Why does the tooth hurt with hot food?

No ambiguous interpretation is possible for a toothache. It starts to signal a certain disorder and asks for soon dentist’s check. However, it is possible to misconceive some dental discomforts as rather innocent for they are infrequent and caused by certain triggers. This happens when people suffer a toothache for hot food. You may want to exclude hot meals and beverages from your diet to eliminate pain cases, but, in fact, it won’t address the core of the issue.

Causes and accompanying symptoms

As soon as the dentist hears from a patient, ‘My tooth hurts when I am having my hot coffee’ he immediately comes up with the list of possible causes:

  • When examination of a sore tooth detects enamel damages or obvious cavity, it shows that the pain occurs as a response of a sensitive pulp after being ‘informed’ of temperature drops through an exposed dentin.
  • toothache for hot food photoWhen a patient had his root canal, that of a molar in particular (last and second last permanent teeth in a row), treated recently, and this very tooth hurts when exposed to heat, undiscovered canal is possibly the fault. This happens often when there is no x-ray study prior to the treatment. Dentist fills two or three canals (a common number for a posterior tooth) relying solely on his own knowledge and experience. Though there are cases when an extra root is found, and, with its pulp tissue and canal still exposed, a rapid inflammation starts, and hence ache triggered by heat.
  • When dental check locates a deep cavity, and a patient also complains of long, excruciating pain that medication fails to stop, plus discomfort when eating hot dishes, the unpleasant feeling is most likely caused by endodontitis. Pulp inflammation, for a short definition of the condition, is characterized by described above soreness as well as a bad breath persistent to the most thorough brushing. In addition, severe endodontitis often develops high body temperature, ranging up to 38-38, 5°C.
  • Granuloma aka tooth root cyst. Masses in dental root area occurred under a number of reasons, such as caries and chronic endodontitis, generalized infections, and others. The condition develops hardly any symptom for a long time. Now and then it takes its toll only as a toothache hot water or meals trigger. Painful feelings get worse during recrudescence or cyst high growth, with liquid and pus mixture being effused from under the gum.

Dental sensitivity causes are not limited to the list above. These are the most likely ones, discovered in 90% of all cases when at dentist’s for the complaint of heat-sensitivity.

Particular complications

toothache hot water photoThe first problem, a person tends to find as the most noticeable, is their life getting worse with a number of restrictions to stick to in order to minimize painful feelings. Though there are also medical complications that cannot but strike. Such as:

  1. Dental periostitis occurs as a result of infection being spread to the periosteum of the root canals
  2. Jaw bone tissues wasting due to the prolonged contact with the cyst, and possibly a high risk of jaw bone fracture
  3. Formation of single or multiple cysts resulting from infections having escaped outside the root canal.

Note that health quality is also affected by prolonged drug treatment targeting at pain. Analgesics or anti-inflammatory non-steroidal medicines are not intended for long-term use, and hence severe harm to the body. It is a common case when a person following weeks of medicine intake to alleviate toothache hot drinks caused, has to stay in hospital due to GIT acute inflammation, blood disorders, and other conditions developed as a result of groundlessly inappropriate analgesic therapy.

Treatment methods

At early and medium stages of cavity, the pulp is not affected, meaning it is enough to remove damaged parts of enamel and dentin prior to the filling for a treatment. However, in cases of deep caries and/or endodontitis pulp extraction, dental root canal purifying and sealing are needed before the cavity being filled. When x-ray study reveals a cyst located in the apex of the root, nonsurgical treatment is considered to be ineffective. It is prescribed only to help certain patients (pregnant or breastfeeding women, those after illness or surgery) for a temporary measure only.

For the other cases, surgery is recommended to have cyst removed. When an extra root with canal not empty is detected, repeated operation on the tooth and its canals is required. Dentist removes filling, clears canals (including the forgotten one), and use sealants for blocking, with proper medication and recovery to follow.

Since the procedures are given under local or intravenous anesthetic, depending on the clinical case complexity, there is no need to be scared, your sore tooth will be treated properly, no unpleasant sensations to bother you.


Given all causes of sore tooth from hot meals that result directly or indirectly from improper dental care, preventive measures are obvious and as follows:

  1. Control quality and frequency of oral hygiene.
  2. See your dentist at least 2 times a year, rather than wait for a discomfort.
  3. Treat any identified dental disease in time, even if it does not bother you.

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