Tooth pain relieved by regular CDS spray use

My brother has always tooht ache because of he ate too much candies everyday his crying everynight with so much pain so i sprayed CDS into his mouth several times a day for a week pain went away after a week but i will still continue to spray CDS into his mouth twice a day but sometime he brougth the CDS spray if ever he had tooht ache again he can do it to himself to make him tooth ache away