The clinical performance of dental mellitus can be classified as reversible, acute and chronic。
(i) reversible dentalitis
1. [symptoms] cold, hot temperature irritation or acid, sweet chemical irritation pain, no spontaneous pain。
2. [check] (1) suffers from near-minine diseases such as deepness, deep wedges, deep tooth bags, (dentures) trauma, etc. (2) the cold test is sensitive and the irritation pain disappears instantly. (3) dynamic tests are sensitive. (4) kowtow (-)。
(ii) acute dentalitis
Symptoms: the main symptoms of acute dental disease (including acute onset of chronic dental disease) are severe pain. The nature of pain has four characteristics:
(i) the spontaneous onset of pain. Without any irritation, the patient experienced severe acute pain. Pain has a onset period and a relief period, i. E. A so-called tectonic or tectonic increase. Inflammation begins with a short duration, long relief periods and low frequency of onset; long duration, short relief periods and high frequency of onset after inflammation. Even pain without rest. Patients experience throttle and throttle during septicitis。
(2) night pain. Toothitis patients often have difficulty sleeping or awakening because of nighttime pain。
(3) temperature stimulates increased pain. Most dentists do not dare to overheat their diet. However, in the period of sepsis, there is a phenomenon of “hot cold relief”. At the time of the visit, the patient may come with cold water and wash his mouth constantly in order to minimize the symptoms of dental pain。
(4) pain is difficult to locate. Usually the patient tells you this pain can tell the difference between front and back. But it's always wrong. Pain is often radioactive or is associated with pain. It is the second and third distribution areas along the trident nerve that are radiant to the upper, lower teeth or heads, jaws, face. Not on the side。
(iii) chronic dentalitis
1. Chronic closed dentalitis

1) symptoms: 1 long-term cold and heat irritation symptoms; 2 no visible spontaneous pain; 3 history of severe tooth pain。
(2) inspection: 1 showing damage to the rigid tissues of the teeth that are so close to the depths. 2 no marrow holes. 3 patients feel and react less: pain detection is not visible; electrodynamic and temperature tests are slow. 4o (-) or (+)。
2. Chronic ulcers
1) symptoms: 1 more visible temperature irritation pain; 2 more spontaneous pains; 3 food embedded pains。
(2) inspection:

1 observe damage to the rigid tissue of the teeth, which is so close to depth。
2 visible or perforated marrow holes with severe pain。
3 temperature test sensitive。
4o (-) or (+)。




