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The control group consisted of 31 subjects with no TMJ symptoms.
      
No significant correlation between the degree of anterior disk displacement and palpation pain of the masticatory muscles or clicking/crepitus of the TMJ could be found.
      
Joint clicking was observed in 65% of patients with TMJ symptoms in normal disk position (NDP).
      
Condylar restoration after early TMJ fractures and functional appliance therapy
      
Condylar restoration after early TMJ fractures and functional applicance therapy
      
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Abstract84 cadavers' temporomandibular joints were used tocompare the results shown in standard lateral tomo-graphs and Schuller's position films with gross views onthe bone and cartilage changes.The results and conclusions were as follows :(1) The posrtive rates of the radiographic evidenceswere associated with the degrees of the macroscopic le-sions. The more severe the macroscopic lesion, thehigher the positive rate of radiographic evidence.(2) The sensitivity of radiographic examinationwas positively correlated...

Abstract84 cadavers' temporomandibular joints were used tocompare the results shown in standard lateral tomo-graphs and Schuller's position films with gross views onthe bone and cartilage changes.The results and conclusions were as follows :(1) The posrtive rates of the radiographic evidenceswere associated with the degrees of the macroscopic le-sions. The more severe the macroscopic lesion, thehigher the positive rate of radiographic evidence.(2) The sensitivity of radiographic examinationwas positively correlated with the extent of the macro-scopic lesion. So, the negative predictive value was.However, the specificity and the positive predictive val-ue of the radiographic examination were negatively cor-related with macroscopic change index. It has beenfound that the more the extent of osteoarthrosischanges, the higher the sensitivity of radiographic ex-amination; the higher the negative predictive values,the higher the positive rate of radiographic evidence,and the lower the underdiagnosis rate was. Meanwhile ,the more the extent of bone pathological changes in thejoint , the lower specificity of the radiographic examina-tion , and the lower the positive predictive values and themisdiagnosis is increased.(3) The radiographic diagnostic value based on thestandard latreal tomographs of TMJ , Schuller's positionfilms or based on the both methods was not satisfied. Itsunderdiagnosis rate was higher. Therefore, we suggestthat multiple-layers lateral tomography should be widelyused in the clinical practice.

作者通过对84侧颞下颌关节老年尸体标本标准侧位体层片和薛氏位片X线检查结果与标本肉眼观骨、软骨病变结果进行比较分析,发现:①X线病变检出率与肉眼观病变程度有关:病变程度愈重,X线检出率愈高;②X线检查的敏感度及预测阴性率与病变范围指数呈正相关关系,特异度及预测阳性率与病变范围指数呈负相关关系;这一结果说明,骨关节病变范围愈大,X线检查的敏感度愈高,预测阴性率愈高,即对骨病变的阳性符合率愈高,漏诊率愈低;同时表明,骨关节病变范围愈大,X线检查特异度愈低,预测阳性率愈低,即阴性符合率愈低,误诊率增加;③关节标准侧位体层片、薛氏位片以及标准侧位体层片加薛氏位片三种方法的检查结果,其敏感度和特异度均不能令人满意,且漏诊率较高,因此建议临床推广多层侧位体层摄影的检查方法。

Abstract26 cases with Temporomandibular Joint Dysfunc-tion Syndrome (TMJDS) were included in the presentstudy. Fully corrected lateral tomogrames of TMJ in theintercuspid position were taken for all the cases;and ful-ly corrected lateral arthrotomogrames were taken for 19cases (21 joints) of them. The area and linear measure-ments of the joint space were made with the aid of com-puter. The results showed that the position of thecondyle in the patients with TMJDS was located in theposterior position of...

Abstract26 cases with Temporomandibular Joint Dysfunc-tion Syndrome (TMJDS) were included in the presentstudy. Fully corrected lateral tomogrames of TMJ in theintercuspid position were taken for all the cases;and ful-ly corrected lateral arthrotomogrames were taken for 19cases (21 joints) of them. The area and linear measure-ments of the joint space were made with the aid of com-puter. The results showed that the position of thecondyle in the patients with TMJDS was located in theposterior position of the fossa. Statistics results showedthat there was significant difference between the patientgroup and control group. Although the posterior dis-placement of the condyle was often associated with theanterior displacement of the disc, it was not always a-greement with the anterior disc displacement. So, theexact diagnosis of disc displacement should be still onthe basis of arthrography or other examinations , such asCT or MRI.

为探讨髁突在关节窝位置对TMJDS结构紊乱的诊断意义,作者选择颞下颌关节紊乱综合征结构紊乱患者26例,均拍摄关节完全矫正关节侧位体层片,并利用计算机技术进行关节间隙的面积及线性测量。其中19例(21侧)进行关节上腔造影检查。结果表明:颞下颌关节结构紊乱患者课突位置呈明显后移位,与健康对照组比较有显著性差异。虽然髁突后移位与关节盘前移位有一定相关性,但不尽一致,关节盘前移位的诊断最终仍需依靠关节造影或CT、磁共振等医学检查。

Temporomandibular Joint (TMJ) panoramic views and transpharyngeal radiographs were used in thirty patients with tetnporomandibular disorder (TMD). The results showed that TMJ panoramic radiography was better than transpharyngeal radiography in demonstrating condyle changes and was easier to operate. We recommend TMJ panoramic radiography for observing condyle changes in patients with TMD.

30例TMD患者同时拍摄颞下颌关节曲面体层片及髁状突经咽侧位片.结果显示:TMJ曲面体层摄影术显示髁状突骨质改变优于经咽侧位且投照技术容易掌握,作者建议使用TMJ曲面体层摄影术观察TMD患者的髁状突骨质改变.

 
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