水酸化カルシウム系歯科根管充填材料によって生じた上顎血管塞栓症の1例

抄録

Calcium hydroxide formulation is frequently used in the treatment of root canals. We report a case where this formulation caused maxillary vascular embolism. A patient received an injection of calcium hydroxide formulation in to the right maxillary lateral incisor in a dental clinic. Immediately after, he presented with swelling of the surrounding gingiva, right cheek swelling, pain, and malaise. Necrosis of the right palate mucosa was observed. A CT image showed calcium hydroxide formulation confirmed to running from the greater palatal artery to the maxillary artery. We diagnosed maxillary vascular embolism caused by calcium hydroxide. On day 32, necrotic tissue of the palate mucosa was removed as much as possible under local anesthesia. On Day 233, the right upper 2 teeth were extracted and a radicular cyst was removed. On day 335, the redness on the right cheek skin almost disappeared, and the opening increased to 42 mm. The right oral and extraoral hypoesthesia remained, but was improving, and the right palate mucosa was completely epithelialized.