scholarly journals Comparative evaluation of bond strength of three self-adhering flowable composites to sound and demineralized enamel – An in vitro study

2021 ◽  
Vol 4 ◽  
pp. 3-7
Author(s):  
Shrikanth Benjwal ◽  
Mousumi Goswami ◽  
Aditya Saxena ◽  
Reenu Sarah Kurien ◽  
Anam Mushtaq
Keyword(s):  
Bond Strength ◽  
Primary Teeth ◽  
Fracture Pattern ◽  
Adhesive Fracture ◽  
Demineralized Enamel ◽  
Significant Difference ◽  
Group A ◽  
Mixed Fracture ◽  
Group B ◽  
Flowable Composites

Objectives: The purpose of this study was to determine bond strength of three self-adhering flowable composites. Materials and Methods: Mean tensile bond strength was measured in three groups – Group A – Constic, Group B – Dyad Flow, and Group C – Fusio Liquid Dentin on sound and demineralized primary teeth. Fracture pattern was studied using a stereomicroscope for each sample and in classified as adhesive, cohesive, or mixed fracture. Results: Mean tensile bond strength in sound enamel of Group A (Constic) was found to be 10.79 + 4.24, Group B (Dyad Flow) was 10.30 + 4.63, and of Group C (Fusio Liquid Dentine) was 11.87 + 4.45. No significant difference was found between the three groups (f = 0.327 and P = 0.724). However, a significant difference was found with demineralized enamel in three groups. Constic and Dyad Flow exhibited adhesive fracture pattern in majority of samples on sound enamel, whereas Fusio Liquid Dentin had mixed fracture pattern. On demineralized enamel, Constic exhibited adhesive fracture pattern majorly, whereas Dyad flow demonstrated mixed pattern and Fusio Liquid Dentin had more of cohesive fractures. Conclusion: Constic, Dyad Flow, and Fusio Liquid Dentin can be used instead of conventional pit and fissure sealants or in small occlusal cavities in primary teeth as a single step material.

scholarly journals Bond Strength of Self-Adhesive Flowable Composites and Glass Ionomer Cements to Primary Teeth: A Systematic Review and Meta-Analysis of In Vitro Studies

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6694
Author(s):  
Flavia Iaculli ◽  
Alessandro Salucci ◽  
Gianni Di Giorgio ◽  
Valeria Luzzi ◽  
Gaetano Ierardo ◽  
...  
Keyword(s):  
Systematic Review ◽  
Bond Strength ◽  
Primary Teeth ◽  
Meta Analysis ◽  
Deciduous Teeth ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Significant Difference ◽  
Flowable Composites

Background: Conventional composites are largely used in pediatric restorative dentistry and demonstrate successful clinical outcomes. However, the need for simplification of operative steps in young or uncooperative children demands reliable alternatives. Therefore, the aim of the present systematic review and meta-analysis was to evaluate the in vitro bond strength of glass ionomer cements (GICs) and self-adhesive flowable composites (SFCs) on deciduous teeth. Methods: A comprehensive literature search according to the PRISMA checklist was manually and electronically performed by two independent reviewers through the following databases: MEDLINE/PubMed, Google Scholar, Scopus, and Embase, to include in vitro studies comparing GICs and SFCs bond strength values of restorations on primary teeth. In addition, three groups of meta-analyses were conducted using random-effects models. Results: Three articles meeting the inclusion criteria were selected and subjected to both qualitative and quantitative assessment. No statistically significant difference was found between SFC versus GIC; however, both groups significantly differed with conventional flowable composites (CFs). Conclusions: Despite the absence of significant difference in bond strength values, SFCs may be considered a valid alternative to GICs in the restoration of deciduous teeth, although CFs proved better in vitro performances.

scholarly journals Influence of irrigating agents on fiber postpush-out bond strength to radicular dentin sections with the different adhesive system

2017 ◽  
Vol 11 (03) ◽  
pp. 380-384 ◽  
Author(s):  
Satheesh B. Haralur ◽  
Asim Nasser A. Alasabi ◽  
Sultan A. Abohathrah Al Qahtani ◽  
Saeed Musleh S. Alqahtani
Keyword(s):  
Bond Strength ◽  
Ethylenediaminetetraacetic Acid ◽  
Adhesive System ◽  
Negative Influence ◽  
Significant Difference ◽  
Group A ◽  
Coronal Section ◽  
Group B ◽  
Self Etch ◽  
Push Out

ABSTRACT Objective: The objective of this study is to evaluate the effect of irrigating agents on push-out bond strength of resin postcemented with various adhesive systems at different radicular dentin sections. Materials and Methods:Sixty single-rooted premolar teeth were root canal treated, subsequently decorated at cementoenamel junction. The endodontic postspace was irrigated with 5.25% sodium hypochlorite (NaOCl) and 17% ethylenediaminetetraacetic acid (EDTA) for Group A (n = 30) and Group B (n = 30), respectively. The sample from each group was subdivided into three groups (10) according to luting protocol of etch-wash, self-etch, and self-adhesive. Individual teeth with cemented resin postsamples were sectioned into coronal, middle, and apical segments. Subsequently, subjected for pushout bond strength test by applying a load at 0.5 mm/min speed. The data were analyzed by three-way analysis of variance and Tukey comparison test at a significant difference level of 0.05.Results: The coronal section with 5.25% NaOCl irrigation and self-etch luting protocol provided the highest push out strength at 16.282 Mpa. The etch-wash luting protocol in both irrigations showed the lesser bond strength at 8.273 and 8.493 MPa, respectively, in coronal section.Conclusions: The self-etch adhesive system showed better push out bond strength and 17% EDTA had a negative influence on self-etch bond strength. The coronal sections had highest bond strength in comparison with apical radicular dentin sections.

Mineral Content Removal after Papacarie Application in Primary Teeth: A Quantitative Analysis

2010 ◽  
Vol 34 (3) ◽  
pp. 229-231 ◽  
Author(s):  
ST Bittencourt ◽  
JR Pereira ◽  
AW Rosa ◽  
KS Oliveira ◽  
JS Ghizoni ◽  
...  
Keyword(s):  
High Speed ◽  
Mineral Content ◽  
Primary Teeth ◽  
Close Correlation ◽  
Atomic Absorption Spectrophotometry ◽  
Cavity Preparation ◽  
Absorption Spectrophotometry ◽  
Significant Difference ◽  
Group A ◽  
Group B

The aim of this study was to quantify the mineral content removed from primary teeth after using a chemomechanical system, called Papacarie®. Materials: Twenty human primary extracted molars were divided into two groups of 10 specimens each. Group A presented sound molars and Group B decayed molars on the occlusal or occlusal-proximal surface. In Group A, cavities in enamel and dentin with high speed drills were made before treatment. All teeth were treated with Papacárie® following the manufacturer's instructions. Each cavity was filled in with the product, allowing curing for 45 seconds, and then removed with the noncutting edge of the curette. The collected material was sent for laboratory analysis using atomic absorption spectrophotometry technique. Medians for each group were calculated through the application of Mann-Whitney and a statistically significant difference (p <0005) was observed. To verify the quantity of calcium removed from sound tissue, the median of calcium in group A (0.08% Ca) was compared with that of the gold standard (0.04% Ca), which showed a close correlation of values between them. Results indicate that the amount of calcium removed with Papacárie® affects only the carious component of teeth. This goes in accordance with the principles of cavity preparation and follows the current philosophy of preventive dentistry.

scholarly journals The difference between porcelain and composite resin shear bond strength in the administration of 4% and 19.81% silane

2019 ◽  
Vol 52 (1) ◽  
pp. 27
Author(s):  
Ira Widjiastuti ◽  
Dwina Rahmawati Junaedi ◽  
Ruslan Effendy
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Resin Composite ◽  
Repair Process ◽  
Direct Repair ◽  
Significant Difference ◽  
Group A ◽  
The Difference ◽  
Group B

Background: Damage to porcelain restorations such as fractures requires a repair that can be performed either directly or indirectly. Direct repair involves directly performing restoration of fractured porcelain with a composite resin application. This technique has more advantages than indirect repair because it requires no laboratory work and can be completed during a single visit. Silane, on the other hand, has been widely used and is reported to increase porcelain and composite resin attachments during the direct repair process. Purpose: This study aimed to determine the differences in shear bond strength between porcelain and composite resin during the administering of 4% and 19.81% silane. Methods: 27 porcelain samples were divided into three groups, namely: Group A - 4% silane, Group B - 19.81% silane and Group C - no silane, prior to the application of composite resin. Each sample was tested for shear bond strength by means of Autograph and fracture analysis performed through stereomicroscope and scanning electron microscope tests. Data analysis was subsequently performed using an ANOVA test. Results: There was a significant difference between the three groups with p=0.000 (p<0.005). The lowest bond strength was found in the group without silane, while the highest was in the group with 4% silane (p<0.005). Conclusion: The use of 4% silane can produce the highest shear bond strength of porcelain and resin composite.

scholarly journals Evaluation of crosshead speed influence on shear bond strength test

2014 ◽  
Vol 17 (3) ◽  
pp. 50
Author(s):  
Celina Wanderley de Abreu ◽  
Gilberto Duarte Filho ◽  
Alberto Noriyuki Kojima ◽  
Renato Morales Jóias ◽  
Alfredo Mikail Melo Mesquita
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Font Size ◽  
Universal Testing ◽  
Significant Difference ◽  
Group A ◽  
The Mean ◽  
Group B ◽  
Group D

<p><span style="font-size: medium;">The objective of this study was to evaluate the influence of different speeds using the piston device in the shear bond strength. 48 cylinders of composed resin had been confectioned (Solidex),and were divided randomly in four groups (n=12).</span><span style="font-size: medium;">  </span><span style="font-size: medium;">The specimens were adapted to the device for the</span><span style="font-size: medium;">  </span><span style="font-size: medium;">shear bond strenth test and were taken to an universal testing machine with a load cell of 1000Kg. The test were carried through with four different speeds: group A: 0,5; group B: 1,0; group C: 1,5 and group D: 2,0mm/min. The mean and standard deviations, in Kgf, were: A - 66,31(10,24); B - 64,53 (20,40); C - 75,23 (11,84) and D - 66,62 (13,81). The data were submitted to ANOVA (p=0,13). The results indicated that it did not have statistical significant difference between the groups</span><span style="font-size: medium;">   </span><span style="font-size: medium;">A, B, C and D concluding that the speed in this type of test, with this device, can be varied without modify results.</span></p>

scholarly journals Ceramometal Bond Strength Analysis using New and Recast Nonprecious Alloys with Three Different Ceramics

2013 ◽  
Vol 3 (1) ◽  
pp. 14-20
Author(s):  
Sulekha Gosavi ◽  
Arti Wadkar ◽  
Siddharth Y Gosavi
Keyword(s):  
Bond Strength ◽  
Ceramic Material ◽  
Shear Bond Strength ◽  
Alloy System ◽  
Ceramic Materials ◽  
Strength Analysis ◽  
Significant Difference ◽  
Group A ◽  
Group B

ABSTRACT Objectives This study is undertaken to evaluate the dependence of bond strength of 100% fresh nonprecious alloy and the combination of 50% recast (used) alloy and 50% fresh alloy with three different veneering ceramic material. Materials and methods To evaluate the shear bond strength between new and recast alloy nonprecious Ni-Cr alloy (System KN®, Adentatec, Germany) was used with three different commercially available ceramics. A total of 60 samples were prepared and divided in two groups depending on the new or recast alloy. The 30 specimens of new alloy (group A) and 30 specimens of recast alloy (group B) were fabricated. Each group was again divided into three subgroups of 10 specimens for ceramic veneering Vita VMK-95 [V], IPS Classic [I] and Noritake [N] as veneering ceramic materials. Thus, six subgroups were formed as groups AV, AI, AN, BV, BI and BN. Groups AV and BV were veneered with Vita Ceramics, Groups AI and BI were veneered with IPS Classic (Ivoclar) and Groups AN and BN were veneered with Noritake. Then, shear bond strength between new and recast alloy was analyzed for each type of ceramics using MTS machine. Results The bond strength between new [group A] and recast alloy [group B] using three different veneering ceramics were evaluated. It was found that the new or the fresh alloy had highest shear bond strength than the recast alloy. Statistically, it was found that there was significant difference in bond strength between the new and recast alloys, when same type of ceramics was compared. When comparing ceramics, the Noritake group had highest bond strength, while other groups, that is, Vita and Ivoclar had comparatively low bond strength. Conclusion From this study, conclusion can be drawn that the use of 50% recast alloy shows reduction in bond strength values. Therefore, the use of recast alloy should not exceed more than 50%, as it would compromise the properties of alloy and the efficacy of bond strength between ceramic and alloy. How to cite this article Gosavi S, Wadkar A, Gosavi SY. Ceramometal Bond Strength Analysis using New and Recast Nonprecious Alloys with Three Different Ceramics. Int J Prosthodont Restor Dent 2013;3(1):14-20.

scholarly journals SHEAR BOND STRENGTH OF RESTORATIVE PARTICULATE RESIN COMPOSITE WITH A SHORT FIBER-REINFORCED RESIN COMPOSITE SUBSTRUCTURE

2018 ◽  
Vol 9 ◽  
pp. 155
Author(s):  
Ellyza Herda ◽  
Nabila . ◽  
Bambang Irawan
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
Testing Machine ◽  
Short Fiber ◽  
Resin Composites ◽  
Fiber Reinforced ◽  
Significant Difference ◽  
Group A ◽  
Group B

Objective: This study aimed to identify the shear bond strength of two different restorative particulate resin composites with a short fiber-reinforced resin composite (SFRC) substructure.Methods: Two restorative particulate resin composites, G-aenial PosteriorTM (Group A, 10 specimens) and Tetric N-Ceramtm (Group B, 10 specimens), were used as an upper layer of everX posteriorTM, an SFRC. A shear bond strength test was performed using a universal testing machine with a load of 100 kgf and a crosshead speed of 0.5 mm/min. The data were analyzed statistically using the independent samples t-test.Results: The mean shear bond strength values were found to be18.64±1.5 MPa (Group A) and 22.05±1.8 MPa (Group B). A significant difference in shear bond strength between the two groups was found.Conclusion: The shear bond strength value is higher in the Tetric N-CeramTM restorative particulate resin composite with SFRC as a substructure than the G-aenial PosteriorTM restorative particulate resin composite.

DeVega versus ring annuloplasty in severe functional tricuspid insufficiency and their impact on the right ventricle

2019 ◽  
Vol 1 (4) ◽  
pp. 133-139
Author(s):  
Yasser Hamdy ◽  
Mohammed Mahmoud Mostafa ◽  
Ahmed Elminshawy
Keyword(s):  
Right Ventricular ◽  
Tricuspid Valve ◽  
Tricuspid Regurgitation ◽  
Early Postoperative Period ◽  
Tricuspid Valve Repair ◽  
Ring Annuloplasty ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
The Right

Background: Functional tricuspid valve regurgitation secondary to left-sided valve disease is common. DeVega repair is simple, but residual regurgitation with subsequent impairment of the right ventricular function is a concern. This study aims to compare tricuspid valve repair using DeVega vs. ring annuloplasty and their impact on the right ventricle in the early postoperative period and after six months. Methods: This is a prospective cohort study of 51 patients with rheumatic heart disease who underwent tricuspid valve repair for secondary severe tricuspid regurgitation. Patients were divided into two groups: group A; DeVega repair (n=34) and group B; ring annuloplasty repair (n=17). Patients were assessed clinically and by echocardiography before discharge and after six months for the degree of tricuspid regurgitation, right ventricular diameter and tricuspid annular plane systolic excursion (TAPSE). Results: Preoperative echocardiographic assessment showed no difference in left ventricular end-systolic diameter, end-diastolic diameter, ejection fraction and right ventricular diameter, however; group A had significantly better preoperative right ventricular function measured by TAPSE (1.96 ± 0.27 vs1.75 ± 0.31 cm; p=0.02). Group B had significantly longer cardiopulmonary bypass time (127.65 ± 13.56 vs. 111.74 ± 18.74 minutes; p= 0.003) and ischemic time (99.06 ± 11.80 vs. 87.15 ± 16.01 minutes; p= 0.009). Pre-discharge, there was no statistically significant difference in the degree of tricuspid regurgitation, but the right ventricular diameter was significantly lower in group B (2.66 ± 0.41 and 2.40 ± 0.48 cm; p=0.049). After six months of follow up, the degree of tricuspid regurgitation (p= 0.029) and the right ventricular diameter were significantly lower in the ring annuloplasty group (2.56 ± 0.39 and 2.29 ± 0.44 cm; p=0.029). Although there was a statistically significant difference in preoperative TAPSE, this difference disappeared after six months. Conclusion: Both DeVega and ring annuloplasty techniques were effective in the early postoperative period, ring annuloplasty was associated with lesser residual regurgitation and better right ventricular remodeling in severe functional tricuspid regurgitation than DeVega procedure after 6-months of follow up.

Effect of short-term use of oral contraceptive pills on intraocular pressure

2020 ◽  
Vol 35 (3) ◽  
Author(s):  
Tayyaba Gul Malik ◽  
Hina Nadeem ◽  
Eiman Ayesha ◽  
Rabail Alam
Keyword(s):  
Oral Contraceptive ◽  
Childbearing Age ◽  
Short Term ◽  
Oral Contraceptive Pills ◽  
Contraceptive Pills ◽  
Time Period ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Short Time

Objective: To study the effect of short-term use of oral contraceptive pills on intra-ocular pressures of women of childbearing age.   Methods: It was a comparative observational study, conducted at Arif memorial teaching hospital and Allied hospital Faisalabad for a period of six months. Hundred female subjects were divided into two groups of 50 each. Group A, included females, who had been taking oral contraceptive pills (OCP) for more than 6 months and less than 36 months. Group B, included 50 age-matched controls, who had never used OCP. Ophthalmic and systemic history was taken. Careful Slit lamp examination was performed and intraocular pressures (IOP) were measured using Goldman Applanation tonometer. Fundus examination was done to rule out any posterior segment disease. After collection of data, we analyzed and compared the intra ocular pressures between the two groups by using ANOVA in SPSS version 21.   Results: Average duration of using OCP was 14.9 months. There was no significant difference of Cup to Disc ratios between the two groups (p= 0.109). However, significant difference was noted between the IOP of OCP group and controls. (p=0.000). Conclusion: OCP significantly increase IOP even when used for short time period.

Comparative Clinical study of Jatyadi Taila and Jatyadi Ghrita in the management of Dushta Vrana

2018 ◽  
Vol 3 (3) ◽  
Author(s):  
Rajendra Joshi ◽  
N. B. Mashetti ◽  
Rakesh Kumar Gujar
Keyword(s):  
Clinical Study ◽  
Burning Sensation ◽  
Normal Process ◽  
Surgical Practice ◽  
Local Factors ◽  
Significant Difference ◽  
Comparative Clinical Study ◽  
Group A ◽  
Contaminated Wound ◽  
Group B

Dushta Vrana is a common and frequently encountered problem faced in surgical practice. The presence of Dushta Vrana worsens the condition of the patient with different complications and may become fatal. Local factors on wound like slough, infection and foreign body, affect the normal process of healing. A healthy wound in a normal body heals earlier with a minimum scar as compared to a contaminated wound. Therefore in this study all the efforts are made to make a Dushta Vrana into a Shuddha Vrana. Once the Vrana becomes Shuddha, Ropana of the Vrana will start. The objective of the study was to evaluate the clinical efficacy of Jatyadi Taila and Jatyadi Ghrita in Dushta Vrana. Clinically diagnosed 60 Patients of Dushta Vrana were randomly divided into two groups, each consisting of 30 Patients. Group A were treated with the Jatyadi Taila and Group B was treated by Jatyadi Ghrita. The results observed was based on the relief obtained on the subjective and objective parameters taken for consideration for this study viz, size of ulcer, discharge, smell, pain, burning sensation, itching and granulation were found significant (P Lass Than 0.05). On the basis of assessment criteria and overall result of treatment, the patients of Jatyadi Taila group showed better results when compared to Jatyadi Ghrita group. Even though statistically there is no much significant difference between the two groups, but by seeing the effect on individual parameters (subjective and objective) and over all response, Jatyadi Taila seems to be effective when compared to Jatyadi Ghrita. It is having more Ropana qualities when compared to Shodhana.

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