Chondrosarcoma of the temporomandibular joint: case report

Chondrosarcoma of the head and neck region is a rarely encountered tumor. Aggressive surgical excision offers the best chance for cure. In our case, combined diagnostic techniques consisting of fine needle aspiration (FNA), computed tomography (CT), and magnetic resonance imaging (MRI) made an accurate preoperative assessment possible and greatly influenced the treatment provided.     

Correlations between occlusal dysfunctions and temporomandibular joint disorders

The occlusal problems and the temporomandibular disorders are the most frequent aspects which we often find to the patients with the dysfunctional syndrome of the stomatognathic system. This study tries to establish the correlation between these two kinds of dysfunctions and to find (if it exists) a direct proportional relation between them. For this purpose we studied 8 cases who had been diagnosed as having the dysfunctional syndrome of the stomatognathic system on the base of the clinical symptoms, tomographs and CT. The results of the study proved that an occlusal dysfunction can affect the temporomandibular joint and vice versa, because all the component parts of the stomatognathic system are in a close relationship and they influence each other, but these results didn't indicate a direct proportional relation between these two kinds of dysfunctions.     

Pigmented villonodular synovitis of the temporomandibular joint: a case report.

The eighth known case of pigmented villonodular synovitis of the temporomandibular joint is presented. Pigmented villonodular synovitis is a benign but locally destructive lesion of obscure cause. In the temporomandibular joint, this lesion is characterized by the insidious onset of a mildly symptomatic preauricular mass. The treatment of choice is complete excision.     

Synovial sarcoma of the temporomandibular joint area: report of a case.

Synovial cell sarcoma is a relatively rare tumor of mesenchymal origin. It is a high-grade neoplasm that microscopically shows a monophasic or biphasic cellular pattern and includes epithelial features as well as supporting tissue features. Surgical excision is the primary mode of treatment. Postoperative radiotherapy and chemotherapy also is seen to be helpful. Between 3% and 10% of cases originate in the head and neck. A review of relevant literature shows less than 10 cases of synovial cell sarcoma of the temporomandibular joint area reported in the English literature. We report an additional case of biphasic synovial cell sarcoma arising in the temporomandibular joint area, which caused ear pain, tinnitus, and hearing loss, and we further discuss the clinical features, histopathology, differential diagnosis, and treatment modality.     

Arthroscopic laser surgery and suturing for temporomandibular joint disorders: technique and clinical results

A new surgical technique has been developed to combine arthroscopic laser surgery with suturing to be used clinically in the treatment of temporomandibular joint disorders. This new technique involves the use of a recently invented double-channel cannula needle scope to visualize the lesion. Subsequently, we combined Nd-YAG laser with suturing in the cavity in order to treat the area around the intraarticular wall. The primary use of arthroscopic laser surgery is for treatment of lesions in the inner wall of the joint cavity. In this article, we give an outline of both the arthroscopic laser surgery and the arthroscopic suturing as well as the clinical, postoperative results of these cases.     

Ⅳ型胶原在颞下颌关节紊乱病中的表达

目的 探讨颞下颌关节紊乱病病变与Ⅳ型胶原之间的关系.方法 应用链菌素亲生物素-过氧化酶连结法检测19例颞下颌关节病变关节盘和盘后组织中Ⅳ型胶原的表达.结果 19例颞下颌关节紊乱病患者中,不可复性盘前移位3例,盘前移位伴关节盘穿孔5例,骨关节病伴关节盘穿孔11例.Ⅳ型胶原主要存在于病变关节盘和双板区的血管基底膜.其中骨关节病伴关节盘穿孔的阳性反应最为明显.6例在软骨细胞周围有弱阳性反应.结论 Ⅳ型胶原在病变颞下颌关节盘和盘后组织的血管基底膜以及软骨细胞周围可出现表达,Ⅳ型胶原免疫组织化学的染色强度与病变的严重程度有一定关系.     

Vascular malformation of the temporomandibular joint: report of a case and review of the literature.

The diagnosis and treatment of vascular anomalies is extremely challenging because of inconsistent terminology and classification systems, as well as nonspecific clinical and radiological findings. We report a vascular malformation that was treated successfully via resection, and reconstructed using a custom-made temporomandibular joint fossa and condylar prosthesis by TMJ Concepts. The available pertinent literature is also reviewed.     

Parasymphyseal fracture with an associated temporomandibular joint dislocation: case report.

A case of traumatic mandibular fracture with associated unilateral anterior dislocation of the temporomandibular joint in a child is described. Although anterior dislocation is common, this combination of fracture and separate dislocation to our knowledge has not been reported in a young child. The unusual management required in this case is discussed.     

Ultrasonography of the temporomandibular joint: comparison of findings in patients with rheumatic diseases and temporomandibular disorders. A preliminary report.

OBJECTIVE: The objective of the study was to compare findings from ultrasonography (US) of the temporomandibular joint (TMJ) in patients with rheumatoid arthritis (RA), psoriatic arthritis (PsA), and temporomandibular disorders (TMD). STUDY DESIGN: US assessment of the temporomandibular joints was bilaterally performed in 68 patients (22 with RA, 11 with PsA, and 35 with TMD). All the TMJs were assessed for the presence of disc displacement, effusion, and changes of the condylar profile, and the prevalence of such abnormalities was compared across the 3 groups of patients. To confirm generalizability of results, US findings were also compared with those of magnetic resonance (MR), taken as the standard of reference. RESULTS: Prevalence of disc displacement and changes in condylar profile were similar between patients with rheumatic diseases and temporomandibular disorders, while effusion was significantly more present in TMJs of TMD patients. Sensitivity of US to detect TMJ abnormalities was acceptable, while specificity was low for condylar alterations. CONCLUSIONS: Temporomandibular joint involvement in patients with rheumatic diseases seems to be similar to that described in subjects with temporomandibular disorders. Ultrasonography confirmed to be an accurate technique to detect disc displacement and effusion within the temporomandibular joint, but not to detect condylar abnormalities.     

Interposition arthroplasty in post-traumatic temporomandibular joint ankylosis: A retrospective study

Temporomandibular joint ankylosis which is most frequently caused by trauma, presents with restriction in mouth opening in early stages and if children are the victim and not treated early, it presents with growth retardation of the involved mandibular side. Various methods are available for surgical correction. We have reviewed our experience with the efficacy of different interpositional materials in post-traumatic cases in our set up with special reference to temporal fascia over last three years. Twenty seven patients with history of trauma, mostly fall from height, have been studied. They were evaluated clinically and by computed tomography (CT) scan, orthopantogram and x- ray lateral oblique view. The most common age group was 10-15 years with mean 12.5 years and male to female ratio 1:2. Preoperative mouth opening (inter incisor distance) was 1-2 mm in 17 cases and 2-4 mm in 10 cases. We have used temporalis fascia in nine, costochondral graft in seven, silastic sheets in five and T-plates in six cases. Post-operatively, adequate mouth opening of 30-50 mm was observed in six months follow-up and more than 50 mm at one year follow up in 21 cases out of which nine cases have interpositional material as temporalis fascia alone. The postoperative period was uneventful in all cases and none required re-operation for recurrences. We conclude that interpositional arthroplasty, especially with pedicled temporal fascia, is the best method to prevent recurrences and establish good mouth opening and full range of jaw movements.     

Immediate changes in temporomandibular joint opening and pain following vibration therapy: a feasibility pilot study

Objective

The purpose of this pilot study was to determine the scientific and process feasibility in an effort to direct future larger trials.

Methods:

Scientific Feasibility: Twelve subjects were randomly allocated to an intervention and a control group. The intervention protocol consisted of intraoral vibration therapy on the muscles of mastication bilaterally for a period of 1 minute per muscle. Process Feasibility: Several feasibility outcomes were examined including recruitment and retention rates and consent.

Results:

Scientific Feasibility: Large effect sizes were generated for both mouth opening and VAS in favour of the intervention group. Process Feasibility: a recruitment ratio of 2.3 respondents to 1 participant was determined, along with a retention to loss ratio of 13:1 and a consent to loss ratio of 12:0.

Conclusion:

Scientific Feasibility: The scientific results should be interpreted with caution due to the small sample sizes employed. The study seems to support the scientific feasibility of a future larger single treatment trial. Process Feasibility: Recruitment and retention rates and ratios seem to support future studies. Utilizing the feasibility results of the current study to direct a future larger multiple treatment trial consistent with other comparable TMD studies however is limited.