Promjena gustoće i položaja zuba kod ortodontske terapije

undergraduate thesis

• Title (english): Change of bone density and tooth position in orthodontic therapy
• Author: Zoran Tomić
• Mentor: Tanja Jurčević Lulić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2018-02-28, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

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 (english)

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.

• Keywords: Houndsfield units; CT snimke; prividna gustoća; Mimics; terapija; model; zub; kost
• Keywords (english): Houndsfield units; CT scans; apparent density; Mimics; therapy; models; tooth; bone
• Language: croatian
• URN:NBN: urn:nbn:hr:235:972865
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 21:54:30