DENTALDENTALN NUMBERINGUMBERINGS YSTEMSSYSTEMS Primary (Deciduous) Teeth ThereThere are arethree three different different numbering numbering systems systems used used to identifyto identify the theteeth primary in dentistry. teeth in dentistry. 1.TheThe Universal Primary NumberingUniversal Numbering System has System been adoptedwas adopted by the by ADA the ADAand is in in 1968 use byand most is in generaluse bydentists most generaltoday. and pedodontists dentists today.Tooth letter A is the farthest back on the Toothright number side of 1 the is themouth tooth in thefarthest upper back (maxillary) on the jaw.Theright side letters of your continue mouth alongin the the upper upper (max- teeth illary)toward jaw. Numberingthe front and continues across toalong the your tooth upper farthest teeth back toward on the the top front left and side across letter to J.The the letters toothcontinue farthest by back dropping on the down top leftto theside lower number (mandibular) 16.The numbers jaw. Letter continue K is the by toothdropping farthest down back to theon lowerthe left (mandibular) side of the mouthjaw. Number on the 17bottom. is the Letterstooth farthest continue back again on towardthe left theside front of your and mouthacross on tothe the bottom. tooth Numberingfarthest back continues on the bottomagain toward right sidethe frontof the and mouth across letter to theT. Some tooth dentist farthestuse the back alternative on the bottom version right which side is ofthey you number mouth thenumber teeth 32. from In this1 – 20system, in the the same teeth procedure that shouldstated be abovethere arebut numbered.they place a If loweryou are case missing d (deciduous) your third right molars, after your to the first number. number will be 2 instead of 1, acknowledging the missing tooth. If you’ve had teeth removed or teeth missing, the missing teeth will be numbered as well. 2.TheThe Palmer Primary Notation Palmer Numbering Notation Numbering System is usedSystem by someis used orthodontists, by some orthodontist, pedodontists, andpedodontists, oral surgeons. and Originally oral surgeons.The called the Zsigmondy mouth is divided system into after four an Austriansections dentistcalled quadrants.The of that nameletters who A developed through Ethe and idea a unique in 1861. symbol is used to identify the teeth in each quadrant.The Theletters mouth run is dividedfrom the into center four ofsections the mouth called to quadrants.The the back. In the numbers upper right1 through quadrant 8 and tooth a A is uniquethe symbolincisor.The is used letters to identify continue the to teeth the right in each and quadrant.The back to tooth numbering E which is runs the secondfrom the molar. centerThe of letters the mouth sit inside to thean Lback. – shaped In the symbol upper rightused quadrantto identify tooth, the quadrants.The number 1 is the L isincisor. right side Theup numbers for the continueteeth in theto theupper right left and quadrant.The back to tooth teeth number in the 8, upper which right is the use third a backwards molar.The L for numbersthe bottom sit inside quadrants, an L-shaped the L symbol is upside used down to identifyfollowing the the quadrant.The same pattern L fromis right the side uppers. up for 3.TheThe Palmer Primary Notation Federation Numbering Dentaire System Internationaleis used by Numbering some orthodontists, System pedodontists, (FDI). andInternationally oral surgeons. the Originally two – digitcalled system the Zsigmondy is widely usedsystem in Canadaafter an and Austrian European dentist countries. of that In name1996, who the developed ADA adopted the idea this in system. 1861. Every branch of dentistry uses this system. TheThe mouth mouth is is divided into four sections called a quadrant. Each quadrant is assigned a number. The maxillary right quadrant is assigned the number 5, the maxillary left quadrant is assigned the number 6, the mandibular left quadrant is assigned the number 7, and the mandibular right quadrant is assigned the number 8.The teeth with each quadrant are assigned a number from 1 – 5 with 1 being the second molar and 5 being the central incisor. Justi Educational Department Dental Numbering Systems Prim - Rev. 9/03 PRIMARY TEETH DENTAL NUMBERING SYSTEMS ILLUSTRATED 1 (R) Central (L) Central Incisor Incisor 55 65 (L) Lateral (R) Lateral Incisor Incisor A A 54 64 E F B B 5d 6d (R) Cuspid D G (L) Cuspid 53 4d 7d 63 C C C H 3d 8d (L) First (R) First 62 Molar Molar 52 D D B 2d 9d I Upper (R) Second (maxillary) (L) Second Molar 51 E E 61 Molar A 1d 10d J UNIVERSAL UNIVERSAL PALMER A LTERNATIVE LEFT FDI FDI RIGHT LTERNATIVE A PALMER UNIVERSAL UNIVERSAL Lower (R) Second 81 E T 20d 11d K E 71 (L) Second Molar (mandibular) Molar S 19d 12d L (R) First 82 D D 72 (L) First Molar Molar 18d 13d R M C 17d 14d C 83 16d 15d 73 (R) Cuspid Q N (L) Cuspid B P O B 84 A A 74 (R) Lateral (L) Lateral Incisor 85 75 Incisor (R) Central (L) Central Incisor Incisor Justi Educational Department Dental Numbering Systems Prim - Rev. 9/03.