Hi, Dental implant is recommended as it can be easily placed in place of decayed tooth without taking support of adjacent tooth. On the other hand, bridge is an alternative but second choice as it includes support from adjacent tooth and only then a bridge can be formed.

For decayed tooth best treatment is root Canal treatment and if it's wrong rct just get re-rct done If it is extracted then implant is best Post x ray if you have any

Go for implant as no other teeth will be disturbed also go for c days to check if the bone is fine

Do re-rct and crown if possible

Dental implant a small titanium cylinder is placed in the jaw bone at the site of missing tooth.that cylinder bond with the bone tissue to create an artificial root on the top of which an abutment and later an artificial tooth are placed.     With a dental bridge a pair or crown are installed onto your natural teeth on either side of the gap.those  crown are then used to create a bridge that holds an artificial tooth .The gap is covered but the artificial tooth is not actually fixed to the jaw

Both the treatment have their advantages and disadvantages..if the tooth is retorable then saving it is better option

Hloo mam If you are looking for the suggestion Between both of them implant is best In case you don't have any medical issues Like diabetes On other bridge is alternative to implant You can also practo consult us Regards