My sister is 91 years old and has late dementia. She has lost 2 teeth within the last 2 months. The upper one fell out by itself. She had some pain in the lower one and the caregiver put some pain killer on the tooth and the pain went away. About 2 months later it just fell out. One dentist recommended making a bridge for the upper. Another suggested extracting her remaining (approx. 12) teeth in the top and giving her dentures. What are the ramifications for someone of her age with the trauma, i.e., needles, healing, etc. Any advice?