The advantage of a bridge is that it is cemented in place and you do not have to take it out (unlike partial dentures that have to be removed everyday). Another advantage is that it is usually less costly than an implant. This however can be misleading, A bridge consists of 3 or more crowns joined together - in other words, to replace a missing tooth, you prepare the teeth on either side of the space for a crown, then an impression is taken and the laboratory makes a restoration that bridges the space with crowns on the tow teeth on either end a fake one (or ones) in the middle. While this may be less of an investment in the beginning, flossing is a challenge with a bridge. If you get recurrent decay (cavity) on one of the anchor teeth, the entire bridge has to be replaced; not just the tooth with the decay. This can get costly over your lifetime. Another drawback that is not always true is the cutting down of healthy teeth. This is different for every patient. In some cases, the teeth on either side of the space needs crowns, but sometimes those teeth have nothing wrong with them. Hope this helps.