scholarly journals Effect of Thermocycling, Teeth, and Polymerization Methods on Bond Strength Teeth-Denture Base

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Sandra Lúcia Andrade de Freitas ◽  
William Cunha Brandt ◽  
Milton Edson Miranda ◽  
Rafael Pino Vitti
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Acrylic Resin ◽  
Water Bath ◽  
Microwave Method ◽  
Denture Base ◽  
Mean Values ◽  
Acrylic Resins ◽  
Artificial Teeth

Objective. To evaluate the shear bond strength between different artificial teeth and denture base polymerized by two polymerization methods submitted to thermocycling. Materials and Methods. Two acrylic resins were selected according to the polymerization method (water-bath and microwave), and four different artificial teeth (Biotone, Dentsply; Trilux, Vipi Dent; Premium 8, Heraeus Kulzer; Soluut PX, Yamahachi) were also tested. The polymerization of the acrylic resin was performed by using conventional cycle (8 h at 74°C) in water-bath and using two cycles (20 min at 270 W + 5 min at 360 W) by the microwave method. The shear bond strength was evaluated after 24 h of water storage at 37°C (immediately) and after the thermocycling test (5,000 cycles, 5–55°C). The shear bond strength (n=10) was performed using a universal testing machine (Instron 4411) at a crosshead speed of 1.0 mm/min. Modes of failures were classified as cohesive and adhesive. The data (MPa) were statistically analyzed by three-way ANOVA, and the mean values were compared by the Tukey test (α = 0.05). Results. In general, the polymerization by microwave showed the highest shear bond strength values, and Trilux artificial teeth had the lowest bond strength values (p<0.05). Thermocycling did not affect the shear bond strength (p<0.05). There was a predominance of cohesive failures for all groups. Conclusions. The chemical composition of the artificial teeth affects the bond strength, and the microwave method is preferable to perform the acrylic resin polymerization.

scholarly journals Shear bond strength of novel calcium aluminate-based cement (EndoBinder) to root dentine

2014 ◽  
Vol 08 (04) ◽  
pp. 498-503 ◽  
Author(s):  
Lucas da Fonseca Roberti Garcia ◽  
Hebert Luis Rossetto ◽  
Fernanda de Carvalho Panzeri Pires-de-Souza
Keyword(s):  
Bond Strength ◽  
Calcium Aluminate ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Mineral Trioxide Aggregate ◽  
Acrylic Resin ◽  
Promising Alternative ◽  
Mean Values ◽  
Significant Difference ◽  
Molar Teeth

ABSTRACT Objective: To evaluate the shear bond strength of a novel calcium aluminate-based cement, EndoBinder (EB), to dentine in comparison with Grey and White Mineral Trioxide Aggregate (MTA). Materials and Methods: Root canal hemi-sections obtained from 30 extracted molar teeth were embedded in self-polymerized acrylic resin and were grounded wet in order to obtain a flat dentine surface. Next, the roots were randomly assigned into three groups (n = 10), according to the cement used, as follows: EB: EndoBinder; WMTA: White MTA and GMTA: Grey MTA. The shear bond strength test was performed using a Universal Testing Machine (0.5 mm/min) and the data were submitted to statistical analysis (1-way ANOVA and Tukey tests, P < 0.05). Results: EB presented the highest shear bond strength values; however, there was no statistically significant difference in comparison with GMTA (P > 0.05). WMTA presented the lowest mean values, which were significant in comparison with EB (P < 0.05). Conclusions: The novel calcium aluminate-based cement presented higher shear bond strength than WMTA, and should be considered as a promising alternative in endodontic therapy.

Resistência de união ao cisalhamento entre a resina composta e dentes artificiais de resina acrílica

2021 ◽  
Vol 10 (40) ◽  
pp. 33-37
Author(s):  
Joyce de Figueiredo Meira Barbosa ◽  
Lara Pepita de Souza Oliveira ◽  
Marcelo Nascimento Bruce ◽  
Jonas Alves Oliveira ◽  
Ligia Regina Mota Vasconcelos ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
Acrylic Resin ◽  
Single Bond ◽  
Group Iii ◽  
Group I ◽  
Significant Difference ◽  
Artificial Teeth

Acrylic denture teeth may suffer fracture or wear requiring the need for repair. This study aimed to evaluate the shear bond strength between acrylic resin artificial teeth restored with composite resin (with two different surface treatments) and acrylic resin (AR), simulating repair with these materials. Thirty artificial incisors were included by the palatal side in a circular microwave-polymerized AR base and polished on their buccal side with 120 and 320 grit sandpaper in a metallographic polisher and, then, divided into three groups: (I) restoration with self-cured AR; (II) conventional restoration with Z-100 composite resin with application of acid etching and Single Bond-3M adhesive; and (III) restoration with Z-100 composite resin with submersion for 30 seconds in acetone and application of Single Bond-3M adhesive. Shear bond strength tests were performed in a Universal Testing Machine (Instron). The results were submitted to ANOVA and Tukey (p<0.05) tests, in which Group I (33.26MPa ±10.76) and Group III (22.24MPa ±13.13) showed no statistically significant difference, but both were superior to Group II (10.31MPa ±5.62), which showed a lower value of shear bond strength. It can be concluded that composite resin restoration with acetone pretreatment can be a viable alternative for repair.

scholarly journals Influence of aging on bond strength of artificial teeth to denture base acrylic resins

2018 ◽  
Vol 17 ◽  
pp. 1-9 ◽  
Author(s):  
Etiene Faria Aguiar ◽  
Rafaella Tonani ◽  
Fabiana de Goes Paiola ◽  
Michelle Alexandra Chinelatti ◽  
Carolina Noronha Ferraz de Arruda ◽  
...  
Keyword(s):  
Bond Strength ◽  
Acrylic Resin ◽  
Denture Base ◽  
Thermomechanical Cycling ◽  
Acrylic Resins ◽  
Significant Difference ◽  
Different Types ◽  
Base Resin ◽  
Artificial Teeth ◽  
Denture Base Resin

Aim: The aim of this study was to evaluate the bond strength of artificial teeth to different types of denture base resins when submitted to thermomechanical cycling (TMC). Methods: Sixty artificial mandibular first molars (Trilux, Vipi) were randomly divided into 3 groups according to denture base acrylic resins (Vipi Wave, Vipi Cril, and Vipi Cril Plus, Vipi). The teeth were fixed onto self-polymerizing acrylic resin bars (0.5 cm2 cross-section x 2 cm height), and the set was included in a metal flask using dental stone/silicone. After the dental stone was set, the bar was removed, and the denture base resin was packed and processed according to the group studied (Vipi Wave: 180 W/20 minutes + 540W/5 minutes; Vipi Cril and Vipi Cril Plus: Water bath at 74ºC for 9h). After polymerization, the samples were divided into 2 groups (n=10), according to the TMC treatment received (simulation of 5 years of mastication or not). The samples were submitted to tensile bond strength test (1 mm/min), and the data (MPa) were statistically analyzed (2-way ANOVA, Bonferroni, α=0.05). The fracture interfaces were evaluated using a stereomicroscope (50x). Results: The bond strength results showed no statistically significant difference (p>0.05) between the resins studied. TMC was significant (p<0.05), demonstrating lower values for the bond strength of artificial teeth to Vipi Cril Plus. The predominant fracture type was cohesive in resin. Conclusions: It was concluded that there is no difference in bond strength between artificial teeth and the resins used for denture base. However, TMC decreases the bond strength values of artificial teeth and crosslink thermo-polymerizable acrylic resin.

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.

Comparative Evaluation of Shear Compressive Bond Strength between Cross-linked Acrylic Resin Denture Base and Cross-linked Acrylic Resin Teeth with Different Modifications of Their Ridge Lap Surfaces

2013 ◽  
Vol 14 (5) ◽  
pp. 898-903
Author(s):  
Prasad Rane ◽  
Leena Sadar ◽  
Swaroop Dhume ◽  
Neena Maniar ◽  
Jeevan Prakash Patil ◽  
...  
Keyword(s):  
Bond Strength ◽  
Comparative Evaluation ◽  
Testing Machine ◽  
Base Material ◽  
Slight Modification ◽  
Acrylic Resin ◽  
Denture Base ◽  
Anterior Teeth ◽  
The One ◽  
Artificial Teeth

ABSTRACT A major problem commonly observed in denture wearer is the detachment of artificial tooth/teeth from acrylic denture base. The problem was grave when porcelain teeth used along with the then available denture base materials. The bond formed was purely mechanical and hence debonding of teeth from denture base was a frequent occurrence. Inspite of chemical union between acrylic resin teeth and acrylic denture base material, detachment of teeth particularly anterior teeth is a frequent observation. The objective of the study is to study the effect of change in the surface treatment and surface configuration of ridge lap surface of the teeth on retention of cross-linked acrylic teeth on crosslinked acrylic resin denture base. Sixty specimens were tested for the shear compressive bond strength using instron universal testing machine in KN. Statistical analysis is used. The findings were analyzed using one-way analysis of variance (ANOVA) and ‘t’ test. Slight modification in the ridge lap surface of artificial teeth alters the strength of the shear compressive bond. Sand papering of ridge lap surfaces improves the shear compressive bond then the one without any modification. Maximum shear compressive bond strength can be increased by application of monomer How to cite this article Sadar L, Dhume S, Maniar N, Patil JP, Rane P, Gandhewar M. Comparative Evaluation of Shear Compressive Bond Strength between Cross-linked Acrylic Resin Denture Base and Cross-linked Acrylic Resin Teeth with Different Modifications of Their Ridge Lap Surfaces. J Contemp Dent Pract 2013;14(5):898-903.

scholarly journals Shear Bond Strength of Acrylic Teeth to Acrylic Denture Base after Different Surface Conditioning Methods

2013 ◽  
Vol 14 (5) ◽  
pp. 892-897 ◽  
Author(s):  
Nidhi Mehta ◽  
Gajula Venu Madhav ◽  
Soundar Raj ◽  
Naveen Yadav ◽  
Ishitha Mudgal ◽  
...  
Keyword(s):  
Bond Strength ◽  
Coupling Agent ◽  
Shear Bond Strength ◽  
Silane Coupling Agent ◽  
Testing Machine ◽  
Acrylic Resin ◽  
Denture Base ◽  
Surface Conditioning ◽  
Biological Compatibility ◽  
Silane Coupling

ABSTRACT Background and Objectives Acrylic resin ruled the dental profession for 60 years, and this success is attributed to its aesthetics, handling properties, physical and biological compatibility, its stability in oral environment and its cost effectiveness. The objective of this study is to evaluate and compare the bond strength of acrylic resin teeth treated with various conditioning materials like monomer and silane coupling agent. Methdology A study was carried out in which 96 samples were grouped into 3 groups with a sample size of 32 each (16 premolars, 16 molars). They were conditioned with different conditioning materials i,e monomer and silane coupling agent. Monomer, Silane coupling agent are coated on the ridge lap area before thermocycling and cured according to the manufacturer recommendations. The samples are retained from the flask; trimmed and polished. The samples are then subjected to shear bond strength using the Insteron Universal Testing Machine. Results In the present study it was found that application of monomer increased the bond strength between acrylic teeth and denture base, when compared to the conventionally processed samples. However it was found that application of silane coupling agent further increased the shear bond strength between acrylic teeth and denture base. Interprations and conclusions Within the confines of this study it is found that there was a significant improvement in the bond strength between the acrylic teeth and denture base when silane coupling agent and monomer were used as surface conditioning material. The order of shear strength of samples is control > monomer > silane coupling agent. How to cite this article Madhav GV, Raj S, Yadav N, Mudgal I, Mehta N, Tatwadiya R. Shear Bond Strength of Acrylic Teeth to Acrylic Denture Base after Different Surface Conditioning Methods. J Contemp Dent Pract 2013;14(5):892-897.

scholarly journals Effect of Provisional Cements on Shear Bond Strength of Porcelain Laminate Veneers

2011 ◽  
Vol 05 (04) ◽  
pp. 373-379 ◽  
Author(s):  
Subutay Han Altintas ◽  
Onjen Tak ◽  
Asli Secilmis ◽  
Aslihan Usumez
Keyword(s):  
Bond Strength ◽  
Calcium Hydroxide ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Acrylic Resin ◽  
Resin Cement ◽  
Control Group ◽  
Molar Teeth ◽  
Laminate Veneers ◽  
Selection Of

ABSTRACTObjectives: The purpose of this study was to evaluate the effect of three provisional cements and two cleaning techniques on the final bond strength of porcelain laminate veneers. Methods: The occlusal third of the crowns of forty molar teeth were sectioned and embedded in autopolymerizing acrylic resin. Dentin surfaces were polished and specimens were randomly divided into four groups (n=10). Provisional restorations were fabricated and two provisional restorations were cemented onto each tooth. Restorations were fixed with one of three different provisional cements: eugenol-free provisional cement (Cavex), calcium hydroxide (Dycal), and light-cured provisional cement (Tempond Clear). Provisional restorations were removed with either a dental explorer and air-water spray, or a cleaning bur (Opticlean). In the control group, provisional restorations were not used on the surfaces of specimens. IPS Empress 2 ceramic discs were luted with a dual-cured resin cement (Panavia F). Shear bond strength was measured using a universal testing machine. Data were statistically analyzed by ANOVA, Tukey’s HSD and Dunnett tests. Surfaces were examined by scanning electronic microscopy. Results: Significant differences were found between the control group and both the light-cured provisional cement groups and the eugenol-free provisional cement-cleaning bur group (P<.05). Groups that had received light-cured provisional cement showed the lowest bond strength values. Conclusions: Selection of the provisional cement is an important factor in the ultimate bond strength of the final restoration. Calcium hydroxide provisional cement and cleaning with a dental explorer are advisable. (Eur J Dent 2011;5:373-379)

scholarly journals Evaluation of Shear-Bond-Strength of Dental Self-Adhering Flowable Resin-Composite versus Total-Etch One to Enamel and Dentin Surfaces: An In-Vitro Study

2019 ◽  
Vol 7 (13) ◽  
pp. 2162-2166 ◽  
Author(s):  
Rasha M. Abdelraouf ◽  
Manar Mohammed ◽  
Fatma Abdelgawad
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
Testing Machine ◽  
Tooth Surface ◽  
Mean Values ◽  
Modes Of Failure ◽  
Group I ◽  
Permanent Molars

AIM: This study aimed to assess the shear bond strength of a self-adhering flowable resin composite versus a total-etch one to different surfaces of permanent-molars. MATERIAL AND METHODS: Thirty-six sound human permanent molars were used. The teeth were embedded in acrylic blocks, such that their buccal surfaces were shown. The teeth were divided into three groups: Group I: Uncut-Enamel, Group II: Cut-enamel-surfaces with minimal-grinding and Group III: dentin-surfaces. Half of the teeth in each group were used for bonding to a self-adhering flowable resin-composite (Dyad-flow, Kerr, USA). While the other half of each group was bonded to a total-etch flowable resin-composite (Filtek™Z350-XT,3M-ESPE, USA) which necessitate etching and bonding. Teflon-mold was used for constructing resin composite cylinders (3 × 3 mm) over the buccal surfaces. The Dyad-flow was applied in the central hole of the mould placed upon tooth-surface, and then light-cured for 20 seconds. The Filtek-Z350-XT was applied similarly after etching and bonding steps. The teeth were stored in 37°C distilled water for 24 hours. The strength was measured using a universal testing machine and statistically analysed. Modes of failure were studied using digital-microscope. RESULTS: Mean values of shear bond strength for the Dyad and Filtek-Z350-XT in the uncut-enamel were 3.5 and 24.6MPa respectively, while that for cut-enamel were 4.5 and 12.7MPa respectively (Both highly statistically significant P ≤ 0.01) and in dentin were 4.3 and 6.7MPa respectively (Statistically significant P ≤ 0.05). The failure mode for Dyad was mainly adhesive (un-cut or cut-enamel 83.3% adhesive and 16.7% mixed, while in dentin 100% adhesive). While the modes of failure for Filtek-Z350-XT in enamel, either cut or un-cut, were 50% cohesive and 50% mixed, whereas in dentin 100% adhesive. CONCLUSION: Bonding of self-etch ″Dyad-flow″ flowable resin-composite was lower than the total-etch one in enamel and dentin. Thus further material improvement may be required.

The Effect of Water Immersion on the Shear Bond Strength Between Chairside Reline and Denture Base Acrylic Resins

2007 ◽  
Vol 16 (4) ◽  
pp. 255-262 ◽  
Author(s):  
Andrea Azevedo ◽  
Ana Lucia Machado ◽  
Eunice Teresinha Giampaolo ◽  
Ana Claudia Pavarina ◽  
Carlos Eduardo Vergani
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Water Immersion ◽  
Denture Base ◽  
Effect Of Water ◽  
Acrylic Resins
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