The most likely ways to treat your missing teeth are:

1. A plastic removable denture- this is your cheapest option and will certainly help to replace your missing bone to give you better lip support. It is the most bulky of your options and the least retentive. It can also cause future tooth and gum problems due to it having to have intimate contact with the necks of your remaining teeth.

2. A removable chrome denture – a better option than the above as it can be kept clear of most of your remaining teeth. It uses metal clasps to keep your denture in place that can be visible on a full smile and is removable.

3. A removable chrome denture with precision attachments – instead of clasps some of the remaining upper teeth are crowned and special attachments are made on these crowns to hold the denture in place. Usually aesthetically more pleasing as no clasps visible and more stable. This is also removable.

4. Implants placed in the area where you have missing teeth. These can then either have a bar attached to them which a denture can clip onto – a very stable solution but still removable. Another option would be to have a bridge attached to these implants with some bone grafting to replace the missing bone- a more complex solution and may not be possible depending on how much bone is lost. This would be your only fixed solution.

Hope this helps to clarify your situation.