scholarly journals The Effect of Glass Fiber Reinforcing Materials and Thermocycling on the Transverse Strength of Denture Base Resin

2013 ◽  
Vol 29 (4) ◽  
pp. 327-336
Author(s):  
Sung-Eun Jin ◽  
In-Ho Cho
2020 ◽  
Vol 6 (1) ◽  
pp. 01-05
Author(s):  
Abhinav Agarwal ◽  
Manesh Lahori ◽  
Dharmesh Kumar

Purpose: The purpose of this study was to compare the transverse strength of denture base resin reinforced with two distinct fibers and their combination with the denture base resin without any reinforcement. MaterialsandMethod: Atotal40testsamplesofclearheatcureresinwerefabricatedwiththehelpofa customized metallic die and divided in to four groups- Group1: samples fabricated with clear acrylic resin without any reinforcement(Control group),Group2: samples reinforced with carbon fiber epoxy resin composite block, Group3: samples reinforced with glass fiber epoxy resin composite block, Group 4: samples reinforced with combination of carbon and glass fiber epoxy resin composite block. After finishing and polishing all the samples were having final dimension of 3 cm × 1 cm × 0.3cm with a ±0.02 error measured with digital vernier caliper. Samples were immersed in water for 7 days in an incubator. A 3-point bend test was done in a universal testing machine, and load to fracture was recorded (MPa). Statistical analysis was performed using one way analysis of variance (ANOVA) followed by tukey HSD post-hoc test to compare mean transverse Strength in four groups. Results: Group 2 and group 4 showed highest strength with significant difference with all other groups and non-significant with each other. Group1(control group) showed lowest transverse strength among all the groups. Conclusion: carbon fiber and glass fiber alone provided either good transverse strength or good esthetics respectively while unique combination of carbon and glass fiber epoxy resin composite significantly increased the transverse strength of acrylic resin along with good esthetics.


2002 ◽  
Vol 21 (2) ◽  
pp. 105-117 ◽  
Author(s):  
Yasuhiro TANIMOTO ◽  
Tsuyoshi NISHIWAKI ◽  
Norihiro NISHIYAMA ◽  
Kimiya NEMOTO ◽  
Zen-ichiro MAEKAWA

2012 ◽  
Vol 126 (S2) ◽  
pp. E260-E266 ◽  
Author(s):  
Hak-Hu Kim ◽  
Myung-Joo Kim ◽  
Ho-Bum Kwon ◽  
Young Jun Lim ◽  
Seong-Kyun Kim ◽  
...  

Author(s):  
Sabit Melih Ateş ◽  
İpek Çağlar ◽  
Fatih Mehmet Korkmaz ◽  
Firas Süleyman ◽  
Zeynep Yeşil Duymuş

2020 ◽  
Vol 14 (01) ◽  
pp. 092-099 ◽  
Author(s):  
Ahmad M. Al-Thobity

Abstract Objective Different polymerization and reinforcement techniques have been tested to enhance the mechanical characteristics of denture base acrylic resins. The goal of the present study was to evaluate the influence of autoclave polymerization techniques with glass fiber reinforcement on the flexural strength and elastic modulus of polymethyl methacrylate denture base resins. Materials and Methods Ninety specimens were fabricated from heat-polymerized acrylic resin and randomly distributed depending on the polymerization technique into three groups (n = 30): water bath polymerization, short-cycle autoclave polymerization, and long-cycle autoclave polymerization. Each group was further divided into three subgroups (n = 10) based on the concentration of glass fiber 0, 2.5, and 5wt%. The flexural strength and elastic modulus were investigated using a universal testing machine. One-way ANOVA and Tukey’s post hoc test were performed to analyze the results (α = 0.05). Results The flexural strength and elastic modulus values were significantly higher in 5wt% glass fiber reinforced long-cycle autoclave group in comparison with the other test groups (p < 0.05). Conclusions The long-cycle autoclave polymerization technique with the glass fiber reinforcement significantly increased the flexural strength and elastic modulus of the denture base resin material.


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