Wire reinforcement of acrylic resin prostheses

Carroll, Christopher; Fraunhofer, J.A. von

doi:10.1016/0022-3913(84)90132-x

Cited by 72 publications

(52 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Different trials had been undertaken by many researchers to improve the mechanical properties of PMMA, (6) Such as, reinforcement of different types of fibers (11) , metal wires were also used as reinforcement for denture base polymers (13) and the incorporation of fillers, search for an alternative material to PMMA, use of chemical modification, presence of surface treatment or not and using alternative curing method or changing the programed cycle. Strong and more fracture-resistant denture base materials can be obtained by the use of impact modifiers; usually rubber like substances which were added to acrylic resin (14) or by the addition of cross linking agents.…”

Section: Introductionmentioning

confidence: 99%

Strength and Surface Roughness of Cross Linking Acrylic Resin Processed by Different Heat Curing Methods

Kareem

2015

Iraqi dent. j.

View full text Add to dashboard Cite

Background: Heat-cured acrylic resin is considered one of the most commonly used denture base material in denture construction, but this material is not ideal in every respect. So many researches have been carried out to find an alternative material like cross linking acrylic resin. Meanwhile, the curing procedures have been modified to improve the physical and mechanical properties of resin materials .The aim of this study was to evaluate the effect of three curing methods:(water bath, autoclave short cycle and autoclave long cycle) on transverse strength, tensile strength and surface roughness of cross linking acrylic denture base materials. Material and method: Cross linking acrylic resin was used in this study and processed in three curing methods (water bath, autoclave short cycle and autoclave long cycle). Ninety specimens were prepared. Each main group was subdivided into three subgroups according to the type of test used (transvers strength test, tensile strength test and surface roughness test). Each group contained 10 specimens for each test. Result:Three tests were used to analyze the results: analysis of variance (ANOVA), the least significant difference (LSD) and an independent T-test. There were no significant differences between the results of the processing techniques regarding transverse and tensile strength but there was a significant difference between the results of surface roughness tests. Conclusion: It was concluded that autoclave curing method can be used with different duration whether it is short or long instead of water bath curing method.

show abstract

Section: Introductionmentioning

confidence: 99%

Strength and Surface Roughness of Cross Linking Acrylic Resin Processed by Different Heat Curing Methods

Kareem

2015

Iraqi dent. j.

View full text Add to dashboard Cite

show abstract

“…Flexural fatigue occurs after separate flexing of a material, whereas impact fracture occurs when extra ordinary forces are applied suddenly (Nally et al, 2006). Many attempts have been made to enhance the strength of acrylic denture bases including the addition of metal wires and cast metal plates (Vallittu & Lassila, 1992;Vallittu, 1993;Carroll & Fraunhofer, 1984;Ruffino, 1985). The primary problem with using metal wire is poor adhesion between the wire and resin, which leads to insignificant enhancement of mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…The primary problem with using metal wire is poor adhesion between the wire and resin, which leads to insignificant enhancement of mechanical properties. Although metal plates increase the strength, they may be expensive and prone to corrosion (Carroll & Fraunhofer, 1984;Ruffino, 1985;Vallittu & Lassila, 1992;Vallittu, 1993). Modifications of the chemical structure, by adding crosslinking agents or copolymerization with rubber, result in significant increases in the impact strength.…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation of HA/AL2O3 nanoparticles on mechanical properties of restoration materials

Safarabadi¹,

Khansari²,

Rezaei³

2014

10.5267/j.esm

View full text Add to dashboard Cite

Nano composite materials based on polymers are widely used in restoration martials like dental. Poly methyl methacrylate (PMMA) is one of the most used polymers as dental material. PMMA has disadvantages such as low flexural strength properties and impact strength. In this paper, the influences of additive aluminum oxide and hydroxyapatite nanoparticles on the mechanical and strength properties of PMMA (including flexural strength, impact strength, surface hardness and shrinkage behavior) is studied experimentally. For this purpose, nine standard mechanical testing samples of pure PMMA, PMMA/5HA and PMMA/10HA with various amounts of Nano aluminum oxide (3,6,8 wt.%) were prepared. The results showed that the mechanical properties of hybrid Nano-composites were significantly improved in comparison with the pure samples in a way that optimal Nano-composite with convenience flexural properties and impact strength is obtained. Moreover, the use of nanoparticles results in shrinkage reduction of hybrid Nano-composites in comparison with pure PMMA.

show abstract

“…Autopolymerizing PMMA has been in routine use since 1930s and remains the most frequently used material for fabrication of interim restorations. 5,6 One of the most common failures of PMMA interim FPDs is fracture. In spite of our best efforts in designing and material modifications, they fail leading to discomfort and time loss.…”

Section: Discussionmentioning

confidence: 99%

An evaluation of fracture resistance of interim fixed partial denture fabricated using polymethylmethacrylate and reinforced by different fibres for its optimal placement: an in vitro study

Viswambaran

Kapri

D'Souza³

et al. 2011

Medical Journal Armed Forces India

View full text Add to dashboard Cite

INTRODUCTIONRehabilitation of partially edentulous patients using fixed partial denture (FPD) is a well-established treatment protocol since many decades. These FPDs require a laboratory phase of fabrication that varies from days to weeks. A dimensionally stable, strong, and accurate interim restoration is an important component of this treatment modality. These interim restorations provide pulpal protection, positional stability, occlusal function, strength, and aesthetics.Polymethylmethacrylate (PMMA) is the most common material used to fabricate interim FPDs. This material lacks sufficient strength and hence various methods are being used for reinforcing it in the past like glass fibres, carbon fibres, kevlar fibres, polyethylene fibres, and stainless steel wire.1-4 To date, little information is available in the literature on fracture resistance of reinforced PMMA temporary crown and bridge materials. It is also not clear as to how the site of placement of fibre reinforcement, influences the fracture resistance of temporary crown and bridge materials. Therefore, this study was undertaken to evaluate the fracture resistance of interim FPDs using different types of fibre reinforcements and also to determine the most appropriate site of reinforcement of interim FPDs fabricated from PMMA. MATERIALS AND METHODThis study was designed in two stages. In the first stage various methods of reinforcement for interim FPDs made up of PMMA were evaluated. During the second stage, favourable sites of placement to strengthen the interim FPDs were evaluated. There were five groups of ten samples each namely the group 1 (unreinforced, control group), group 2 (glass fibrereinforced), group 3 (polyethylene fibre-reinforced), group 4 (glass and polyethylene mixed fibre) and group 5 (stainless steel reinforced).Samples were tested for fracture resistance in an Instron universal testing machine. The maximum load causing the initial fracture and fracture resistance were calculated. The mean and standard deviation for each group were determined. The data was analysed for differences using one way analysis of variance (ANOVA) (The Tukey's standardised range test) to An evaluation of fracture resistance of interim fixed partial denture fabricated using polymethylmethacrylate and reinforced by different fibres for its optimal placement: an in vitro study Col

show abstract

Wire reinforcement of acrylic resin prostheses

Cited by 72 publications

References 1 publication

Strength and Surface Roughness of Cross Linking Acrylic Resin Processed by Different Heat Curing Methods

Strength and Surface Roughness of Cross Linking Acrylic Resin Processed by Different Heat Curing Methods

An experimental investigation of HA/AL2O3 nanoparticles on mechanical properties of restoration materials

An evaluation of fracture resistance of interim fixed partial denture fabricated using polymethylmethacrylate and reinforced by different fibres for its optimal placement: an in vitro study

Contact Info

Product

Resources

About