mechanical performance. There have been several attempts in the recent past to address the problem of inferior mechanical properties of these materials. Generally, there are three ways which have been investigated to im</span><span>prove the mechanical properties of denture bases; search for or development of an alternative material to PMMA; chemical modification of PMMA; and the reinforcement of PMMA. Present article is a review of types of fibres rein</span><span>forced in denture prosthesis and their effects on mechanical properties of denture prosthesis.</span><span></span

The effects of adding various ratios of zirconium oxide nanoparticles to poly(methyl methacrylate) on physical and mechanical properties

“…Relatively low modulus of elasticity makes PMMA more prone to failure in the mouth (26). The modulus of elasticity should be at least 2,000 MPa for heat acrylic resin according to ISO 20795-1 (22).…”

Preparation and Investigation of some Properties of Acrylic Resin Reinforced with Siwak Fiber Used for Denture Base Applications

“…Furthermore C=O and C-O bands appear at range (1500-2000 cm -1 ) and (1000-1400) respectively [5]. So, the medium strength of C=O stretching assigned at 1722 cm 1 and the bands at (1447.03 and 1385) cm -1 are associated with (C-H) symmetric and asymmetric stretching modes respectively. The 1239.54 cm -1 band is assigned to torsion of the methylene group CH 2 and the peak at 1189.98cm -1 for the band corresponds to vibration of the ester group (C-O), while (C-C) stretching band are at (984.77 and 840.98) cm -1 [5 and 6].…”

“…The 1239.54 cm -1 band is assigned to torsion of the methylene group CH 2 and the peak at 1189.98cm -1 for the band corresponds to vibration of the ester group (C-O), while (C-C) stretching band are at (984.77 and 840.98) cm -1 [5 and 6]. In this spectrum medium strength of C=O bending assigned at 748.98 cm 1 . The infrared spectrum of PMMA composites reinforced with different ratios of siwak fiber (0, 3, 6 and 9%) for different lengths (2, 6 and 12mm) is shown in figures (3, 4 and 5).…”

“…Among the polymers, (PMMA) is the most commonly used material for this purpose. One of the main drawbacks of this material is considered to be its poor mechanical performance [1]. Fracture of acrylic resin removable dentures occurs frequently during service through heavy occlusal force or accidental damage [2].…”

Pengaruh Posisi Serat Kaca (Fiberglass) Yang Berbeda Terhadap Kekuatan Fleksural Fiber Reinforced Acrylic Resin

“…10 Penambahan jenis serat dalam resin akrilik dapat berupa carbon, metal, aramid dan serat kaca (fiberglass).…”