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Permanent maxillary first molar notation. In the universal numbering system, one number is used to identify the tooth. The right permanent maxillary first molar is known as tooth "3", and the left permanent maxillary first molar is known as tooth "14". In the Palmer notation, a number and symbol are used to identify the tooth. The number ...
The Universal Numbering System, sometimes called the "American System", is a dental notation system commonly used in the United States. [ 1 ] [ 2 ] Most of the rest of the world uses the FDI World Dental Federation notation , accepted as an international standard by the International Standards Organization as ISO 3950. [ 3 ]
14 24 maxillary first premolar 2; 44 34 mandibular first premolar 1; 15 25 maxillary second premolar 1; 45 35 mandibular second premolar 1; 16 26 54 64 maxillary first molar 3; 46 36 84 74 mandibular first molar 2; 17 27 55 65 maxillary second molar 3; 47 37 85 75 mandibular second molar 2; 18 28 maxillary third molar 3; 48 38 mandibular third ...
For example, the permanent left maxillary first molar is designated UL6. To prevent uncertainty or ambiguity, teeth may be indicated using more than one notation, particularly when referring for an extraction; this makes it less likely for the incorrect tooth to be needlessly extracted.
The mandibular first molar is the tooth located distally from both the mandibular second premolars of the mouth but mesially from both mandibular second molars. It is located on the mandibular arch of the mouth, and generally opposes the maxillary first molars and the maxillary 2nd premolar. This arrangement is known as Class I occlusion.
The maxillary teeth are the maxillary central incisors (teeth 8 and 9 in the diagram), maxillary lateral incisors (7 and 10), maxillary canines (6 and 11), maxillary first premolars (5 and 12), maxillary second premolars (4 and 13), maxillary first molars (3 and 14), maxillary second molars (2 and 15), and maxillary third molars (1 and 16).
Hence the left and right maxillary central incisor would have the same number, "1", but the right one would have the symbol "⏌" underneath it, while the left one would have "⎿". Comparison of alphanumeric notation, Palmer notation, ISO 3950 (FDI) notation, Universal Numbering System, and paleoanthropology notation
There are 32 permanent teeth and those of the maxillae (on the top) erupt in a different order from permanent mandibular (on the bottom) teeth. Maxillary teeth typically erupt in the following order: (1) first molar (2) central incisor, (3) lateral incisor, (4) first premolar, (5) second premolar, (6) canine, (7) second molar, and (8) third molar.