Rotten teeth are caused due to the destruction in the normal structure of the teeth. It can occur due to many factors and it is necessary to consult a dentist for preventing total tooth decay. Tooth decay is the formation of dental canes or cavities between two teeth. Bacteria often invade your teeth due to frequent deposits of food particles making more acids that will eventually eat away your tooth. Tooth decay can cause moderate or sharp pain and if left untreated it can cause loss of tooth.
Symptoms :
The major symptom of rotten teeth is tooth decay affecting the enamel of the teeth. The infection will start affecting the deep layer of the teeth like pulp and dentine. Toothache is the first sign you can identify that something is wrong inside. Cavity of the tooth becomes black. Rotten teeth will emit bad (foul) smell indicating stages of decay. It shows the bacteria is slowly killing the teeth showing it is in the process of decaying.
There will be bad breath from the mouth and white or black spots are seen on the teeth. It is the action of the bacteria that has already infected the tooth which will eventually turn the remainder of the tooth to black color. There will be nothing left in the rotten teeth and bacteria will gradually spread to the neighboring teeth if not treated. The tooth becomes sensitive and pains when you drink anything cold. It can cause swollen glands and throbbing pain along with fever.
The size of the tooth will eventually get reduced since the bacteria have completely eaten away the pulp and dentin. The teeth will become thin and small if you observe it closely. Rotten teeth in the final stage will fall out. The teeth turns black in color only if the root has been destroyed which will eventually break and fall away with the tooth.