Q. What happens if I have a cavity?
A. Once the cavity has reached the dentine your tooth may become sensitive, particularly with sweet foods and drinks, and acidic or hot foods. As the decay gets near the dental pulp you may suffer from toothache. If the toothache is brought on by hot or sweet foods this may last for only a few seconds. As the decay gets closer to the dental pulp the pain may last longer. In this case, visit your dentist straight away as the tooth is dying and you may develop a dental abscess if it is not treated on time.