If you had a dream as a molar tooth decay: You may experience events that require sacrifice, it is useful to be under control. Tooth decay in a dream is seen as a symbol of setbacks and difficulties in your life, of having trouble. Decay of molar teeth also portends harm, loss and trouble from a relative you trust and value. It is considered as a symbol of many negativities that will happen in your life. It is also beneficial to be cautious, to give alms and to ward off calamities by doing good deeds.