NUMBERING SYSTEM FOR TEETH FDI (Federation Dentaire Internationale) It is a simple binomical system for numbering of teeth • The first of the two numbers identifies the quadrant and whether the tooth is permanent or deciduous as follows : 1. Permanent maxillary right quadrant 2. Permanent maxillary left quadrant 3. Permanent mandibular left quadrant 4. Permanent mandibular right quadrant 5. Deciduous maxillary right quadrant 6. Deciduous maxillary left quadrant 7. Deciduous mandibular left quadrant 8. Deciduous mandibular right quadrant • The second number identifies the particular tooth in the quadrant, exactly like the Palmar notation method for permanent teeth as 1 to 8. The deciduous teeth in each quadrant are numbered 1 to 5. The number increases in size from the midline posteriorly. Examples : o Permanent maxillary right third molar – 18 o Permanent maxillary left second molar – 27 o Permanent mandibular left first molar – 36 o Permanent mandibular right second premolar – 45 o Deciduous maxillary right first molar – 54 o Deciduous maxillary left canine – 63 o Deciduous mandibular left lateral incisor – 72 o Deciduous mandibular right central incisor - 81
Posted on: Sun, 08 Sep 2013 18:01:17 +0000
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