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Article
Postoperative assessment of dental implants by using multi-slice computed tomography

Authors: Resha J. Al-Sudani --- Lamia Al-Nakib لمياء حامد النقيب --- Shifaa H. Al-Naimi
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2013 Volume: 25 Issue: 4 Pages: 52-55
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Implantology is a fast growing area in dentistry. One of the most common issues encountered in dentalimplantation procedures is the lack of adequate preoperative planning. Conventional radiography may not be ableto assess the true regional three-dimensional anatomical presentation. Multi Slice Computed Tomography providesdata in 3-dimentional format offering information on craniofacial anatomy for diagnosis; this technology enables thevirtual placement of implant in a 3-Dimensional model of the patient jaw (dental planning).Patients, Material and Methods: The sample consisted of (72) Iraqi patients indicated for dental implant (34 male and38 female), age range between (20-70) years old. They were examined during a time period started from December2012 to April 2013. All the patients who subjected to implant treatment depending on the pre-operative panoramicradiograph were referred Al-Kharkh General hospital, spiral CT scan Department, for postsurgical assessmentevaluate the angulation of fixture in relation to the angulation of bone in coronal and sagittal sections by usingMulti-Detector Computed Tomography.Results: The present study showed that the angulation of implant affected by age, sector, and tooth position in thesame jaw, and not affected by gender.Conclusion: Multi-Slice Computed Tomography provides a great understanding about bone angulation, it necessaryas a diagnostic tool for treatment planning pre and post-operatively


Article
Assessment of mandibular radiomorphometric indices as predictors of osteoporosis in postmenopausal women (Cephalometric reconstructed computed tomographical study)

Authors: Alaa S. Mahdi علاء صالح مهدي --- Lamia Al-Nakib لمياء حامد النقيب
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2014 Volume: 26 Issue: 2 Pages: 50-57
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Osteoporosis affects almost all of the bones in the female body; the most important one in the facialbone is mandible. Menopause is defined as an absence of the menses for one year. During this time, estrongen,progesterone and ovarian androgens production are diminished due to adult onset ovarian failure which leads toosteoporosis. This study aimed to evaluate the use of computed tomography mandibular morphometric indices forthe assessment of pre and postmenopausal osteoporotic women.Subjects and material: This study conducted on 50 Iraqi females divided into 2 groups 20 -30years old as a controlgroup and over50 years old as a study group attending Al-Karkh hospital, Department of ComputedTomography.(each group25 female). Information from each female was recorded and mentioned on a case sheetspecially prepared. Data collected, when analysed, using SPSS version 13 program loaded on a computer machine.Results: All the measurements in this study( gonial angle in degree, antigonial angle in degree and depth inmillimetre, mandibular and mental thickness in millimetre, bone mineral density in HU and mandibular cortexindex),there were no statically significant differences between right and left side P-value <0.001. Gonial angle hadstatistically positive linear correlation with age in the study group P-value <0.001. Bone mineral density andmandibular and mental thickness had statically negative linear correlation with age. Antigonial angle increased asage increased till reach 180 degree in some cases and the depth decreased correlated to the age till reach zeromm in some cases P-value <0.001. Mandibular cortex index increased in bone irregularity related to increase in age.Conclusion: It was concluded that osteoporosis and osteoporosis risk in postmenopausal females could be detectedby using CT scan through measuring certain mandibular radiomorphometric indices

تنخر العظام یؤثر على كل عظام الانثى ما بعد انقطاع الطمث, من ضمن العظام عظام الوجھ والفكین خاصة عظمة الفك الاسفل .یتأثر ھذا العظم وضمن متغیرات تشمل اضمحلال العظم , ترقرق الطبقھ السفلى الذقنیھوالخدیھ , عدم انتظام الصفیحات العظمیھ التي تؤدي الى خشونة العظم وعدم انتظامھ في الاشعھ,تغیر زاویة عظمة الفك الاسفل وزیادة درجتھا, زیادة زاویة اسفل الذقن لتصل الى 180 درجھ تقریبا ومسافة اسفل الذقن تتغیر تباعا .30 ) سنھ والنموذج القیااسي فوق ال 50 سنھ النموذج البحثي. _ تمت ھذه الدراسھ على 50 امرأه عراقیھ وقسمت الى قسمین ( 20قصدوا مستشفى الكرخ التعلیمي قسم الاشعھوالمفراس الحلزوني اخذت المعلومات الطبیھ والسریریھ من المریضھ وسجلت في ورقة تشخیصخاصھ خصصت لكل مریض.النسخھ 13 (SPSS) جمعت النتائج وحللت احصائیا برسوم بیانیھ باستعمال برنامجاوضحت النتائج لكل المتغیرات التي جمعت (زاویة الفك الاسفل, الزاویة الخدیھ , العمق الخدي ,سمك العظم في المنطقة الذقنیھ والخدیھ, وكثافة العظم والمقیاس السمكي الخدي) بانھلایوجد اختلاف بین الجھتین (الیمنى والیسرى) لكل مریضلزاویة الفك الاسفل تغیر بصورة طردیھ وعلاقة موجبھ مع العمرلكل مریض.كثافة العظم والسمك الخدي الذقني یتغیر بصوره عكسیھ وسالبھ مع زیادة العمر.الزاویھ الخدیھ تتغیر بزیادة العمر لتصل تقریبا 180 درجھ في بعضالحلات اما العمق فیصل تقریبا مستوى الصفر في بعضالحالات التي یصل فیھا الزاویھ الخدیھ ل 180 درجھ.المقیاس السمكي الخدي یزداد عدم انتظامھ ( للعظم) بزیادة العمر الصنف الثاني والصنف الثالث.اخیرا نتوصل بان ھشاشة العظام وخطر الاصابھ بھا عند الاناث ما بعد انقطاع الطمث یزداد بزیادة العمر ویمكن ان یشخصعن طریق مقایس معینة في الفك الاسفل بسھولھ باستعمالالمفراس الحلزوني.

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