Author(s):
1. Zorana Stamenković, Clinic of Orthodontics, School of Dentistry, University of Belgrade, Serbia
2. Nenad Nedeljković, Clinic of Orthodontics, School of Dentistry, University of Belgrade, Serbia
3. Vladan Mirjanić, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina

Abstract:
Self-ligating system is used very often in modern orthodontic practice during treatment of crowding, if it is desirable to avoid extraction in some cases. Treatment with this system could provide enough space for correct position of all teeth in the dental arch. The aim of this report was to show effects of self-ligating system in patient with crowding in permanent dentition. In this case male patient in the age of 12 years and 5 months was treated with Damon system in both jaws. Before treatment study casts analysis, orthopantomograph, lateral cephalogram, intraoral and extraoral photos have been done. Missing space was 3mm in the upper and 7.5mm in the lower jaw, both jaws were narrow, overjet was 4 mm, overbite 4 mm and patient had ½ Class II occlusion. On the lateral cephalogram angle ANB was 3.5˚, angle I/SpP 68˚, angle i/MP 80˚, angle I/i 111.5˚, sum of angles of Bjork`s polygon was 392˚. Whole treatment has been finished after 18 months. After treatment study casts, intraoral and extraoral photos and lateral cephalogram have been done. On the and of treatment patient had stabile occlusion (Class I), angle ANB was 3˚, I/SpP 65˚, i/MP 80˚, I/i 120˚, sum of angles of Bjork`s polygon 394˚, overjet was 2.5mm and overbite 3mm. Now, patient is in retention period without sings of relapse.

Key words:
crowding,orthodontic treatment,self-ligating brackets

Thematic field:
SYMPOSIUM B - Biomaterials and nanomedicine

Date of abstract submission:
08.09.2020.

Conference:
Contemporary Materials 2020 - Savremeni materijali