Tensile bond strength of acrylic resin denture teeth to a microwave- or heat-processed denture base

2002 ◽  
Vol 88 (2) ◽  
pp. 145-150 ◽  
Author(s):  
Robert L. Schneider ◽  
Erik R. Curtis ◽  
James M.S. Clancy
Keyword(s):  
Bond Strength ◽  
Acrylic Resin ◽  
Tensile Bond Strength ◽  
Denture Base ◽  
Denture Teeth

Effect of Disinfection on the Bond Strength between Denture Teeth and Microwave-Cured Acrylic Resin Denture Base

2016 ◽  
Vol 27 (2) ◽  
pp. 169-176 ◽  
Author(s):  
Adaias O. Matos ◽  
Josiane O. Costa ◽  
Thamara Beline ◽  
Erika S. Ogawa ◽  
Wirley G. Assunção ◽  
...  
Keyword(s):  
Bond Strength ◽  
Acrylic Resin ◽  
Denture Base ◽  
Denture Teeth

scholarly journals Effect of Food Simulating Agents on the Hardness and Bond Strength of a Silicone Soft Liner to a Denture Base Acrylic Resin

2015 ◽  
Vol 9 (1) ◽  
pp. 402-408 ◽  
Author(s):  
A.A.R. Khaledi ◽  
M. Bahrani ◽  
S. Shirzadi
Keyword(s):  
Citric Acid ◽  
Bond Strength ◽  
Acrylic Resin ◽  
Tensile Bond Strength ◽  
Control Group ◽  
Denture Base ◽  
Bonding Failure ◽  
Base Resin ◽  
Soft Liner ◽  
Denture Base Resin

Statement of the Problem: Bonding failure between acrylic resin and soft liner material and also gradual loss of soft liner resiliency over time are two impending challenges frequently recognized with a denture base embraced with a resilient liner. Since patients drink various beverages, it is crucial to assess the influences of these beverages on physical characteristics of soft liners. Purpose: This in vitro study envisioned to assess the influence of food simulating agents (FSA) on the hardness of a silicone soft liner by employing a Shore A durometer test and also evaluate its bond strength to a denture base resin by using tensile bond strength test. Materials and Methods: To test the hardness of samples, 50 rectangular samples (40 mm × 10 mm × 3 mm) were prepared from a heat-polymerized polymethyl methacrylate (Meliodent). Mollosil, a commercially available silicone resilient liner, was provided and applied on the specimens following the manufacturer’s directions. In order to test tensile bond strength, 100 cylindrical specimens (30 mm × 10 mm) were fabricated. The liners were added between specimens with the thicknesses of 3 mm. The specimens were divided into 5 groups (n=10) and immersed in distilled water, heptane, citric acid, and 50% ethanol. For each test, we used 10 specimens as a baseline measurement; control group. All specimens were kept in dispersed containers at 37ºC for 12 days and all solutions were changed every day. The hardness was verified using a Shore A durometer and the tensile bond strength was examined by an Instron testing machine at a cross-head speed of 5 mm/min. The records were analyzed employing one-way ANOVA, Tukey’s HSD, and LSD tests. Results: The mean tensile bond strength ± standard deviation (SD) for Mollosil was as follows for each group: 3.1 ± 0.4 (water), 1.8 ± 0.4 (citric acid), 3.0 ± 0.4 (heptane), 1.2 ± 0.3 (50% ethanol), and 3.8 ± 0.4 (control). The hardness values for each group were: 28.7 ± 2.11 (water), 33.2 ± 2.82 (citric acid), 39.2 ± 4.8 (heptane), 32.3 ± 3.56 (50% ethanol) and 22.2 ± 2.08 (control). Mean values for hardness indicated that all of the food simulating agents significantly increased hardness of the Mollosil soft liner compared to the control group (p<0.05). The results of tensile bond strength depicted that water and FSA decreased the bond strength of the soft liner -denture base resin compared to the control group and it was statistically significant (p<0.05). Conclusion: The food simulating agents could influence the mechanical properties of silicone soft liners; hence, clinicians should inform their patients concerning their possible adverse effects and complications.

scholarly journals Assessing Tensile Bond Strength Between Denture Teeth and Nano-Zirconia Impregnated PMMA Denture Base

2020 ◽  
Vol Volume 15 ◽  
pp. 9611-9625
Author(s):  
Saleh Zidan ◽  
Nikolaos Silikas ◽  
Julfikar Haider ◽  
Abdulaziz Alhotan ◽  
Javad Jahantigh ◽  
...  
Keyword(s):  
Bond Strength ◽  
Tensile Bond Strength ◽  
Denture Base ◽  
Denture Teeth

scholarly journals Comparative Evaluation of Bond Strength between Ridge Lap Surface of Acrylic Teeth and Denture Base Resin: An In Vitro Study

2019 ◽  
Vol 07 (01) ◽  
pp. 012-018 ◽  
Author(s):  
Eeshita Sharma ◽  
Manjit Kumar ◽  
Rohit Sharma ◽  
Ajay Bansal ◽  
Sumit Katoch
Keyword(s):  
Bond Strength ◽  
Aluminum Oxide ◽  
Acrylic Resin ◽  
Control Group ◽  
Denture Base ◽  
Denture Teeth ◽  
Base Resin ◽  
Group A ◽  
Group B ◽  
Group D

Abstract Statement of Problem Acrylic teeth are preferred to porcelain teeth in dentures as they unite chemically with denture base resin, but their fracture from denture is common. Purpose The purpose of this study was to improve the bond strength of denture teeth to acrylic resin denture base by chemical or mechanical modification of the ridge lap surface of denture teeth. Materials and Methods Total 100 artificial cross-linked acrylic resin central incisors were divided into five groups: group A, 20 samples without modification (control group); group B, 20 samples (ridge lap surface of teeth treated with monomer); group C, 20 samples (ridge lap surface of teeth treated with monomer and the glaze layer removed with aluminum oxide abrasive stone); group D, 20 samples (ridge lap surface of teeth treated with dichloromethane); and group E, 20 samples (dichloromethane application followed by abrasion with aluminum oxide stone on ridge lap surface of teeth). They were mounted on wax blocks, and the blocks were acrylized. The bond strength values were obtained by subjecting the samples to shear compressive load under universal testing machine. Result The results were subjected to statistical analysis by applying analysis of variance and Bonferroni test for multiple group comparisons, and graphs were plotted. The mean value of bond strength was highest for group E (modified by aluminum oxide abrasion prior to dichloromethane application), followed by group C (modified by aluminum oxide abrasion prior to monomer application), group D (modified by dichloromethane application), group B (modified by monomer application), and lastly group A (control group). Significantly improved bond strength values were obtained in modified groups as compared with the control group. Conclusion Dichloromethane application followed by aluminum oxide abrasion provided the highest bond strength and is recommended to prevent debonding of the teeth from the denture base.

Comparison of Tensile Bond Strength of Soft Liners to an Acrylic Resin Denture Base with Various Curing Methods and Surface Treatments

2020 ◽  
Vol 33 (1) ◽  
pp. 56-62 ◽  
Author(s):  
Hamidreza Haghi ◽  
Masoud Shiehzadeh ◽  
Jafar Gharechahi ◽  
Davood Nodehi ◽  
Asad Karazhian
Keyword(s):  
Bond Strength ◽  
Acrylic Resin ◽  
Surface Treatments ◽  
Tensile Bond Strength ◽  
Denture Base ◽  
Curing Methods
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