CREATE TABLE table_204_625 (id DECIMAL, "model" TEXT, "availability" TEXT, "introduced" TEXT, "length of use" TEXT, "last of whiteness" TEXT)

what product was introduced in the same month as crest whitestrips 3d advanced vivid ?
SELECT "model" FROM table_204_625 WHERE "model" <> 'crest whitestrips 3d advanced vivid' AND "introduced" = (SELECT "introduced" FROM table_204_625 WHERE "model" = 'crest whitestrips 3d advanced vivid')
SELECT "model" FROM "table_204_625" WHERE "introduced" = (SELECT "introduced" FROM "table_204_625" WHERE "model" = 'crest whitestrips 3d advanced vivid') AND "model" <> 'crest whitestrips 3d advanced vivid'