[The effect of local anesthetics and injuries on the angiographic picture of the cat mandibular blood vessels].

The authors examined the effects of local anesthetics and traumata (traumatic dental extractions) on the angiographic picture of the mandibular vessels of the cat in the 10th, 70th and 120th minutes. The application of local anaesthetics results in a reduced filling of the inferior alveolar artery in the 10th and 70th minutes. The picture returns to normal in the 120th minute. The traumatic extraction produces more marked changes up to complete spasm of the vascular system of the common carotid artery. In the 120 th minute, the blood supply is restored; and the normal number of vessels appears on the aniograph, but their lumina are still reduced. The vasoconstriction caused by local anesthetics and traumata plays an important role in the pathogenesis of the primary dry socket.