DENTAL NUMBERING SYSTEMS PERM - Pozzi - Leone

1 DENTAL . DENTALNN. UMBERING. UMBERINGSYSTEMS. SYSTEMS . Permanent Teeth There are are There three different three NUMBERING different SYSTEMS NUMBERING usedused SYSTEMS to identify the the to identify teeth in dentistry. teeth in dentistry. UniversalNumbering NumberingSystem Systemhas was been adopted adopted by the by the ADA ADAandand is inisuse in use by most by most general general dentists dentists today. today. Tooth number Tooth number 1 is1the tooth is the farthest tooth backback farthest on the rightright on the sideside of your of themouth mouth in in thetheupper upper (max- illary) jaw. NUMBERING (maxillary) continuescontinues jaw. NUMBERING along your upper along the teeth uppertoward the front teeth toward theandfrontacross and to the to the across tooth farthest tooth backback farthest on the top top on the left left sideside number numberscontinue by dropping continue by dropping downdown to the lower to the (mandibular).

2 Lower (mandibular) NumberNumber 17 is17the tooth is the farthest tooth backback farthest on the on theleft left sideside of your of the mouthmouthon the bottom. on the NUMBERING continues continuesagain toward again towardthe the front andand front across to the across tooth to the tooth farthest backback farthest on the bottom on the rightright bottom sideside of you mouth of the mouthnumber number32. 32. In this system , In this system , thethe teeth thatthat teeth should be there should are are be there numbered. If you numbered. are are If you missing youryour missing third molars, third youryour molars, firstfirst number will be 2. instead of 1,will number acknowledging be 2 insteadthe missing of 1, tooth. If you've acknowledging had teeth the missing If you'veorhad teeth missing, teeth removed the ormissing teeth teeth willthe missing, be missing numbered teethas will numbered as well.

3 ThePalmer PalmerNotationNotationNumbering NumberingSystem Systemis isused usedbybysome someorthodontists, orthodontists,pedodontists, pedodontists, andand oraloral surgeons. Originally surgeons. Originallycalled the the called Zsigmondy Zsigmondy system systemafterafter an Austrian an Austrian dentist of that dentist of that name whowho name developed developedthe the ideaideain 1861. in 1861. TheThemouth mouth is divided intointo is divided fourfoursections called sections called numbers numbers 1 through 1 through 8 and a a 8 and unique symbol unique symbolis used to identify is used to identifythe theteeth in each teeth in each NUMBERING NUMBERING runsrunsfrom the the from center of the center mouth of the to the mouth back. to the In the back. upper In the upperrightright quadrant tooth, quadrant number tooth, number 1 is1the incisor. is the incisor. TheThenumbers numbers continue to the continue rightright to the andandbackbackto tooth to toothnumber number 8, which is the 8, which third is the third numbers numberssit inside an L-shaped sit inside an L-shaped symbol symbolusedusedto identify to identifythe the L isLright sideside is right up for up for the the teeth in the teeth upper in the rightleft upper teeth teethin in thetheupper upperleftright use use a backwards a backwards L.

4 For the the L. For bottom quadrants, bottom quadrants, the the L isLupside is upsidedown downfollowing followingthe the same pattern same from pattern the the from uppers. Letters uppers. Letters suchsuch as UR. as URor URQ. or URQ for for the the upper rightright upper or upper or upper rightright quadrant quadrant maymayalsoalso identify the the identify quad- rants. quadrants. TheFederation FederationDentaireDentaireInternationale InternationaleNumbering NumberingSystem system (FDI).(FDI).Internationally Internationally the the two-digit two- digitsystem systemisisused usedworldwide. Everybranch branchofofdentistry dentistryuses usesthis thissystem. system . EachEach quadrant quadrant is assigned a is assigned a maxillary rightright maxillary quadrant is assigned quadrant the the is assigned number 1, the number 1, the maxillary left left maxillary quadrant is assigned quadrant the the is assigned number number2, the mandibular 2, the left left mandibular quadrant quadrantis assigned the the is assigned number number3, and the the 3, and mandibular mandibular rightright quadrant is assigned quadrant the the is assigned number number teeth within teeth eacheach within quadrant quadrantare are assigned a number assigned a number from 1 through from 8 with 1 through 1 being 8 with the the 1 being central incisor central andand incisor 8 being 8 being the the third molar.

5 Third molar. Justi Educational Department DENTAL NUMBERING SYSTEMS Perm - Rev. 9/03. P ERMANENT T EETH. DENTAL NUMBERING SYSTEMS . (R) Central Incisor ILLUSTRATED (L) Central Incisor 2. 11 21. (R) Lateral (L) Lateral Incisor 12 1 1 22. Incisor 2 8 9 2. (R) Cuspid (L) Cuspid 13 7 10 23. (R) First 3 3. (L) First Bicuspid 6 11 Bicuspid 14 24. 4 4. (R) Second 5 12 (L) Second Bicuspid 15 5 25 Bicuspid 5. 4 13. (R) First (L) First Molar 16 6 6 26 Molar 3 14. Upper (R) Second (L) Second Molar 17 7 (maxillary) 7 27 Molar 2 15. (R) Third (L) Third Molar 18 8 1 16 8 28 Molar UNIVERSAL. UNIVERSAL. PALMER. PALMER. RIGHT. LEFT. FDI. FDI. (R) Third (L) Third Molar 48 8 32 17 8 38 Molar (R) Second 47 7 31 Lower 18 7. (L) Second Molar 37 Molar (mandibular). (R) First 46 6 30 19 6. Molar 36 (L) First Molar 29 20. 45 5 5. (R) Second 35 (L) Second Bicuspid 28 21 Bicuspid 4 4. (R) First 44 27 22 34 (L) First Bicuspid Bicuspid 3 26 23 3.

6 25 24 33. 43 2 2 (L) Cuspid (R) Cuspid 1 1. 42 32. (R) Lateral Incisor 41 31 (L) Lateral Incisor (R) Central (L) Central Justi Educational Department Incisor Incisor DENTAL NUMBERING SYSTEMS Perm - Rev. 9/03.