FDI (Fédération Dentaire Internationale) - World Dental Federation nomenclature for OPG reporting of adult dentition

Case contributed by Dr Yuranga Weerakkody

Patient Data

Age: adult
Gender: Male
Standard adult dentition

Case Discussion

The FDI (Fédération Dentaire Internationale) - world dental federation nomenclature is one of the methods of naming teeth. 

It is written as a two digit system where the first digit denotes the quadrant while the second digit denotes the tooth increasing from medial to lateral. 


  • right maxillary teeth : 1-8,1-7,1-6,1-5,1-4,1-3,1-2,1-1 (right to left)
  • left maxillary teeth : 2-1,2-2,2-3,2-4,2-5,2-6,2-7,2-8 (right to left)
  • right mandibular teeth : 4-8,4-7,4-6,4-5,4-4,4-3,4-2,4-1 (right to left)
  • left mandibular teeth : 3-1,3-2,3-3,3-4,3-5,3-6,3-7,3-8 (right to left)

The numbers differ for pediatric teeth which are as

  • right maxillary teeth : 5-5,5-4,5-3,5-2,5-1 (right to left)
  • left maxillary teeth : 6-1,6-2,6-3,6-4,6-5 (right to left)
  • right mandibular teeth : 8-5,8-4,8-3,8-2,8-1 (right to left)
  • left mandibular teeth : 7-1,7-2,7-3,7-4,7-5 (right to left)

Note that the number 18 tooth is absent on this OPG

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Case information

rID: 19472
Published: 13th Sep 2012
Last edited: 14th Aug 2019
System: Head & Neck
Tag: dental
Inclusion in quiz mode: Excluded

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