Dental patients often wonder which approach is the best for them -- removable dentures, tooth supported fixed bridges, and dental implant supported bridges. Here is a comparison of several of the most popular choices. While some choices are initially less expensive, they can become costly due to frequent repairs and adjustments. Comfort is a major factor when making a choice. Appearance is another. Bone loss is in the jaw can cause some prostheses to lose their fit after awhile.