Horizontalna pozicija usana eugnatih ispitanika u dobi od 12 godina

master's thesis

• Title (english): Horizontal lip position of eugnathic subjects aged 12 years
• Author: Jelena Buršić
• Mentor: Sandra Anić Milošević (mentor)
• Granter: University of Zagreb; School of Dental Medicine; Zagreb
• Defense date and country: 2004, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Dental Medicine

Abstract

Postizanje sklada između funkcionalne okluzije i estetike lica važan je čimbenik ortodontske terapije. Poznavanje odnosa tvrdih i mekih tkiva važno je za korekciju malokluzija i dobivanje zadovoljavajućeg izgleda donje trećine lica. U analizi mekih tkiva glavnu komponentu čini sam profil zbog reflektiranja nepravilnosti na licu i procjene korekcije narušenih odnosa. Polazeći od pretpostavke da su meka tkiva i dentoalveolarne anomalije u vezi, ovim istraživanjem pokušale su se utvrditi razlike između klasa I i II/1 kod djevojčica i dječaka u dobi od dvanaest godina. Promatran je horizontalan položaj usana, a mjerena je udaljenost usana od referentnih linija po Burstoneu i Rickettsu. Izmjerena vrijednost smatrana je pozitivnom kad se usna nalazila ispred linije, negativnom kad se nalazila iza, a nulom kad je dodirivala liniju. Pri analizi profila korišten je laterolateralni rentgenogram.
Statističkom obradom provedenih mjerenja došlo se do sljedećih zaključaka. Klasa I ne pokazuje razlike među spolovima; klasa II/1 pokazuje razlike među spolovima; analiza dječaka između klasa I i II/1 pokazuje razlike u položaju gornje i donje usne po oba autora; analiza djevojčica između klasa I i II/1 ne pokazuje značajne razlike; analiza klasa I i II/1 bez obzira na spol pokazuje odstupanje u položaju gornje usne kod oba autora.

Abstract (english)

Harmony between functional occlusion and facial esthetics is very important in orthodontic treatment. Relation between hard and soft – tissue is significant in therapy of mallocclussions and in treatment of the lower third of the face. A soft –
tissue analysis of the profile plays an important role in orthodontic treatment, because all disorders are shown on it. Using the assumption that hard and soft – tissues are correlated, we investigated the differences between class I and II/1 within
two groups of 12-year-olds boys and girls. The soft tissue profile was analysed by Burstone's B-line and Ricketts's E-line. The horizontal lip position consisted of measuring the distance between tips of the lips and the reference line used. The
measured distance was denoted as positive when the lip was ahead of the reference line, as negative when the lip was behind the line, and as zero when the lip was on the line. In the process of the profile analysis, telerentgen was used. Using measured variables statistic analysis showed following conclusions: Angle class I didn't show any differences between females and males; class II/1 showed the differences between females and males; analysing boys between class I and II/1 we may conclude that the differences in the position of upper and lower lip are present; analysing girls between class I and II/1 we may conclude that the differences in the position of upper and lower lip are not present; comparison between classes without sex separation showes differences in the position of upper lip according to Burstone and Ricketts.

• Keywords: ortodoncija; usna
• Keywords (english): Orthodontics; Lip
• Language: croatian
• URN:NBN: urn:nbn:hr:127:900571
• Study programme: Title: Integrated undergraduate and graduate university study of Dental Medicine; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: doktor dentalne medicine (doktor dentalne medicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2024-08-29 10:10:11