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 43 for “"Dental materials"”.
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A biophysical analysis of the occlusal wear of dental materials
… environment was used to clinically simulate the dental wear process and surface friction between opposing maxillary and mandibular elements. Measurement of surface friction between occlusal surfaces of natural premolar teeth demonstrated large variation. High viscosity lubricants and surfactant …
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A study of structure-property relationships in certain polymeric dental materials
Acrylic resin artificial teeth may be produced by Transfer or Pseudo compression moulding. Both of these moulding techniques were investigated to formulate the best conditions for use in a mass production environment and evaluated on a commercial basis. It was found that the transfer technique, …
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The effect of microcapsules on dental formulation viscosities
An area of research in dental materials has focused on the development of cariostatic materials. One specific approach has focused on the incorporation of microcapsules that release calcium, phosphate, and fluoride ions. The microcapsules approach provides a slow sustained release of ions which is …
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Flexural Strength of a Pit and Fissure Sealant Containing Microcapsules
Caries at the interface of dental materials and mineralized tooth structure continues to be a significant issue in oral healthcare. A new approach to fight tooth decay incorporates microcapsules into dental materials that release remineralizing agents. The objective of this study was to study the …
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Oral allergy syndrome as a manifestation of food allergy.// Орален алергичен синдром като проява на хранителна алергия
… The relationship between the oral status (dental and hygiene), the use and subsequent sensitization to dental materials and the oral allergic symptoms is also examined. It is defined as weak. A protocol of studies and safety measures is offered concerning work with patients allergic to …
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Post sheer stress flow of flowable composites containing microcapsules
… was studied due to the effort to replace BPA in dental materials. Additionally, these formulations also contained microcapsules capable of releasing bioavailable remineralizing ions. Therefore, there were three main objectives of this study: combine the ideas of using a low stress monomer to …
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Design And Evaluation Of Novel Open-Pore Titanium Foams
Porous titanium (Ti) materials have a variety of applications including hydrogen storage, electrodes, catalysts, catalyst supports, structural sandwich cores, and orthopedic and dental implants. In the present study, novel open-pore titanium foams have been developed using camphene to freeze-cast …
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Development and characterisation of a Portland cement-based dental root filling material
… the undesirably-long setting time of MTA-like dental materials, whilst maintaining the mechanical, biological and sealing properties. 10wt%PoP accelerated initial setting times of grey and white model cements and MTA from >6h to <40min, and did not significantly change compressive strengths and …
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Iatrogenic Complications Due to Prosthetic Treatment with Partial and Complete Acrylic Dentures // Ятрогенни прояви при лечение със снемаеми частични и цели плакови протези
… field, damages to the periodontium and hard dental tissues of the abutment teeth, the most common clinical and laboratory mistakes, as well as the materials used for fabrications acrylic dentures are examined. A set of instructions for precise diagnosis and treatment plan in such cases is …
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Molecular Design of Crosslinked Copolymers
… to the design of novel polymers for restorative dental materials. The computational molecular design of crosslinked polymers using optimization techniques is a new area of research. The first part of this project seeks to develop a novel data structure capable of adequately storing a complete …
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Novel hydrogel copolymers and semi-interpenetraing polymer networks
… lPN's have potential advantages over homogeneous materials presently used in biomedical applications, in that their composite nature gives them a useful combination of properties. Such materials have potential uses in the biomedical field, specifically for use in hard tissue replacements, rigid …
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Bioactive capabilities explored in polyurethane microcapsules and the inclusion into dental sealants and cement pastes
Objectives. Caries at the interface of dental materials and mineralized tooth structure continues to be a significant issue in oral healthcare. The objectives of this study were to demonstrate the effect that microencapsulated water has on charging an orthodontic cement and pit and fissure sealant …
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Biodegradable Polymeric Ion Releasing Fillers Effect on Pit and Fissure Sealant Properties
… following the procedures outlined in ISO4049 for dental materials. Results: At a shear rate of 1 rpm, the colloids containing PIRFs shear thickened as a function of time, exhibiting rheopectic behavior. At the shear rates of 10 or 25rpm, the colloids shear thinned as a function of time, exhibiting …
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The evaluation of the applicability of using gold plating to enhance the predictability and strength of base metal post ceramic gold solder joints when using a flux that does not discolour the porcelain
… for the Master's Diploma in Technology: Dental Technology, Technikon Natal, Durban, South Africa, 1993.
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Tensile Bond Strength of Light-Activated Composite for Bonding Metal and Ceramic Brackets
Visible light-activated composite adhesives offer several advantages over conventional autopolymerizing adhesives such as extended working time, immediate ligation and easier cleanup. This study compared in vitro tensile bond strength and site of failure of a new light-activated adhesive and a …
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Synthesis and characterization of "non-shrinking" nanocomposites for dental applications
… based on SSQ (Polyhedral Silsesquioxane) for dental applications. SSQ based nanocomposites with various types of methacrylate and/or epoxide functionalities were synthesized based on inexpensive starting materials. The 8 synthesized SSQ compounds obtained in high yield were viscous liquids at …
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The design and use of dental articulators in the United States from 1840 to 1970
Gathered from United States Patent records, dental literature and personal communication are many bits of information concerning dental articulator use and design which have been put into this single source. It developes a new classification of dental articulators into eighteen types. This …
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An Analysis of the Fatigue Resistance of Beta Titanium and the Effect of Spot-Welding Upon the Fatigue Resistance of this Alloy
This investigation was designed to establish a fatigue curve for beta titanium, determine the effect of spot-welding upon the fatigue resistance of this alloy, and provide qualitative observations about surface characteristics of different batches of TMA in relation to their fatigue lives. …
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Occlusion of Dentin Tubules by Novel Prophylaxis Paste
… paste treatments are a standard part of biannual dental checkups. Prophylaxis pastes remove stains from teeth by polishing the surface of the enamel. Polishing essentially scratches the surface layer of enamel, thereby technically demineralizing teeth to achieve better aesthetics. The removal of …
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The Effectiveness of Camphorated Paramonochlorophenol, Metacresyl Acetate, and Prednisolone in Combination as an Antimicrobial Agent
<p>Post-treatment discomfort following endodontic procedures can be caused by inflammation due to injudicious use of intracanal medicaments. Camphorated paramonochlorophenol, metacresyl acetate, and prednisolone in combination is advocated to reduce the inflammatory potential of the germicide and …
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