scholarly journals Tensile Bond Strength of Self-adhesive Flowable Composite as Pit and Fissure Sealant Bonded to the Enamel Surface in Comparison with Fissure Sealants (in vitro study)

2021 ◽  
Vol 21 (1) ◽  
pp. 135-145
Author(s):  
ibrahim Badran ◽  
Saher Sami
Keyword(s):  
Bond Strength ◽  
In Vitro Study ◽  
Vitro Study ◽  
Enamel Surface ◽  
Tensile Bond Strength ◽  
Fissure Sealants ◽  
Fissure Sealant ◽  
Flowable Composite ◽  
Pit And Fissure Sealant

scholarly journals An In vitro Comparative Evaluation of Microleakage of ACP Containing Pit and Fissure Sealant and Moisture Tolerant Pit and Fissure Sealant

2021 ◽  
pp. 274-280
Author(s):  
Rachna Mulani ◽  
Aditi Mathur
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
In Vivo Studies ◽  
Blue Dye ◽  
Fissure Sealants ◽  
Fissure Sealant ◽  
Pit And Fissure Sealants ◽  
Occlusal Surfaces ◽  
Pit And Fissure Sealant

Background: Pits and fissure sealants are widely used to prevent caries in children. Microleakage is one of the most crucial factors resulting in sealant compromise. Factors pertaining to microleakage like, pre-treatment of occlusal surfaces, moisture control, bonding systems, and flowability of the sealant, will determine the longevity of the treatment. In vitro microleakage studies are useful in predicting the marginal sealing ability of pit and fissure sealants. Aim: This in vitro study was undertaken to evaluate and compare the microleakage of ACP (Aegis®) containing pit and fissure sealant and moisture tolerant pit and fissure sealant (EmbraceTM WetbondTM). Study Design: In vitro study. Place and Duration of Study: Department of Pedodontics and Preventive Dentistry, Dr. D.Y. Patil Dental College and Hospital, Pune. between June 2020 and February 2021. Methodology: 26 permanent non- carious premolars extracted for orthodontic treatment were used. The sealants used for the analysis of microleakage were Aegis® and EmbraceTM WetbondTM pit and fissure sealants. The premolars were divided into two groups of 13 each. After sealant application, they were immersed in methylene blue dye. The teeth were subjected to thermocycling for 24 hours, after which The teeth were sectioned buccolingually and dye penetration was studied under a stereomicroscope (magnification 10X). Results: Both the groups were studied and statistically evaluated using Mann- Whitney U test. Aegis® showed higher microleakage in (46.2%) than Embrace (38%), though the results were not statistically significant. Conclusion: Both the materials showed microleakage, more In-vivo studies with longer follow- up periods are needed to evaluate and compare the clinical success of these pit & fissure sealants.

Tensile bond strength of intracanal posts in primary anterior teeth: an in vitro study

2003 ◽  
Vol 27 (1) ◽  
pp. 35-39 ◽  
Author(s):  
Silvia Pithan ◽  
Ricardo de Sousa Vieira ◽  
Marcelo Carvalho Chain
Keyword(s):  
Bond Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Vitro Study ◽  
Tensile Bond Strength ◽  
Anterior Teeth ◽  
Group I

The aim of this study was to measure in vitro; the tensile bond strength of three intracanal posts used in anterior primary teeth. A total of 45 single rooted primary anterior teeth were selected for the study and the crowns sectioned leaving 1mm above the cement-enamel junction. The roots were then assigned to three groups according the type of retention used. All roots were endodonticaly treated, a 4-mm of the canal was cleansed and a base of glass ionomer cement was put at the bottom of the prepared canal. The roots were then prepared to receive intracanal posts using a # 4137 diamond bur (KG Sorensen) used in a depth of 3-mm of the length of the canal. All the prepared roots were acid etched with a 37% phosphoric acid gel for 15 seconds, rinsed, dried and the dentin adhesive Single Bond (3M) was applied. Group I received intracanal posts and cores made of composite resin (Filtek Z 250, 3M). Group II intracanal posts were made from a 0.6mm orthodontic wire bent as a Greek letter type (gamma), fixed with the Z 250 composite resin and cores were built with the same composite. Finally Group III received intracanal retention made of a fiber glass post (Fibrekor Post, Generic/Pentron) with 1.25mm diameter, fixed with Z 250 and cores were made like the other groups. The samples were submitted to tension in a universal- testing machine (Instron, model 4444). Statistical analysis (ANOVA) reveled that there were no statistically significant differences between the groups. On the basis of the results of this in vitro study it was concluded that the type of intracanal post did not interfere with the tensile strength and the most frequent type of failure was of adhesive type, corresponding to 74% of the sample.

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