The Effect of Trichloracetic Acid as a Hemostatic and Etching Agent on the Morphological Characteristics and Shear Bond Strength of Resin Composite to Enamel

2010 ◽  
Vol 35 (2) ◽  
pp. 187-193 ◽  
Author(s):  
M. Khoroushi ◽  
M. Tavasoli
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Clinical Relevance ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
Morphological Characteristics ◽  
Enamel Surface ◽  
Hemostatic Agent ◽  
Trichloracetic Acid

Clinical Relevance TCA gel etches enamel surfaces and produces surface morphological characteristics and bond strength similar to that produced by phosphoric acid. When TCA is used as a hemostatic agent on marginal gingiva, its inadvertent contact with enamel improves the immediate bond strength of resin composite to enamel. However, when using phosphoric acid and 50% TCA, an erosive enamel surface is produced.

scholarly journals Reparability of Aged Silorane With Methacrylate-Based Resin Composite: Micro-Shear Bond Strength and Scanning Electron Microscopy Evaluation

2012 ◽  
Vol 37 (1) ◽  
pp. 28-36 ◽  
Author(s):  
L Giachetti ◽  
D Scaminaci Russo ◽  
M Baldini ◽  
C Goracci ◽  
M Ferrari
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Bond Strength ◽  
Intermediate Layer ◽  
Clinical Relevance ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
Composite Restorations ◽  
Scanning Electron Microscopy Evaluation ◽  
Scanning Electron

Clinical Relevance Aged silorane composite restorations can be repaired with a methacrylate-based resin composite by using a phosphate-methacrylate–based adhesive as the intermediate layer.

scholarly journals Shear Bond Strength Evaluation of Resin Composite Bonded to GIC Using Three Different Adhesives

2009 ◽  
Vol 34 (4) ◽  
pp. 467-471 ◽  
Author(s):  
V. Gopikrishna ◽  
M. Abarajithan ◽  
J. Krithikadatta ◽  
D. Kandaswamy
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Strength Evaluation ◽  
Ionomer Cement

Clinical Relevance The bond strength of resin composite to glass-ionomer cement can be enhanced when a self-etching primer is employed over unset GIC or when a glass-ionomer based adhesive is employed over set GIC when compared to using a total-etch adhesive.

scholarly journals Shear Bond Strength of the Amalgam-Resin Composite Interface

2007 ◽  
Vol 32 (4) ◽  
pp. 341-346 ◽  
Author(s):  
C. Machado ◽  
E. Sanchez ◽  
S. Alapati ◽  
R. Seghi ◽  
W. Johnston
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
In Vitro Study ◽  
Vitro Study ◽  
Composite Interface

Clinical Relevance On the basis of the results of this in vitro study, resin composite may be an effective way to repair or mask the appearance of amalgams placed in visible areas of the mouth.

Shear Bond Strength of Porcelain Veneers Rebonded to Enamel

2015 ◽  
Vol 40 (3) ◽  
pp. E112-E121 ◽  
Author(s):  
HA St Germain ◽  
TH St Germain
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Aluminum Oxide ◽  
Shear Bond Strength ◽  
Resin Cement ◽  
Enamel Surface ◽  
Control Group ◽  
Significant Difference ◽  
Mode Of Failure ◽  
Group A

SUMMARY In this laboratory research, shear bond strength (SBS) and mode of failure of veneers rebonded to enamel in shear compression were determined. Three groups (A, B, and C; n=10 each) of mounted molar teeth were finished flat using wet 600-grit silicon carbide paper, and 30 leucite-reinforced porcelain veneers (5.0 × 0.75 mm) were air abraded on the internal surface with 50 μm aluminum oxide, etched with 9.5% hydrofluoric acid, and silanated. The control group (A) veneer specimens were bonded to enamel after etching with 37% phosphoric acid using bonding resin and a dual cure resin composite cement. Groups B and C were prepared similarly to group A with the exception that a release agent was placed before the veneer was positioned on the prepared enamel surface and the resin cement was subsequently light activated. The debonded veneers from groups B and C were placed in a casting burnout oven and heated to 454°C/850°F for 10 minutes to completely carbonize the resin cement and stay below the glass transition temperature (Tg) of the leucite-reinforced porcelain. The recovered veneers were then prepared for bonding. The previously bonded enamel surfaces in group B were air abraded using 50 μm aluminum oxide followed by 37% phosphoric acid etching, while group C enamel specimens were acid etched only. All specimens were thermocycled between 5°C and 55°C for 2000 cycles using a 30-second dwell time and stored in 37°C deionized water for 2 weeks. SBS was determined at a crosshead speed of 1.0 mm/min. SBS results in MPa for the groups were (A) = 20.6±5.1, (B) = 18.1±5.5, and (C) = 17.2±6.1. One-way analysis of variance indicated that there were no significant interactions (α=0.05), and Tukey-Kramer post hoc comparisons (α=0.05) detected no significant pairwise differences. An adhesive mode of failure at the enamel interface was observed to occur more often in the experimental groups (B = 40%, C = 50%). Rebonding the veneers produced SBS values that were not significantly different from the control group. Also, no significant difference in SBS values were observed whether the debonded enamel surface was air abraded and acid etched or acid etched only.

scholarly journals Shear bond strength of resin composite to enamel treated with Er:Y AG laser and phosphoric acid

2010 ◽  
Vol 10 (4) ◽  
Author(s):  
Nádia R. Svizero ◽  
Renato S. Carvalho ◽  
Lucirene A. Domingues ◽  
Carolina N. Pegorado ◽  
Carlos Henrique Francischone ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Er:Yag Laser ◽  
Resin Composite ◽  
Control Group ◽  
Third Molars ◽  
Dental Crowns ◽  
Acid Control ◽  
Composite Cylinders

The purpose of this work was to evaluate the shear bond strength of resin composite to enamel treated with Er:YAG laser. It was used 33 human third molars. After the dental crowns cutting, the mesial and distal surfaces were embedded perpendicularly to the PVC cylinders long axis. Enamel was ground and the samples were randomly divided into 6 groups: G1- phosphoric acid (control), G2- Er:YAG laser (60mJ/10Hz), G3- Er:YAG (100mJ/10Hz), G4- Er:YAG (60mJ/10Hz + acid), G5- Er:YAG (100mJ/ 10Hz + acid), G6- Er:YAG (80mJ/2Hz). In all groups, Single Bond was used and resin composite cylinders (Z100) were prepared. The samples were stored in distilled water at 37oC for 24 hours and submitted to shearing test. G1 presented bond strength values significantly higher than G2, G3 and G6. The groups irradiated only with Er:YAG laser, in different intensities and frequencies, were equivalent as for the bond strength values. The groups treated with laser + acid presented strength values statistically equal to those of the control group. The enamel treatment with phosphoric acid, or its association with laser, is important to obtain good bond. The use of Er: YAG laser alone is not recommended, considering the conditions tested in this study.

scholarly journals Effect of Bleaching with Strawberry Extract and Hydrogen Peroxide on Colour Change, Surface Morphology and Micro-Shear Bond Strength of Resin Composite to Enamel Surface

2021 ◽  
Author(s):  
Rajith Radhakrishnan ◽  
Ravikumar Nesamani ◽  
Kavitha Sanjeev ◽  
Mahalaxmi Sekar
Keyword(s):  
Hydrogen Peroxide ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
Negative Control ◽  
Enamel Surface ◽  
P Value ◽  
Group 2 ◽  
Colour Coordinates ◽  
Group 1

Introduction: The search to replace the chemical bleaching agent namely the Hydrogen Peroxide (HP) with a natural substance to whiten the discoloured tooth is a need of the hour, due to the severe roughing and compromised bonding of resin composite to enamel surface by this agent. Aim: To evaluate and compare the colour and surface changes in enamel surface, and the micro-shear bond strength of resin composite to enamel following bleaching with 35% HP and 2% Strawberry Extract (SE). Materials and Methods: In this in-vitro study, 30 bovine maxillary central incisors were decoronated and allocated randomly to two groups: group 1 (negative control) (n=15) and group 2 (experimental) (n=15). To evaluate the bleaching efficacy, group 2 specimens were experimentally stained with tea. Baseline colour coordinates (pre-bleach values) (L*, a*, b*) (∆E) were recorded. The crowns were sectioned to obtain four equal parts to obtain 60 specimens and these were allotted randomly to 4 subgroups a, b, c, d (n=15 each) based on the bleaching protocol. Subgroup a, Hydrogen Peroxide (HP). subgroup b, Strawberry Extract (SE); subgroup c, HP+SE (HPS); subgroup d, HP/P (HP/ Proanthocyanidin). Following bleaching, colour coordinates (post-bleach values) (L*, a*, b*) (∆E) were measured as mentioned before. Qualitative analysis of the surface (n=2) for each group was performed using scanning electron microscopy. Micro-shear bond strength of resin composite to the treated specimens (n=13) was determined using universal testing machine at a crosshead speed of 1 mm/min. Kruskal-Wallis one-way Analysis of Variance (ANOVA) was used to calculate the p-value and Post-Hoc Tukey Honest significant Test (HSD) was used to identify the significant groups, p-value (<0.05). Results: All the post-bleach specimens showed significantly higher mean ∆E (more whiter) values compared to their respective pre-bleach specimens (baseline values) (p-value -<0.05). Among the post-bleach groups, highest ∆E values (more whiter) were observed in subgroup 2c(HPS) (p-value=0.029). Similarly minimal morphological surface irregularities were observed in HPS. Group 1 (negative control) had the highest micro-shear bond strength compared to the experimental groups (group 2). Significantly, higher micro-shear bond strength was observed in subgroups 2b,c,d (SE, HPS, HPP) compared to subgroup 2a(HP) (p-value <0.001). Conclusion: SE alone or in combination with HP is an efficient and effective dental bleaching agent.

scholarly journals Shear bond strength of enamel surface treated with air-abrasive system

2002 ◽  
Vol 13 (3) ◽  
pp. 175-178 ◽  
Author(s):  
Maria Cristina Borsatto ◽  
Alma Blásida Elisaur Benitez Catirse ◽  
Regina Guenka Palma Dibb ◽  
Telma Nunes do Nascimento ◽  
Renata Andréa Salvitti de Sá Rocha ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Aluminum Oxide ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Enamel Surface ◽  
Acid Etching ◽  
Air Abrasion ◽  
Group Iii ◽  
Group I

The aim of this study was to evaluate the shear bond strength of a composite resin to dental enamel, using three different surface treatments. Fifteen sound third molars were randomly assigned to three groups. The mesial and distal surfaces were flattened and covered using adhesive tape with a central orifice delimiting the adhesion area (7.07 mm²). Group I, the enamel surface was conditioned with 37% phosphoric acid for 15 s; group II, the surface was treated using air abrasion with aluminum oxide; group III, the enamel surface was treated using an association of air abrasion with aluminum oxide and 37% phosphoric acid. The Single Bond (3M) adhesive system was applied and a Teflon matrix was placed and filled with composite resin Z-100 (3M) and light-cured. The shear bond strength test was performed with a universal testing machine. The acid etching technique and air abrasion with aluminum oxide associated with acid etching had the highest shear bond strength values. Data were subjected to statistical analysis using ANOVA and the Tukey test, and no statistically significant difference in shear bond strength was observed between group I (12.49 ± 2.85 MPa) and group III (12.59 ± 2.68 MPa). In contrast, both groups had statistically better shear bond strengths compared to group II (0.29 ± 0.56 MPa; p<0.05). Air abrasion with aluminum oxide does not substitute acid etching. The association of these methods to obtain adequate adhesion to the substrate is necessary.

Shear Bond Strength of Two Resin Cements to Human Root Dentin Using Three Dentin Bonding Agents

10.2341/06-3 ◽  
2007 ◽  
Vol 32 (1) ◽  
pp. 31-36 ◽  
Author(s):  
C. Gogos ◽  
C. Stavrianos ◽  
I. Kolokouris ◽  
N. Economides ◽  
I. Papadoyannis
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Clinical Relevance ◽  
Shear Bond Strength ◽  
The Self ◽  
Resin Cements ◽  
Bonding Agents ◽  
Dentin Bonding ◽  
Edta Solution ◽  
Root Dentin

Clinical Relevance The application of 15% EDTA solution was shown to be an alternative to the commonly used 37% phosphoric acid in the bonding procedures of resin cements. The self-etching adhesive tested was found to improve bond strength more than one-bottle adhesives.

Shear bond strength of a resin composite to enamel etched with maleic or phosphoric acid

1994 ◽  
Vol 39 (5) ◽  
pp. 292-297 ◽  
Author(s):  
Kerrod B. Hallett ◽  
Franklin Garcia-Godoy ◽  
Amanda R. Trotter
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Resin Composite
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