Objective: The aim of this study was to determine palatal and maxillary arch width
changes during MBT PEA with maxillary first premolars extraction treatment in patients
with Class II division 1 malocclusion.
Material and Methods: Dental casts of
24 Class II division 1 patients (8 males and 16
females) were evaluated. The minimum age of the subjects at the beginning of treatment
was above 16 years with mean age 02.02± 2.82. All patients were treated with extraction of
the maxillary first premolars and MBT PEA. Pre- and post-treatment maxillary and palatal
(inter-canine and inter-molar) widths were measured using a digital calliper of 0.01
accuracy. Paired samples t-test was used to evaluate the treatment changes within total
sample and within males group and females group. Differences between males and females
were tested using independent samples t-test.
Results: At the end of treatment, maxillary and palatal inter-canine widths increased
significantly (P>0.001).The maxillary inter-molar width increased but the values were
statistically insignificant (P<0.05). The palatal inter-molar width increased significantly
(P>0.01). No significant differences were observed between males and females.
Conclusions: Class II division 1 patients treated with extraction of maxillary first
premolars had tendency for an increase in palatal and arch width during treatment except
maxillary inter-molar width. It seems that a more thorough assessment and investigation
including pretreatment arch shape and factors related to anchorage should be carried out.
The asymmetric face is common so that increased interest in it .there are different ways to
assess the asymmetry. Computed tomography is an accurate way that enable the examiner for
reading the face at three planes ,and present three-dimensional in
formation on the cranial
mandibular Complex whereas (3D) analysis is essential for making a precise diagnosis of
craniofacial morphology. Aim : This research aims to study the asymmetric at the facial patterns
malocclusion (class I. Class II) using CT . the research sample consists of 48 CT image (male 23
and female 15)their ages ranged between 18 and 35 years old and did not receive any orthodontic
treatment before, and devided into two groups according to the malocclusion ptterns(17 class II, 31
class I ) . Analysis was performed T. student test then calculated for all the data obtained . This
study showed that a significant difference between the class I and class II malocclusion in each of
the right and left.
The aim of this study was to investigate the relationship
between cervical vertebral posture in patients with skeletal Class II
malocclusion by using lateral cephalometric radiographs were taken
by natural head position.
This study aims to determine the skeletal problems in
sagittal plane in patients with congenital hypodontia. In this
study, 96 cephalograms were taken of Syrian coastal father
and mother. The sample was divided according to gender
and to location
of the missing teeth. The angles SNA, SNB
and ANB were studied.
This study aims toassesst patient’s satisfaction with partial dentures fixed by two
different extracoronal attachments in the mandibular of cases Kennedy class II .
It used a sample consisting of 10 patients have lost bilateral in the mandibular we
re
prepared two abutments (first and second premolar ) and compensation as follows : the
right side of the patient by rigid attachment type MKI and the left side by resilient
attachment type ASC 52 , then to assess patient’s satisfaction for each of the two types of
attachments was conducted after a month and 6 months on the use of dentures using by
scale 0 5 (0 = excellent ,1 = very good, 2 = good, 3 = middle , 4 = bad, 5 = very bad) ,
so that the assessment in terms : general satisfaction included (aesthetics, speech and
retention ), comfort , the ability to chew ,easy removal denture , deposition foods under the
removable part .
The results showed , no difference statistically significant between tow attachments
in terms of general satisfaction included (aesthetics, speech and retention) ,comfort , the
ability to chew ,easy removal denture after one month and 6 months to use the dentures
while showing difference statistically significant between tow attachments after one month
and 6 months to use the dentures , when the level significance p< 0.05 .
Class II malocclusion is a common clinical problem among white Caucasian population and its transverse component is a critical aspect of a functional and stable occlusion. The size and shape of the arches have considerable implications in orthodontic
diagnosis and treatment planning, affecting the space available, dental esthetics, and stability of the dentition. Hence , it is important to study the alveolar arch width in this group of patients using the wide possibilities of cone beam computed tomography of evaluating real anatomy , true-to-scale images without distortions or superimpositions, and the selection of the desired sections.Objective:To evaluate the width of maxillary and mandibular alveolar arches in skelatal Class II adults compared to skeletal class I using cone beam computed tomography. Materials and methods: thirty-two subjects with skeletal Class II relationship and 10 subjects with skeletal Class I who were ordinary undergoing CBCT scan for non-orthodontics nor for otorihnolaryngology purpose were selected to measure the maxillary and mandibular alveolar width of first premolar and first molars.Independent samples’ t-test was calculated. Results:No statistically significant differences were found of alveolar widths between skeletal Class II and Class I subjects in both maxillary and mandibular widths of molar and premolar regions. Gender had no statistically significant effect in the results of the study. Conclusion :There is no differences in alveolar width between adults with skeletal Class II and Class I relationships, so the transverse discrepancy in skeletal Class II when exsists , it is more probably not originated from the alveolar base.
The study aimed to Compare the effect of combination Platelet Rich
Plasma with bovine derived xenograft and bovine derived xenograft
alone in treatment of human class II furcation defects in mandibular
molars. Twenty systemically healthy patients,
aged 32 to 58 years with
chronic periodontitis participated in the study . Each patient had 2 buccal
mandibular class II furcation defects (first or second molars) were
randomizely treated either with : bovine – derived xenograft with
Platelet – Rich plasma, or with bovine - derived xenograft alone.
functional treatment of skeletal class II malocclusion is one of the most
important treatment options in mixed dentition. The aim of this research is to evaluate the effectiveness of
two of the most popular functional appliances in daily orthodonti
c practice which are: Schwarz double
plate and twin block, and to compare the effectiveness of these appliances.
Orthodontic treatment is considered successful only if optimal esthetic and
function are achieved.The objective of this study was to compare facial soft tissue profile changes
produced by a new technique (elastic forces based on skeletal anchorage
mini-plates) with changes
produced by conventional class-II elastic forces.
Success clinical attempts have been carried out to support fixed functional
appliances by using skeletal anchor plates placed in the symphysis to avoid mandibular incisors
protrusion.
