Anyone who has visited a dentist would like to see what is written in their medical record, and the symbols and terms written by the doctor are always incomprehensible, and the teeth that have not been treated are thought to be finished, and sometimes even cause misunderstanding. Here is a brief introduction to the symbols and terms often used by dentists in the medical record writing during dental visits. (1) The permanent teeth are indicated by the Roman numerals “Ⅰ, Ⅱ, Ⅲ, Ⅳ, Ⅴ” for the milk teeth and “1, 2, 3, 4, 5, 6, 7, 8” for the Alaman numerals respectively. (2) “┼ô”: The whole mouth is divided into 4 zones with the “┼ô” mark, and the upper left part represents the right upper teeth, the upper left part represents the left upper teeth, the lower left part represents the right lower teeth, and the lower right part represents the left lower teeth. (3) Several letters of abbreviations commonly used in dentistry, such as “M, D, 0, B: usually the teeth are divided into left and right sides with the midline in the middle of the mouth, and for each tooth. The part close to the midline is called “near mid” and is indicated by “M”: the part far from the midline is called “far mid” and is indicated by “D The surface where the upper and lower teeth chew food is called the “chewing surface” and is represented by “O”; the surface of the teeth near the buccal side (commonly known as the cheek) is called the “buccal surface” and is represented by “B”. “B” to indicate. With these symbols and letters, the doctor can accurately indicate the tooth being treated and its location. (4) Pulp inactivation: The process of killing the nerve of a tooth when pulpitis or pulp treatment is required. This indicates that the treatment is not over and should be followed up at the time ordered by the school doctor. (5) Open: In the case of pulpitis or apical infection, a cotton twist or cotton ball dipped in anti-inflammatory medicine is placed in the treated tooth to eliminate the inflammation. It is usually necessary to follow up the treatment again after 3-4 days. (6) Filling: Whether it is “silver mercury filling” (referred to as “mercury light”), or “light filling” (referred to as “light solid “). It means that the tooth has been treated. In conclusion, I hope you will not forget to ask your doctor after each visit if the treatment is complete. Remember to ask the doctor if you want a follow-up visit and remember when your next visit will be.