More types of mobile phones, and the structure can be divided according to speed and low-speed high-speed mobile phones, high-speed mobile dental handpiece using high pressure air driven turbine handpiece for micro turbine speed can be up to 300,000 to 500,000 r / min, bur cutting speed can be up to 15m / s, while the low-speed mobile dental handpiece because it is gear, speed can be transferred per minute for thousands of 30000 rpm.
2013年9月24日星期二
toothache types and treatment
As the saying goes: "toothache is not a disease, pain up to life," there are many manifestations toothache
1, hot and cold sweet and sour pain: sweet tooth pain cold case, removal of irritants, the pain disappeared. Dental pigmentation, common to dental caries. Gingival margin tooth surface, no pigmentation, deep wedge-shaped defect. Two kinds of dental problems are mild, restorative treatment can improve. But if it is due to gingival recession caused by dentin hypersensitivity, the treatment process is more complicated.
2, spontaneous pain: spontaneous gingival pain, can not be located, the pain got worse when sleeping; cold, curing light heat stimulation can induce pain, remove the pain stimulus continues for some time, pain to the ear temporal radiation, which means that there is inflammation of the pulp.
3, persistent pain: persistent pain in the gums, can be clearly positioned teeth floating sensation, knocking teeth or bite things obvious pain. Description invade apical inflammation. Treatment is too much trouble, emergency principle is "decompression and drainage" - to open a hole in the middle of the tooth, so inflammatory secretions out, reducing the pressure of the pulp cavity. X-rays taken after the election according to the condition of root canal treatment or plasticizing treatment.
4, biting hard objects pain: pain biting hard things have knock history of stones and other hard objects. Tooth may have cracks, severe tooth may crack. Depending on the depth of treatment decisions cracked: If tooth is loose, you want to unplug. Such as shallow, you can do sets crown retained.
5, "best-rooted teeth" pain: do-rooted teeth (wisdom tooth, third molar) at the persistent pain, Apex Locator touch gum pain got worse, with severe mouth ox, often made inflammation, anti-inflammatory after the removal of "best-rooted teeth." .
6, gum pain: persistent pain in the teeth, accompanied by swelling, loose, many accompanied by food impaction symptoms of periodontitis performance.
These symptoms should be treated early, while painkillers to ease the pain.
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