Tercijarna zbijenost - etiologija i prevalencija

master's thesis

• Title (english): Tertiary crowding – etiology and prevalence
• Author: Barbara Blažičević
• Mentor: Martina Šlaj (mentor)
• Committee member: Martina Šlaj (predsjednik povjerenstva)
• Committee member: Mladen Šlaj (član povjerenstva)
• Committee member: Marina Lapter Varga (član povjerenstva)
• Granter: University of Zagreb; School of Dental Medicine; (Department of Orthodontics); Zagreb
• Defense date and country: 2017-09-28, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Dental Medicine; Orthodontics

Abstract

Zbijenost zuba jedna je od najčešćih malokluzija. Podjela na primarnu, sekundarnu i tercijarnu zbijenost temelji se na vremenu nastanka i etiologiji. Etiologija tercijarne zbijenosti je multifaktorijalna, a sastoji se od nekoliko teorija. Teoriji o pritisku trećih kutnjaka suprotstavlja se činjenica da se tercijarna zbijenost javlja u slučajevima pacijenata kojima kongenitalno nedostaju treći kutnjaci. Druga teorija govori o nedostatku aproksimalne atricije uslijed moderne prehrane. Najprihvatljivija teorija je ona o kasnom rastu mandibule ostvarenom u kasnim adolescentnim godinama. Odabir terapije ovisi o stupnju zbijenosti koji se određuje gnatometrijskim analizama. Postoje dentoalveolarne i dento-dentalne diskrepance. Dentoalveolarna diskrepanca procjenjuje se analizama prostora, a za određivanje dentodentalne diskrepance koristimo odontometriju, odnosno analizu po Boltonu. Ovisno o rezultatima tih analiza, ortodont se odlučuje za odgovarajuću terapiju. Najčešće se koriste fiksne ortodontske naprave uz redukciju interproksimalne cakline. Ukoliko je stupanj kompresije jači, pristupa se ekstrakciji odgovarajućih zuba. Nakon postizanja idealne okluzije fiksnom napravom potrebno je terapiju nastaviti retainerom kako bi se spriječio neželjeni recidiv.

Abstract (english)

Dental crowding is one of the most common malocclusions. The classification into primary, secondary and tertiary crowding is based on the time of occurrence and etiology. The etiology of tertiary crowding is multifactorial, consisting of several theories. The theory about pressure of third molars opposes the fact that the tertiary crowding occurs in persons with congenitally lack of third molars. The second theory states thats the modern diet leads to the lack of aproximal attrition. The most acceptable theory is about the late mandibular growth in the late adolescent years. The choice of therapy depends on the crowding ratio which is determined by gnatometric analysis. There are dentoalveolar and dento-dental discrepancy. Dentoalveolar discrepancy is estimated by the space analysis, while dento-dental discrepancy is determined by the use of odontomterics, specifically Bolton's analysis. Depending on the results of these analysis, orthodontists decide on the appropriate therapy. The most commonly used are fixed orthodontic appliances with interproximal enamel reduction. At the higher compression ratio, we access to extraction of appropriate teeth. After reaching the ideal occlusion with fixed appliances, it is necessary to continue therapy with a retainer to prevent unwanted relapses.

• Keywords: zbijenost zubi; treći kutnjaci; aproksimalna atricija; kasni rast mandibule
• Keywords (english): teeth crowding; third molars; aproximal attrition; late mandibular growth
• Language: croatian
• URN:NBN: urn:nbn:hr:127:580537
• Study programme: Title: dental medicine; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: doktor/doktorica dentalne medicine (doktor/doktorica dentalne medicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2018-01-18 11:54:56