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Article
Size and Morphology of Sella Turcica in Iraqi Adults

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Abstract

AbstractTo measure the size and describe the morphology of sella turcica on true lateralcephalometric radiographs; and to determine if there is any statistical significantdifference in the size of sella turcica regarding the genders and skeletal classes.The sample included 130 pretreatment digital lateral cephalometric radiographs(67 female and 63 males) with an age range between 17-25 years, collected from theOrthodontic Department in the College of Dentistry, University of Baghdad. Thesample was divided according to ANB angle into 3 skeletal classes. The size of sellaturcica (length, depth, and diameter) was measured and its morphology wasdetermined. Frequency distribution and percentage described the morphology,independent samples t-test was used to test genders difference, while ANOVA testwas performed to show if there is any statistical significant difference in the size ofsella turcica among the skeletal patterns.Males had slightly higher sella turcica measurements than females with a nonsignificantdifference between genders; on the other hand, class III sample had highersella turcica measurements with a non-significant difference among the skeletalclasses. In addition to the normal morphology, six distinct variations of sella turcicawere identified with the highest percentage to the normal morpholgy.All the linear measurements of the sella turcica were within standard range.Neither gender nor skeletal patterns showed significant differences in sella turcicalinear measurements. Normal morphology of the sella turcica was found in themajority of subjects.


Article
Clinical significance of sella turcica morphologies and dimensions in relation to different skeletal patterns and skeletal maturity assessment

Authors: Kasim A. Obayis قاسم عبيس --- Ali I. Al-Bustani علي اسماعيل البستاني
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 2 Pages: 120-126
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Sella turcica is a saddle-like structure based on the roof of the sphenoid bone and has an importantrole in orthodontic diagnosis and treatment planning. The aims of the study were to assess sella shape and size in anadolescent Iraqi sample in different skeletal classes and to verify the possibility of clinical application of sella turcicain skeletal maturity estimation.Materials and Methods: The study sample composed of (140) Iraqi adolescent subjects aged 10-16 years (91 females,49 males); every subject had true lateral cephalometric radiograph. The sample was subjected to 2 classifications:the 1st included three skeletal classes according to ANB angle, and the 2nd included accelerative and decelerativegroups according to maturity indicators of cervical vertebrae seen radiographically. In each classification, sella sizewas measured using three linear measurements (S.length, S.depth, and S. diameter).Results: Most of sella turcica measurements were not different statistically among the skeletal classes, and thatspecific sella turcica linear measurements can not be obtained for each specific skeletal class throughout thepubertal period. Normal sella was the predominant over the other morphological aberrations in both classificationsystems, while these morphologies occurred more frequently in class II and III. Sella depth and diameter weresignificantly higher in the decelerative than accelerative group, while non significant difference was foundconcerning sella shapes between the two groups.Conclusions: It was concluded that Sella depth and sella diameter measurements can be utilized clinically forpubertal growth phase determination, while sella morphology can not be diagnostic for the accelerative anddecelerative pubertal growth phases


Article
Normal and Abnormal Variations of Sella Turcica in Three Facial Types of Adolescent Iraqi Samples

Authors: Issam Merzah Abdullah --- Lamis Khidher Mohammed
Journal: Medical Journal of Babylon مجلة بابل الطبية ISSN: 1812156X 23126760 Year: 2015 Volume: 12 Issue: 3 Pages: 653-660
Publisher: Babylon University جامعة بابل

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Abstract

Sella(S) turcica is a structure resemble a saddle and based on the roof of the sphenoid bone. For cephalometric tracing, sella point is one of the most commonly used cranial landmarks and it is located in the centre of the sella turcica of the skull. This study were to assess the shape and size of sella in a sample of Iraqi adolescent and with different skeletal classes. The study sample consist of (91) Iraqi adolescent subjects aged 10-16 years (47 females, 44 males); every subject provided with true lateral cephalometric radiograph. The sample was classified into three skeletal classes according to ANB angle. The size of Sella was measured using three linear measurements (S. length, S. depth, and S. diameter). It showed that most of the measurements of sella turcica were not different statistically among the skeletal classes. Normal sella was the predominant over the other morphological aberrations, while these morphologies occurred more frequently in class II and III. throughout the pubertal period specific sella turcica linear measurements cannot be obtained for each specific skeletal class; except between class I and II patterns, Sella depth was statistically higher in the former.


Article
Reliability of the S–N line

Author: Hussain A Obaidi
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2006 Volume: 6 Issue: 1 Pages: 35-41
Publisher: Mosul University جامعة الموصل

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Abstract

Aim: To evaluate the degree of the reliability of the S–N reference line by using highly stable referencelines (vertical and horizontal cranial axes). Materials and Methods: The sample of the studycomprised of lateral cephalometric radiographs of patients 13–18 years, 12 males and 12 females foreach of the three skeletal relationships. The ANB angles were 0–2, more than 2 and less than zerorespectively. The method was conducted by localization of the anterior superior of anterior wall of sellaturcica point (As), which is stable at age 5–6 years, drawing the Vertical Cranial Axis (VCA) whichpass through the point As and tangent to the upper part of the anterior wall of the sella turcica (at leastfor 3 mm); then, drawing the Horizontal Cranial Axis (HCA), which is perpendicular to the VCA at theAs point. The deflection and the sagittal dimension of the S–N line were measured to evaluate thevariation in the location of the points S and N, which are the determinant of the S–N line. Results:Point N had significantly local variation between gender and among the three skeletal relationships, butthat point S had insignificant local variation between gender and among the three skeletal relationships.Conclusion: The S–N line is not stable due to unstability of the location of point N.


Article
The prediction of the relation between anterior facial skeleton and sella turcica in Iraqi sample

Authors: Mohammed Kh. Al-Ani محمد العاني --- Dhia'a J. Al-Dabagh ضياء الدباغ
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 1 Pages: 101-110
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The relation between the anterior facial skeleton and sella turcica may vary from individual toindividual, and the establishment of normal standards in different skeletal patterns will aid in the process ofeliminating any abnormality in such an important region. This study aimed to find the relation of the anterior facialskeleton to the sella turcica in different skeletal patterns and in both gender and also to find the most valid equationfor describing these relationships to be applied practically in different skeletal patterns.Materials and method: The sample consisted of “138” digital true lateral cephalometric radiographsrelated mostly to patients attended to the college of dentistry /Baghdad University with an age range “18-30” years,they classified into three skeletal patterns . Six cephalometric parameters in addition to shape of Sella Turcica weremeasured and assessed for each individual radiograph using AutoCAD program 2008.Results : The linear measurements that assess the relation of sella turcica to anterior facial skeleton in all skeletalpatterns showed a very highly significant gender differences; being larger in males than in females, while for theangular measurements, no gender difference were found. Among the three skeletal patterns only the “S-B Length”and the “ASB angle” showed a very highly significant difference. The Pearson’s correlation test in all skeletal patternsshowed a very highly significant positive correlation among “ S-N, S-A & S-B Length ” and among “ NSA, NSB & ASBangles”, however highly predictable regression equations in the three skeletal patterns were found for the first time inIraq between “ NSB & NSA angles ”.Conclusions: The introduction of valid predictable equations for the first time that can assess the relation betweenSella Turcica and anterior facial skeleton in Iraqi sample

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