Related Papers
Egyptian Dental Journal
Addition of bioactive glass to endodontic epoxy resin sealer: Effect on bioactivity, flow and push-out bond strength
Rania Ahmed Helmy Salama
Comparative evaluation of push-out bond strength of resin based endodontic sealer in fluorosed and non fluorosed teeth- An in vitro study
IOSR Journals
Aim: To evaluate the push-out bond strength of resin based endodontic sealer in fluorosed and non fluorosed teeth. Materials and Methods: Twenty extracted single rooted permanent teeth (Ten teeth affected with Fluorosis and Ten teeth not affected with Fluorosis) were collected. Access opening was done, pulp tissue was extirpated, working length was determined with 15 size K file, cleaning and shaping was done up to Protaper F3 under copious irrigation. The samples were divided into two groups each containing ten specimens (Group1-Teeth affected with Fluorosis and Group 2-Teeth not affected with Fluorosis). Obturation was done using single cone gutta percha coated with AH plus sealer, the access cavity was sealed with Cavit and was incubated at 37˚C at 100 % relative humidity for 2 weeks. After 2 weeks the samples were sectioned into three slices. The push-out bond strength of each specimen was calculated using Universal Testing Machine. The data obtained was statistically analyzed using One-way analysis of variance (ANOVA) and Student t-test. Results: There was significant difference between the bond strength of teeth that were not affected with Fluorosis and the teeth affected with fluorosis. The bond strength of the teeth that was not affected with Fluorosis was higher as compared to the fluorosed teeth. Conclusion: Push out bond strength values of AH Plus sealer were different in fluorosed and non fluorosed teeth and varied significantly in the Coronal, Middle and Apical third of the root canal.
European Archives of Paediatric Dentistry
Fluoride release and recharging ability of new dental sealants
2015 •
Dimitrios Dionysopoulos
Pediatric dentistry
Formulation and characterization of antibacterial fluoride-releasing sealants
adina duse
The purpose of this study was to formulate and characterize experimental antibacterial fluoride-releasing sealants and compare them with commercial sealants for fluoride release, recharge, adhesion, and microleakage. Two experimental sealants (Exp-1, Exp-2) containing a synthesized antibacterial fluoride-releasing monomer and fluoride-releasing filler were formulated. Exp-2 also contained NovaMin nanoparticles. Commercial sealants Clinpro (CL) FluroShield (FS), and SeLECT Defense (E34) were also included. Fluoride release from disk samples in deionized water was measured daily using an ion-selective electrode for 14 days, and after recharging with Neutra-Foam (2.0% sodium fluoride), fluoride was measured for 5 days. Microtensile bonding strengths (MTBS) to enamel were tested after 24-hour storage in water at 37°C or thermocycling 5-55°C for 1,000 cycles. A microleakage test was conducted on extracted teeth using a dye-penetration method. The data were analyzed using analysis of vari...
EUROPEAN ENDODONTIC JOURNAL Research article volume: 6: 98-109
The Structural, Physical, and In Vitro Biological Performance of Freshly Mixed and Set Endodontic Sealers
2021 •
Afsheen Mansoor
Objective: The objective of this study was to evaluate the in vitro performance of endodontic sealers in their freshly mixed and set forms. Methods: The commercially used endodontic sealers (AH Plus, Dia-ProSeal, GuttaFlow 2, and Pulpdent Root Canal Sealer) were investigated and the chemical structure of freshly mixed and set sealers were assessed with Fourier transform infrared spectroscopy (FTIR). The surface morphology and elemental analysis were assessed with a scanning electron microscope (SEM) equipped with energy-dispersive X-ray spectroscopy. The pH and solubility analysis were performed and the cytotoxicity was done on extracts of freshly mixed and set materials using Alamar blue assay. One way ANOVA and Post Hoc Tukey analysis was used to do multiple comparison analysis of the mean values and standard deviation results through SPSS version 20 (IBM Software, NY, USA) for pH, solubility, and cytotoxicity analysis. Results: FTIR analysis revealed the structural pattern and the difference in freshly mixed and set samples was observed with the change in intensities of the peaks. The morphological pattern revealed the presence of micro/nano-particles with pores distributed throughout their structure. The sealer with the least solubility was AH Plus (0.10±0.01) followed by Dia-ProSeal (0.77±0.25), GuttaFlow 2 (1.88±0.82) and Pulpdent Root Canal Sealer (3.03±0.18). The solubility of AH plus was significantly lower (P<0.05) in comparison to GuttaFlow 2 and Pulpdent Root Canal Sealer. The highest pH (10.09±0.034) in the freshly mixed state and highest cytotoxicity in the freshly mixed (70.08±5.852) and set sealers (83.87±5.409) (P<0.05) at day 7 was observed in Dia-ProSeal. GuttaFlow 2 was the most biocompatible sealer in the set state and AH Plus was the most biocompatible sealer in the freshly mixed state at day 7. Conclusion: Clinically, the sealer is applied in fresh state, whereby this study signifies that which material is more biocompatible in fresh state and provides insight information to clinicians. AH Plus showed least solubility and cytocompatibility in fresh state compared to other groups. Keywords: Endodontic sealers, cytotoxicity, morphology, pH, solubility
MATERIALE PLASTICE
Push - Out bond strengths of three different endodontic sealers a comparative study
Matei Chisnoiu
IOSR Journals
"Comparative Evaluation of Push out Bond Strength of Different Endodontic Sealers: An In Vitro Study."
2019 •
IOSR Journals
Aim: To compare the bond strength of four different endodontic sealers to root dentin through push-out test design.Materials and Methods: Forty single-rooted teeth with completely formed apices were selected. Teeth were decoronated, and working length was determined. Instrumentation and irrigation were performed. The teeth were divided into four groups based upon the sealer used. Group 1: Bioceramic sealer (BioRoot TM RCS), Group 2: Mineral trioxide aggregate (MTA) based sealer (MTA Fill apex), Group 3: Epoxy resin based sealer (AH Plus Sealer), and Group 4: Calcium Hydroxide based sealer(Sealapex) Manipulation and application of the sealer was done as per the manufacturer instructions. All the teeth were obturated using 6% gutta-percha. After obturation, each tooth was prepared for push-out test with root slices of 2 mm thickness using universal testing machine. Results: The highest bond strength was found in Group 1 (BioRoot TM RCS) (P < 0.05) compared to other groups. The lowest bond strength was found in Group 2 (MTA Fill apex). Statistical analysis is done by two-way ANOVA and Newman-Keuls multiple post hoc. Conclusion: The push-out bond strength of Bioceramic sealer was highest followed by resin-based sealer and lowest bond strength was observed in MTA-based sealer.
BMC Oral Health
The effect of fluoride iontophoresis on seal ability of self-etch adhesive in human dentin in vitro
2022 •
Parintorn Wallanon
Background Fluoride iontophoresis (FI) is a non-invasive method for the transfer of fluoride ions under electrical pressure into dental hard tissue. This study aimed to determine the effect of FI on the seal ability of self-etch adhesive in human dentin using dentin permeability test and scanning electron microscopy (SEM). Methods The experiments were divided into 2 series: series 1 was performed on 28 extracted intact third molars and series 2 was performed on 28 extracted carious third molars (ICDAS 4 and 5). In each series, 20 teeth were used for dentin permeability test and 8 teeth were used for SEM study. For dentin permeability test, the specimens were divided into dentin without FI (control) and dentin with FI (experimental) subgroups. Hydraulic conductance (HD) of dentin was measured before and after adhesive treatment, and calculated for the percentage decrease of HD in each subgroup. Two-way ANOVA and Tukey test were used for statistical analysis. SEM study was used to ass...
Dental Materials Journal
Fluoride release and recharge abilities of contemporary fluoride-containing restorative materials and dental adhesives
2013 •
Dimitrios Dionysopoulos
Dental Materials
Fluoride-containing adhesive: Durability on dentin bonding
2009 •
Mário Góes, Vinícius Hipólito
