Objectives At the completion of this chapter, you will be able to Identify three different tooth identification systems Describe each identification system as to its designation of dentition, arch, quadrant, and tooth
Universal Tooth Identification System REVIEW OF UNIVERSAL NUMBERING Most widely accepted tooth-recording method in US Uncomplicated and efficient Each tooth numbered from 1 to 32 in consecutive order
Begins with patient’s maxillary right third molar #1, ends with maxillary left third molar #16 Continues on mandibular left side with mandibular left third molar #17, ends with mandibular right third molar #32 UTIS: Permanent Teeth
UTIS: Permanent Teeth
UTIS: Primary Teeth Same as permanent, except uses letters Starts at primary maxillary right second molar A, ends on primary maxillary left second molar J Continues on mandibular left second molar K, ends with mandibular right second molar T
UTIS: Primary Teeth
Palmer’s Notation Designates each tooth according to its location in a quadrant Horizontal line separates maxilla from mandible Vertical line separates right and left sides of mouth
Palmer Notation System In the Palmer notation system, the quadrants are determined by the intersection of a vertical and a horizontal line. 10
Palmer’s Notation Permanent teeth numbered 1–8 in each quadrant Begins at central incisor, ends at third molar Primary teeth designated letters A–E When identifying individual tooth, use right angle to specify quadrant and arch
Central incisors (1) Lateral incisors (2) Canines (3) First premolars (4) Second premolars (5) First molars (6) Second molars (7) Third molars (8) Palmer Notation System 12
Palmer’s Notation
The number or letter assigned to each tooth depends on its position relative to the midline. The lowest number is closest to the midline and the farther the teeth are from the midline, then the higher is the number assigned to the tooth. Palmer Notation System 14
Palmer Notation System Each of the four quadrants is given its own quadrant bracket. 15
Palmer Notation System Capital letters A through E are used for primary teeth. 16
Palmer’s Notation Examples Tooth number written within the angle Permanent maxillary right central incisor: 1 Permanent mandibular left first premolar: 4 Primary maxillary left second molar: E Primary mandibular right canine: C 5
The Palmer notation system is a diagram of the teeth as if you were looking at a patient. The teeth in the right quadrant have the bracket to their right. e.g., 3 (permanent maxillary right canine) The teeth in the left quadrant have the bracket to their left. e.g., 3 (permanent maxillary left canine) Palmer Notation System 18
FDI/ISO Numbering System Federation Dentaire Internationale / International Standards Organization Introduced to provide a standard international system for coding teeth Each quadrant assigned a number Permanent teeth within a quadrant are numbered 1-8 from central incisor to third molar Primary teeth are numbered 1-5 NO LETTERS ARE USED
FDI/ISO Numbering System
FDI/ISO Numbering System (cont’d.) Each tooth identified with two-digit figure First digit designates dentition, arch and quadrant Second digit designates individual tooth Example: Maxillary right canine Permanent maxillary right = 1 Canine = 3 FDI/ISO code = 13
FDI/ISO Notation Examples
https://www.animated-teeth.com/questions-answers/teeth-numbers/tooth-numbering-quiz-3.html Practice Exercises 27
Summary Three tooth identification systems: Universal Tooth Identification System (UTIS) Palmer’s Notation Federation Dentaire Internationale / International Standards Organization (FDI/ISO) Know how to number using all three systems!