3D printing navigation template-guided percutaneous radiofrequency thermocoagulation for V2 trigeminal neuralgia treatment / 华西口腔医学杂志

OBJECTIVE@#This paper aimed to evaluate the effectiveness of the 3D printing puncture navigation template-guided percutaneous radiofrequency thermocoagulation for V2 trigeminal neuralgia treatment.@*METHODS@#A total of 52 patients with V2 trigeminal neuralgia were treated with radiofrequency thermocoagulation. A total of 32 patients were treated under the guidance of the 3D printing puncture navigation template (guide plate group), while 20 patients underwent puncture via pterygopalatine fossa routinely (routine treatment group). The puncture time, operation time, puncture success rate, and immediate postoperative pain were recorded. The degree of immediate postoperative pain was indicated by visual analogue scale (VAS). Barrow Neurological Institute (BNI) classification criteria were used to evaluate the efficacy, and the postoperative complications were observed. All patients were followed up for 1 year.@*RESULTS@#The two groups showed significant decrease in VAS after the operation (P0.05).@*CONCLUSIONS@#3D printing puncture navigation template-guided radiofrequency thermocoagulation may increase the operation success rate and reduce complication incidence. Therefore, this technique possesses clinical promotional value.

Electrosonographic analysis of sounds emanating from temporomandibular joint without symptom / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To study the characteristic of joint sounds from temporomandibular joint (TMJ) without symptom during mandible movement.</p><p><b>METHODS</b>Joint sounds of 42 asymptomatic TMJ were recorded and analyzed with K6-I system during mandible movement, the waveform, frequency range, peak frequency and amplitude of joint sounds electrosonogram were studied.</p><p><b>RESULTS</b>Joint sounds were recorded in 25 joints of the 42 joints, 4 kinds of joint sounds were found according to the waveform, frequency range, peak frequency and amplitude of the electrosonography.</p><p><b>CONCLUSIONS</b>Joint sounds can be recorded in asymptomatic TMJ during mandible movement, 4 kinds of joints sounds were found according to the electrosonographic characteristics.</p>

Clinical application of electrosonography in diagnosis of anterior disc displacement with reduction / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To investigate the electrosonography character of sounds emanating from anterior disc displacement with reduction of TMJ and the value of it in clinical diagnosis.</p><p><b>METHODS</b>The sounds from healthy TMJ, anterior disc displacement with or without reduction of TMJ, and osteoarthritis of TMJ were recorded and analyzed by K6-I system, then the data was used for diagnosis of anterior disc displacement with reduction in clinic.</p><p><b>RESULTS</b>A special kind of waveform was found in the electrosonography of sounds from anterior disc displacement with reduction repeatedly, and seldom or not in sounds from healthy joints, anterior disc displacement without reduction or osteoarthritis of TMJ. The diagnostic sensitivity of anterior disc displacement with reduction by using electrosonography analysis was 77.2% and specificity was 93.3% when compared with the clinical diagnosis based on clinical appearance and radiography evidence.</p><p><b>CONCLUSIONS</b>The special kind of waveform may be characteristic wave of sounds from anterior disc displacement with reduction of TMJ, which is useful for assistant diagnosis of anterior disc displacement with reduction in clinic.</p>

Evaluation of temporomandibular joint function after condylectomy for condylar hyperplasia / 中华整形外科杂志

<p><b>OBJECTIVE</b>To investigate the temporomandibular joint (TMJ) function of the condylar hyperplasia patients after condylectomy.</p><p><b>METHODS</b>Twelve patients with condylar hyperplasia were included in this study. Before and after condylectomy, they were examined and the Fricton' s Craniomandibular Index (CMI) was calculated to assess the functional disorder of TMJ.</p><p><b>RESULTS</b>(1) The facial asymmetry was improved after condylectomy. The morphological symmetry of the bilateral condyle and ramus was displayed by X-ray examinations. There was new cortex formed on the surface of the operated condyle. (2) The TMJ function was improved in terms of Fricton's DI and CMI, which decreased from 0.131 and 0.066 to 0.042 and 0.021 respectively (P < 0.05).</p><p><b>CONCLUSIONS</b>Condylectomy is an effective method to remedy facial asymmetry and, at the same time, improve the TMJ function of the condylar hyperplasia patients.</p>