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Register a new userRelationship between the Cant of The Functional Occlusal Plane and the Vertical facial patterns (CBCT scan Study)
العلاقة بين ميلان مستوى الإطباق الوظيفي و نماذج الوجه العمودية باستخدام التصوير الطبقي المحوري المخروطي المحوسب
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Tishreen University ورقة بحثية
Publication date
2015
fields
Dentistry
and research's language is
العربية
Created by
Shamra Editor
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تعمل آلية المعاوضة السنية السنخية ضمن المركب الوجهي الفكي السني على تمويه خلل النمو العمودي، مما يؤدي إلى اختلاف في ميلان مستوى الإطباق الوظيفي. مراعاة هذا الأمر تضمن ثباتاً أكبر لنتائج المعالجة التقويمية. يهدف هذا البحث إلى دراسة إمكانية وجود علاقة بين ميلان مستوى الإطباق الوظيفي (متمثلا بمستويي الإطباق الأمامي و الخلفي) و نماذج الوجه العمودية باستخدام التصوير المقطعي ذي الشعاع المخروطي. CBCT تألفت عينة البحث من 50 صورة طبقي محوري مخروطي محوسب (22 ذكر و 28 أنثى) تراوحت أعمارهم بين 18و 35 سنة و لم يسبق أن خضعوا لمعالجة تقويمية من قبل. تمت دراسة ميلان مستوى الإطباق الوظيفي لهم وفق نموذج النمو العمودي، و تم تطبيق تحليل معامل ارتباط بيرسون لجميع قياسات الدراسة. أظهرت الدراسة أن مستوى الإطباق الخلفي يرتبط مع نماذج النمو العمودية بشكل أوضح من مستوى الإطباق التقليدي. أما مستوى الإطباق الخلفي فأظهر ارتباطا قويا مع نماذج النمو العمودية لدى الإناث.
The dentoalveolar mechanism, within the dentofacial complex, acts to camouflage the vertical base bone discrepancies resulting in differences in the functional occlusal plane cant (FOPC). Considering this, ensures more stable orthodontic treatment results. This research aims to study the possibility of a relationship between the FOPC (represented by anterior and posterior occlusal planes) and the vertical facial growth patterns (VFGPs) using cone beam computed tomography (CBCT). The research sample consisted of 50 CBCTs (22 males and 28 females) aged 18 to 35 years with no prior orthodontic treatments. Their FOPCs were studied according to the VFGPs. Pearson's correlation coefficient was then calculated for all the data obtained. The study showed that the posterior occlusal plane has a clearer correlation to the VFGPs than to the traditional occlusal plane. The posterior occlusal plane showed a strong correlation with the VFGPs in the female sample.
References used
MOLINA, B;LIOPIS, P; FFLORES,M;PUIGDOLLERS, A. Lower incisor dentoalveolar compensation and symphysis dimensions among Class I and III malocclusion patients with different facial vertical skeletal patterns. Angle Orthodontic, U.S.A. Vol. 83, N. 6, 2013, 948-955
ARAT, Z; RÜBENDÜZ, M. Changes in dentoalveolar and facial heights during early and late growth periods: a longitudinal study.Angle Orthodontic, U.S.A. Vol. 75, N. 1, 2005, 69-74
Al-NIMRI, K; BATAINEH, A; ABO-FQRHA, S. Functional occlusal patterns and their relationship to static occlusion. Angle Orthodontic, U.S.A. Vol. 80, N. 1, 2010, 65-71
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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.
It is generally agreed that growth in palatine results from bone formation at the
palatine sutures and lengthening of the alveolar processes, but the extent to which these
two sites contribute to the depth and length of the hard palate remains unso
lved. Hence,
professionals should use quantitative assessments of the hard palate, which allow more
accuracy in the diagnosis and assessment of this structure.
Aim investigating the relationship between the length and depth of the skeletal hard
palatine with facial growth type in adult subjects using CBCT scan.
The research aim for testing the correlations between the morphology of the bone around the apexes of the central incisors and facial type.the sample consist of 59 patient.They were divided into three groups according to their facial Type.the result
is three groups ,19 short face type, 20 norm face type, and 20 long face type patients, aged 19 to 40 years.we have measured many measurement that determine the relationship between the apex of central upper incisor and its surroundings. The measurements were processed using analysis of variance Anova and Mann-Whitney U-tests and (Correlation coefficient )r .We find that at the upper central incisors, In short face type subjects the root apex of the upper central incisors was farther away from the lingual cortex than in the norm face type and long face type. In long face type subjects the root apex of the upper incisors was farther away from the palatal plane than in the norm face type and long face type.
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 treat
ments. 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.
The aim of this research is to investigate the dimensional and positional symmetries
between the right and left condyles ,and the possible asymmetries between the condylar
processes that could be related to the type of growth pattern in adult subje
cts with no
clinical nor radiographic symptoms of TMDs.
Materials and methods: In result of a multistage clinical examination protocol, 14
Caucasian patients with normal growth pattern ,and with no prior orthodontics treatment
were selected (14 females)from 17 to 29 years of age with no clinical signs and symptoms
of TMDs.
The images obtained from the axial and sagittal slices, Cephalometric growth pattern
study was performed. Pearson's Correlation Coefficient and T-test were calculated.
Results :no statistically significant relationship between the measurements of
TMJ(left &right) and the normal growth pattern.
Conclusions:There is no relationship between the morphology of TMJ and normal
growth pattern in adult female orthodontically non-treated .
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