[Myth 1: Self-medication of anti-inflammatory drugs and painkillers can be used when you have a toothache, and you do not need to see an oral surgeon after the pain is relieved]. Correction: many causes of toothache, apical periodontitis, pulpitis, periodontal abscess, peri-coronitis, etc. can be manifested as symptoms of toothache, and after taking medication, to reach the dentition or periodontal tissues of the concentration of the drug is very low, rely on anti-inflammatory effect of the medication is not effective and the dentition for the closed space, the infection is poor drainage symptoms are not easy to control, relying on painkillers to stop the pain and do not seek medical attention in time can only be self-deceptive, counterproductive. Myth 2: Children’s milk teeth bad can not be treated, anyway, have to change teeth. Correction: Children’s milk teeth mainly traveling chewing, guide the eruption of permanent teeth, maintain aesthetic, promote the development of jawbone and other functions, especially to guide the eruption of permanent teeth. When the milk teeth caries, if not treated in time, not only affects eating and nutrition, when the development of milk teeth periapical disease, the serious infection of permanent tooth embryo, destruction of the permanent tooth embryo, and the lesser impact of the permanent teeth in the normal position of the eruption. Therefore, milk tooth disease should be treated in time. Misconception 3: The wisdom teeth can not be extracted if there is no discomfort. Correction: When wisdom teeth (end teeth) eruption position is not correct or eruption height is abnormal, the patient often do not feel discomfort symptoms, such wisdom teeth often cause pericoronitis, gap infection, food inclusions, displacement of teeth, second molar caries or root resorption, etc., without extraction, leaving a great potential for trouble, so when you find the wisdom teeth, should be timely consultation, seek guidance from the oral surgeon to help. Myth 4: Teeth cleaning increases the gap between the teeth. Correction: ultrasonic scaling can remove the tartar in the gap, so that the gap is clean and clear, the patient consciously after scaling the original gap where there is no gap, or found that the original gap becomes larger, mistakenly thought that scaling makes the gap wider, in fact, is the removal of tartar after the misconception. Myth 5: You can clean your teeth once and for all. Correction: After cleaning the teeth need to strengthen the patient’s self oral cleaning, such as scientific brushing and flossing, etc., in order to maintain the results of dental cleaning, or cleaning the teeth after the accumulation of bacteria in the surface of the teeth more rapidly, resulting in rapid deterioration of oral hygiene. Myth 6: Dental cleaning damages dental tissues. Correction: ultrasonic teeth cleaning is the use of ultrasonic high-frequency vibration to remove tartar. It is a simple and effective way to protect the teeth, mainly to clean the surface of the teeth, remove plaque, remove calculus, eliminate oral odor, give a person healthy teeth gums and beautiful appearance, the appropriate power is not damage to the surface of the teeth.