Akademik Veri Yönetim Sistemi
Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Marmara Üniversitesi, Diş Hekimliği Fakültesi, Diş Hekimliği Klinik Bilimleri Bölümü, Türkiye
Tezin Onay Tarihi: 2018
Tezin Dili: İngilizce
Öğrenci: STAVROULA SARAFOPOULOU
Danışman: Kadir Beycan
Özet:
AIM: The purpose of this study is to investigate pre- and postsurgically the skeletofacial asymmetry of skeletal Class III, orthognathically treated patients, using Cone-Beam Computed Tomography (CBCT).
MATERIALS AND METHODS: The sample of this retrospective study consists of CBCT records of 20 skeletal Class III patients (5 males, 15 females, mean age 22,35±5,16 years), who underwent orthognathic treatment at the Department of Orthodontics, Faculty of Dentistry, Marmara University. In order to assess the asymmetry, a morphometric midsagittal plane is conducted and landmark displacement of 50 skeletal, dental and soft tissue landmarks is calculated in all three planes of space. Moreover, the skeletofacial asymmetry is assessed by linear and angular measurements of the skeletal, dental and soft tissue structures and possible factors contributing to the appearance of facial asymmetry are quantified. Finally, the asymmetry of the nose and the postoperative changes in the nose area are evaluated.
RESULTS AND CONCLUSION: Preoperatively, Coronoid, Genial tubercle, Gonion and soft tissue Gonion presented significant asymmetry. Residual asymmetry was found, postsurgically, in Coronoid, Condyle, Gonion, Mandibular body length and soft tissue Gonial area. Condyle and Coronoid asymmetry, asymmetry in Gonial area, Ramus length and Lateral ramal inclination discrepancy were correlated with Menton deviation. Alar base, Interalar and Internostril width tend to increase after the orthognathic surgery. Nasiolabial angle has a tendency to decrease after maxillary impaction, whereas it increases in maxillary advancement. 3d diagnosis and evaluation of individual nasal characteristics are indicated since they deliver better and more predictable outcomes in the treatment of Class III asymmetric cases.