Implants are surgical procedures recommended for people with excellent general health...how is your mother's health? BP/Diabetes? cardiac/renal? why & how did she lose the tooth? Apart from the general condition,dental & oral health,amount of surrounding bone & distance from the sinus
is important. For this you will need an OPG X-ray.
Please contact an Implant specialist & first check out if she is eligible for an implant.
There are different kinds of implants & can cost anywhere between 30 to 45 thousand.
Thanks & Take care