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A review study of dental mini-implants
Pernický, Vojtěch ; Hrubanová, Anna (referee) ; Marcián, Petr (advisor)
This thesis focuses on the study of dental mini-implants, which are becoming a popular choice for replacing missing teeth and retaining overdentures. The insertion of mini-implants is a less invasive procedure that minimizes damage to bone tissue, which shortens the patient's recovery time. One of the key advantages is the possibility of immediate loading of the implant. However, the smaller diameter of these implants means a smaller surface area for osseointegration, which can negatively affect their stability and functionality. This thesis deals with the analysis of deformation and stress states by using computational modeling. The results of this analysis are compared with standard implants to evaluate the mechanical behaviour of mini-implants and their interaction with bone tissue. Based on the results of the analysis, it can be said that the diameter of the implant significantly influences its deformation-stress states.
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On the production of dental parts
Lekeš, Jonáš ; Polzer, Aleš (referee) ; Píška, Miroslav (advisor)
Tato práce popisuje části dentálních náhrad, lékařské pojmy, které se s nimi vážou a vysvětluje proces a problematiku koncepce a výroby těchto částí. Různé druhy biomateriálů jako kovy, keramika, polymery či kompozity jsou zde popsány, hlavní důraz je však kladen na titanové a chrom kobaltové slitiny a korozivzdorné oceli. Experimentální část nabízí 2 řešení zlepšení výroby součásti. První část experimentální části se zabývá zlepšením kvality styčné plochy pilíře zvýšením hustoty síťování součásti. Druhá část nabízí nahrazení operace frézování operací vrtání. Byly vybrány nástoje od 4 výrobců. Pro nalezení vhodného nástroje jsou provedeny 2 testy vrtání a vybrán nástroj vhodný pro obrábění titanové a chrom kobaltové slitiny.
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Material development of dental implants
Legerský, Radek ; Borák, Libor (referee) ; Florian, Zdeněk (advisor)
The study deals with the development of materials currently used in the manufacture of dental implants. Special attention is paid to chemical composition, mechanical properties and biocompatibility of these materials. The aim and result of the thesis is creation of comprehensive overview of the different material groups, which are characterized by their quality and appropriateness of use. Benefit is an assessment of titanium alloys, which exhibit excellent properties both in terms of mechanical, chemical and biocompatible.
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Stress - strain analysis of jaw with tooth implant type BOI
Marcián, Petr ; Fuis, Vladimír (referee) ; Florian, Zdeněk (advisor)
Submitted master thesis deals with stress - strain analysis of jaw, with dental implant. The implant serve as a suitable pillar for crown or dental bridge, when one or more teeth are lost. The project is oriented on BOI (basale - oseo - integrable) dental implant type, which is produced by DENTALIHDE company. Stress – strain condition of the mandible system with implant have been established by computational simulation, with use of the final elements method. Important part of down jowl is simulated on with EDS and EDDS applied types of implants. After implementation the implant begins to heal. Therefore the special attention is paid to stress - strain states on various level of osteointegration. There is a detail description of production of single part computational model and his solving in the master thesis. Presentation of large chapter with results and subsequent alteration stress - strain analysis is part of the master thesis. Program SolidWorks 2005 was used to create the geometric model. Computational model and the actual solving was accomplished with use of ANSYS 11.0 and ANSYS Wor-kbench systems.
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Biomechanical Study of Cranial Implants
Chamrad, Jakub ; Henyš,, Petr (referee) ; Fuis, Vladimír (referee) ; Florian, Zdeněk (advisor)
Tato práce s názvem Biomechanická studie lebečních implantátů se zabývá především výpočtovým modelováním jak nepoškozené lebky, tak i lebky s defektem a lebečním implantátem. Přístup řešení pro vyhodnocování deformačně-napěťových stavů systému lebka-implantát-fixační prvky byl prováděn pomocí výpočtového modelování metodou konečných prvků. Pro validní analýzy a interpretaci výsledků je třeba zvolit vhodnou úroveň výpočtových modelů. Výběr úrovně výpočtového modelu je z tohoto důvodu zásadním problémem, kterému jsou věnována značná část této práce. Bylo prokázáno, že volba úrovně má přímý vliv na hodnoty zkoumaných biomechanicky významných parametrů. Dalším faktorem, který ovlivňuje chování lebečního implantátu a jeho funkčnost, je rozměrová přesnost vyrobené kostní náhrady. Bylo pozorováno, že i malá rozměrová odchylka může způsobit změnu deformačně-napěťových stavů na lebce se zavedeným implantátem a způsobit tak rizikovou situaci z pohledu selhání implantátu nebo jeho fixace. Především způsob fixace implantátu bývá rizikový a snižuje spolehlivost implantátu. Je proto vhodné se na tuto oblast zaměřit a navrhnout možné způsoby zlepšení stávajících postupů nebo navrhnout nové způsoby fixace. Jedním ze zlepšení metody fixace implantátu k lebce může být použití hydroxyapatitového potahu na kontaktním rozhraní kost-implantát. To by mělo vést k oseointegraci, což je požadovaný efekt, který byl v této práci výpočtově modelován a vyhodnocován.
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Biomechanical analysis of bone implant contact for different type of implant profiles
Svobodová, Miriam ; Chamrad, Jakub (referee) ; Marcián, Petr (advisor)
This bachelor thesis deals with the assessment of the influence of the dental implant diameter placed in the bone with a fixed connection between the bone and the given implant on the strain into the bones around the implant,the deformation throughout the system and the stress in the implant. Computational modeling with finite element analysis was used to solve a given task. Two types of the implants with different diameters and bone model with a beam structure and different layer thickness around the implant were modeled. Used material was homogeneous, isotropic and linearly flexible. The overall analysis was carried out at the 2D level. The results show different values for different diameters and thickness of the layers.
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Stress strain analysis of dental implant
Snášelová, Dana ; Florian, Zdeněk (referee) ; Marcián, Petr (advisor)
This bachelor thesis deals with stress strain conditions at interface of dental implant and bone of mandible in two-dimensional space. To solve these proportions the finite element method was used. Solution was realized in finite element software Ansys Workbench 15. This thesis also offers comparsion between different samples, which vary in bone density and type of dental implant.
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Biocompatibility of Implantable MaterialsFocused on Titanium Dental Implants
Moztarzadeh, Amin ; Babuška, Václav (advisor) ; Hrušák, Daniel (referee) ; Chocholatý, Ondřej (referee)
This dissertation thesis deals with the evaluation of biocompatibility and osseointegration of nanostructured titanium materials used for dental implants. Bulk material topography and surface modification of titanium are currently of intense research mainly due to the significant impact on biocompatibility and improvement of osseointegration of dental implants. In the theoretical part are described types of titanium material and different methods of its surface modification. In vitro and in vivo biocompatibility and osseointegration tests are described as well. The experimental work consists of two parts of experiments. In the first experiment, we examined how grain size of nanostructured titanium material influences the behaviour of fibroblastic as well as osteoblastic cells growth on its surface. The experimentally obtained data were statistically analysed and discussed. Grain size was proven to be an important factor that influenced not only the strength of material but also its interactions with cells. The second experiment describes current methods used in the experimental evaluation of osseointegration of dental implants. The results of histological staining methods are illustrated and compared. A standardized and reproducible technique for stereological quantification of bone-implant contact...
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Stress - strain analysis of jaw with tooth implant type BOI
Marcián, Petr ; Fuis, Vladimír (referee) ; Florian, Zdeněk (advisor)
Submitted master thesis deals with stress - strain analysis of jaw, with dental implant. The implant serve as a suitable pillar for crown or dental bridge, when one or more teeth are lost. The project is oriented on BOI (basale - oseo - integrable) dental implant type, which is produced by DENTALIHDE company. Stress – strain condition of the mandible system with implant have been established by computational simulation, with use of the final elements method. Important part of down jowl is simulated on with EDS and EDDS applied types of implants. After implementation the implant begins to heal. Therefore the special attention is paid to stress - strain states on various level of osteointegration. There is a detail description of production of single part computational model and his solving in the master thesis. Presentation of large chapter with results and subsequent alteration stress - strain analysis is part of the master thesis. Program SolidWorks 2005 was used to create the geometric model. Computational model and the actual solving was accomplished with use of ANSYS 11.0 and ANSYS Wor-kbench systems.
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Biocompatibility of Implantable Materials Focused on Titanium Dental Implants
Moztarzadeh, Amin ; Babuška, Václav (advisor) ; Hrušák, Daniel (referee) ; Chocholatý, Ondřej (referee)
This dissertation thesis deals with the evaluation of biocompatibility and osseointegration of nanostructured titanium materials used for dental implants. Bulk material topography and surface modification of titanium are currently of intense research mainly due to the significant impact on biocompatibility and improvement of osseointegration of dental implants. In the theoretical part are described types of titanium material and different methods of its surface modification. In vitro and in vivo biocompatibility and osseointegration tests are described as well. The experimental work consists of two parts of experiments. In the first experiment, we examined how grain size of nanostructured titanium material influences the behaviour of fibroblastic as well as osteoblastic cells growth on its surface. The experimentally obtained data were statistically analysed and discussed. Grain size was proven to be an important factor that influenced not only the strength of material but also its interactions with cells. The second experiment describes current methods used in the experimental evaluation of osseointegration of dental implants. The results of histological staining methods are illustrated and compared. A standardized and reproducible technique for stereological quantification of bone-implant contact...
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