The mother did get blessings. It definitely didn't mean that the dogtooth was sacred or had power of blessing. It's because of the devotion of the mother.
老妈妈之所以得到加持，当然不是因为狗牙是神圣的或具有加持力，而是因为她具备了高度的虔敬心。
2
In Mongolia, they put the baby tooth in the meat and feed it to the young dog.
在蒙古，人们把乳牙放在小狗的狗食中。
3
The only reason to have titanium teeth? Medical reasons, he says, like "if a dog breaks a tooth... it's the same as a crown for a human."