Ultraman Taro: S1 E13 - The Monster's Cavity Aches! Ultraman Taro
ZAT was carrying out a drill in Nambara's homeland Kyushu. They launched an underwater rocket towards a simulated monster, but the rocket accidentally lands in the mouth of Cavity Monster Sheltar. Kotaro attempts to remove the rocket stuck in its mouth, but ends up pulling out a normal tooth on accident.