The Influence of Different Surface Cleansing Agents on Shear Bond Strength of Contaminated Lithium Disilicate Ceramic: An In Vitro Study

Background and Purpose. Contamination of the lithium disilicate (LDS) during the try-in procedure is unavoidable and may weaken the bond strength of restoration. The purpose of this study was to investigate the efficacy of different surface cleansing agents on the shear bond strength (SBS) of contaminated LDS. Materials and Methods. Seventy LDS specimens were randomly divided into seven groups. The first group was noncontaminated surface (PC). The six other groups were contaminated with the saliva and silicone disclosing medium and treated with no surface cleansing agent (NC); phosphoric acid (PO); Ivoclean (IV); sodium hydroxide solution (NA); Restorative Cleansing Agent (RC); and hydrofluoric acid (HF). Then, LDS specimens were cementated with Panavia V5 to resin composite rod. Each specimen was subjected to an SBS test. The modes of failure was inspected under light microscope. The surface element of each group was examined by SEM-EDS. Results. The results were analyzed with one-way ANOVA and Tamhane’s T2. The mean SBS value of NC was significantly lower than others ( p < 0.05 ), and HF was significantly higher than others ( p < 0.05 ). However, PC, PO, IV, NA, and RC were not significantly different from each other ( p > 0.05 ). The mode of failure was mostly adhesive failure in every group. The surface showed similar amount of elements in every group. Conclusions. The SBS of LDS was reduced by saliva and silicone disclosing medium contamination which can be restored using acid- and alkaline-based surface cleansing agents before the cementation procedure.

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COMPARATIVE EVALUATION OF THE SHEAR BOND STRENGTH OF THREE SELF-ETCH DENTIN BONDING AGENTS TO DENTIN: AN IN-VITRO STUDY

International Journal of Advanced Research ◽

10.21474/ijar01/11872 ◽

2020 ◽

Vol 8 (10) ◽

pp. 454-459

Author(s):

Bhalla V. ◽

◽

K. Goud M. ◽

Chockattu S. ◽

Khera A ◽

...

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Resin Composite ◽

Testing Machine ◽

Group Analysis ◽

In Vitro Study ◽

Bonding Agents ◽

Mandibular Molar ◽

Self Etch

Background:Dentin bonding is an ever-evolving field in adhesive dentistry. With the introduction of newer systems into the market, there is a crucial need to test their efficiency in terms of bond strength. Dual-cured adhesives in theory may provide for a better degree of conversion as compared to conventional light-cured adhesives .Thus, the aim of this study was to compare the shear bond strength of three different self-etch adhesives namely ClearfilSE bond (Kuraray), Tetric N Bond Universal (IvoclarVivadent) and Futura Bond DC (Voco) to dentin. Materials & Methods: Ninety extracted non-carious, intact human mandibular molar teeth were selected for this study. Each tooth was decoronated using a double-sided diamond disc with water coolant to a depth of 2mm from the cusp tip .The cut dentin surface was then abraded against 600-grit wet silicon carbide papers for 60 seconds to produce a uniform smear layer. The root portion of each tooth was mounted on a plastic ring using cold cure acrylic resin. Specimens were then divided into three adhesive groups of 30 teeth each, Group A: ClearfilSE Bond (Kuraray), Group B: Tetric N Bond Universal (IvoclarVivadent), Group C :Futura Bond DC (Voco). All bonding agents were used according to the manufacturers’ instructions, in combination with the resin composite Tetric N Ceram (IvoclarVivadent). The samples were thermocycled, followed by shear bond strength testing using a Universal testing machine (Hounsfield). Data were subjected to statistical analysis using one-way analysis of variance (ANOVA) (P<0.05) and Post hoc Tukey’s test for inter- and intra- group analysis respectively. Results: Clearfil SE Bond yielded the highest shear bond strength values (30.9 ±4.66 MPa) which were statistically significant, followed byTetric N Bond Universal group (29.8 ±4.34) and the lowest shear bond strength values were recorded for Futura Bond DC (18.2 ±3.13). Conclusion: Clearfil SE bond and Tetric N bond Universal can be considered as better options than Futura Bond DC.

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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

Open Access Macedonian Journal of Medical Sciences ◽

10.3889/oamjms.2019.579 ◽

2019 ◽

Vol 7 (13) ◽

pp. 2162-2166 ◽

Cited By ~ 1

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.

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Evaluation of the effect of collagen stabilizing agents like chitosan and proanthocyanidin on the shear bond strength to dentin and microleakage of resin composite at enamel and cemental walls: An in vitro study

Journal of Conservative Dentistry ◽

10.4103/jcd.jcd_195_20 ◽

2019 ◽

Vol 22 (5) ◽

pp. 483

Author(s):

Suresh Mitthra ◽

Lukram Nivedita ◽

Venkatachalam Prakash ◽

NewbeginSelvakumar Gold Pearlin Mary ◽

Alagarsamy Venkatesh ◽

...

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Resin Composite ◽

In Vitro Study ◽

Vitro Study ◽

Stabilizing Agents

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Comparative evaluation of shear bond strength of composite to dentin in presence of different dental liners: An in-vitro study

10.21203/rs.3.rs-909993/v3 ◽

2021 ◽

Author(s):

Ladan Ranjbar Omrani ◽

Saba Tohidkhah ◽

Elham Ahmadi ◽

Mahdi Abbasi ◽

Reza Morvaridi Farimani

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Resin Composite ◽

Testing Machine ◽

Glass Ionomer Cement ◽

In Vitro Study ◽

Control Group ◽

The One ◽

Post Hoc

Abstract Background: The aim of the current study was to evaluate and compare the influence of Dycal, Lime-lite, Theracal LC, Biodentine, Resin-modified glass ionomer cement (RMGIC), and Activa Bioactive as the pulp capping material on the shear bond strength of resin composite to dentin.Methods: A total of 70 extracted caries-free molars were randomly assigned to seven groups. Six test groups were covered with various protective liners: Dycal (GD), Theracal LC (GT), lime-lite (GL), Activa Bioactive (GA), Biodentine (GB), RMGIC (GR). The control group (GC)received no liner pretreatment. Each sample was bonded to resin composite using the total-etch tetric N bond adhesive. The samples were then tested for shear bond strength using the universal testing machine at a cross-head speed of 1 mm/min until bond failure occurred. The data were analyzed using the one-way ANOVA test followed by the Tamhane post-hoc test for pairwise comparisons of the groupsResults: Independent of the type of the applied liner, all groups exhibited inferior SBS to dentine compared to the control group. GT and GR showed significantly higher shear bond strength than GB and GD, which showed the lowest shear bond strength. GL and GA also had significantly lower SBS results than GT. The mode of fracture was predominantly cohesive in GD, GB, and GT and adhesive in GA.Conclusion: This present study concludes that the bond strength of resin-composite to dentine can be affected differently using various types of liners.

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Shear Bond Strength of the Amalgam-Resin Composite Interface

Operative Dentistry ◽

10.2341/06-100 ◽

2007 ◽

Vol 32 (4) ◽

pp. 341-346 ◽

Cited By ~ 5

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.

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