Seema,
I am wondering about the "Ozone" treatment and what it is for.
Ozone can be toxic to tissue and cause problems with the lungs etc.
If there are two teeth that are as problematic for your mother as you say and would otherwise be removed in a healthy individual then I would suggest finding out the exact reason that her dentist will not extract them. If it is due to the possibility of her developing ORN during healing then hyperbaric oxygen treatment may be required before and after the extractions.
If the teeth are sound but just irritating her cheek then smoothing down the cusps may help. If they are solid but abcessed then root canals may due the trick.
Without knowing what exactly is going on I can't advise you on the most reasonable course of action.
Please let me know as much detail as you can and I'll try to help.
All the best,
Mike