At times, it is necessary for all teeth to be removed due to extensive periodontal disease and/or due to decay. An alternative for the replacement of all the teeth is a complete upper and/or lower denture. These dentures require support from your gum pad and many times require the use of dental adhesive. Throughout life, the dentures require constant adjustment and refitting and can cause the jaw bone to melt away making the dentures loose and once again requiring continuous adjustment.