scholarly journals A study of the mandibular movement with multiple stroboscope apparatus. The mandibular condyle movement during the (a:) sound was pronounced.

1984 ◽  
Vol 28 (3) ◽  
pp. 428-443
Author(s):  
Shinya Nagashima
Keyword(s):  
Mandibular Condyle ◽  
Mandibular Movement ◽  
Condyle Movement

scholarly journals Surgical Reduction of Symphysis Fracture and Spontaneous Repositioning of the Mandibular Condyle: A Case Report

2021 ◽  
Vol 1 (3) ◽  
Author(s):  
Claudemir de Carvalho
Keyword(s):  
Physical Examination ◽  
Maxillofacial Surgery ◽  
Mandibular Condyle ◽  
Mouth Opening ◽  
Dental Occlusion ◽  
Glenoid Cavity ◽  
Mandibular Movement ◽  
Mandibular Symphysis ◽  
Surgical Reduction ◽  
Condyle Fracture

The condylar process is a more fragile area, which is usually fractured by indirect trauma. The objective of this study is to report the case of a 10-year-old patient who presented to the Maxillofacial Surgery and Traumatology Service of the Regional Hospital of Vale do Paraíba, in Taubaté-SP, Brazil. Physical examination revealed limited mandibular movement with painful symptoms, crossbite, and upper incisor avulsion. A face tomography showed a fracture of the mandibular symphysis (right side) and a fracture of the left condyle. Surgical reduction of the mandibular symphysis fracture was performed. After exposure and reduction of bone segments, maxillomandibular block, rigid internal fixation and conservative treatment for condyle fracture were performed. A soft liquid diet and weekly outpatient follow-up was adopted for the first two months. After 15 days of surgery, the patient had mild edema, slight limitation in mouth opening, sutures without dehiscence and without signs of infection. In the first control tomography, the treated fracture was adequately reduced and the fractured condyle remained with medial displacement in the glenoid cavity. After one year, on physical examination, the patient presented satisfactory dental occlusion, preserved mandibular movements and no signs of nerve damage. The tomography showed the fracture consolidated, and the left mandibular condyle well positioned in the glenoid cavity. After two years, the third tomography was performed, showing remodelling of the left mandibular condyle.

scholarly journals Condylar fracture in a paediatric patient undergoing conservative and functional treatment: Case report

2021 ◽  
Vol 10 (4) ◽  
pp. e58510414429
Author(s):  
Guilherme Borsato Gomes ◽  
Leticia Sassaki Correia ◽  
Fernanda Schimidt de Freitas ◽  
Vinicius Almeida Carvalho ◽  
Cecília Luiz Pereira Stabile ◽  
...  
Keyword(s):  
Maxillofacial Surgery ◽  
Mandibular Condyle ◽  
Facial Asymmetry ◽  
Fracture Site ◽  
Tissue Growth ◽  
Dental Occlusion ◽  
Mandibular Movement ◽  
Long Term Effects ◽  
Condylar Fracture ◽  
Total Recovery

Trauma to the jaw can lead to fracture of the mandibular condyle. Prevalence in children is low and treatment should focus on possible long-term effects on facial bone and soft tissue growth. Trauma can result in dysfunction, facial asymmetry, mandibular retraction, dysfunction and stiffness of the temporomandibular joint. Clinical examination and imaging tests are essential to obtain an accurate diagnosis and an effective treatment to avoid possible complications. Treatment can be surgical or non-surgical, but non-surgical treatment is the method of choice in most cases. The aim of this study is to report a case of mandibular condylar fracture in a pediatric patient who underwent conservative and functional care who, with adequate monitoring by the Maxillofacial Surgery and Traumatology team and family, showed complete remodeling of the fractured bone and total recovery of the dental occlusion. Treatment in pediatric patients through conservative management allows an adequate range of mandibular movement and remodeling at the fracture site, but patient and family adherence to treatment is very important to obtain good results.

Comparison of the diagnostic accuracy of Ultrasonography and CBCT for detection of mandibular condyle erosion (an in-vitro study)

2021 ◽  
Vol 15 (5) ◽  
pp. 1661-1665
Author(s):  
Yasaman Kheirandish ◽  
Mehrdad Panjnoush ◽  
Shabnam Mohammed Charlie ◽  
Elham Romoozi
Keyword(s):  
Temporomandibular Joint ◽  
Mandibular Condyle ◽  
In Vitro Study ◽  
Temporomandibular Joint Disorders ◽  
The Body ◽  
Articular Disc ◽  
Mandibular Movement ◽  
Adequate Treatment ◽  
Bone Changes

Temporomandibular joint (TMJ) is one of the most important, unique and structurally has the highest complex synovial system in the body (1, 2). TMJ, encompassing the temporal bone, mandibular condyle and articular disc, is a diarthrodial joint. As a collective form, Temporomandibular Joint Disorders (TMD) is often with multifactorial etiologies, and these diseases can more commonly affect the soft-tissue components of the TMJ including the articular disc and posterior attachment, the osseous components of the TMJ and also the related muscles (3, 4). The most common cause of the regional orofacial pain of non-dental origin is a result of TMD. Additional symptoms may include TMJ sounds such as clicking, pumping, limited or asymmetric mandibular movement (5). As TMJ is covered by a layer of fibrocartilage, unlike other joints in the human body, the mandibular condyles can be damaged due to cartilage degeneration. In addition, arthritis can also be initiated because of the particular dynamics in the maxillofacial area (6). TMD's are frequently associated with degenerative bone changes which can involve the bone structures of the TMJ such as erosion, flattening, osteophytes, subchondral bone sclerosis and pseudocysts (7). To correctly diagnose the dysfunctions associated with the disease and for adequate treatment planning Knowledge about these bone changes is fundamental (8).

scholarly journals Mandibular Movement Restoration in a Child with Bilateral Coronoid Hyperplasia: A Case Report

2016 ◽  
Vol 4 (2) ◽  
pp. 293-295 ◽  
Author(s):  
Danica Popovik Monevska ◽  
Alberto Benedetti ◽  
Vladimir Popovski ◽  
Slave Naumovski ◽  
Aleksandar Grcev ◽  
...  
Keyword(s):  
Case Report ◽  
Surgical Treatment ◽  
Tomographic Reconstruction ◽  
Nasotracheal Intubation ◽  
Mandibular Condyle ◽  
Mouth Opening ◽  
Coronoid Process ◽  
Mandibular Movement ◽  
Posterior Portion ◽  
Intraoral Approach

BACKGROUND: Coronoid process hyperplasia is an uncommon finding, characterized by an enlargement of the coronoid process, causing a mechanical obstacle by its interposing in the posterior portion of the maxilla or zygomatic arch.CASE PRESENTATION: The article presents a case report of a bilateral coronoid process hyperplasia in a 3-year-old girl demonstrated with inability to open the mouth and restricted jaw movement. Panoramic x-ray and 3-dimensional computed tomographic reconstruction showed bilateral elongation of the coronoid processes associated with deformation of the mandibular condyle with no involvement of the articular space. A coronoid resection by intraoral approach was done, followed by an aggressive physiotherapy. A considerable improvement in mouth opening of 30 mm was achieved. We strongly suggest early surgical treatment of coronoid hyperplasia to recover morphology and function consequently to reduce skeletofacial deformities in young patients.CONCLUSIONS: The article presents a clinical and surgical case of bilateral coronoidectomy in a 3-year-old girl, with retrognathic mandible. The diagnosis of bilateral coronoid process hyperplasia was confirmed, and the surgical treatment was under general anesthesia, with nasotracheal intubation guided by a nasofiber endoscope, using an intraoral approach.

Mandibular condyle movement during mastication of foods

2003 ◽  
Vol 30 (6) ◽  
pp. 592-600 ◽  
Author(s):  
O. Komiyama ◽  
T. Asano ◽  
H. Suzuki ◽  
M. Kawara ◽  
M. Wada ◽  
...  
Keyword(s):  
Mandibular Condyle ◽  
Condyle Movement

EMG Activities of Two Heads of the Human Lateral Pterygoid Muscle in Relation to Mandibular Condyle Movement and Biting Force

2000 ◽  
Vol 83 (4) ◽  
pp. 2120-2137 ◽  
Author(s):  
Katsunari Hiraba ◽  
Kazuto Hibino ◽  
Kenji Hiranuma ◽  
Takefumi Negoro
Keyword(s):  
Sagittal Plane ◽  
Mandibular Condyle ◽  
Maximum Activity ◽  
Emg Activity ◽  
Lateral Pterygoid Muscle ◽  
Jaw Movements ◽  
Teeth Clenching ◽  
Articular Disk ◽  
Jaw Position ◽  
Condyle Movement

Electromyographic (EMG) activities of the superior (SUP) and inferior heads (INF) of the lateral pterygoid muscle (LPT) were recorded in humans during voluntary stepwise changes in biting force and jaw position that were adopted to exclude the effects of acceleration and velocity of jaw movements on the muscle activity. The SUP behaved like a jaw-closing muscle and showed characteristic activity in relation to the biting force. It showed a considerable amount of background activity (5–32% of the maximum) even in the intercuspal position without teeth clenching and reached a nearly maximum activity at relatively lower biting-force levels than the jaw-closing muscles during increment of the biting force. Stretch reflexes were found in the SUP, the function of which could be to stabilize the condyle against the biting force that pulls the condyle posteriorly. This notion was verified by examining the biomechanics on the temporomandibular joint. The complex movements of the mandibular condyle in a sagittal plane were decomposed into displacement in the anteroposterior direction (Ac) and angle of rotation (RAc) around a kinesiological specific point on the condyle. In relation to Ac, each head of the LPT showed quite a similar behavior to each other in all types of jaw movements across all subjects. Working ranges of the muscle activities were almost constant (Ac <3 mm for the SUP and Ac >3 mm for the INF). The amount of EMG activity of the SUP changed in inverse proportion to Ac showing a hyperbola-like relation, whereas that of the INF changed rather linearly. The EMG amplitude of the SUP showed a quasilinear inverse relation with RAc in the hinge movement during which the condyle rotated with no movement in the anteroposterior direction. This finding suggests that the SUP controls the angular relationship between the articular disk and the condyle. On the other hand, the position of the disk in relation to the maxilla, not to the condyle, is controlled indirectly by the INF because the disk is attached to the condyle by tendinous ligaments.

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