Promjena gustoće i položaja zuba kod ortodontske terapije

Tomić, Zoran (2018) Promjena gustoće i položaja zuba kod ortodontske terapije. = Change of bone density and tooth position in orthodontic therapy. Undergraduate thesis , Sveučilište u Zagrebu, Fakultet strojarstva i brodogradnje, UNSPECIFIED. Mentor: Jurčević Lulić, Tanja.

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Abstract (Croatian)

Ovim radom analizirana je promjena gustoće alveolne kosti prije i nakon ortodontske terapije koristeći CT snimke i programski paket Mimics. Koristeći ovu metodu moguće je definirati smjer djelovanja sile, pomak i centar rotacije promatrajući promjenu vrijednosti Houndsfield unitsa (HU) alveolne kosti. Primjenjujući empirijske jednadžbe, preko promjene HU definirana je i promjena prividne gustoće, koja je pokazatelj procesa koštane pregradnje, odnosno procesa resorpcije i apozicije, a analogno s gustoćom i promjena modula elastičnosti. Koristeći programski paket Mimics promjene HU vrijednosti koje su direktno povezane s pomakom zuba, potvrđene su uspoređivanjem modela prije i nakon terapije.

Abstract

In this thesis changes in alveolar bone density is analysed before and after orthodontic treatment by using CT scans and Mimics software. In this method it is possible to define force direction, tooth movement and center of rotation by observing changes of Houndsfield Unit (HU) in alveolar bone. By applying empirical equations, it is possible to define apparent density change through HU change which is direct indicator of bone remodelling processes, which consists of resorption and apposition processes, and elastic modulus proportional to apparent density change. Using Mimics software, HU value change, along with tooth movement, are confirmed by comparing models before and after therapy.

Item Type: Thesis (Undergraduate thesis)
Uncontrolled Keywords: Houndsfield units; CT snimke; prividna gustoća; Mimics; terapija; model; zub; kost
Keywords (Croatian): Houndsfield units; CT scans; apparent density; Mimics; therapy; models; tooth; bone
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 200 Department of Engineering Mechanics > 240 Chair for Biomechanics and Ergonomy
Date Deposited: 23 Feb 2018 10:35
Last Modified: 06 Mar 2018 16:25
URI: http://repozitorij.fsb.hr/id/eprint/8440

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