The Effect of Plasma Treatment on Shear Bond Strength of Soft Denture Liner with Two Different Types of Denture Base Material ( Heat Cure and Light Cure )

2014 ◽  
Vol 26 (2) ◽  
pp. 44-49
Author(s):  
Zainab S. Abdullah ◽  
Wasmaa S. Mahmood ◽  
Rafah A. Ibrahem
Keyword(s):  
Bond Strength ◽  
Plasma Treatment ◽  
Shear Bond Strength ◽  
Base Material ◽  
Denture Base ◽  
Heat Cure ◽  
Different Types ◽  
Soft Denture Liner

scholarly journals Comparison of Bond Strength of Acrylic, Composite, and Nanocomposite Artificial Teeth to Heat-Cure Acrylic Denture Base Resin

2019 ◽  
Author(s):  
Tahereh Ghaffari Gharebagh ◽  
Fahimeh Hamedirad ◽  
Keyvan Miruzadeh
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Tooth Surface ◽  
Denture Base ◽  
Heat Cure ◽  
Base Resin ◽  
Bond Strengths ◽  
The Mean ◽  
Artificial Teeth ◽  
Denture Base Resin

Objectives: The present study aimed to evaluate the bond strength of heat-cure denture base resin to newly designed Iranian artificial acrylic teeth. Materials and Methods: In this in-vitro experimental study, shear bond strengths of Ivoclar acrylic, Apple composite, and B-Star nanocomposite teeth to heat-cure acrylic denture base resin were compared. A total of 18 samples were selected from each group of teeth. The samples were attached to heat-cure resin according to ISO 10477 standard. For the assessment of bond strength, the samples were placed in a universal testing machine and were subjected to shear forces at a speed of 1 mm/minute to record the fracture load. Descriptive statistics, including frequency, mean, and standard deviation, were calculated using SPSS 20 software. Two-way analysis of variance was used to compare the shear bond strength of the groups with and without monomers and the studied artificial teeth. Results: The mean shear bond strengths of Ivoclar acrylic teeth were 392.22±23.76 MPa and 337.11±32.18 MPa with and without adding monomers to the tooth surface, respectively. The mean shear bond strengths were 250.44±29.84 MPa and 238.33±27.28 MPa (without monomers) and 438.33±24.16 MPa and 311.56±32.78 MPa (with monomers) for Apple composite and B-Star nanocomposite artificial teeth, respectively. Conclusion: The greatest shear bond strength was attributed to Ivoclar acrylic teeth followed by Apple composite and B-Star nanocomposite artificial teeth. Addition of monomers to the tooth surface significantly strengthened the shear bonding of acrylic base resin to the teeth.

scholarly journals Kekuatan ikat geser gigi artifisial akrilik dan porselen pada tiga macam basis gigi tiruan nilon termoplastikThe shear bond strength of acrylic and porcelain teeth in three types of thermoplastic nylon denture bases

2019 ◽  
Vol 31 (1) ◽  
Author(s):  
Miftahussakinah Rizani ◽  
Hubban Nasution
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Base Material ◽  
Central Incisor ◽  
Denture Base ◽  
Maxillary Central Incisor ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Artificial Teeth

Pendahuluan: Kekuatan ikat geser adalah kekuatan maksimum suatu material untuk menahan atau menerima gaya geser hingga lepas atau terjadinya fraktur. Ini merupakan salah satu hal yang penting dalam penggunaan gigi tiruan, terutama pada gigi tiruan sebagian lepasan dengan bahan basis nilon termoplastik. Kekurangan bahan basis ini adalah sering terlepasnya gigi artifisial dari basis gigi tiruannya. Tujuan penelitian ini adalah untuk mengetahui perbedaan kekuatan ikat geser antara gigi artifisial akrilik maupun porselen dengan bahan basis gigi tiruan nilon termoplastik Valplast™, TCS™ dan Biotone™.  Metode: Jenis penelitian ini adalah eksperimental laboratoris. Sampel yang digunakan pada penelitian ini terdiri dari 18 gigi artifisial insisivus sentralis rahang atas akrilik dan 18 gigi artifisial insisivus sentralis rahang atas porselen yang dibagi ke dalam 6 kelompok. Tiap sampel ditanamkan pada bahan basis gigi tiruan berbentuk silindris dengan diameter 18 mm dan tinggi 20 mm. Sampel di uji dengan menggunakan alat Universal Testing Machine. Data dianalisis dengan menggunakan uji ANOVA satu arah. Hasil: Terdapat perbedaan kekuatan ikat geser yang signifikan (p<0,05). Pada kedua gigi artifisial kelompok dengan basis Valplast™ memiliki nilai kekuatan ikat geser tertinggi, lalu diikuti dengan kelompok TCS™ dan Biotone™. Simpulan: Nilai kekuatan ikat geser berbeda pada gigi artifisial akrilik maupun porselen pada tiga macam basis gigi tiruan nilon termoplastik.Kata kunci: Kekuatan ikat geser, nilon termoplastik, gigi artifisial akrilik, gigi artifisial porselen. ABSTRACTIntroduction: Shear bond strength is the maximum strength of a material to hold or accept shear forces until detached or fractured. This strength is one of the essential things in the denture usage, especially in removable partial denture with nylon thermoplastic base material. The disadvantage of this material base is the frequent detachment of artificial teeth from the denture base. The purpose of this study was to determine the difference of the shear bond strength between acrylic and porcelain teeth with thermoplastic nylon denture base material of Valplast™, TCS™, and Biotone™. Methods: The type of research was an experimental laboratory. The sample used in this study consisted of 18 acrylic maxillary central incisor artificial teeth and 18 porcelain maxillary central incisor artificial teeth divided into 6 groups. Each sample was implanted in cylindrical denture base material with a diameter of 18 mm and a height of 20 mm. The sample was tested using a Universal Testing Machine. Data were analysed using a one-way ANOVA test. Result: There were significant differences in the shear bond strength (p < 0.05) in both artificial teeth, with the group of Valplast™ base had the highest shear bond strength value, followed by the TCS™ and Biotone™ groups. Conclusion: The shear bond strength values of acrylic and porcelain teeth in three types of thermoplastic nylon denture bases were significantly different.Keywords: Shear bond strength, thermoplastic nylon, acrylic teeth, porcelain teeth.

scholarly journals Comparing the Shear Bond Strength with Acrylic Teeth, Hardness, Surface Roughness and Cost-benefit of three Different Denture Base Materials

2018 ◽  
Vol 11 (4) ◽  
pp. 2181-2190
Author(s):  
Humam M. Al-somaiday ◽  
M. A. Mohammed Moudhaffer ◽  
Mahmood Jasim Alsamydai
Keyword(s):  
Surface Roughness ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Base Material ◽  
Cost Benefit ◽  
Mean Value ◽  
Denture Base ◽  
Base Materials ◽  
Us Dollar ◽  
Artificial Teeth

One of the major problem affecting the denture function is the detachment of the artificial teeth from denture as a result to the higher chewing capacity that will rise the risk of artificial teeth displacement. Displacement of the teeth may precede by changing in the material properties affecting the denture function that is why surface roughness and hardness considered as a predictor for the material behaviors and performance. Replacing a denture may cause a burden to the patients, hence, the material and fabrication coasts of dentures should be considered as one of the major factors affecting the selection of the denture base material, as in some cases a base material with impressive propertied limitedly used because of its expenses.[1] In this study, shear bond strength with acrylic teeth, hardness, surface roughness and the net benefits, associated with alternatives for achieving defined treatment objective, were evaluated by comparing some properties of three different denture base materials with the cost of each one in Iraq. A total of (90) specimens of polycarbonate, injectable acrylic and conventional heat cured acrylic were fabricated according to manufacturer’s instructions and divided into (3) groups, (30) specimens for each testing group i.e. the shear bond strength with acrylic teeth, shore D hardness and surface roughness (10 specimens for each testing material). the total cost of each specimens group was collected and calculated to evaluate the overall cost benefit of each material. Highly significant differences (P≤ 0.01) between all the (3) experimental materials were noticed after analyzing each test's results with descriptive statistical analysis, one-way ANOVA and post-hoc LSD, except for the shore D hardness whereas a non-significant differences(P> 0.05) between heat cured and injectable acrylic was found. The heat cured acrylic has the highest mean value of the shear bond strength with acrylic teeth (516.1 N) followed by the injectable acrylic with (329.9 N) mean value while the lowest mean value was for the Polycarbonate (180.1 N). Furthermore, the injectable acrylic has the highest mean value in shore D hardness (91.96), followed by the heat cured acrylic (91.5), then Polycarbonate (82.94). As for surface roughness, the Polycarbonate has the highest mean value (0.31703) followed by the injectable acrylic (0.2129), then the heat cured acrylic (0.10367). Finally, Polycarbonate has the highest mean value of the specimens’ cost in Iraq (10.022 US dollar /specimens), followed by the injectable acrylic (8.695 US dollar /specimens) then the heat cured acrylic (3.243 US dollar /specimens). All thermoplastic materials included in this study (Injectable acrylic and Polycarbonate) exhibited higher cost with lower properties in comparison with heat cured acrylic material for the selected tests.

scholarly journals Shear Bond Strength of Four Different Repair Materials Applied to Bis-acryl Resin Provisional Materials Measured 10 Minutes, One Hour, and Two Days After Bonding

2014 ◽  
Vol 39 (4) ◽  
pp. E147-E153 ◽  
Author(s):  
JS Shim ◽  
YJ Park ◽  
ACF Manaloto ◽  
SW Shin ◽  
JY Lee ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Base Material ◽  
Measuring System ◽  
Cohesive Failure ◽  
Repair Materials ◽  
Different Types ◽  
Bond Strengths ◽  
Provisional Restoration

SUMMARY This study investigated the shear bond strength of repaired provisional restoration materials 1) to compare the bond strengths between bis-acryl resin and four different materials and 2) to investigate the effect of the amount of time elapsed after bonding on the bond strength. The self-cured bis-acryl resin (Luxatemp) was used as the base material, and four different types of resins (Luxatemp, Protemp, Z350 flowable, and Z350) were used as the repair materials. Specimens were divided into three groups depending on the point of time of shear bond strength measurement: 10 minutes, one hour, and 48 hours. Shear bond strengths were measured with a universal testing machine, and the fracture surface was examined with a video measuring system. Two-way analysis of variance revealed that the repair materials (p&lt;0.001) and the amount of time elapsed after bonding (p&lt;0.001) significantly affected the repair strength. All of the repaired materials showed increasing bond strength with longer storage time. The highest bond strength and cohesive failure were observed for bonding between Luxatemp base and Luxatemp at 48 hours after bonding.

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