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cranial base and its relation with jaws rotation in adult(CBCT scan study)

قاعدة القحف و علاقتها باتجاه دوران الفكين لدى البالغين (دراسة بواسطة التصوير الطبقي المحوري المخروطي)

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 Publication date 2015
  fields Dentistry
and research's language is العربية
 Created by Shamra Editor




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Facial structures, as well as their functions and correlations, have been extensively studied to expand the knowledge of craniofacial growth and development and to optimize growth predictions and proper indications of orthodontic and surgical treatments. The cranial base forms the boundaries of the craniofacial complex . The nasomaxillary complex is related to the anterior cranial base, whereas the mandible is related to its posterior portion. Therefore, the shape of the cranial base is an important factor in establishing the position of the maxilla and mandible. Aim: to investigate the relationship of cranial base with jaws rotation in adult orthodontically non-treated subjects using Cone- Beam Computed Tomography (CBCT) scan. Materials and methods: 27 Caucasian adult patients with no prior orthodontics treatment were selected (16 males, 11 females) .Cephalometric measurements determining type of jaw rotation were performed according to Björk's analysis. Pearson's Correlation Coefficient was calculated to investigate the relationship between the CBCT cranial base measurements and Cephalometric measurements determining type of jaw rotation . Results: This study reveal vary correlation between CBCT measurements of cranial base's dimensions and jaws rotation. Conclusions: There is no relationship between the cranial base morphology and Jaws rotation in adult orthodontically non-treated subjects.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة العلاقة بين قاعدة القحف ودوران الفكين لدى البالغين غير المعالجين تقويمياً باستخدام التصوير الطبقي المحوري المخروطي (CBCT). تم اختيار 27 مريضًا بالغًا من القوقاز (16 ذكرًا و11 أنثى) لم يخضعوا لأي علاج تقويمي سابق. تم إجراء قياسات سيفالومترية لتحديد نوع دوران الفكين وفقًا لتحليل بيورك، وتم حساب معامل ارتباط بيرسون لدراسة العلاقة بين قياسات قاعدة القحف وقياسات السيفالومترية. أظهرت النتائج تنوعًا في الارتباط بين قياسات قاعدة القحف ودوران الفكين، ولم يتم العثور على علاقة ذات دلالة إحصائية بين مورفولوجيا قاعدة القحف ودوران الفكين لدى المرضى البالغين غير المعالجين تقويمياً. خلصت الدراسة إلى أنه لا يوجد ارتباط بين شكل قاعدة القحف ودوران الفكين في هذه العينة من المرضى.
Critical review
دراسة نقدية: على الرغم من أن الدراسة قدمت نظرة شاملة على العلاقة بين قاعدة القحف ودوران الفكين باستخدام تقنيات حديثة مثل التصوير الطبقي المحوري المخروطي، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، حجم العينة صغير نسبيًا، مما قد يؤثر على تعميم النتائج. ثانيًا، لم يتم أخذ العوامل البيئية والوراثية الأخرى التي قد تؤثر على دوران الفكين في الاعتبار. ثالثًا، كان من الممكن أن تكون الدراسة أكثر شمولية إذا تم تضمين مجموعة مقارنة من المرضى الذين خضعوا لعلاج تقويمي. وأخيرًا، قد يكون من المفيد إجراء دراسات مستقبلية تشمل عينات أكبر وتستخدم تقنيات تحليلية متعددة لتحسين دقة النتائج وتعميمها.
Questions related to the research
  1. ما هو الهدف الرئيسي من هذه الدراسة؟

    الهدف الرئيسي من هذه الدراسة هو تحري وجود علاقة بين قاعدة القحف ودوران الفكين لدى المرضى البالغين غير المعالجين تقويمياً باستخدام التصوير الطبقي المحوري المخروطي (CBCT).

  2. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    النتائج الرئيسية التي توصلت إليها الدراسة هي أنه لا يوجد ارتباط ذو دلالة إحصائية بين مورفولوجيا قاعدة القحف ودوران الفكين لدى المرضى البالغين غير المعالجين تقويمياً.

  3. ما هي الطرق التي استخدمت في هذه الدراسة لجمع البيانات؟

    استخدمت الدراسة التصوير الطبقي المحوري المخروطي (CBCT) لجمع البيانات، بالإضافة إلى القياسات السيفالومترية لتحديد نوع دوران الفكين وفقًا لتحليل بيورك.

  4. ما هي الانتقادات المحتملة لهذه الدراسة؟

    الانتقادات المحتملة تشمل حجم العينة الصغير، عدم أخذ العوامل البيئية والوراثية الأخرى في الاعتبار، وعدم وجود مجموعة مقارنة من المرضى الذين خضعوا لعلاج تقويمي.


References used
DE BEER GR.The development of the vertebrateskull. Oxford: Oxford University Press,1937
Graber TM, Vanarsdall RL, Vig KWL. Orthodontics: current principles and techniques. 4th ed. Elsevier Inc., 2005. p.117
Enlow DH, Hans MG. Essentials of facial growth. WB Saunders Co., Philadelphia; 1996. p. 193-199
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Many of researchers concerned jaws bases dimensions because of it's a part of craniofacial complex , its influence on the facial aestheticand functional portions .Though these dimensions were studied by Björk the width of the jaws bases in the diff erent planes, its relation with craniofacial growth and development had been not studied . Aim: The aim of this study is to investigate the relationship of the length and width of the jaws in the frontal plane with Facial Growth Type in adults using Cone-Beam Computed Tomography scan (CBCT). Materials and methods: 33 adult patients (22 female, 11 male) with no prior orthodontic treatment were selected with age average 16 - 27 years ( mean age of 20.02 years, females average age was 20.15 years ; males average age was 21.84 years ) of age , were ordinary undergoing CBCT scan for non-orthodontics purpose. Cephalometric measurements determining facial growth type were performed according to Jarabak'sanalysis. Pearson's Correlation Coefficient was calculated to investigate the relationship between the CBCT jaws measurements and facial growth type according to Jarabak's analysis. Results :CBCT measurements of jaws' dimensions in the frontal plane showed no statistical significant differences. Conclusion:There is no relationship between jaws bases' dimensions in the frontal plane and facial growth pattern in adults orthodontic ally non-treated subjects.
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