The purpose of this study was to investigate the waveform and electrosonographic characteristics of sounds emanating from internal derangement of the temporomandibular joint (TMJ). TMJ sounds were ecorded from 10 joints of normal people (NP), 10 joints from patients with anterior disc isplacement with reduction (DDR) and 20 joints from patients with anterior disc displacement without reduction (DDNR). The sounds were analyzed through fast Fourier transfer methods to observe their waveforms and electrosonographic characteristics. The observations were then used in differentially diagnosing internal derangement. Wave pattern and electrosonography (ESG) differed among the NP, DDR and DDNR groups. There was very little difference in frequency between the sounds from DDR and DDNR, but the amplitude of the DDR sounds was higher than those of DDNR and NP. The sensitivity and specificity of ESG diagnosis for DDR were 77.2% and 93.3%, respectively, while for DDNR they were 81.6% and 64.7%, respectively.

To measure the activity of oxygen free radicals and the level of antioxidant enzyme superoxide dismutase (SOD) in the synovial fluid (SF) of the temporomandibular joints (TMJs) of patients with temporomandibular disorders (TMD). Methods: Thirty-two patients were divided into 3 subgroups: anterior disc displacement with reduction, anterior disc displacement without reduction, and osteoarthrosis. Six healthy volunteers served as controls. A pumping procedure was used to take SF from the superior TMJ space. The concentration of lipid peroxidation products was assessed by means of the thiobarbituric acid reaction, and the level of SOD was assessed with spectrophotometry. Results: SF levels of lipid peroxides (LPO) in the control and patient groups were 0.010 (

Purpose: A new operating method was used to treat traumatic temporomandibular joint (TMJ) ankylosis, to restore the structure of the TMJ, to improve the secondary maxillofacial deformity, and prevent recurrence of TMJ ankylosis. Patients and Methods: Thirty-six patients (20 females, 16 males; aged 5 to 54 years old) with TMJ ankylosis type II or III of 1 to 16 years’ duration, with a maximal mouth opening from 0 to 15 mm preoperatively participated. The new method was to separate bony fusion between condyle and glenoid fossa, remove the condylar fragment that displaced medially or roinferiorly, mobilize the remains of the disc over the condylar stump and suture it with rticular capsule, and shave the surface of the condylar stump and glenoid fossa smooth. Results: Follow-up was performed from 1 to 7 years postoperatively in 21 cases. No recurrences occurred in patients whose TMJ disc was retained during operation. Patients had an average maximal mouth opening of 33.7 mm postoperatively. An 11-year-old patient showed an improved facial symmetry after surgery. Conclusion: By restoring the normal structure of the TMJ and preservation of the disc, recurrence of traumatic TMJ ankylosis and facial deformity in younger patients can be prevented.

The aim of this study was to discover the clinical value of the tumour marker AMDL DR-70 in a group of patients with cancer of the tongue. Serum concentrations of AMDL DR-70 were estimated by enzyme linked immuno-sorbent assay in 52 patients with carcinoma of the tongue and compared with 40 controls and 42 patients with benign lesions in the tongue. Thirty-nine patients with carcinoma of the tongue had results above 6 mg/L (75%), compared with 3/40 (7%) in healthy controls and 4/42 (10%) in those with benign tumours. The concentration of AMDL DR-70 in serum correlated significantly with 3-year survival.

目的评价涎腺内镜对慢性阻塞性涎腺炎的诊治价值。方法选择自2003年1月至6月到武汉大学口腔医学院涎腺专科门诊因涎腺区反复肿胀就诊的患者25例（34侧）行涎腺内镜术。其中腮腺l9例27侧，颌下腺6例7侧；女性l6例，男性9例；年龄l7～77岁，平均年龄43.72岁。22例术前拍摄涎腺造影片，3例颌下腺结石病例术前加拍下颌横断咬合片。结果常规x线检查显示：颌下腺导管阳性结石3例；慢性阻塞性涎腺炎22例。x线片显示：腮腺、颌下腺主导管及部分分支导管不均匀增粗。涎腺内镜检查显示：①导管内有不同程度的纤维样物质，呈絮状、片状附着管壁；②导管存在程度不一的狭窄；③导管壁片状充血，部分可见点状、斑点状出血；④黏液栓、脓栓；⑤导管内腔变形呈不规则状，管壁向外突起形成憩室；⑥阳性、阴性结石。涎腺内镜术后，涎腺区肿胀、不适、疼痛感明显减轻，未发现明显并发症。结论涎腺内镜技术是一种安全、有效、微创的介入学方法。对慢性阻塞性涎腺炎的诊治具有重要价值。