|
|
Stress - strain analysis of save first molar tooth
Valášek, Jiří ; Fuis, Vladimír (referee) ; Florian, Zdeněk (advisor)
This diploma thesis specialises in stress – strain analysis of the save tooth. Concretely this thesis works with the save tooth with cavity of the I. and II. class. At the beginning of this work you can find description of basic filling materials, different ways of cavity´s preparation and subclassification of cavity. This work describes production of geometric model of health and save tooth with cavity of the I. and II. class. Model geometer of the save tooth was im-plemented in several ways, each one concerning different form of cavity, size of cavity and different filling materials. Final element net was created on the base of these geometric mo-dels. Computational model was created with the help of the programme ANSYS 11.0 in gra-phic environment Workbench and with the help of the final elements method. The results of the analysis are following: Continuity of the save tooth happens to break thereby the whole stiffness decreases in comparison with the save tooth. Two filling materials were used for sanitation of the tooth: amalgam and composite resin. As a result of the analysis I consider amalgam to be more suitable for sanitation of teeth in moral section.
|
|
|
Utilization of quickly renewable materials in the filling materials
Keprdová, Šárka ; Dohnálek,, Pavel (referee) ; Rovnaníková, Pavla (referee) ; Ševčík, Milan (referee) ; Bydžovský, Jiří (advisor)
Construction is a very dynamically developing industry that is placing ever greater demands on the properties of used building materials and structures built on them. In this context, there is a long-term trend to use construction materials made from natural quickly renewable raw materials. These tendencies are caused by natural reaction to the overly technological modern society, as well as efforts towards a greener approach in construction. In this sense, the natural materials from renewable sources means technologically processed organic material of plant origin. Dissertation focuses on the research and subsequent development of filling materials for vertical and horizontal structures based on quickly renewable materials. Pivotal quickly renewable raw material used in the production of filling material is technical hemp. Technical hemp is quickly renewable raw material with very good properties very similar to wood. Furthermore, the research focused on secondary raw materials, which partly replace the binder of the filling material. The resulting filling material has good physical-mechanical and thermo-technical characteristics.
|
|
|
Filling materials for vertical and horizontal constructions using renewable raw materials
Gregor, Petr ; Vacula, Miroslav (referee) ; Bydžovský, Jiří (advisor)
This thesis deals with industrial hemp and its use in vertical and horizontal structures. The work is mainly focused on the fillers of industrial hemp and inorganic binder. In the practical part of the feasibility study for future use of industrial hemp in the construction industry as a filling materiál in vertical and horizontal structures. This area has been targeted by all test samples. They are presented here and evaluated and compared the results of tests on unconfined compressive strength, compressive strength, depending on the deformation density of fresh and hardened mixture and the termal conductivity of different types of inorganic binders and fillers such as hemp.
|
|
|
Stress-strain Analysis of Dental Veneers
Valenta, Jiří ; Valášek, Jiří (referee) ; Marcián, Petr (advisor)
This thesis focuses on stress-strain analysis of the upper central incisor with applied veneer and its variations with proximal fillings and endodontic treatment. The basic materials and veneer types are introduced at the beginning. Next chapter describes the creation of geometric models of a healthy tooth, veneers and fillings. The veneer geometry model has been done in several variants, taking different thickness values, veneer ranges and used materials into account. A finite element mesh was applied to the models. The computation model was solved using the finite element method using the ANSYS 14.0 software in the Workbench graphics environment. The results of the analysis show that the composite material is more suitable for veneers placed partially in the dentin - either with proximal fillings or without them. The ceramic material is a better option for endodontic treatment. Veneers located in the enamel are not significantly affected by the choice of material and the ceramic material is more appropriate only when proximal fillings are applied.
|
|
|
Utilization of quickly renewable materials in the filling materials
Keprdová, Šárka ; Dohnálek,, Pavel (referee) ; Rovnaníková, Pavla (referee) ; Ševčík, Milan (referee) ; Bydžovský, Jiří (advisor)
Construction is a very dynamically developing industry that is placing ever greater demands on the properties of used building materials and structures built on them. In this context, there is a long-term trend to use construction materials made from natural quickly renewable raw materials. These tendencies are caused by natural reaction to the overly technological modern society, as well as efforts towards a greener approach in construction. In this sense, the natural materials from renewable sources means technologically processed organic material of plant origin. Dissertation focuses on the research and subsequent development of filling materials for vertical and horizontal structures based on quickly renewable materials. Pivotal quickly renewable raw material used in the production of filling material is technical hemp. Technical hemp is quickly renewable raw material with very good properties very similar to wood. Furthermore, the research focused on secondary raw materials, which partly replace the binder of the filling material. The resulting filling material has good physical-mechanical and thermo-technical characteristics.
|
|
|
Stress-strain Analysis of Dental Veneers
Valenta, Jiří ; Valášek, Jiří (referee) ; Marcián, Petr (advisor)
This thesis focuses on stress-strain analysis of the upper central incisor with applied veneer and its variations with proximal fillings and endodontic treatment. The basic materials and veneer types are introduced at the beginning. Next chapter describes the creation of geometric models of a healthy tooth, veneers and fillings. The veneer geometry model has been done in several variants, taking different thickness values, veneer ranges and used materials into account. A finite element mesh was applied to the models. The computation model was solved using the finite element method using the ANSYS 14.0 software in the Workbench graphics environment. The results of the analysis show that the composite material is more suitable for veneers placed partially in the dentin - either with proximal fillings or without them. The ceramic material is a better option for endodontic treatment. Veneers located in the enamel are not significantly affected by the choice of material and the ceramic material is more appropriate only when proximal fillings are applied.
|
|
|
Stress - strain analysis of save first molar tooth
Valášek, Jiří ; Fuis, Vladimír (referee) ; Florian, Zdeněk (advisor)
This diploma thesis specialises in stress – strain analysis of the save tooth. Concretely this thesis works with the save tooth with cavity of the I. and II. class. At the beginning of this work you can find description of basic filling materials, different ways of cavity´s preparation and subclassification of cavity. This work describes production of geometric model of health and save tooth with cavity of the I. and II. class. Model geometer of the save tooth was im-plemented in several ways, each one concerning different form of cavity, size of cavity and different filling materials. Final element net was created on the base of these geometric mo-dels. Computational model was created with the help of the programme ANSYS 11.0 in gra-phic environment Workbench and with the help of the final elements method. The results of the analysis are following: Continuity of the save tooth happens to break thereby the whole stiffness decreases in comparison with the save tooth. Two filling materials were used for sanitation of the tooth: amalgam and composite resin. As a result of the analysis I consider amalgam to be more suitable for sanitation of teeth in moral section.
|
|
|
Filling materials for vertical and horizontal constructions using renewable raw materials
Gregor, Petr ; Vacula, Miroslav (referee) ; Bydžovský, Jiří (advisor)
This thesis deals with industrial hemp and its use in vertical and horizontal structures. The work is mainly focused on the fillers of industrial hemp and inorganic binder. In the practical part of the feasibility study for future use of industrial hemp in the construction industry as a filling materiál in vertical and horizontal structures. This area has been targeted by all test samples. They are presented here and evaluated and compared the results of tests on unconfined compressive strength, compressive strength, depending on the deformation density of fresh and hardened mixture and the termal conductivity of different types of inorganic binders and fillers such as hemp.
|
guest ::
