This ceremony can be done after adolescent or the coming of age of about 14-15 years old, the six upper tooth including the canine are filed to symbolize the six evil spirits in his/her body named Sad Ripu which caused conflict in all human are now overcome, such as :
4. like to lie
5. like to be praised
6. like to slander.
And from now they are considered as fully women and men of course they start renouncing the childlike and so on.