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Register a new userThe Orthognathic Surgery and its Effects on Temporomandibular Joint
الجراحة التقويمية و تأثيرها على المفصل الفكي الصدغي
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عيسى وهبة( باحث )
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كل قطع عظمي و كل تحريك و تبديل جراحي لعظام الفكين يؤثر في كامل المركب الوجهي الفكي و من ثم في المفصل الفكي الصدغي الذي يشكل أحد مكوناته الأساسية . في هذا البحث أجريت دراسة لأثر عمليات التقويم الجراحي في المفصل الفكي الصدغي و أظهر دور الحفاظ على وضع اللقمة في العلاقة المركزية على نتائج العمل الجراحي . و كذلك شملت الدراسة ذكر العوامل المساعدة في استقرار النتائج.
Every osteotomy and every surgical correction of dentofacial deformity has influences on the whole orofacial system including the TMJ. This study aimed evaluate the effect on the TMJ after the orthognathic surgery (bimaxillary osteotomy).Furthermore, a comparison was made between the results obtained by bimaxillary osteotomy without condylar positioning and the pre-operation centric position of the condyle.
References used
Axhausen G :Corrigierende Osteotomie der Maxilla . Dtsch Z Chir 248,515-522
Ellis III E: Condylar positioning devices for orthognathic surgery: are they necessary? J Oral Maxilloface Surg 52,1994, 536-552
Ellis III E :Bimaxillary surgery using an intermediate splint to position the Maxilla. J Oral Maxilloface Surg 57,1999,53-56
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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 .
The aim of this study is to evaluate the clinical outcomes of
treatment of temporomandibular joint disorders via injection HA &
PRP. The sample consisted of 24 patients with TMD.
Mandible articulates with the cranium via the TMJ. All the components of the TMJ,
including the TMJ disc, seem to be associated with altered characteristics of the
craniofacial complex and its growth. However, the exact role of the TMJ disc thickne
ss
during the process of the facial growth is not clear yet.
Aim: The aim of this study is to investigate the association between the TMJ disc
thickness and the facial growth determined according to Jarabak in adult male subjects
with no clinical or MRI symptoms of Temporomandibular Joint Disorders.
Articular eminence participates in the functional formation of the posterior guidance of the mandibular movement, it's the anatomical point where functional stresses can result in alteration of the contours of the articular eminence, and its inclinat
ion respectively, Hence, orthodontists need to know the relationship between the articular eminence Inclination and the mesiodistal inclination of upper and lower incisors to achieve more stable results of orthodontics treatment. Aim The aim of this research is to investigate the relationship of upper and lower incisors mesiodistal inclination with the inclination of the articular eminence in class I skeletal occlusion in adult subjects with no clinical nor radiographic symptoms of TMDs. Materials and methods: In result of radiographic study and a multistage clinical examination protocol, 46 Caucasian patients with no prior orthodontics treatment were selected (19 males, 27 females) from 16 to 27 years of age with skeletal class I occlusion and no clinical or radiographic signs and symptoms of TMDs. Furthermore, cephalometric evaluating of the Inclination of the articular eminence and the mesiodistal inclination of the incisors was performed; Pearson's Correlation Coefficient was calculated to investigate the relationship of articular eminence Inclination with the mesiodistal inclination of the incisors. Results: no significant relationship between incisors mesiodistal inclination and the articular eminence inclination was found. Conclusions the steepness of the articular eminence appears not to vary with mesiodistal inclination of the incisors in skeletal class I occlusion adults with no clinical and radiographic symptoms of TMDs
articular eminence Inclination
incisors mesiodistal inclination
skeletal class I occlusion
clinical and radiographic asymptomatic TMDs orthodontics patients
ميلان المنحدر المفصلي
الميلان الأنسي الوحشي لمحاور القواطع
إطباق صنف أول هيكلي
مرضى تقويم بدون أعراض سريرية وشعاعية لإضطرابات المفصل الفكي الصدغي
المزيد..
The built environment has an internal and surrounding effect to the health and life of organisms where it
spends most of its time in that environment. With the growing role of the built environment in everyday's
life, several negative aspects have
appeared and & have affected those organisms, these aspects have
represented main factors: From one hand is what affects those objects from diseases linked to buildings
while from the other hand is the close association with the growth and production rates.
From this point many ideas and architectural theories have appeared while it derived roots of ancient
civilizations and previous experience has been supported by modern thought, but these ideas and theories
failed to solve some problems of modern technology, such as the negative effects of electromagnetic fields
and radiative forcing on living organisms; all of what has been stated has forced the architects to have a
second thought concerning these theories by trying to find out several other solutions and concepts to the
design system' and find simple ways to help in the design and evaluation process while improving its
performance.
From this point the Biogeometry science "Vital Shapes Engineering Science" which describes the
geometric shapes that organizes the place's energy (Electromagnetic fields in the space) and re-enforce the
energy balance of the organisms contained in it or around it, this leads to raise the efficiency of the objects
on one hand and increases the growth rates and production at those objects on the other hand.
The search could define the concept of an energy surrounding with the concept of the Biogeometry
engineering from one hand, while the impact of these energy & the Biogeometry forms the plants from
another. hence we have to clarify the direct influence of the Biogeometry forms on the plants life,
eventually and after proving that effect, it is proved that different Beogaomitri forms leads to different
effects caused by those plants.
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