If you have one or more missing teeth then this can have a serious affect on your smile and on your dental health. Problems with missing teeth can arise due to the following: There is a shift in the alignment of your teeth There is an increased risk of periodontal disease. The risk of tooth decay increases Adjacent teeth may cause problems They may cause a speech impediment. They may cause TMJ issues What exactly are dental bridges Like dental implants, dental bridges can be used to replace missing teeth or a missing tooth. These bridges are supported by the teeth on either side. The teeth on either side are known as abutment teeth.