ENHANCEMENT OF DENTURE-BASED MATERIAL PMMA BY INCORPORATION OF SILANIZED HALLOYSITE NANOTUBES

2021 ◽  
Vol 74 (9) ◽  
pp. 2293-2296
Author(s):  
Rafah Habib Abdul Amir
Keyword(s):  
Impact Strength ◽  
Base Material ◽  
Hardness Test ◽  
Acrylic Resin ◽  
Halloysite Nanotubes ◽  
Control Group ◽  
Transverse Strength ◽  
Comparison Results ◽  
Significant Difference ◽  
The Impact

The aim: This study evaluates the effect of adding silanized halloysite nanotubes to the polymethylmethacrylate (PMMA) resin on its hardness, impact strength, transverse strength. Materials and methods: Three groups of acrylic resin were prepared, one group without HNTs, was used as a control group (A). The other two groups contained 0.3% (B), 0.6% wt of silanized halloysite nanotubes (C). For each one, hardness, impact strength and transverse strength were measured. One-way ANOVA and Tukey’s test were used for comparison. Results: Regarding to the impact test, there was no significant difference between 0.3% concentration and the pure (control) group while 0.6% concentration had significant decrease compared to the pure group and so between the 0.3% group 0.6% group. For the hardness test, the 0.3% group had no significant difference with the pure group and a significant difference between group 0.6% group and the pure group while there was a no significant decrease between the 0.3% and 0.6% group with the higher hardness mean in the 0.3% compared to 0.6% group. For the transverse strength, both 0.3% wt concentration and 0.6% concentration showed significant difference compared to the pure group and also between each other with the lowest impact strength in 0.6% group followed by 0.3% group with the highest transverse strength in the pure group. Conclusions: The silanation of halloysite nanotubes reduces the mechanical properties of the heat-cured acrylic denture base material. The more concentration of silanazed halloysite nanotubes is added, the more weakening occurs in the acrylic material relating to the hardness, transverse strength and impact strength.

scholarly journals The effect of polyamide microparticles addition on some mechanical prop-erties of light-cured acrylic resin

2019 ◽  
Vol 10 (2) ◽  
pp. 1464-1469
Author(s):  
Adnan R. Al Assal ◽  
Abdalbaset A Fatalla ◽  
Mohammed Moudhaffar ◽  
Ghasak H Jani
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Base Material ◽  
Acrylic Resin ◽  
Strength Test ◽  
Control Group ◽  
Denture Base ◽  
Mean Values ◽  
Transverse Strength ◽  
Transverse Tensile

The general upgrading of polymer denture base material and research continuously looking for ideal restorative dental material with better properties, adequate esthetic properties, less expensive and easier to handle material to develop photo polymerization dental materials. This study was conducted to evaluate the effect of addition polyamide on mechanical microparticle properties light cure denture base material. One hindered sixty specimens from light-cured acrylic resin (Aurora). The divided mainly into four groups according to test used (Transverse strength test, impact strength test, hardness test and tensile strength test) with 40 specimens for each group. The results show an increase in Transverse strength, impact strength, hardness and tensile strength in all experimental group when compared to control group the highest mean values for all tests included in the study appeared in group B 1% polyamide. The addition of polyamide microparticle improves transverse, tensile, impact strength and hardness properties of denture base material.

scholarly journals Effect of Silver Nanoparticles on Some Physical& Biological Properties of Fluid Denture Base Material

2020 ◽  
Vol 04 (1) ◽  
pp. 27-40
Author(s):  
Jaymin Taher ◽  
Salem Salem
Keyword(s):  
Silver Nanoparticles ◽  
Impact Strength ◽  
Color Change ◽  
Base Material ◽  
Color Stability ◽  
Biological Properties ◽  
Strength Test ◽  
Control Group ◽  
Transverse Strength ◽  
Significant Difference

Poly methyl methacrylate (PMMA) is one of the most widely used materials in modern prosthodontics. It is widely known due to its simplicity in use and acceptable aesthetic. A new concept of polymerization fluid resin technique was instead of heat and gypsum material. Forty specimens were prepared from two brands of fluid acrylic resin. The samples were divided into two groups, the first one was the control while the other group was incorporated with silver nanoparticles(modified). The tests performed were impact strength, transverse strength, color stability and candida retention ability on the samples. 10 samples for each test were used. The results showed that modified group had significantly higher impact strength than the control group. There was non-significant difference between group of modified fluid acrylic and control group. Regarding color stability, there were highly significant color change after 10 days of immersion in the tea solution for the modified group the results of the biological test showed that the candida retention of the control group was significantly higher than modified group. Within the limitation of this study it can be concluded that addition of silver nanoparticles has resulted in significant difference between control and modified group for impact strength test. While non-significant difference was seen for transverse strength test. In regard to color stability, showed enhancement in color stability for both before and after placement in tea solution. Addition of silver nanoparticles also caused reduction in candida albicans retention in the added samples.

scholarly journals PENGARUH PENAMBAHAN ZIRKONIUM OKSIDA DAN SERAT POLIPROPILEN TERHADAP KEKUATAN IMPAK DAN TRANSVERSAL BAHAN BASIS GIGI TIRUAN RESIN AKRILIK POLIMERISASI PANAS

2018 ◽  
Vol 12 (2) ◽  
pp. 177-182
Author(s):  
Eddy Dahar ◽  
Raudhatul Husna
Keyword(s):  
Polypropylene Fiber ◽  
Acrylic Resin ◽  
Mean Value ◽  
Zro2 Nanoparticles ◽  
Control Group ◽  
Denture Base ◽  
Transverse Strength ◽  
Significant Difference ◽  
The Mean ◽  
The Impact

Heat polymerized acrylic resin is the most common material used for making denture base because of it’s advantages. However, this material still hasn’t fulfill all the ideal requirements as a denture base. Some disadvantages that need to be fixed are low impact and transverse strength causing an easy base of fracture. Several attempts were made to improve the mechanical properties of heat polymerized acrylic resin materials by adding reinforcing materials. Zirconium oxide is one of chemical group that can be used as a reinforcing material and polypropylene fiber which is including in fiber reinforcing groups. This study aims to determine whether there is a difference in the effect of the addition of 5% ZrO2 nanoparticles and 2% chopped polypropylene fibers 6 mm in length on the impact and transverse strength of heat polymerized acrylic resin denture base material. The design of this study is a laboratory experimental and the number of samples in this study are 60 samples. The result of this study shows the mean value of the impact and transverse strength of heat polymerized acrylic resin with ZrO2 nanoparticles reinforced is greater than the control group and heat polymerized acrylic resin group with polypropylene fiber reinforced with significant difference, and the mean value of impact and transverse strength of heat polymerized acrylic resin with polypropylene fibers reinforced is greater than the control group with significant difference.

IMPACT STRENGTH TEST ON ADDITION OF AGAVE SISALANA FIBER AND E-GLASS FIBER IN ACRYLIC RESIN DENTAL PLATE REPAIR

2021 ◽  
Vol 17 (1) ◽  
pp. 49-55
Author(s):  
Ni Kadek Sugianitri ◽  
◽  
Suhendra Suhendra ◽  
Keyword(s):  
Impact Strength ◽  
Glass Fiber ◽  
Acrylic Resin ◽  
Control Group ◽  
Denture Base ◽  
Denture Plate ◽  
Significant Difference ◽  
The Impact ◽  
Agave Sisalana ◽  
Fiber Addition

Introduction: Acrylic resin is the most common material for the denture base because the acrylic resin has good esthetics, ease of processing, reparability, and inexpensive. A disadvantage of acrylic resin is that it is easy to be cracked. One of the ways to resolve this problem is by adding agave sisalana fiber and E-glass fiber. The purpose of this study was to find out the effect of the addition of agave sisalana fiber and E-glass fiber on the impact strength of an acrylic resin denture plate reparation. Material and Method: The experiment involved twenty-seven plates of heat-cured acrylic with the dimensions of 55x 10 x 10 mm with the 26 x 5 x 4 mm for the cavity to measure, each measurement divided into three groups, with nine samples for each group. The first group was a control group (without fiber), the second group was a group with agave sisalana fiber addition, the third group was a group with e-glass fiber addition. All plates were soaked in distillation water for one day at 37o C. Plates were tested for impact strength using the Charpy method. All data obtained were analyzed with one-way ANOVA followed by LSD (Least Significant Difference) with p<0,05. Result and Discussion: The result showed that the influences of impact strength between without fiber with agave sisalana fiber and E-glass fiber addition on acrylic denture reparation. Acrylic denture reparation in both fibers with concentration 3,3%, agave sisalana fiber has the highest impact strength rather than e-glass fiber. Conclusion: The conclusion of this study is that there is an increase in impact strength with agave sisalana fiber and E-glass fiber addition on acrylic denture reparation and agave sisalana fiber has the highest impact strength.

Effect of phosphate ester addition on transverse strength and hardness of heat cured acrylic denture base material

2018 ◽  
Vol 30 (2) ◽  
pp. 5-9
Author(s):  
Zahraa S. Abed karkosh ◽  
Basima M.A. Hussien
Keyword(s):  
Polymethyl Methacrylate ◽  
Testing Machine ◽  
Base Material ◽  
Hardness Test ◽  
Acrylic Resin ◽  
Control Group ◽  
Phosphate Ester ◽  
Denture Base ◽  
Hardness Tester ◽  
Transverse Strength

Background: acrylic resin denture base consider a common denture base material for its acceptable cost, aesthetic and easy processing but still has disadvantages including easy of fracture and low impact strength. Material and method: The experimental group was prepared by addition of 15% phosphoric acid 2-hydroxyethyl methacrylate ester (PA2HEME) with polymethyl methacrylate monomer; the experimental groups was compared with the control one. The specimens were prepared according to ADA specification No. 12 with dimension 65 mm x 10 mm x2.5 mm (length x width x thickness respectively). The prepared specimens were tested by three-point flexural strength utilizing Instron Universal Testing Machine (WDW, Layree Technology Co.), Shore D hardness tester used to measure hardness test. Statistical analysis used student T- test, mean and standard deviation. Results: The result of PA2HEME group showed high significant reduction comparing to the control group for both transverse strength and hardness test. Conclusion: Mixing 15% of PA2HEME with 85% methyl methacrylate (MMA) can reduce the mechanical properties of new modified polymethyl methacrylate (PMMA) acrylic resin.

scholarly journals TiO2-Nanofillers Effects on Some Properties of Highly- Impact Resin Using Different Processing Techniques

2018 ◽  
Vol 12 (1) ◽  
pp. 202-212 ◽  
Author(s):  
Hawraa Khalid Aziz
Keyword(s):  
Thermal Conductivity ◽  
Impact Strength ◽  
Color Stability ◽  
Acrylic Resin ◽  
Water Bath ◽  
Control Group ◽  
Significance Level ◽  
Significant Difference ◽  
And Control ◽  
The Impact

Background: The criteria of conventional curing of polymethyl methacrylate do not match the standard properties of the denture base materials. Objectives: This research was conducted to investigate the addition of TiO2 nano practical on impact strength, thermal conductivity and color stability of acrylic resin cured by microwave in comparison to the conventional cured of heat-polymerized acrylic resin. Materials and Methods: 120 specimens made of high impact acrylic resin were divided into two main groups according to the type of curing (water bath, microwave), then each group was subdivided into two groups according to the addition of 3% TiO2 nano-fillers and control group (without the addition of TiO2 0%). Each group was subdivided according to the type of test into 3 groups with 10 specimens for each group. Data were statistically analyzed using Student t-test to detect the significant differences between tested and control groups at significance level (P<0.05). Results: According to curing type methods, the results showed that there was a significant decrease in impact strength of microwaved cured resin, but there was no significant difference in the thermal conductivity and color stability of resin. In addition, by using nanofiller, there was a significant increase in the impact strength and color stability with the addition of 3% TiO2 nanofillers, but no significant difference was found in the thermal conductivity of the acrylic resin. Conclusion: The microwave curing of acrylic resin had no change in the color stability and thermal conductivity in comparison to the water bath, but the impact strength was decreased. The addition of 3% TiO2 improved the impact and the color stability, but the thermal conductivity did not change.

scholarly journals ADDITION OF RICE HUSK NANOCELLULOSE TO THE IMPACT STRENGTH OF RESIN BASE HEAT CURED

2021 ◽  
Vol 4 (3) ◽  
pp. 119
Author(s):  
Muhammad Aditya Ramadhan Hasran ◽  
Dian Noviyanti Agus Imam ◽  
Bambang Sunendar
Keyword(s):  
Impact Strength ◽  
Mechanical Strength ◽  
Rice Husk ◽  
Acrylic Resin ◽  
Control Group ◽  
P Value ◽  
Test Results ◽  
Nano Cellulose ◽  
Reinforcing Material ◽  
The Impact

Background: One of the materials for denture bases is heat-cured acrylic resin (PMMA). This material still lacks impact strength as a mechanical strength property. The addition of reinforcing material is known to increase the mechanical strength of PMMA. One of the reinforcing materials added to PMMA is nano cellulose from rice husks, one of the wastes from agricultural products. Purpose: This study aims to determine rice husk nano cellulose's addition to the PMMA denture base's impact strength. Method:  The research sample consisted of six groups, each group consisting of 8 samples selected by simple random. The PI, P2, P3, P4, P5, and K groups were PMMA with 1%, 2%, 3%, 4%, 5% nano cellulose, and without nano cellulose. Result: Mean impact strength test results were 41.50 x 10-3 ± 3.891 J / mm2 for P1, 44.13 x 10-3 ± 3,980 J / mm2 for P2, 45.63 x 10-3 ± 4,438 J / mm2 for P3, 46.87 x 10-3 ± 4,824 J / mm2 for P4, 49.12 x 10-3 ± 4.016 J / mm2 for P5 and 36.25 x 10-3 ± 1.982 J / mm2 for K. One way Anova test results with p-value of 0.000 indicates differences in the six groups (p<0.05). Conclusion: This study concludes that the impact strength value of PMMA with the addition of rice husk nano cellulose has increased compared to the control group without the addition of rice husk nano cellulose.

scholarly journals Influence of Concentrations of Methacrylate and Acrylate Monomers on the Properties of Fiber Reinforced Polymethyl Methacrylate Denture Base Materials

2018 ◽  
Vol 26 (2) ◽  
pp. 329-350 ◽  
Author(s):  
Faik Tugut ◽  
Mehmet Turgut ◽  
Dursun Saraydin
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Testing Machine ◽  
Weight Ratio ◽  
Acrylic Resin ◽  
Bending Test ◽  
Control Group ◽  
Test Machine ◽  
Fiber Reinforced ◽  
Significant Difference

Abstract The study aimed to evaluate the effects of adding different concentrations of 2 hydroxyethyl methacrylate (HEMA), 2-hydroxyethyl acrylate (HEA), ethyl methacrylate (EA) and isobutyl methacrylate (IBMA) monomers on the structural, thermal and mechanical properties of a fiber reinforced heat-polymerized acrylic resin. For each test, 126 acrylic resin specimens were fabricated and divided into 6 groups with 7 specimens each. One group was the control group, the other one is a fiber reinforced group and others were the test groups, which were formed according to the different concentrations of monomers. 6 mm length, and the weight ratio of 3% short glass fibers are added to acrylic powder polymerized by heating. The 2%, 5%, 10%, at 20 % ratios of different comonomers added to a monomer of MMA are composed of copolymer structures. Flexural strength was assessed with a three-point bending test using a universal testing machine. Impact strength testing was conducted using an impact test machine by the Charpy method. The analysis of the connection between acrylic resin and fiber by SEM and structural changes in the acrylic resin was investigated by FTIR spectroscopy. Data analyses using analysis of Kruskal-Wallis and Mann-Whitney U tests (α=0.05) significant difference tests showed that adding 2%, 5% HEMA and IBMA monomers significantly increased the flexural and impact strength compared to the control, only fiber and others group (P< 0.05). It is observed that the process of adding low concentration of HEMA and IBMA monomers improved certain mechanical properties of fiber reinforced with polymethylmethacrylate.

PENGARUH MINUMAN TEH HITAM TERHADAP KEKUATAN TRANSVERSAL RESIN AKRILIK POLIMERISASI PANAS

2015 ◽  
Vol 3 (2) ◽  
pp. 68-73
Author(s):  
Riezka Hanafiah Putri ◽  
Zulkarnain Agus ◽  
Eni Rahmi
Keyword(s):  
Immersion Time ◽  
Testing Machine ◽  
Base Material ◽  
Acrylic Resin ◽  
Black Tea ◽  
Bending Test ◽  
Control Group ◽  
Denture Base ◽  
Transverse Strength ◽  
Acrylic Resins

Heat-polymerized  acrylic  resins  is  the  most  used  denture  base  material  in  prosthodontics.  One  of  mechanical properties of acrylic resins is transverse strength. It represents the masticatory pressure that is applied to denture base. Black tea is the second largest consumed beverage in the world. The aim of this study was to investigate the effect of black tea beverage on transverse strength of heat-polymerized acrylic resins. A total of 24 heat-polymerized acrylic resin plates (65×10×2,5 mm) were immersed in black tea beverage for 1, 4, and 20 days as treatment group and in aquadest for 1, 4, and 20 days as control group. The transverse strength of  acrylic samples were measured by three–point bending test by universal testing machine. Data were statistically analyzed using Independent t test. The transverse strength values of acrylic resin immersed in black tea beverage had no significant differences to the transverse strength values of acrylic resin immersed in aquadest with similar immersion time (p>0,05). There was no effect of black tea beverage on transverse strength of heat-polymerized acrylic resins. Immersion time decrease the transverse strength of heat-polymerized acrylic resins due to water sorption. Keywords: Heat-polymerized acrylic resins, black tea, transverse strength

The Difference of Impact Strength in Acrylic Resin Self-Cured with the Addition of Zirconium Dioxide (ZrO2) Nanoparticles

DENTA ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 51
Author(s):  
Widaningsih Widaningsih ◽  
Annete Juwita ◽  
Puguh Bayu Prabowo
Keyword(s):  
Impact Strength ◽  
Zirconium Dioxide ◽  
Acrylic Resin ◽  
Zro2 Nanoparticles ◽  
Control Group ◽  
Control Group Design ◽  
Post Test ◽  
The Difference ◽  
The One ◽  
The Impact

<p><strong><em>Background:</em></strong><em> Self-cured acrylic resin is a material used for repairing broken and fractured dentures. Zirconium dioxide (ZrO2) is a reinforcing material that is being developed as an additive to the acrylic resin. <strong>Objective:</strong> to determine the effect of zirconium dioxide (ZrO<sub>2</sub>) addition on self-cured acrylic resin on impact strength. <strong>Material and Methods:</strong> This study was a true experimental laboratory study with the design of a post-test only control group design, using 24 pieces of self-cured acrylic resin measuring 65 x 10 x 2.5 mm divided into 4 groups with and without zirconium addition dioxide (ZrO<sub>2</sub>) nanoparticles. Zirconium dioxide (ZrO<sub>2</sub>) nanoparticles were silanized first by mixing the silane coupling agent. Furthermore, the impact strength was tested on the plate. The data obtained were analyzed using the One Way ANOVA test. <strong>Results:</strong> there were significant differences in the impact strength between the groups with a significance value of 0,000 (p &lt;0.05). <strong>Conclusion:</strong> there was a difference in the increase of impact strength in acrylic resin self-cured with the addition of ZrO<sub>2</sub> nanoparticles concentrations of 3%, 5%, and 7%.</em></p><p><em><br /></em></p><p><strong><em>Key words:</em></strong><em> Self cured acrylic resin, zirconium dioxide, impact strength</em><em></em></p><p><strong><em> </em></strong></p><strong><em>Correspondence </em></strong><em>: Widaningsih, Department of Prosthodonti, Faculty of Dentistry, Hang Tuah University, Arif Rahman Hakim 150, Sukolilo, Surabaya, Phone 0818312757, Email: </em><a href="mailto:[email protected]"><em>[email protected]</em></a>

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