Color Changes of Polyamid and Polymetyhl Methacrylate Denture Base Materials

Sağsöz, Nurdan Polat; Yanıkoğlu, Nuran; Ulu, Hamza; Bayındır, Funda

doi:10.4236/ojst.2014.410066

Cited by 25 publications

(15 citation statements)

References 19 publications

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“…Various transparent pigments can be added to PMMA to achieve provide good aesthetic properties, mimicking the patient’s natural tissues ( Figure 2 h). Additionally, the denture base materials should have high color stability and should not change (discolor) in the oral environment over time [ 122 ]. However, PMMA-based materials have demonstrated poor color stability and tend to change while functioning due to several factors.…”

Section: Properties Of Pmmamentioning

confidence: 99%

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

2020

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A wide range of polymers are commonly used for various applications in prosthodontics. Polymethyl methacrylate (PMMA) is commonly used for prosthetic dental applications, including the fabrication of artificial teeth, denture bases, dentures, obturators, orthodontic retainers, temporary or provisional crowns, and for the repair of dental prostheses. Additional dental applications of PMMA include occlusal splints, printed or milled casts, dies for treatment planning, and the embedding of tooth specimens for research purposes. The unique properties of PMMA, such as its low density, aesthetics, cost-effectiveness, ease of manipulation, and tailorable physical and mechanical properties, make it a suitable and popular biomaterial for these dental applications. To further improve the properties (thermal properties, water sorption, solubility, impact strength, flexural strength) of PMMA, several chemical modifications and mechanical reinforcement techniques using various types of fibers, nanoparticles, and nanotubes have been reported recently. The present article comprehensively reviews various aspects and properties of PMMA biomaterials, mainly for prosthodontic applications. In addition, recent updates and modifications to enhance the physical and mechanical properties of PMMA are also discussed.

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Section: Properties Of Pmmamentioning

confidence: 99%

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

2020

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“…The results showed higher colour changes occurred in materials soaked in coffee than ingredients soaked in green tea. Sagsoz et al 22 undertook a study of the colour change of the polyamide and PMMA prostheses soaked in coffee, tea, distilled water and cleaning solutions. The results showed the greatest changes occurred in Polyamide materials that soaked in coffee.…”

Section: Discussionmentioning

confidence: 99%

“…The coffee solution showed an average lower NBS value than the tea and coca cola solution. Jang et al 21 , Sagsoz et al 22 , Koksal et al 23 , Abdel and Sharkawy. 12 , Topcu et al 24 , Mousavi et al 25 using instant coffee and tea bags in their study, whereas researchers used coffee powder original and original dried tea leaves are brewed with hot water.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Coffee And Tea On Immersion of Thermoplastic Acetal Resin and Polyamide 12

Sona

Sumarsongko

Kurnikasari

et al. 2018

ijmsci

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Tooth loss causes unstable occlusion which affects person's mastication, phonetic and esthetic. Removable partial denture is a suitable treatment to overcome these conditions. However, patients sometimes refuse to receive the treatment due to several problems such as economic problem, anxious with poor prosthetic's retention and aesthetic dissatisfaction resulting from the use of metal claps. There are two types of thermoplastic resin material which used as aesthetic crystal material alternative, namely polyoxymethylene (acetal resin) and polyamide 12 (thermosens). This study aimed to determine the highest colour change between acetal resins and thermosens, knowing the type of solution that causes the highest colour change in acetal resin and thermosens and to ascertain time required for the colour change of acetal resins and thermosens. A laboratory experimental study was performed by using 48 samples consist of 24 acetal resin plates and 24 thermosens plates, which each divided into four groups soaked in coffee and tea for 7 days and 14 days. The result of statistical test of Mann Whitney in the study group obtained information of p value on variable National Bureau of Standards smaller than 0.05 (p value <0.05) which considered as significant or statistically significant. The conclusion of this study showed acetal resin experienced a higher color changes. Tea solution is the highest solution causing discoloration. Acetal resins and thermosens change colour after use for 2.7 years. The conclusion of this study showed that acetal resin undergoes a higher color change compared with thermosens. Tea solution is the highest solution causing discoloration. Acetal resins and thermosens change color after immersion for 7 days.

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“…The degree of color change was determined by a colorimeter or spectrophotometer that has a standard; if the value of ΔE is more than 3.7 then the color is unstable. [7][8][9] Several studies have linked the use of reinforcing materials with the strength of HPA resin denture base and found a significant influence. The addition of reinforcing material in the form of metal oxide to HPA resin can affect the physical, mechanical and biological properties of the den-ture base.…”

Section: Introductionmentioning

confidence: 99%

The effect of aluminum oxide on heat polymerized acrylic resin denture base material to flexural strength and color stability

Praningrum¹,

Putranti²

2020

ijp

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The purpose of this study was to determine the effect of aluminum oxide addition on heat polymerized acrylic (HPA) resin denture base to flexural strength and color stability. Method: This study was carried out on HPA resin samples without and with the addition of aluminum oxide with a concentration of 0.5%, 1.5%, 2.5%. A bar-shaped sample sized 65 x 10 x 3 mm was used for flexural strength testing and circular-shaped sample with a diameter of 50 mm x 1 mm (no. 80) was used for color stability testing; 24 samples for flexural strength test and 24 samples for color stability test. All samples were immersed in distilled water for 48 hours at 37°C in an incubator. A universal testing machine was used to test flexural strength and a portable colorimeter was used for color stability testing. Conclusion: The addition of 0.5% aluminum oxide significantly increase the flexural strength and has good color stability.

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Color Changes of Polyamid and Polymetyhl Methacrylate Denture Base Materials

Cited by 25 publications

References 19 publications

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

The Effect of Coffee And Tea On Immersion of Thermoplastic Acetal Resin and Polyamide 12

The effect of aluminum oxide on heat polymerized acrylic resin denture base material to flexural strength and color stability

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