Daejeon Dunsan East Dental Clinic

I heard that they use gargle anesthesia when scaling these days. Does anyone know of a place that uses gargle anesthesia in Dunsan-dong, Daejeon? It hurts so much every time I get my teeth scaled. I did it a few times when I lived in Cheonan and it was great, but I moved to Daejeon and it's a shame.