顎関節腔洗浄能力に関する流体力学的基礎的研究

抄録

To simulate the temporomandibular loint articular cavity irrigation, a superior articular cavity model was fabricated with ethylene-vinyl resins, based on measurements by single-contrast arthrography and the scale of the mantle tube. Experiment methods, after injection of lindigo carmine solution, the model was perfused with distilled water by the arthrocentesis (AC) and pumping lavage system(PLS)irrigation. Using particle induced X-ray emission, we quantitatively analyzed the amount of sulfur, a component element of the indigo carmine, contained in the effluent fluid and in the remaining fluid in the model. The differences in the effectiveness of the two irrigation methods were hydro-mechanically evaluated. AC was highly effective in cases in which an inflow needle was placed in the posterior compartment, an outflow needle in the anterior compartment, and the flow of the perfusate was fast;however, differences were observed depending on the position in which the outflow needle was inserted, PLS was considered to be a comparatively effective method.