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Size of lower jaw as an early indicator of skeletal class III development

Veličina donje vilice kao rani pokazatelj razvoja skeletne klase III

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2008
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Authors
Stojanović, Zdenka
Nikodijević, Angelina
Udovičić, Božidar
Milić, Jasmina
Nikolić, Predrag
Article (Published version)
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Abstract
Background/Aim. Malocclusion of skeletal class III is a complex abnormality, with a characteristic sagital position of the lower jaw in front of the upper one. A higher level of prognatism of the lower jaw in relation to the upper one can be the consequence of its excessive length. The aim of this study was to find the differences in the length of the lower jaw in the children with skeletal class III and the children with normal sagital interjaw relation (skeletal class I) in the period of mixed dentition. Methods. After clinical and x-ray diagnostics, profile tele-x-rays of the head were analyzed in 60 examinees with mixed dentition, aged from 6 to 12 years. The examinees were divided into two groups: group 1 - the children with skeletal class III and group 2 - the children with skeletal class I. The length of the lower jaw, upper jaw and cranial base were measured. The proportional relations between the lengths measured within each group were established and the level of difference i...n the lengths measured and their proportions between the groups were estimated. Results. No significant difference between the groups was found in the body length, ramus and the total length of the lower jaw. Proportional relation between the body length and the length of the lower jaw ramus and proportional relation between the forward cranial base and the lower jaw body were not significantly different. A significant difference was found in proportional relations of the total length of the lower jaw with the total lengths of cranial base and the upper jaw and proportional relation of the length of the lower and upper jaw body. Conclusion. Of all the analyzed parameters, the following were selected as the early indicators of the development of skeletal class III on the lower jaw: greater total length of the lower jaw, proportional to the total lengths of cranial base and the upper jaw, as well as greater length of the lower jaw body, proportional to the length of the upper jaw body. .

Uvod/Cilj. Malokluzija skeletne klase III kompleksna je nepravilnost, sa karakterističnim sagitalnim položajem donje vilice ispred gornje. Veći stepen prognatizma donje vilice u odnosu na gornju može biti posledica njene prekomerne dužine. Cilj ovog rada bio je utvrđivanje razlike u dužinama donje vilice i međusobnim odnosima pojedinih kefalometrijskih parametara kod dece sa skeletnom klasom III i dece sa normalnim sagitalnim odnosom vilica (skeletna klasa I), u doba mešovite denticije. Metode. Kod 60 ispitanika sa mešovitom denticijom, uzrasta 6-12 godina, nakon kliničke i rendgenske dijagnostike, analizirani su profilni telerendgenski snimci glave. Ispitanici su bili podeljeni u dve grupe: prva grupa - ispitanici sa skeletnom klasom III, druga grupa - sa skeletnom klasom I. Merene su dužine donje vilice, gornje vilice i kranijalne baze. Utvrđivane su proporcije između izmerenih dužina unutar svake grupe i procenjivana značajnost razlika izmerenih dužina i njihovih proporcija između g...rupa. Rezultati. Dužine tela, ramusa i totalna dužina donje vilice, nisu bile značajno različite između grupa. Proporcije dužine tela i dužine ramusa donje vilice i proporcije dužina prednje baze lobanje i tela donje vilice, nisu bile značajno različite. Značajna razlika utvrđena je za proporcionalne odnose totalne dužine donje vilice sa totalnim dužinama kranijalne baze i gornje vilice i proporcionalni odnos dužina tela donje i gornje vilice. Zaključak. Kao rani pokazatelji razvoja skeletne klase III, među ispitivanim parametrima, izdvojeni su: veća proporcija totalne dužine donje vilice sa totalnim dužinama kranijalne baze i gornje vilice i veća proporcija dužina tela donje vilice i dužine tela gornje vilice. .

Keywords:
malocclusion / angle class III / child / cephalometry / jaw / mandible / research / malokluzija / anglova klasa III / deca / kefalometrija / vilice / manidibula / istraživanje
Source:
Vojnosanitetski pregled, 2008, 65, 8, 589-595
Publisher:
  • Vojnomedicinska akademija - Institut za naučne informacije, Beograd

DOI: 10.2298/VSP0808589S

ISSN: 0042-8450

WoS: 000258543100002

Scopus: 2-s2.0-52449085252
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URI
http://smile.stomf.bg.ac.rs/handle/123456789/1413
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