scholarly journals Optimization of Heat-Dried Silane Application for CAD/CAM Ceramic Resin Bonding

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Greciana Bruzi Brasil Pinto ◽  
MAGNE P ◽  
BRUZI G ◽  
CARVALHO A ◽  
ENCISO R ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Acrylic Resin ◽  
Boiling Water ◽  
Hot Air Drying ◽  
Air Drying ◽  
Hot Air ◽  
Before And After ◽  
Cad Cam

Purpose. Evaluate surface treatments and silane application methods and their effect on shear bond strength (SBS) before and after aging. Materials and methods. Slices of IPS e.max CAD and Vitablocs Mark II, were embedded in acrylic resin. The block was randomly assigned to 5 groups; E:etching with hydrofluoric acid (HF), rinsing, followed by cleaning in ultrasonic bath; E/S:HFetching and cleaned as group E followed by silane application for 20s, air drying and hot drying; E/S+:HFetching and cleaned as group E, followed by silane application for 60s, air drying and hot air drying, rinsing with boiling water and hot air drying; S:silane application for 20s followed by air drying and hot air drying; S+:silane application for 60s followed by air drying, air drying and hot air drying, rinsing in boiling water and hot drying. Cylinders of composite resin (n=12) were bonded with adhesive. SBS testing was carried out after 24h or after thermocycling for groups E; E/S and E/S+. Results. For 24h SBS showed significantly higher mean bond strength with E/S, for both ceramic, compared to E and E/S+. The use of silane alone showed significantly lower mean bond strength. No significant differences were found between E/S and E/S+ for VITA. The SBS was negatively affected by simulated aging in E/S group and positively in E/S+. Conclusions. The association of HFetching and a heat-dried silane showed to be significant to obtain a high SBS. Furthermore, the optimized silane application is not relevant to the immediate SBS while it enhances after aging.

scholarly journals Optimization of Heat-Dried Silane Application for CAD/CAM Ceramic Resin Bonding

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Greciana Bruzi Brasil Pinto ◽  
MAGNE P ◽  
BRUZI G ◽  
CARVALHO A ◽  
ENCISO R ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Acrylic Resin ◽  
Boiling Water ◽  
Hot Air Drying ◽  
Air Drying ◽  
Hot Air ◽  
Before And After ◽  
Cad Cam

Purpose. Evaluate surface treatments and silane application methods and their effect on shear bond strength (SBS) before and after aging. Materials and methods. Slices of IPS e.max CAD and Vitablocs Mark II, were embedded in acrylic resin. The block was randomly assigned to 5 groups; E:etching with hydrofluoric acid (HF), rinsing, followed by cleaning in ultrasonic bath; E/S:HFetching and cleaned as group E followed by silane application for 20s, air drying and hot drying; E/S+:HFetching and cleaned as group E, followed by silane application for 60s, air drying and hot air drying, rinsing with boiling water and hot air drying; S:silane application for 20s followed by air drying and hot air drying; S+:silane application for 60s followed by air drying, air drying and hot air drying, rinsing in boiling water and hot drying. Cylinders of composite resin (n=12) were bonded with adhesive. SBS testing was carried out after 24h or after thermocycling for groups E; E/S and E/S+. Results. For 24h SBS showed significantly higher mean bond strength with E/S, for both ceramic, compared to E and E/S+. The use of silane alone showed significantly lower mean bond strength. No significant differences were found between E/S and E/S+ for VITA. The SBS was negatively affected by simulated aging in E/S group and positively in E/S+. Conclusions. The association of HFetching and a heat-dried silane showed to be significant to obtain a high SBS. Furthermore, the optimized silane application is not relevant to the immediate SBS while it enhances after aging.

Shear bond strength between acrylic resin teeth and composite resin

2014 ◽  
Vol 30 ◽  
pp. e38-e39
Author(s):  
M.A. Basílio ◽  
K.V. Cardoso ◽  
G.M.R.M. De Souza ◽  
E.M. Mariscal ◽  
J.N. Arioli-Filho
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Acrylic Resin

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 Effects of surface treatment of provisional crowns on the shear bond strength of brackets

2013 ◽  
Vol 18 (4) ◽  
pp. 29-34 ◽  
Author(s):  
Josiane Xavier de Almeida ◽  
Mauren Bitencourt Deprá ◽  
Mariana Marquezan ◽  
Luciana Borges Retamoso ◽  
Orlando Tanaka
Keyword(s):  
Bond Strength ◽  
Aluminum Oxide ◽  
Surface Treatment ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Acrylic Resin ◽  
Surface Treatments ◽  
Surface Roughening ◽  
Bonding Material ◽  
Adhesive Remnant Index

OBJECTIVE: To assess the adhesive resistance of metallic brackets bonded to temporary crowns made of acrylic resin after different surface treatments. METHODS: 180 specimens were made of Duralay and randomly divided into 6 groups (n = 30) according to surface treatment and bonding material: G1 - surface roughening with Soflex and bonding with Duralay; G2 - roughening with aluminum oxide blasting and bonding with Duralay; G3 - application of monomer and bonding with Duralay; G4 - roughening with Soflex and bonding with Transbond XT; G5 - roughening with aluminum oxide blasting and bonding with Transbond XT and G6: application of monomer and bonding with Transbond. The results were statistically assessed by ANOVA/Games-Howell. RESULTS: The means (MPa) were: G1= 18.04, G2= 22.64, G3= 22.4, G4= 9.71, G5= 11.23, G6= 9.67. The Adhesive Remnant Index (ARI) ranged between 2 and 3 on G1, G2 and G3 whereas in G4, G5 and G6 it ranged from 0 to 1, showing that only the material affects the pattern of adhesive flaw. CONCLUSION: The surface treatment and the material influenced adhesive resistance of brackets bonded to temporary crowns. Roughening by aluminum blasting increased bond strength when compared to Soflex, in the group bonded with Duralay. The bond strength of Duralay acrylic resin was superior to that of Transbond XT composite resin.

Hot Air Drying Characteristics of Sukkari Date (Phoenix dactylifera L.) and Effects of Drying Condition on Fruit Color and Texture

2015 ◽  
Vol 11 (3) ◽  
pp. 421-434 ◽  
Author(s):  
Alhussein M. Al-Awaadh ◽  
Bakri H. Hassan ◽  
Khaled M. A. Ahmed
Keyword(s):  
Phoenix Dactylifera ◽  
Fruit Color ◽  
Air Velocity ◽  
Hot Air Drying ◽  
Drying Time ◽  
Air Drying ◽  
Drying Temperature ◽  
Hot Air ◽  
Air Temperatures ◽  
Before And After

Abstract Convective hot air drying was used to dry date fruits at different air temperatures and velocities. The kinetics of drying was evaluated by 10 common models. The fruit color and texture were examined before and after drying. Drying time increased as both drying temperature and air velocity decreased. Best fits to the experimental data were provided by the Midilli and Kucuk model, followed by the logarithmic, two-term exponential, and Henderson–Pabis models. Drying affected the fruit color and texture. To minimize such changes, the range of drying temperature and air velocity should be 60–70°C and 2 m/s, respectively.

The Effect of Mechanical Loading on the Cusp Deflection of Premolars Restored with Direct and Indirect Techniques

2014 ◽  
Vol 15 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Lourenço Correr Sobrinho ◽  
Sandra Costa Zamboni ◽  
Lafayette Nogueira ◽  
Marco Antonio Bottino ◽  
Luiz Felipe Valandro
Keyword(s):  
Mechanical Loading ◽  
Composite Resin ◽  
Compressive Loading ◽  
Axial Loading ◽  
Acrylic Resin ◽  
Fatigue Load ◽  
Mechanical Cycling ◽  
Before And After ◽  
Cad Cam ◽  
Indirect Composite

ABSTRACT Aim This study assessed the effect of fatigue load cycling on human premolars restored with MOD restorations (direct and indirect approaches) on cuspal deflection, compared to intact teeth (unprepared) and unrestored teeth with an inlay preparation. Materials and methods MOD inlay preparations were performed on sixty premolars with their roots embedded in acrylic resin. These teeth were divided into six groups (n = 10): (1) intact teeth; (2) unrestored and prepared teeth; (3) teeth restored with direct composite resin; (4) teeth restored with an indirect composite resin; (5) teeth restored with injected ceramic inlays (IPS Empress 2 (Ivoclar); (6) teeth restored with CAD/CAM inlays made of feldspathic ceramic (Vita Mark II). All of the indirect restorations were adhesively cemented. Strain-gauges were bonded to the buccal and lingual surfaces of the specimens. Compressive axial loading of 100N was applied on the occlusal face of the specimens to measure the cuspal deflection (microstrain) under compressive loading. These measurements were obtained before and after mechanical cycling (1 Hz, 37°C, 100,000x). Results Comparing the results obtained before and after fatiguing, the cuspal deflection increased only in the CAD/CAM approach. The prepared tooth group had the highest cuspal deflection, before and after mechanical cycling. Conclusion the evaluated restoring approaches decrease the cuspal deflection, consequently appear to improve the cuspal reinforcement. How to cite this article Zamboni SC, Nogueira L, Bottino MA, Sobrinho LC, Valandro LF. Effect of Mechanical Loading on the Cusp Deflection of Premolars Restored with Direct and Indirect Techniques. J Contemp Dent Pract 2014;15(1):75-81.

scholarly journals Shear bond strength of orthodontic tubes bonded directly with composite resin reinforcement on the enamel surface

2021 ◽  
Vol 10 (16) ◽  
pp. e195101623481
Author(s):  
Tainah Oliveira Rifane ◽  
Ítalo Hudson Tavares Maia ◽  
Andressa Silva de Oliveira ◽  
Ranyele Elis Alexandre Rodrigues ◽  
Francisbênia Alves Silvestre ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Acrylic Resin ◽  
Fracture Analysis ◽  
Strength Test ◽  
Enamel Surface ◽  
Tube Surface ◽  
Control Tube ◽  
And Control

To evaluate the shear bond strength and the fracture type of orthodontic tubes bonded directly with composite resin throughout the enamel surface. 30 bovine teeth were cut into 3 slices with 5 mm each and embedded in PVC pipes with acrylic resin exposing the buccal face. Subsequently, the teeth were submitted to conventional bonding techniques. Natural Ortho resin was applied for direct bonding of Edgewise Standard orthodontic tubes (Morelli®) and light-cured for 20s. A different viscosity resin was chosen and light-cured for 40s to reinforce the tube surface. The samples were divided into the following groups: Orthodontic tube with direct bonding without reinforcement (CONTROL), Tube with Natural Ortho resin + Reinforcement (NO + NO), Tube with Natural Ortho resin + Reinforcement with Flow resin (NO + FL). These were submitted to shear bond strength; immediate and 1-year aging fracture analysis after simulated through thermocycling. In the shear bond strength test, the group of orthodontic tubes that were directly bonded with Natural Ortho resin and reinforced (NO + NO) showed greater strength results after 24 hours and 1 year with values of (p=0.0225) and (p=0.0273). It was statistically differentto the NO + FL and CONTROL reinforced groups. In the fracture analysis, the NO +NO group was classified immediately as composite cohesive, and mixed failure after aging by thermocycling. The addition of a composite resin layer on the surface of the directly bonded orthodontic tube improved bond strength. The reinforcement must be carried out in regular consistency and the use of Flow resin is not indicated.

scholarly journals THE EFFECT OF AIR DRYING TIME ON BONDING (SELF ETCH) WITH ETHANOL AS A SOLVENT TO THE SHEAR BOND STRENGTH OF BIOACTIVE COMPOSITE RESIN

2021 ◽  
Vol 6 (1) ◽  
pp. 65
Author(s):  
Devi Rosalinda ◽  
Dewi Puspitasari ◽  
Muhammad Yanuar Ichrom Nahzi
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
Composite Resins ◽  
Drying Time ◽  
Air Drying ◽  
A Value ◽  
Bonferroni Test ◽  
Self Etch

ABSTRACTBackground: Surface resistance between composite resin and dentin is currently one of the problems of restorative materials. Failure ofcomposite resin are still being reported in clinical studies with failure rates ranging between 5-45% based on observations for 5-17 years. Bioactive composite resin is a new type of composite resin that has mechanical and chemical properties similiar to teeth. The use of resins, bonding materials, drying time of the solvent, and type of solvent also affect the shear bond strength Purpose: The purpose of this study was to analyze the effect of air drying time bonding (self-etch) with ethanol as a solvent on the shear bond strength of bioactive composite resins. Methods: This study used 32 non-carious maxillary premolar teeth that were fixed using acrylic resin. Fiber glass with a diameter of 3 mm and thickness of 3 mm were fixed to dentin surface and applied using bioactive composite resin were divided into 4 treatment group, i.e. the group without air drying, 20 s, 40 s, and 60 s. Shear bond strength test using Universal Testing Machine. Results: One Way Anova and Post Hoc Bonferroni test showed significant differences with p=0,002 (p<0,05). The average shear bond strength value of the lowest bioactive composite resin in the group bonding without air drying with a value of 6.381 ± 2.818 MPa and the highest shear bond strength value of the bioactive composite resin in the 60 seconds bonding air drying group with a value of 11.873 ± 2.931 MPa. Conclusion: The air drying time of the bonding affects the shear bond strength of the bioactive composite resin.Keywords: Air drying time, bioactive composite resin, bonding, ethanol, shear bond strength.

Sign in / Sign up

Export Citation Format

Share Document