There are basically 4 options:
1 - Leave the gap as is. This is the "cheapest option". Risks are that teeth might drift into that space which might changes the bite. Drifted teeth/angled teeth are difficult to clean, and there can be a development of gum infections around these teeth.
2 - A partial denture. These are removable teeth.
3 - A Bridge. A tooth is attached permanently to teeth next store
4 - An implant. A dental implant attaches to the bone, and a crown is then attached to the top of the implant.
► See also:Taking DENTAL IMPRESSIONS : Correction Impression
So, certainly the advantage of a removable denture usually is its cost in that of all the tooth replacement options this is the cheapest of the lot. It's usually around $1,500.
The disadvantage is it is potentially going to show when you smile. And also the function - quite often when you're biting it's going to rock a little.
Fuente: Youtube / Periodontics & Implants