32 permanent teeth, including 16 maxilla and mandible. According to the shape and function of teeth, they are divided into incisors, canines, bicuspids (premolars) and molars. The front teeth are located in the front of the mouth, the canine teeth are located at the corners of the mouth, the premolars are located between the canine teeth and the molars, and the molars are located at the back.
Tooth position representation
Tooth position representation is a method of numbering every human tooth in dentistry. The upper and lower dentition is divided into four areas: the upper right area is also called area A, the upper left area is also called area B, the lower right area is also called area C, and the lower left area is also called area D. According to the order of dentition from front to back, each tooth is represented by numerical order, the permanent teeth are represented by Arabic numerals 1-8, and the deciduous teeth are represented by Roman numerals I-V.
The tooth representation of FDI is a tooth representation proposed by the International Dental Union in 1970, which is common internationally. Also known as ISO-3950 symbol. Each tooth is represented by two Arabic numerals. The first digit represents the quadrant where the teeth are located: upper right, upper left, lower left and lower right of the patient, 1, 2, 3 and 4 for permanent teeth and 5, 6, 7 and 8 for deciduous teeth; The second position indicates the position of the teeth: 1-8 from the central incisor to the third molar.
Refer to the above content: Baidu Encyclopedia-Tooth Position Representation