hello and welcome to HCM forum,
i would like to inform you that, the roots which are now left out should be extracted first as they can be the reason for infection, also if all your teeth are periodontally compromised then its better to get them removed which should be followed by dentures, you have not mentioned your age or any other medical condition you are suffering from besides high blood pressure
, i hope you are taking medication for that.
i would recommend a few measures which will be easy for you to follow;
1. use a mouthwash, if brushing teeth is not possible,
2. rinse your mouth with plain water after every meal,
your gums with a gum paint using for finger for a minute,
4. do visit your dentist
at regular intervals.
i wish you good health,