scholarly journals Analysis of height and width of mandibular condyle and shape of the articular eminence with and without clicking using TMJ radiography

2019 ◽  
Vol 4 (3) ◽  
pp. 99-103
Author(s):  
Cek Dara Manja ◽  
◽  
Daashinta Rajaduray ◽  
Keyword(s):  
Temporomandibular Joint ◽  
Mandibular Condyle ◽  
Average Height ◽  
Glenoid Fossa ◽  
Articular Eminence ◽  
Temporomandibular Joint Dysfunction ◽  
Average Width ◽  
Significant Difference ◽  
Average Form ◽  
Opening And Closing

The temporomandibular joint (TMJ) is the joint of the mandibular condyle with the glenoid fossa of the temporal bone and is the only joint in the head that is responsible for opening and closing movements of the jaw. Cliking is the most frequent symptom indicating temporomandibular joint dysfunction. Several radiographic techniques are used to establish the diagnosis in the examination of the temporomandibular joint. This research was carried out using closed mouth TMJ radiography. The purpose of this study was to determine the height and width of the mandibular condyle and the form of eminence with and without clicking using TMJ radiographs. This research is a descriptive analytic study. The results showed that the average height of the mandibular condyle with clicking was 18,796 mm and without clicking was 22,812 mm. The average width of the mandibular condyle with cliking is 11673mm and without cliking is 11,181mm. The average form of articular eminence with clicking is 36.754 ° and without cliking is 41.081 °. The conclusion of the study was that using the Independent t test there were significant differences in the height of the mandibular condyle and the shape of the articular eminence but there was no significant difference in the width of the mandibular condyle with and without clicking using TMJ radiographs.

scholarly journals Conservative management of bilateral chronic protracted temporomandibular joint dislocation: a case report

2020 ◽  
Vol 6 (8) ◽  
pp. 1538
Author(s):  
Paramjit . ◽  
Neetu Pansotra
Keyword(s):  
Case Report ◽  
Temporomandibular Joint ◽  
Mandibular Condyle ◽  
Glenoid Fossa ◽  
Articular Eminence ◽  
Joint Dislocation ◽  
Excellent Outcome ◽  
Tmj Dislocation ◽  
Temporomandibular Joint Dislocation ◽  
The Ideal

<p>Temporomandibular joint (TMJ) dislocation is a condition in which the mandibular condyle is anteriorly displaced beyond the articular eminence, hence completely out of glenoid fossa which leaves the patient unable to close his/her mouth. Long standing TMJ dislocation persisting for more than a month are the most challenging to treat. The management varies widely, from closed reduction to complicated surgical procedures to reduce the dislocated condyle. Each case of dislocation presents with its own unique features. Since there are no standard rules or conventions for the ideal strategy in different circumstances till date, initial approach should be conservative, preserving surgical treatment for later if needed. This paper presents the experience of conservatively managing a case of long standing (one and half month old) TMJ dislocation under general anaesthesia with excellent outcome.</p><p> </p>

scholarly journals Temporomandibular Joint Osseous Morphology of Class I and Class II Malocclusions in the Normal Skeletal Pattern: A Cone-Beam Computed Tomography Study

Diagnostics ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 541
Author(s):  
Xiao-Chuan Fan ◽  
Lin-Sha Ma ◽  
Li Chen ◽  
Diwakar Singh ◽  
Xiaohui Rausch-Fan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Temporomandibular Joint ◽  
Cone Beam Computed Tomography ◽  
Class Ii ◽  
Class I ◽  
Cone Beam ◽  
Glenoid Fossa ◽  
Linear Measurements ◽  
Significant Difference ◽  
Skeletal Pattern

(1) Background—The aim of the present study was to evaluate the correlation between the temporomandibular joint (TMJ) osseous morphology of normal skeletal pattern individuals with different dental malocclusions by using cone-beam computed tomography (CBCT). (2) Methods—The CBCT images of bilateral TMJs in 67 subjects with skeletal class I and average mandibular angle (26 males and 41 females, age range 20–49 years) were evaluated in this study. The subjects were divided into class I, class II division 1, and class II division 2 according to the molar relationship and retroclination of the maxillary incisors. Angular and linear measurements of TMJ were evaluated and the differences between the groups were statistically analyzed. (3) Results—Intragroup comparisons showed statistical differences for articular eminence inclination, the width of the glenoid fossa, the ratio of the width of the glenoid fossa to the depth of the glenoid fossa, the condylar angle, and the intercondylar angle between the malocclusion groups. The measurements of the glenoid fossa shape showed no significant difference between the left and right sides. Females showed more differences in the morphological parameters of TMJ between the three malocclusion groups than the males. (4) Conclusion—The present study revealed differences in the TMJ osseous morphology between dental class I and class II malocclusions in the normal skeletal pattern.

Signs of temporomandibular joint dysfunction in individuals with different dentition defects and unequal preservation of antagonist pairs of teeth

2021 ◽  
pp. 52-58
Author(s):  
I.S. Redinov ◽  
Ye.A. Pylaeva ◽  
O.O. Strakh ◽  
B.A. Lysenko
Keyword(s):  
Hearing Loss ◽  
Early Diagnosis ◽  
Temporomandibular Joint ◽  
Pathological Process ◽  
Orthopedic Treatment ◽  
Temporomandibular Joint Dysfunction ◽  
Significant Frequency ◽  
System A ◽  
Lower Jaw ◽  
Opening And Closing

As a result of examination and questionnaire of 143 patients who applied for orthopedic treatment of defects of teeth and dental rows, it was found that signs of dysfunction of temporomandibular joint with preserved dental rows are diagnosed in 36—55% cases, and with defects of dental rows — in 45—90% cases. The absence of eighth teeth in the dental row does not significantly change the functional state of the dental-jaw system. A statistically significant frequency of signs of EHS dysfunction has been identified among individuals having terminal dentition defects.In patients with terminal dentition defects, each 3rd patient is diagnosed with cochleovestibular syndrome, and in each 2nd, sounds are determined in the area of VNHS when the lower jaw moves. It has been found that if 15—13 and 12—11 pairs of antagonist teeth are preserved, the signs of dysfunction are determined in 55—45% cases, if the number of teeth having antagonists is reduced to 10—5 (in 90.0% these are patients with preserved 7—8 pairs of antagonist teeth), then the frequency of dysfunction signs increases to 75.0% (t1-3=1.33; t2-3=2.00), in such patients significantly more often — in 75.0% of cases, mandibular deviation is diagnosed when opening and closing the mouth than in persons with a large number of preserved antagonist teeth, respectively 55.0% (t=2.66) and 45.0% (t=3.93) in 1 and 2 groups. Thus, the identification of such signs as crunching, clicking in the joints, hearing loss or tinnitus, suggests the presence of intra-articular disorders in such patients. The deviation of the jaw from its main trajectory when opening the mouth indicates the possible involvement of the masticators muscles in the pathological process. All this requires the dentist to carry out early diagnosis and timely orthopedic treatment.

scholarly journals Is distal segment ostectomy essential for stabilization of the condylar position in patients with facial asymmetry?

2021 ◽  
Vol 43 (1) ◽  
Author(s):  
Ki Eun Hong ◽  
Eun Sup Shin ◽  
Jun Park ◽  
Ji Eon Yun ◽  
Chul Hoon Kim ◽  
...  
Keyword(s):  
Temporomandibular Joint ◽  
Clinical Symptoms ◽  
Mandibular Condyle ◽  
Facial Asymmetry ◽  
Position Change ◽  
Sagittal Split Ramus Osteotomy ◽  
Group I ◽  
Significant Difference ◽  
Before And After ◽  
Condylar Position

Abstract Background The purpose of this retrospective study was to evaluate the postoperative change in the position and stability of the mandibular condyle after bilateral sagittal split ramus osteotomy (BSSRO) and BSSRO with distal segmental ostectomy (DSO) in patients with facial asymmetry using 3D computed tomography. Methods The condyles of the patient diagnosed with facial asymmetry were divided into the deviated side (DS) and the non-deviated side (NDS). Group I, which was treated with BSSRO only, and Group II, which additionally received DSO along with BSSRO, were superimposed on the condyle using the pre-and postoperative 3D CT. The amount of condylar change in anteroposterior displacement, mediolateral displacement, and rotation was measured. The clinical symptoms of temporomandibular joint were also evaluated before and after surgery for each patient. Results Between Groups I and II, there was no statistically significant difference in the anteroposterior condylar position on both DS and NDS. And also, there was no statistical difference between the two groups in the mediolateral change on DS but, statistically significant difference on NDS. The change in the rotation of the condyle was observed to rotate inward from both condylar heads of Groups I and II, and a statistically significant difference was observed between the two groups on both DS and NDS. Moreover, no difference in clinical temporomandibular joint symptoms was observed after surgery in each DS and NDS condyle of the two groups. Conclusions As a result of analyzing the condylar position change of the group treated with BSSRO alone and the group treated with BSSRO and DSO in patients with facial asymmetry, there were statistically significant differences in the mediolateral displacement of NDS and the condyle rotation of NDS and DS. However, the anteroposterior condylar position did not show any difference in the bilateral condyles. In addition, since worsening clinical symptoms of bilateral temporomandibular joint were not observed before and after surgery in both groups, it is concluded that it is not necessary to accompany DSO in patients with facial asymmetry (minimum 3 mm, maximum 7 mm).

Traumatic Temporomandibular Joint Luxation in a Cat and Treatment by Condylar Tethering

1995 ◽  
Vol 08 (01) ◽  
pp. 61-65 ◽  
Author(s):  
T. M. Caporn
Keyword(s):  
Temporomandibular Joint ◽  
Mandibular Condyle ◽  
Frontal Plane ◽  
Articular Eminence ◽  
Polyester Suture ◽  
Temporomandibular Joints ◽  
A New Technique ◽  
The Right ◽  
Joint Luxation ◽  
Temporomandibular Joint Luxation

SummaryThe cat in this report was admitted with mandibular symphyseal separation and jaw malocclusion referrable to luxation of the right TMJ. Radiographs revealed a fracture of the right articular eminence in the frontal plane of the head. Closed reduction, while initially successful, failed to prevent reluxation of the mandible. Polyester suture was used to successfully tether the right mandibular condyle to the zygomatic process of the temporal bone, preventing any reluxation and allowing healing of the fractured eminence.Temporomandibular joint (TMJ) luxation is a relatively commonly encountered injury of the feline jaw. While most temporomandibular joints remain stable once relocated, some will reluxate. A new technique using polyester suture to successfully treat an unstable rostral TMJ luxation, and associated fracture in a cat, is described. Alternative treatments for this condition are briefly discussed.

scholarly journals Efficiency of treatment of patients with muscular and joint dysfunction of the temporomandibular joints

2020 ◽  
Vol 86 (1) ◽  
pp. 94-102
Author(s):  
T. Kostiuk ◽  
A. Kaniura
Keyword(s):  
Temporomandibular Joint ◽  
Sagittal Plane ◽  
Muscle Relaxation ◽  
Pain Syndrome ◽  
Temporomandibular Joint Dysfunction ◽  
Occlusal Splints ◽  
Temporomandibular Joints ◽  
Number Of Patients ◽  
Before And After ◽  
Opening And Closing

The prevalence of dysfunction of the temporomandibular joint, especially in people aged 18-60 years, reached 95-98 % among all dental applications. The course of the pathology is usually hidden, with periodic recurrences and has a long nature, which is accompanied by a decrease in overall quality of life. Treatment of this pathology of the temporomandibular joint is a set of complex therapeutic, orthopedic and psychological measures. The literature describes many ways to treat temporomandibular joint dysfunction, one of the modem ones is the use of occlusal splints, which allow to change the position of the mandible, diagnose and eliminate musculoskeletal dysfunction of the temporomandibular joint. The aim of the study was to determine the effectiveness of treatment of musculoskeletal dysfunction of the temporomandibular joint with occlusal splints according to axiography. 274 patients aged 18 to 65 years were diagnosed with temporomandibular joint pain syndrome before and after treatment. All patients with signs of temporomandibular joint dysfunction before treatment had a violation of the trajectory of the mandible (deviation is 68.7 %, dyslexia is 31.3 %). When opening and closing the mouth, asymmetrical shifts of the lower jaw to the sides of more than 2 mm (deviation from the midline is more than 2 mm) were observed. After treatment with occlusal splints there was an improvement in the trajectory of opening and closing the mouth: the number of patients with a violation of the trajectory decreased by 89.1 %, and the displacement of the mandible during opening and closing the mouth in 92.4 % of patients decreased on average to 0.9 mm. When analyzing the movements of the mandible in the sagittal plane in 79 % of cases, deviations of the trajectory of the mandible were detected. After treatment with occlusive muscle relaxation splints, elimination of violations of the trajectory of the mandible in the transverse plane was noted in 93.4 % of cases, reduction of displacement to 0.9 mm in 78.1 % of patients. The trajectory of the mandible in the sagittal plane improved in 80.1 % of patients, normalization of the position of the mandible relative to the neuromuscular trajectory was achieved in 93.4 % of clinical cases. According to the analysis of parameters, such treatment should be considered effective. Keywords: musculoskeletal dysfunction, temporomandibular joint, clinical dysfunction index, axiography, sagittal articular pathway angle, sagittal incisor pathway angle, Bennett’s angle (movement), duration.

Sign in / Sign up

Export Citation Format

Share Document