Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"Sealer"”.
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Effect of Final Irrigation on Sealer-Dentin Interface for a Methacrylate-Based Resin Sealer
… (middle or apical) on the quality of the sealer-dentin interface with a methacrylate-based sealer. Following endodontic instrumentation of extracted incisors the specimens were treated with varied techniques based on one of four study groups. The specimens were either treated with NaOCl or …
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Durability of Silane Sealer in a Highly Alkaline Environment
… mitigate ASR expansion is to use a penetrating sealer such as silane. A set of columns located in a food preparation facility was treated with silane and a complimentary laboratory study was performed. A cleaning regimen involving application of an alkaline cleaner is employed at the facility, …
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Evaluation of microleakage of RSA Roekoseal Automix root canal sealer
… ability of RSA Roekoseal Automix root canal sealer using ThermaFil Plus and cold lateral condensation was compared to Roth's 801 root canal sealer. Fifty-two single canaled roots of extracted teeth were divided into four groups of twelve and instrumented to size 6 with .06 taper series 29 …
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Mutagenicity of root canal sealer RSA Roekoseal Automix in the Ames test
The mutagenic activities of the root canal sealers, RSA Roekoseal Automix and AHPIus, were tested in the bacterial gene mutation assay (Ames test). Both materials were tested immediately after mixing and after setting 24 h. The Salmonella typhimurium tester strains TA98 and TA 100 were used to …
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Retreatability of root canals obturated using a bioceramic sealer and gutta percha
… of problem: Although bioceramic endodontic sealer cements offer various advantages over conventional zinc oxide-based and resin-based cements, questions have been raised about the ability to retreat root canals that have been sealed using these cements. Aims and Objectives: The aim of the …
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ASSESSMENT OF ANTIBACTERIAL EFFECT AND FLOWABILITY OF BIOCERAMIC SEALER MODIFIED WITH BaTiO3 NANOPARTICLES
… aim of this project is to develop an endodontic sealer embedded with piezoelectric fillers for the prevention of root canal infections. Materials and methods: BaTiO3 particles were mixed with EndoSequence (BC) sealer in two concentrations (5% and 10%wt). Flowability test was conducted for each …
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Influence of Silane Penetrating Sealer on Deicer Scaling and Absorption of Concrete Highway Pavement
Concrete pavements generally show excellent performance; however, some have shown premature joint degradation at young age in recent years. There are many causes of premature deterioration including poor mix designs, reaction with deicers, and to fluid absorption. This study discusses the scaling …
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Effect of the GentleWave System on dentin microhardness and sealer penetration: an in vitro study
… GentleWave (GW) System on dentin hardness and sealer penetration in root canal treatment, aiming to assess its potential advantages over conventional techniques. Conventional instrumentation can alter root canal anatomy, necessitating irrigation methods that minimize mechanical impact. The GW …
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Bond strength of calcium silicate based bioceramic sealers to dentin
… this study was to compare available bioceramic sealers and resin based sealer on their push out and shear bond strength. MATERIALS AND METHODS: Three calcium silicate based bioceramic sealers: Endosequence BC sealer (Brasseler), BioRoot RCS (Septodont) and Edge Bioceramic Sealer (EdgeEndo) and …
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Designing of a prototype heat-sealer to manufacture solar water sterilization pouches for use in developing nations
Water purification proves to be a difficult task in many developing nations. The SODIS (SOlar water DISinfection) process is a method which improves the microbiological quality of water making it safer for drinking and cooking using the UV-A rays and heat from the sun. Even simple processes such as …
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Physical and Biologic Properties of Calcium Silicate Endodontic Sealers
… microhardness, and solubility of Endosequence BC Sealer, BioRoot RCS, NeoSEALER Flo, and BIO-C SEALER. MATERIALS AND METHODS: Nuclei counting assay and MTT assay were used to determine the cytotoxicity of the sealers at dilutions of 1:1, 1:4, and 1:32 and at 24 hours, 72 hours, and 1 week. Vickers …
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pH Change Following Smear Layer Removal and Final Rinse with 95% Ethyl Alcohol Using Calcium Hydroxide Medicament or BC Sealer
… XS, Calasept Plus, or obturation with BC sealer. Methods: 80 single rooted extracted human teeth were decoronated with a standardized root length of 15mm. All root were instrumented to size F4 using the ProTaper Gold file system. Defects were made on the facial and lingual root surfaces to …
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Mechanical Agitation Effects on Physical Properties of Calcium-Silicate-Cement Sealers
Endodontic sealers are crucial to achieving a fluid-tight seal within the intricacies of root canal systems. While these sealers have been available in hand-mixed or syringe-mixed formulations, there is now a surge in pre-mixed Calcium-Silicate-Cement (Bioceramic) Sealers. Requirements for sealers …
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A laboratory study of the adhesion of a restorative acrylic resin and a polycarboxylate cement on bovine enamel etched with fifty per cent phosphoric acid
… of the restorative resin, and that the cavity sealer supplied by the manufacturer further improved the resin attachment to enamel surfaces previously etched with phosphoric acid. The bonding of the resin to acid-etched enamel surfaces pretreated with or without the cavity sealer was unaffected …
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Influência do cimento obturador no tempo de contaminação microbiana de canais radiculares obturados e expostos ao meio bucal - estudo in vitro
… gutta-percha associada aos cimentos endodônticos Sealer 26® e AH-PlusTM e sua influência no tempo de contaminação bacteriana e fúngica em canais radiculares expostos ao meio bucal. Foram utilizados quarenta pré-molares inferiores com 21mm de comprimento em processo de rizogênese completo. Os …
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Ultrasonic Sealing of Aluminum Foil Based Laminate Food Packaging Materials
… Both continuous and stationary ultrasonic sealers were involved in creating strong seals combined with knurled or smooth surface anvils. Two ultrasonic frequencies were investigated, with 40-kHz in addition to the industry standard frequency 20-kHz to broaden the scope of research. Although …
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Identifying Damage, Predicting Expansion, and Determining the Effectiveness of Sealers on Concrete Affected by Alkali-Silica Reaction and Freeze-Thaw
… and mitigation of freeze-thaw and ASR with sealers testing and results are contained herein. PFET results indicated that the pavement will not continue to expand from ASR. With other interstate pavements deteriorating prematurely throughout Arkansas, DRI has shown that most are damaged not …
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The determination of the operating characteristics of an 18- inch stoneware gas absorption tower
… characteristics of the tower. A new gas sealer was designed and constructed using a spiral cooling unit made from 5-inch stove pipe elbows. The elbows were coated with silicone resin in an effort to reduce corrosion. The capacity of this unit was approximately 50% greater than the …
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The Economy of Preventive Maintenance of Concrete Bridges Due to Corrosion
… preventive maintenance measures, such as surface sealers and overlays. The chloride profiles derived from the FEA model was then used as an indicator to select appropriate preventive maintenance measures at the right time based on the chloride concentration at the surface of the steel. A …
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