Briefly, prosthodontics are used in the following cases:

Replacing one or more teeth without affecting the adjacent teeth
Prosthodontics can be used as a bridge base at the end of a dental arch so that you do not have to use a removable denture.
If you don’t have all of your teeth and can’t use multiple implants, dentures can be placed as a base for your denture so your denture doesn’t move around in your mouth and you feel more comfortable.
Benefits of using prosthodontics compared to fixed teeth or fixed prosthodontics (bridge)
From whatever angle you look at it, prosthodontics is the best option for replacing your missing teeth.
Beauty: Prosthodontics will look exactly like your own teeth, and since they are fixed in the jaw they will prevent bone and gum decay, which is a side effect of previous conventional treatments (dentures or bridges). However, no one will notice that you have replacement teeth.
Preserving the structure of the adjacent teeth: In this method, the adjacent teeth will not be carved and will not suffer any caries later.
Self-confidence: Rest assured that prosthodontics will make you feel better about yourself, your smile, and your conversation with others.
Reliable: The success rate of prosthodontic implants is very high, and it is the best choice for replacing your missing teeth. Contrary to claims made in the past, prosthodontics have much higher success rates than other tooth replacement methods, and since dentures are made of pure titanium, there will be no prosthodontic rejection by the body.