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Assessment of KÖle analysis (Yuinzing modification) in Mosul city (a cephalometric study)

Authors: Younis MS Hasan --- Ahmad A Abdulmawjood --- Khidhair A Al–Jumaili
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2011 Volume: 11 Issue: 3 Pages: 199-206
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: The aim of this study is to assess Köle analysis (Tuinzing modification) for determining the possible positions of chin (soft and hard tissue) in skeletal Cl.I, Cl.II and Cl. III type of malocclusion of adult age group and for both genders. Materials and Methods: The study was carried out on the lateral cephalometric radiograph of (118) subjects of adult age group (18-25) years old; Cl I type (28 male and 19 female), Cl II type (19 male and 17 female) and Cl III type (18 male and female 17). SNA, SNB and ANB were used to estimate the type of skeletal malocclusion. For the analysis, 2 lines perpendicular to SN line are drawn touching the most anterior point of the upper lip-Ls (upper lip plane) and one from the infra orbital point-Or (orbital plane). The position of the chin points (hard and soft tissue) were assessed via determining the position of (Pog and Pg) respectively in relation to these two vertical planes using five scores: Score 1: give to the chin point that situated posterior to orbital plane. Score 2: give to the chin point that situated in a touch with orbital plane. Score 3: give to the chin point that situated in between orbital plane and upper lip plane. Score 4: give to the chin point that situated in a touch with upper lip plane. Score 5: give to the chin point that situated anterior to the upper lip plane. Results: The positions of Pog and Pg: Cl I mainly at score (2 and 3) respectively, Cl II mainly at score (1and 2) respectively and Cl III type Pog gave rise to slight increase of score (3 than 2) while Pg gave rise to slight increase of score (3 than 5) with no significant difference between genders for all classes. Conclusions: Köle analysis (Tuinzing modification) may be valuable for determining chin (soft and hard tissues) of Cl I, Cl II and Cl III types of malocclusion of adult age group and for both genders


Article
The Direction Of Distal Segment Relapses After Mandibular Setback Surgery Vertical Ramus Versus Bilateral Sagittal Split Osteotomies

Authors: Ra'ed Mohammed Ayoub Al-Delayme --- Qutabah Abdul Razak --- Hassan Ali Hamzah
Journal: Journal of University of Babylon مجلة جامعة بابل ISSN: 19920652 23128135 Year: 2013 Volume: 21 Issue: 3 Pages: 1076-1085
Publisher: Babylon University جامعة بابل

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Abstract

The present study evaluates the direction of postoperative horizontal and vertical changes (relapse) that occur at B point and pogonion after vertical ramus osteotomy (VRO) without fixation and bilateral sagital split osteotomy (BSSO) with semirigid internal fixation in mandibular setback operation in eleven patients with mandibular setback operation B.S.SO (n=6), V.R.O(n=5) .Postoperative changes (relapse) of B-point and Pogonion in horizontal and vertical axis from 1 week post operatively (T0) to 1 year post operatively (T2) were assessed and compared with initial direction of set back. In all VRO cases, distal segments moved posteriorly and inferiorly immediately after the release of MMF.As for in BSSO cases, distal segments moved anteriorly and supereriorly immediately after the release of MMF

إن الهدف من هذه الدراسة هو تقيم اتجاه النكس الحاصل بعد عمليات ارجاع الفك السفلي في الاتجاهين الأفقي و العامودي عند النقطة (ب) و النقطة (بوكونيون) عند اجراءعمليات النشر العمودي للشعبة الصاعدة بدون استعمال أي تثبيت مع النشر القسمي للشعبة الصاعدة وباستعمال تثبيت شبه صلب لدى احد عشر مريضا يعانون من سوء إطباق هيكلي من الصنف الثالث .حيث تبين انه في كل حالات النشر العمودي تحركت القطعة البعيدة بالاتجاه الخلفي و السفلي بعد إزالة التثبيت بين الفكين إما حالات النشر ألقسمي ثنائي الجانب 0تحركت بالاتجاه الأمامي و العلوي بعد إزالة التثبيت بين الفكين

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