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Standard Markers of Vertical Alignment of Mandible and Maxilla in Adult Population of the Syrian Coast

العلامات المعيارية للتوضع العمودي للفكين عند سكان الساحل السوري

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 Publication date 2014
and research's language is العربية
 Created by Shamra Editor




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The craniofacial complex is affected by both vertical and sagittal changes. However, previous studies did not consider the changes presented by the bone bases of both mandible and maxilla in the vertical plane in the case of the adult population of the Syrian Coast, with normal permanent occlusion. Aim: is to study the degree of correlation between the cephalometric parameters which have been considered by previous studies as real indicators for the vertical alignment of the mandible and maxilla with each sex, and determine their standard values to be able to classify the facial morphology in the vertical plane into 3 patterns (long face, medium face, and short face) in the population of the Syrian Coast with permanent normal occlusion. Materials: 106 lateral cephalometric x-rays of adult patients with permanent normal occlusion, without prior orthodontic treatment were used (46 males, 60 females) from the archive of the Orthodontics and Dentofacial Orthopedics Department at Tishreen University. The age ranges were between 13-30 years old. The cephalometric tracing was carried out by hand and the cephalometric measurements that have been considered by previous studies as real indicators for the vertical alignment of the mandible and maxilla were taken. Results: There were no statically significant differences between the two sexes for the Cephalometric parameters that have been considered by previous studies as real indicators for the vertical alignment of the mandible and maxilla, standard values of the population of the Syrian Coast with permanent normal occlusion for the vertical alignment of the mandible and maxilla were obtained which were very close to the values received in previous studies, though there have been observed some variations.


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Research summary
يتناول البحث دراسة التوضع العمودي للفكين عند سكان الساحل السوري من البالغين ذوي الإطباق الدائم الطبيعي. يهدف البحث إلى تحديد القيم المعيارية للمتغيرات السيفالومترية التي تعتبر مؤشراً حقيقياً للتوضع العمودي للفكين وتصنيف مورفولوجيا الوجه إلى ثلاثة نماذج (وجه طويل، وجه متوسط، وجه قصير). استخدم الباحث 106 صور شعاعية سيفالومترية جانبية لأفراد تتراوح أعمارهم بين 13 و30 سنة، وتم تحليل هذه الصور يدوياً. أظهرت النتائج عدم وجود فروقات ذات دلالة إحصائية بين الجنسين في المتغيرات السيفالومترية المدروسة، وكانت القيم المعيارية للتوضع العمودي للفكين قريبة من القيم الواردة في الدراسات السابقة. كما أظهرت النتائج أن النموذج السائد للنمو هو النمو الأفقي، وأن دوران الفك السفلي الغالب هو دوران أمامي خفيف الشدة. أوصى الباحث بإجراء دراسات موسعة تشمل فئات عمرية مختلفة وأخذ نتائج هذه الدراسة بعين الاعتبار عند التخطيط للمعالجة التقويمية.
Critical review
دراسة نقدية: يعتبر البحث مهماً في مجال تقويم الأسنان والفكين، حيث يقدم قيماً معيارية للتوضع العمودي للفكين لدى سكان الساحل السوري. ومع ذلك، يمكن توجيه بعض الانتقادات البناءة للبحث. أولاً، العينة المستخدمة قد تكون غير كافية لتمثيل كافة سكان الساحل السوري، مما قد يؤثر على تعميم النتائج. ثانياً، الاعتماد على القياسات اليدوية قد يؤدي إلى بعض الأخطاء البشرية، وكان من الممكن استخدام تقنيات تحليل رقمية أكثر دقة. ثالثاً، لم يتناول البحث تأثير العوامل البيئية والديموغرافية بشكل كافٍ، مما قد يكون له تأثير على النتائج. على الرغم من هذه النقاط، فإن البحث يضيف قيمة علمية مهمة ويشكل أساساً لدراسات مستقبلية.
Questions related to the research
  1. ما هو الهدف الرئيسي من البحث؟

    الهدف الرئيسي هو دراسة مدى ارتباط المتغيرات السيفالومترية التي تعتبر مؤشراً حقيقياً للتوضع العمودي للفكين وتحديد القيم المعيارية لها لدى سكان الساحل السوري من البالغين ذوي الإطباق الدائم الطبيعي.

  2. ما هي العينة المستخدمة في البحث؟

    تم استخدام 106 صور شعاعية سيفالومترية جانبية لأفراد تتراوح أعمارهم بين 13 و30 سنة، وجميعهم من البالغين ذوي الإطباق الدائم الطبيعي.

  3. ما هي النتائج الرئيسية التي توصل إليها البحث؟

    النتائج الرئيسية هي عدم وجود فروقات ذات دلالة إحصائية بين الجنسين في المتغيرات السيفالومترية المدروسة، وأن القيم المعيارية للتوضع العمودي للفكين كانت قريبة من القيم الواردة في الدراسات السابقة. كما أن النموذج السائد للنمو هو النمو الأفقي، وأن دوران الفك السفلي الغالب هو دوران أمامي خفيف الشدة.

  4. ما هي التوصيات التي قدمها الباحث؟

    أوصى الباحث بإجراء دراسات موسعة تشمل فئات عمرية مختلفة وأخذ نتائج هذه الدراسة بعين الاعتبار عند التخطيط للمعالجة التقويمية لدى المرضى البالغين من سكان الساحل السوري.


References used
Opdebeeck H, Bell WH. The short face syndrome.Am J Orthod 1978;73(5):499-511
Eröz UB, Ceylan I, Aydemir S. An investigation of mandibular morphology in subjects with different vertical facial growth patterns. Aust Orthod J. 2000 Mar;16(1):16-22
Alzoubi IA, Hammad MM, Abu Alhaija ES. Periodontal parameters in different dentofacial vertical patterns. Angle Orthod. 2008 Nov;78(6):1006-14
Björk A. Variations in the growth pattern of the human mandible. Longitudinal radiographic study by the implant method. J Dent Res 1963;42:400-11
Björk A. Prediction of mandibular growth rotation. Am J Orthod. 1969 Jun;55(6):585- 99
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