scholarly journals Resin-Based Cement Applied to Enamel and Dentin Pre-Treated with Phytic Acid: An In Vitro Study

2021 ◽  
Vol 11 (24) ◽  
pp. 11976
Author(s):  
Mohannad Nassar ◽  
Md. Sofiqul Islam ◽  
Smriti Aryal A C ◽  
Hatem Mostafa El-Damanhoury ◽  
Salvatore Sauro ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Citric Acid ◽  
Scanning Electron Microscope ◽  
Phytic Acid ◽  
In Vitro Study ◽  
Smear Layer ◽  
Suitable Alternative ◽  
Tooth Structure ◽  
Scanning Electron

Phytic acid (IP6) has the ability to etch tooth structure due to its acidity and chelating properties. This study aimed to evaluate the micro-tensile bond strength (μTBS) of resin-based cement to enamel and dentin using manufacturer-provided etchants, phosphoric acid (PA) for enamel and a mixture of 10% citric acid and 3% ferric chloride (CAF) for dentin and compare them to IP6. Enamel surfaces were etched for 30 s with either PA or IP6 (1%, 5% or 10%). Dentin surfaces were etched for 15 s with either CAF or 1% IP6. Pre-polymerized composite blocks were bonded to enamel and dentin surfaces. After 24 h, the specimens were sectioned into beams and subjected to μTBS testing. De-bonded specimens and smear layer removal were analyzed with a scanning electron microscope. Etching enamel with 1% and 5% IP6 resulted in μTBS values that are comparable to the control (PA) (p > 0.05), while 10% IP6 negatively affected the μTBS (p < 0.05). The μTBS to dentin etched with 1% IP6 was higher compared to the control (CAF) (p = 0.001). IP6 effectively removed enamel and dentin smear layer, and at specific concentrations, it may be a suitable alternative conditioner agent for bonding resin-based cement to enamel and dentin.

scholarly journals An in vitro Study to Compare the Effectiveness of F-file with Ultrasonically Activated K-file to Remove Smear Layer by using a Scanning Electron Microscope

2013 ◽  
Vol 14 (5) ◽  
pp. 825-829 ◽  
Author(s):  
B Shiva Kumar ◽  
Suresh Shenvi
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
In Vitro Study ◽  
Smear Layer ◽  
Setup Cost ◽  
Chi Square ◽  
Layer Removal ◽  
Significant Difference ◽  
Scanning Electron

ABSTRACT Aim The aim of this study was to compare the effectiveness of the F-file with an ultrasonically activated #15 K-file in removing the smear layer after biomechanical instrumentation along with irrigation of Saline, NaOCl and with or without a flush of EDTA. Materials and methods Sixty decoronated human premolar teeth with a single canal were instrumented with ProTaper using S1, S2 and F1 series to produce the smear layer and randomly divided into two groups. Group A used Ultrasonics and group B used F-file for activation of irrigants respectively. Each group was further divided in to three subgroups consisting of 10 teeth in each as I, II, III consisting of saline, NaOCl, NaOCl and EDTA as irrigants respectively. SEM micrographs were taken and amount of smear layer removal was analyzed by using Chi-square statistics tests. Results Most effective smear layer removal was seen only when EDTA was used. There was no statistically significant difference between the groups A and B in removal of smear layer. Conclusion There was no increase in smear layer between use of F-file when compared with the Ultrasonically activated K-file. Clinical significance The F-file although does not have a superior efficacy than the ultrasonics in removal of smear layer from root canals but when used along with EDTA, can be an effective alternative for the dentists who are unable to bear the initial setup cost of ultrasonics. How to cite this article Shenvi S, Kumar BS. An in vitro Study to Compare the Effectiveness of F-file with Ultrasonically Activated K-file to Remove Smear Layer by using a Scanning Electron Microscope. J Contemp Dent Pract 2013;14(5):825-829.

scholarly journals EFFICACY OF NOVEL ROOT CANAL IRRTIGANT-MTAD AGAINST ROOT BIOMODIFIERS ON PERIODONTALLY INVOVLED TEETH IN PERIODONTAL REGENRATION- AN IN VITRO SCANNING ELECTRON MICROSCOPY STUDY.

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Dasarapu Srujan ◽  
Gaurav Malhotra ◽  
Pradeep Shukla ◽  
Prerna Kataria ◽  
Mona Dagar
Keyword(s):  
Electron Microscope ◽  
Citric Acid ◽  
Scanning Electron Microscope ◽  
Ethylenediaminetetraacetic Acid ◽  
Smear Layer ◽  
Human Teeth ◽  
Dentinal Tubules ◽  
Layer Removal ◽  
Scanning Electron

Background: Smear layer removal and collagen fiber exposure may improve regeneration which can be accomplished by use of root biomodifiers. These enhance the degree of connective tissue attachment to denuded roots. The objective of this in vitro study was to evaluate and compare novel root canal irrigant and other root biomodifiers for smear layer removal on periodontally involved human teeth. Materials and Methods: Forty human teeth were collected and stored in saline. After scaling and root planing, two samples were obtained from each tooth. A total of 100 dentin blocks were randomly divided into four groups: Mixture of tetracycline, acid and detergent (MTAD), tetracycline hydrochloride (TTC HCl), citric acid (CA), and ethylenediaminetetraacetic acid (EDTA). The agents were applied for 3 min by active burnishing. Immediately following treatment, the specimens were rinsed, dehydrated, fixed and prepared for scanning electron microscope and were examined at × 3500 magnification. Sampaio’s index was evaluated by the previously trained blind examiner using photomicrographs.  Groups  were  compared  using  analysis  of  variance  followed  by  Tukey’s  post?hoc  test. Results: Mixture of tetracycline, acid, and detergent is most efficacious in removing the smear layer and showed statistically significant dentinal tubules opening, followed by EDTA, TTC HCl, and CA. Conclusion: Mixture of tetracycline, acid and detergent and conventional root biomodifiers used in the study alters the dentin surface by smear layer removal and exposure of dentinal tubules. Hence, MTAD as a root biomodifier may have a significant role in periodontal regeneration. Key words: Citric acid, ethylenediaminetetraacetic acid, MTAD, root biomodifier, scanning electron microscope study, tetracycline hydrochloride

Comparative evaluation of surface roughness and texture of polished nanofill and nanohybrid composites using profilometer and scanning electron microscope: in - vitro study

2017 ◽  
Vol 9 (2) ◽  
pp. 4-10
Author(s):  
Krishna Prasada L ◽  
Jyothsna S Jathanna ◽  
Naveen Kumar ◽  
Ramya M.K ◽  
Elizabeth Issac
Keyword(s):  
Surface Roughness ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Resin Composite ◽  
In Vitro Study ◽  
Average Value ◽  
Three Samples ◽  
Group B ◽  
Scanning Electron

BACKGROUND: To determine the effectiveness of three polishing systems on three different composite materials by evaluating surface roughness using a Profilometer and Scanning electron microscope. METHODOLOGY: A total of Sixty-three resin composite disks were prepared in rectangular acrylic mould of 8×2mm dimension, with 4mm thickness. Specimens were made of light activated resin composite Filtek Z-250-XT, Tetric-N-Ceram bulkfill, Ceram X Duo. The sixty-three samples were divided into three groups of twenty-one samples each i.e. Group A (Filtek Z-250-XT), Group B (TetricN-Ceram bulkfill) and Group C (Ceram-X-Duo).Out of 21 samples of each of the material, 7 specimens were polished with multi enhance polishing agents, 7 specimens were polished with super snap polishing agents and 7 specimens were polished with sof-lexdiscs.Surface roughness of each sample after polishingwasevaluatedusingProfilometer and Scanning electron microscope. RESULTS: One-way anova and kruskalwallis test was used for statistical analysis. Ceram-X-Duo gave least roughness average value with Super snap polishing system when compared to multi enhance and sof-lex polishing system. CONCLUSION: Super snap polishing system is a better polishing system than multi enhance and soflex and Ceram-X-Duo composite material offers better polishability compared to Filtek Z-250-XT and Tetric-N-Ceram bulk fill.

Influence of prophylaxis on the microleakage of sealants: in vitro study

2002 ◽  
Vol 26 (4) ◽  
pp. 371-375 ◽  
Author(s):  
Ana Beatriz Alonso Chevitarese ◽  
Orlando Chevitarese ◽  
Ivete Pomarico Ribeiro de Souza ◽  
Roberto Braga de Carvalho Vianna
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
In Vitro Study ◽  
Optical Microscope ◽  
Vitro Study ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Scanning Electron

The aim of this study was to evaluate the influence of prophylaxis on the sealants microleakage in 30 premolars divided into: Group A, Group B and Group C. The teeth were analyzed using the optical microscope (OM) and at scanning electron microscope (SEM). There was a statitical significant difference among the groups regarding the presence of microleakage, but not with the presence of tags.

Sign in / Sign up

Export Citation Format

Share Document