Dental Implants in elderly

Hello,
My mom is around 66 years old and are teeth are very week about 10 years ago a dentist recommended dental implants but she was not comfortable with procedure now that she is at the verge of loosing teeth I was wondering if it would be feasible to go with dental implants at this point in time?If dental implants are not feasible what would be her options?lately she has been experiencing pain in gums and I am worried it would eventually impact her ability to eat.Appreciate if someone here can few of the latest and greatest options I can further explore for permanent Dental Implants in elderly or any other temporary plug and remove options