The longer I’ve been answering questions from users here, the more I’ve realized that many of you still don’t know how to describe your condition. So, starting today, I’ll summarize some of the details you should know, and hopefully you’ll learn how you can describe your problem more accurately after reading this. The more accurately you describe your problem, the more helpful the answer you will get! Lecture 1: How to describe the location of your teeth When a doctor sees a patient, the first thing he or she asks is the condition, and the first thing he or she needs to know is where the tooth you are uncomfortable with is located. Whether or not you know exactly where the affected tooth is is often one of the references for diagnosis. So, how do we locate so many teeth in our mouths? We divide the mouth into four areas using an imaginary “ten”, called “upper, lower, left and right” (naive? You know all that, don’t you? Then continue.) When we describe the area, we have to specify the specific, such as “upper left, lower left, upper right, lower right”; the location of the “ten” division of the upper and lower incisors as the center of the vertical division boundary. The principle of tooth positioning is: the middle incisors are “1” (there are 4 oh), to its sides were recorded as “2, 3, 4, 5, 6, 7”, the eighth is often called “wisdom teeth “. From incisor 1 to cusp 3 (tiger teeth), a total of 12 upper and lower, we are accustomed to call “front teeth”; from 4 onwards, a total of 16 – 20 ranging from the back, called “back teeth”. Each tooth has several sides. Customarily, we call the side facing the outside of the mouth the “labial (or cheek)” side; the inner side of the maxillary teeth is called the “palatal” side, and the inner side of the mandibular teeth is called the “lingual” side. The position of each tooth near the midline we call the “near center”, near the oral pharynx direction for the “far center”. (Are you dizzy? Is it hard to remember? Take your time, you’ll get used to it. Okay, let’s summarize what you need to “know” today: when we describe our bad teeth, we should say something like this, for example, “I have a black hole in my lower left 6th proximal center 。。。。” or just say “I have a wisdom tooth on the lower right 8th, near the upper left 4th”, etc. OK, class is over! Feel free to come back if you like.