If I do experience symptoms from decay what would they be?

The most common symptoms of decay are pain or sensitivity to sweet, cold and sometimes hot. If left untreated, in the advanced stages where the pulp is involved, bacteria can enter the pulp and spread down the root canals. The most common outcome is a tooth abscess often seen as a gum boil with pus discharges. By this stage, there is often tenderness to biting/chewing, pain to hot food/drinks and even disturbed sleep. Pain killers also tend not to work too well either. As well as this, the entering and spread of bacteria from the root canals into the blood stream can result in a facial swelling which then becomes life threatening.