scholarly journals A Study to Evaluate Midline Fracture Resistance of Maxillary Acrylic Denture Base Reinforced with Metal Pattern in Various Palatal Contours

2020 ◽  
Vol 11 (4) ◽  
pp. 287-293
Author(s):  
Chethan Hegde ◽  
D Krishna Prasad ◽  
Easha Singh Dogra
Keyword(s):  
Fracture Resistance ◽  
Denture Base ◽  
Metal Pattern

scholarly journals TESTING OF THE FRACTURE RESISTANCE OF THE HEAT-CURING DENTURE BASE ACRYLIC RESIN

2018 ◽  
Vol 9 (2) ◽  
Author(s):  
Aleksandra Maletin ◽  
Jovana Bastajić ◽  
Ivan Ristić ◽  
Branislava Petronijević Šarčev ◽  
Isidora Nešković ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Fracture Resistance ◽  
Acrylic Resin ◽  
Denture Base ◽  
Universal Testing ◽  
Heat Curing ◽  
Significant Difference ◽  
Student’S T ◽  
Student’S T Test

For many years, poly-methyl methacrylate has been used as a material of choice for making the denture base, thanks to its good and desirable performances, such as: simplicity in work, possibility of reparation, aesthetics and affordable price. Considering to its insufficient hardness and fracture resistance, there is a tendency to improve the mechanical properties of the material, by changing its basic composition. The aim of the research was to determine the fracture resistance of the heat-curing denture base acrylic resin materials. Materials and methods: For the research ,20 samples of the 2 heat-curing acrylics had been prepared, standard ones and reinforced acrylic resin material. After the storage in the saline for 15 days, measurements of the fracture resistance were performed by using the universal testing device. The data were statistically processed using the Student’s t-test for independent samples. Results: By measuring the flexural strength and deflection at breakage, it has been proven that there was, statistically, a significant difference of the flexural strength between reinforced (179.91-248.72MPa) and standard heat-curing acrylics (183.25- 200.74MPa). The deflection at breakage showed approximately the same values for both materials (1,0-1,4mm; 1.0-1.5mm). Conclusion: By enhancing the polymer, the mechanical properties of the denture base acrylic resin materials will be improved, primarily, higher fracture resistance, that means that these technologies need to be improved.

scholarly journals In Vitro Analysis of the Fracture Resistance of CAD/CAM Denture Base Resins

Materials ◽  
2018 ◽  
Vol 11 (3) ◽  
pp. 401 ◽  
Author(s):  
Otto Steinmassl ◽  
Vincent Offermanns ◽  
Wolfgang Stöckl ◽  
Herbert Dumfahrt ◽  
Ingrid Grunert ◽  
...  
Keyword(s):  
Fracture Resistance ◽  
Denture Base ◽  
Cad Cam ◽  
Vitro Analysis ◽  
In Vitro Analysis

scholarly journals Prosthodontic Management of Single Complete Denture with Reinforced Metal Denture Base: A Case Report

2019 ◽  
Vol 07 (01) ◽  
pp. 042-045
Author(s):  
Chhavi Sharma ◽  
Manjit Kumar ◽  
Ajay Bansal ◽  
Sanjan Verma ◽  
Shak Mehta
Keyword(s):  
Case Report ◽  
Methyl Methacrylate ◽  
Physical Properties ◽  
Dimensional Stability ◽  
Fracture Resistance ◽  
Base Material ◽  
Complete Denture ◽  
Denture Base ◽  
Major Factors ◽  
Maxillary Arch

AbstractFor improvement in longevity of complete denture prosthesis in place of conventional poly methyl methacrylate denture base material, metal denture base is used to rehabilitate complete edentulous maxillary arch as it helps in preventing resorption of residual ridges and improves fracture resistance, better dimensional stability, more accuracy, less weight, and better retention of prosthesis. For better prognosis there are many factors, but major factors such as retention, stability, and support are more important. Metal denture base leads to improvement in physical properties of the prosthesis.

scholarly journals Effects of Denture Base Thicknesses and Reinforcement on Fracture Strength in Mandibular Implant Overdenture with Bar Attachment: Under Various Acrylic Resin Types

2019 ◽  
Vol 13 (01) ◽  
pp. 064-068
Author(s):  
Selen Tokgoz ◽  
Arda Ozdiler ◽  
Burc Gencel ◽  
Ergun Bozdag ◽  
Gulbahar Isık-Ozkol
Keyword(s):  
Fracture Strength ◽  
Fracture Resistance ◽  
Glass Fibers ◽  
Testing Machine ◽  
Acrylic Resin ◽  
Base Thickness ◽  
Denture Base ◽  
Significant Difference ◽  
Implant Overdenture ◽  
Student’S T

Abstract Objective This study aimed to assess the effect of reinforcement, denture base thickness, and acrylic resin types on dynamic and static fracture strength in mandibular implant overdentures with bar attachment. Materials and Methods One hundred and eight experimental mandibular implant overdentures with bar attachments were fabricated in three main groups, namely unreinforced (control: C), reinforced with unidirectional glass fibers (FR), and Co–Cr cast metal (MR). Each group included denture bases of 2-, 3-, and 4-mm thicknesses and produced with conventional (CA) and high-impact acrylic (HIA) resins. Specimens were thermocycled (5,000 times, 5–55°C) then subjected to a 400,000 cyclic load regime. Unbroken specimens were then loaded until fracture by a universal testing machine. Differences in mean fracture resistance among the groups were compared using the one-way analysis of variance (with post hoc Tukey's honestly significant difference test) and Student's t-tests (α = 0.05). Results Fracture strength increased significantly when the denture base thickness was increased (p = 0.001). The 2-mm denture base thickness was not enough for reinforcement. The fracture strength of the FR groups was significantly higher than other groups for 3- and 4-mm thicknesses (p = 0.001). The fracture strength of the HIA resin was significantly higher than CA resin in FR groups (p = 0.029 and p = 0.001). MR groups showed the weakest fracture strength. Conclusions The 2-mm denture base thickness had sufficient fracture strength without reinforcement and a positive relationship between acrylic resin thickness and fracture resistance was found.

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