• Journal of Oral Medicine and Pain
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• v.12 no.1
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• pp.63-74
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• 1987

The life changes of TMJ patients were evaluated through the Social Readjustment Rating Scale (SRRS) questionnaire. 61 female TMJ patients and 80 dental new female outpatients were studied at the TMJ Clinics, Department of Oral Diagnosis, PNUH from February to September 1987. The obtained results were as follows; 1. The life change unit (LCU) totals and number of life events in the TMJ patients were significantly higher than those in the control subjects, especially during the 1-6 months before presentation for the hospital. 2. There was no significant difference in the number of the high-scored (over 150 LCU totals) between the TMJ patients and the control subjects. 3. There was a significant difference in LCU totals and life events between the TMJ patients and the control subjects by age, despite no difference in LCU totals and life events between the young and the advanced subgroups. 4. The LCU totals and the number of life events in the TMJ patients over 13-year-school age were significantly higher than those in the control subjects over 13-year-school age and the TMJ patients under 12-year-school age. 5. The married subgroup in the TMJ patients showed no significant difference in LCU totals and life events as compared with the unmarried one. 6. Categorizing life events into 6 items (marital life, health, occupation, family, finances and social), the TMJ patients had the higher frequencies in marital life and occupation than the control.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.25 no.4
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• pp.330-336
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• 1999

Study of dentofacial structure relationships relative to TMJ internal derangement is required to increase the predictability of TMJ internal derangement. But few studies have been reported. The purpose of this study is to reveal any correlation of dentofacial characteristics with TMJ internal derangement by lateral cephalometric analysis. Patients were devided into two groups. (1) Symptomatic patients with TMJ internal derangement (2) Asymptomatic volunteers with no TMJ internal derangement. Twenty symptomatic patients with TMJ internal derangement(7male, 13female) were selected from our clinic and had undergone a standarized clinical examination, panorama, transcranical view, TMJ tomography. Twenty asymptomatic volunteers(9male, 11female) were selected from our clinic with no pain, no limitation of motion. All subjects had undergone lateral cephalometric analysis. The results were obtained as follows. 1. No significant difference between ID and normal group is detected in cranial base. 2. Maxilla position of ID group is located more posterioly than normal group. 3. Mandible position of ID group is located more posteriorly than normal group and facial profile is hyperdivergent. 4. Posterior facial height of ID group is less than normal group thus facial profile is hyperdivergent. The patients, as mentioned, have a high prevalance of ID thus it should be careful in TMJ ID diagnosis and treatment.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.40
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• pp.19.1-19.6
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• 2018

Background: Calcium pyrophosphate dihydrate deposition disease (CPDD) is a rare disease in the temporomandibular joint (TMJ) space. It forms a calcified crystal mass and induces a limitation of joint movement. Case presentation: The calcified mass in our case was occupied in the left TMJ area and extended to the infratemporal and middle cranial fossa. For a complete excision of this mass, we performed a vertical ramus osteotomy and resected the mass around the mandibular condyle. The calcified mass in the infratemporal fossa was carefully excised, and the segmented mandible was anatomically repositioned. Scanning electronic microscopy (SEM)/energy-dispersive X-ray spectroscopy (EDS) microanalysis was performed to evaluate the calcified mass. The result of SEM/EDS showed that the crystal mass was completely composed of calcium pyrophosphate dihydrate. This result strongly suggested that the calcified mass was CPDD in the TMJ area. Conclusions: CPDD in the TMJ is a rare disease and is difficult to differentially diagnose from other neoplasms. A histological examination and quantitative microanalysis are required to confirm the diagnosis. In our patient, CPDD in the TMJ was successfully removed via the extracorporeal approach. SEM/EDS microanalysis was used for the differential diagnosis.

• Journal of Oral Medicine and Pain
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• v.37 no.2
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• pp.125-133
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• 2012

TMJ Osteoarthritis is a degenerative disease caused by overload on joint tissue, and often accompany with local tenderness on the joint, crepitus by mandibular movement, restriction of mandibular movement, and anterior openbite. In general, panoramic radiography, TMJ panoramic radiography, and transcranial radiography are conducted to diagnose osteoarthritis after clinical examination, however, these radiographic evaluations are limited in detecting minute bony changes of early pathologic lesion. The aim of this pilot study was to evaluate the limitation and usefulness of several TMJ imaging techniques, so we compare the findings from clinical examination, plain film radiographs, tomograph, and bone scan from 81 patients with temporomandibular joint disorder. The proportion of patients showing same findings in plain film radiographs, TMJ tomograph, and bone scan was high, however, it is desirable that clinician should conduct phased imaging examinations according to the clinical findings due to the possibilities of false negative findings in diagnosis of osteoarthritis.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.28 no.2
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• pp.141-146
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• 2002

Purpose: Various treatment methods have been utilized for recurrent dislocation of the TMJ (temporomandibular joint). The purpose of this study is to define the effect of the eminectomy with discoplasty that had been performed in patients with TMJ luxation. Materials and Methods: Twenty patients (22 joints), whose diagnosis were TMJ dislocation were selected in 772 patients (871 joints) who had been underwent TMJ surgery between 1988 and 2000. The selected patients were divided into two groups. Group I (12 joints) was the habitual-luxation group which involves the recurrent TMJ dislocation patients. Group II (10 joints) was the open lock-history group which involves the patients who had more than two episodes of TMJ luxation and TMJ disorders. The history of TMJ luxation, maximum mouth opening and other TMJ signs and symptoms before and after surgery were reviewed. Results: In group I, one patient who had been underwent both TMJ operation had a intermittent locking, but it disappeared after post-operative 32 months. In group II, intermittent pain was present in one patient who had bruxism, but it was disappeared by splint therapy. No more TMJ dislocations and other pains were checked in other patients of group I and II. Conclusion: Eminectomy with discoplasty may be used to successfully treat the TMJ habitual luxation accompanied with abnormal condition of the disc-condyle complex.

• Journal of Oral Medicine and Pain
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• v.46 no.4
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• pp.161-164
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• 2021

The foramen of Huschke (FH) or foramen tympanicum is a persistent bony defect connecting the external auditory canal (EAC) to the temporomandibular joint (TMJ). It arises from an incomplete ossification of the tympanic part of the temporal bone that persists after the age of 5. If a herniation exists in the TMJ, otological symptoms may occur. An 80-year-old female patient complained of noise in her left TMJ and otorrhea in her left ear. On her cone beam computed tomography images, there were only degenerative joint disease signs on her left mandibular condyle. However, her computed tomography images revealed that the soft tissue of the TMJ herniate into the EAC. Additional examination was planned for the further evaluation. But the patient no longer visited the hospital due to her systemic health status, and symptoms disappeared spontaneously without any treatments. Usually this type of herniation is very rare, but years of mechanical stress from mastication may result in weakening and widening of the foramen with age. Therefore, although FH is usually congenital, sometimes it may be acquired in the elderly. The treatment plan should be determined in consideration of the patient's symptom level and the patient's general health status. If the clinical symptoms are not severe, no treatment is required.

• Journal of Oral Medicine and Pain
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• v.21 no.1
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• pp.103-113
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• 1996

The author examined the clinical signs and symptoms , routine radiographs, laboratory test and bone scan in 73 subjects with TMJ disorders and studied the responses of clinical test on patients, the distribution of signs and symptoms of joints, the simple uptake rate(SUR) of affected joints , the SUR of subclassified groups of TMJ disorders, active joints of subclassified groups of TMJ disorders and the SUR of joints with noises. The obtained results were as follows : 1. The percentage of joint pain on palpation, joint noises joint pain on function, mandibular dysfunction and active finding of bone scan in aptients with TMJ disorders were higher 2. The SUR was higher in joints affected by joint pain on function, joint pain on palpation, mandibular dysfunction and creptius. 3. The SUR of osteoarthrosis was the lowest. 4. The percentage of active joints were the highest in joints with discdisplacement without reduction, and followed by osteoarthritis, and disc displacement with reduction. 5. The SUR of TMJ showing joint noises only was lower.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.22 no.3
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• pp.360-363
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• 2000

Osteochondroma is a benign tumor that is frequently developed in axial skeleton but rare in TMJ. 61-year old female patient visited local dental clinic with left TMJ crepitus on chewing, trismus and hearing discomforts. She was referred with a tentative diagnosis of TMD. We performed clinical and radiographic examination and could observe large radiopaque lesion at left TMJ. Excisional operation was performed. It was diagnosed finally with a osteochondroma.

• Journal of Oral Medicine and Pain
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• v.44 no.2
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• pp.69-73
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• 2019

Synovial chondromatosis (SC) is an uncommon progressive cartilaginous metaplasia of residual mesenchymal cells in synovial tissue. This disorder usually affects large joints and is rarely observed in the temporomandibular joint (TMJ). SC in TMJ is difficult to diagnose early owing to non-specific clinical symptoms. In this article, we report a patient with SC on the right TMJ, who presented with pain in the right TMJ and progressive occlusal changes, not responsive to conventional conservative temporomandibular disorder treatment for several months. This case emphasizes the importance of an accurate specific diagnosis for TMJ problems before the delivery of any treatment.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.48 no.3
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• pp.155-158
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• 2022

Objectives: The aim of this study was to observe the relationship between impacted mandibular third molars and development of temporomandibular joint (TMJ) disorders. Knowledge of the factors that have an adverse effect on the TMJ is necessary for proper diagnosis, treatment, and prognosis of TMJ disorders. Materials and Methods: The study was performed on 80 patients aged between 20 and 60 years with impacted mandibular third molars, over a period of two months. The patients were examined clinically and radiologically to determine the type of impaction and detect the associated TMJ symptoms or disorders. Results: In the 80 patients, 63.8% (51/80) of TMJ disorders were found in the horizontal group, 46.3% (37/80) in the mesioangular group, 42.5% (34/80) in the distoangular group, and 30.0% (24/80) in the vertical group of impacted mandibular third molars. Conclusion: The study concluded that type of impacted mandibular third molar is factor in the development of temporomandibular disorders.