Naslov
Comparison of activator-headgear and Twin Block treatment approaches in class II division 1 malocclusion

Autori
Špalj, Stjepan ; Mroz Tranesen, Kate ; Birkeland, Kari ; Katić, Višnja ; Pavlić, Andrej ; Vandevska-Radunović, Vaska

Izvornik
Biomed Research International (2314-6133) 2017 (2017); 486192-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
class II, functional appliance, orthodontic

Sažetak
The purpose was to compare the treatment effects of functional appliances activator- headgear (AH) and Twin Block (TB) on skeletal, dental, and soft-tissue structures in class II division 1 malocclusion with normal growth changes in untreated subjects. The sample included 50 subjects (56% females) aged 8–13 years with class II division 1 malocclusion treated with either AH (n=25) or TB (n=25) appliances. Pre- and posttreatment lateral cephalograms were evaluated and compared to 50 untreated class II division 1 cases matched by age, gender, ANB angle, and skeletal maturity. A paired sample, independent samples tests and discriminant analysis were performed for intra- and intergroup analysis. Treatment with both appliances resulted in significant reduction of skeletal and soft-tissue facial convexity, the overjet, and the prominence of the upper lip in comparison to untreated individuals (p<0.001). Retroclination of maxillary incisors and proclination of mandibular incisors were seen, the latter being significantly more evident in the TB group (p<0.05). Increase of effective mandibular length was more pronounced in the TB group. In conclusion, both AH and TB appliances contributed successfully to the correction of class II division 1 malocclusion when compared to the untreated subjects with predominantly dentoalveolar changes.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

Napomena
This study is partially supported by University of Rijeka grant (13.06.2.1.53)

POVEZANOST RADA