What’s wrong with a sweet toothache that goes away after a while?

Eating sweet toothache for a while will be fine is the dentin exposure caused by tooth sensitivity symptoms, may be due to dental caries (i.e. tooth decay), wedge-shaped defects and gum recession and other reasons.
1. Dental caries: the outermost layer of the tooth is surrounded by a layer of enamel, which is the hardest tissue in the human body, if caries occurs, the enamel may be damaged, resulting in dentin exposure, then eat sweet may be stimulated through the dentin to the deeper dental nerve, which in turn produces the symptoms of toothache.
2. Wedge-shaped defects: wedge-shaped defects are often caused by incorrect brushing, wrong brushing method and excessive force, etc. can easily cause enamel defects in the neck of the teeth, resulting in exposure of dentin, at this time, eating sweet food is likely to occur in the teeth of transient sensitivity symptoms.
3. Gum recession: periodontitis and other diseases may lead to gum recession toward the root direction, so that part of the root surface is exposed, the root surface is not covered by enamel, so once exposed to the oral cavity, by the cold, sweet and other stimuli are prone to toothache symptoms.
Once symptoms such as toothache from eating sweets occur, it is important to seek the help of an oral surgeon in a timely manner, or the condition may continue to progress, which may in turn damage the nerve of the tooth.