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.
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 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 re
sults. 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.
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.
First Cervical Vertebra (Atlas) belongs to the Atlantoaxial joint which
connects the base of the skull to the spine. It plays a highly significant role in the
growth and function of the craniofacial complex. Atlas has function-anatomical
interrela
tionship with the TMJ. That means the Axis is involved in the
morphogenetic and function of the jaws.
Aim To investigate the relationship of Atlas's dimensions with jaws rotation
in adult orthodontically non-treated subjects using CBCT scan.
This study included 96 meningiomas treated between the years of 1999 and
2003 .
The age of patients was between 18-80 years ,with a mean age of 49.16 years.
Females constituted 65.6% of the patients ,while males constituted 34.4%.
Large percent o
f cases was between 4th to 6th decade of age, ( 56, 2% of all
patients).
Signs of raised intracranial pressure dominated the clinical picture
presenting in 62% of patients, while epilepsy was the only symptom in 15%
of the patients . MRI was performed in 81% of patients. The other
patients were diagnosed by CT scan.
Tumors were hemispheral in 74% of patients. The operating microscope
and ultrasonic aspirator were used in 85% of cases.15% of tumors were
removed using the classical methods,
Total removal was achieved in 90% of cases. Clinical improvement was seen
in 60.45 of cases while deterioration was seen in only 5.2% of cases.
Complications included cerebral edema in five patients, and tumor
recurrence in 5.2% of cases. Tumors were benign in 88%.Mortality was
2%.
