The RME force is not only concentrated on widening the maxilla,
it is concomitant changes occur in craniofacial sutures, from here
the need for this study was originated.
Aim of the study: To investigate the immediate effect of rapid
maxillary expansion on the spheno-occipital Synchondrosis in
children using cone beam computed tomography.
This study was carried out aiming to investigate the accuracy of
measurements , differences in linear and angular measurements of
the craniofacial complex using both the two and three dimensional
method of measuring in patients with different kind
s of
malocclusion ; and also to compare each kind of malocclusion to
the others. The sample of the study consisted of 40 patients ,
divided into three groups – a group for each skeletal malocclusion
, Cone Bean Computed Tomography (CBCT) was performed for
each patient , then two dimensional radiographs were derived from
the CBCT ; after performing the measuring , collecting the results
and analyzing them statistically.
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.
The need to repair dentoalveolar atrophy and bone defects has resulted in
developing techniques and sources of graft materials، and the use of autogenous bone grafts continues to
represent the ‘gold standard’ in reconstructive surgery of the oral a
nd maxillofacial region.
This study aims to assessment the complications of autogenous bone harvesting from retromolar region of
mandible by trephine burs.
