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What are the three parts of a dental bur
Head, shank and neck
Bur Head
contains the cutting blades of the bur
Bur neck
connects the head and shank
Bur shank
the piece that is inserted into the handpiece
US numbering system for burs
most commonly for carbides. one to four digit numbers
ISO bur numbering system
most commonly for diamond burs; 15 digits
Diamond bur grit sizes
The finer the grit, the LOWER the number in micron
Super coarse (150 micron)
Coarse (125 micron)
Medium (100 micron)
Fine (30 micron)
Extra fine (15 micron)
Carbide bur grit sizes
The finer the grit, the HIGHER the number of blades
12 blade (30 micron fine)
20 blade (15 micron extra fine)
30 blade
Per ISO standards, the diameter of a rotary instrument is defined as the ____ part of the cutting surface
widest
Two types of shanks
Friction grip (high speed, stays in with friction) 1.6mm
right-angle latch (slow speed contra angle, contains a latch) 2.35mm
Friction grip shank types
31-FG and 33-FGSS (short shank)
Right-angle latch shank type
21-RA
High speed handpiece speed (gear ratio, speed range, maximum torque)
Gear ratio- 1:5
Speed range- 500-200,000 rpm
Maximum torque- .7Ncm
Slow speed contra angle handpiece speed (gear ratio, speed range, maximum torque)
Gear ratio- 1:1
Speed range: 60-40,000
Maximum torque: 3.5Ncm
Minimally invasive burs
889M,
1-008,
1/2-007
Caries removal burs
2-010,
4-014,
6-018,
8-023
Mandrel bur
310-21
Direct restoration bur
329,
330,
245,
801-014,
801-018,
801-010
Finishing burs
7901,
8888,
132EF,
8274,
379F
Indirect bonded restoration burs
845KR-016, 8845KR,
845KR-025, 8845KR-025, 847KR-016,
8847KR- 016, H336-016
Cemented restorations burs
859,
856-014,
856-016,
8850-016
878K,
6847,
10839,
379
Bur 889- Medium micro flame diamond
Diamond bur
medium grit
tapered micro flame shape
FG shank
Minimally invasive preparation to open carious pits and fissures
Bur 1/2 006- round carbide
Carbide bur
6 blades
Round shape
Latch type shank
Minimally invasive caries excavation
Bur 2 010- round carbide
Carbide bur
6 blades
round shape
latch type shank
Minimally invasive caries excavation. Removes composite restorations, liners (deep layers adjacent to dentin)
Bur 4 014- round carbide
Carbide bur
6 blades
round shape
latch type shank
Caries removal. Minimally invasive caries excavation. Remove composites/liners
Bur 2 010- round carbide
caries removal
carbide bur
6 blades
round shape
latch type shank
Caries removal. Minimally invasive caries excavation. remove composite/deep layers
Bur 4 014- round carbide
caries removal
carbide bur
6 blades
round shape
latch type shank
Caries excavation. removes composites and liners
Bur 6 018- round carbide
caries removal
carbide bur
7 blades
round shape
latch type shank
Caries excavation. removes composite/liners
Bur 8 023- round carbide
caries removal
carbide bur
8 blades
round shape
latch type shank
Caries excavation. removal of composite/liners
Mandrel 310
mandrel
snap on mandrel
latch type shank
Attachment for sof-lex disks. Speed is based on grit
Bur 329- pear carbide
direct restorations
carbide bur
6 blades
pear shape
friction grip shank
Cavity preparation, enamel
Bur 330- pear carbide
direct restorations
carbide bur
6 blades
pear shape
friction grip shank
Cavity preparation. Removes amalgam restorations
Bur 245- pear carbide
direct restorations
carbide bur
6 blades
pear shape
friction grip shank
Cavity prep, enamel, interproximal box. Removes amalgams
Bur 801-010- medium round diamond
direct restorations
diamond bur
medium grit
round shape
friction grip shank
cavity preparation, enamel. Veneer preps. Remove composite NOT amalgam
Bur 801-014- medium round diamond
direct restorations
diamond bur
medium grit
round shape
friction grip shank
Cavity preparation, enamel, veneer prep, remove composite NOT amalgams
Bur 801-018- medium round diamond
direct restorations
diamond bur
medium grit
round shape
friction grip shank
Cavity prep, enamel, veneer prep, rest seat prep, remove composite NOT amalgam
Bur 7901- flame carbide
direct restorations
carbide bur
fine grit (red)
12 blades
friction grip shank
Composite restorations, class 5, contour composite restorations
Bur 8888-fine flame diamond
Finishing
diamond bur
fine grit (red)
tapered flame shape
friction grip shank
Composite restorations, finishing/contour oclussal, facial and buccal
Bur 132EF-extra fine needle diamond
finishing
diamond bur
extra fine grit (yellow)
friction grip shank
composite restorations, finishing/contouring oclussal, cervical, lingual and buccal surfaces
Bur 8274- fine flame diamond
finishing
diamond bur
fine grit (red)
flame shape
friction grip shank
Composite restorations, finishing/contouring oclussal, facial, lingual and buccal surfaces
Bur 379F- football diamond
finishing
diamond bur
fine grit (red)
football shape
friction grip
crown prep finishing (lingual anterior teeth), composite restoration finishing all surfaces, all ceramic/PFM/Cad/Cam restorations, oclussal adjustment
Bur 845KR-016- medium modified flat-end diamond
indirect bonded
diamond bur
medium grit
modified flat end taper shape
friction grip shank
CAD/CAM inlays and onlays, oclussal/IP prep, removal of composite or ceramic inlay/onlay
Bur 8845KR-016- fine modified flat end diamond
indirect bonded
diamond bur
fine (red)
modified flat end taper
friction grip shank
CAD/CAM inlays/onlays, finishing of oclussal and IP prep, embrasure rest and guiding planes prep
Bur 845KR-025- medium modified flat end diamond
indirect bonded
diamond bur
medium grit
modified flat end taper shank
friction grip shank
CAD/CAM inlays and onlays oclussal prep, remove composite or ceramic inlay/onlay
Bur 8845KR-025- fine modified flat end taper diamond
indirect bonded
diamond bur
modified flat end taper shank
fine grit (red band)
friction grip shank
CAD CAM inlay/onlay finishing of oclussal preps
847KR-016- medium flat end taper diamond
indirect bonded
medium grit
modified flat end taper shape
friction grip shank
CADCAM inlay/onlay: IP box, all ceramic crown (axial reduction, shoulder butt joint margins), removal of composite/ceramic inlay/onlay
Bur 8847KR-016- modified shoulder flat end diamond
indirect bonded
diamond bur
fine grit (red)
modified flat end taper
friction grip
CAD CAM inlay/onlay: finishing IP box, all ceramic crowns finishing shoulder prep
Bur H336-016- modified flat end taper carbide
indirect bonded
carbide bur
fine (red band)
12 blades
modified flat end taper
friction grip shank
CAD CAM inlay/onlay: finishing of IP, all ceramic restorations: marginal finish
Bur 859- medium needle diamond
indirect cemented
diamond bur
medium grit
needle shape
friction grip shank
crown prep, break IP contact, veneer prep
Bur 856-014- medium round end tapered diamond
indirect cemented
diamond bur
medium grit
round end taper shape
friction grip shank
All ceramic zirconia reduction, PFM/CVC axial reduction, veneer prep, remove all ceramic except zirconia, porcelain veneer on PFM resto
Bur 856-016- medium round end tapered diamond
indirect cemented
diamond bur
medium grit
round end taper
friction grip shank
all ceramic/PFZ reduction, PFM/CVC reduction, veneer prep, remove everything but zirconia
Bur 8850- fine round end taper diamond
indirect cement
diamond bur
fine grit (red)
friction grip shank
all cermaic prep, margins and finishing, veneer prep
Bur 878K- medium modified round end taper diamond
indirect cemented
diamond bur
medium grit
modified round end taper (pointed tip)
friction grip shank
PFM, CVC. axial reduction and chamfer margins for metal. Removes everything but zirconia
Bur 6847- coarse flat end taper diamond
indirect cemented
diamond bur
coarse (green)
flat end taper shape
friction grip shank
PFM, remvoes zirconia crowns
Bur 10839- medium end cut diamond
indirect cemented
diamond bur
medium grit
flat end (end cutting)
friction grip shank
all ceramic, PFM crowns. refine and remove
Bur 379- medium football diamond
indirect cement
diamond bur
medium grit
football shape
friction grip shank
crown prep lingual of anterior teeth. CANNOT adjust crowns or cad cam restoration
FLDC5M Blue-Diacomp Feather Lite Intra-Oral Composite Polisher
polisher
medium grit (diacomp)
wheel shape
latch type
intraoral composite polisher
DC1M Blue-Diacomp Medium Point)
polisher
medium (diacomp)
point shape
intraoral composite polisher
FLDC5 Gray-Diacomp Feather Lite Gray Intra-Oral Composite Polisher
polisher
fine (diacomp)
wheel shape
latch type shank
intraoral composite polisher
DC1 Gray- diacomp gray fine point
polisher
fine (diacomp)
latch type shank
intraoral composite polisher
D209001 Brush- brush regular cup
polisher
fine
cup shape
latch type shank
intraoral composite polisher
What do you use for adjustment and polishing of all ceramic restorations and hybrid cad/cam restorations
usc intraoral ceramic polishing kit
USC composite polishing kit
FLDC5M BLUE
DC1M BLUE
FLDC5 GRAY
DC1 GRAY
D09001 BRUSH
Bur 379F- fine football diamond
IOCPK (intraoral c polish kit)
diamond bur
fine grit (red)
friction grip shank
• All-ceramic, hybrid CAD/CAM, and PFM restorations: occlusal adjustment
Bur 8379-fine football diamond
IOCPK
diamond bur
fine grit (red)
friction grip shank
• All-ceramic, hybrid CAD/CAM, and PFM restorations: occlusal adjustment
Bur W16DG Blue- dialite blue coarse point porcelain polisher
IOCPK
polisher
coarse (dialite blue)
point shape
latch type shank
All-ceramic, hybrid CAD/CAM, and PFM restorations: occlusal adjustment
FLW14M Pink- dialite feather lite pink medium porcelain polisher
IOCPK
polisher
medium grit (dialite pink)
latch type shank
All-ceramic, hybrid CAD/CAM, and PFM restorations: occlusal adjustment
W16DM Pink- dialite pink medium point porcelain polisher
IOCPK
polisher
medium grit (dialite pink)
point shape
latch type shank
All-ceramic, hybrid CAD/CAM, and PFM restorations: occlusal adjustment
FLW14F Gray- dialite feather gray fine porcelain polisher
IOCPK
polisher
fine grit (dialite gray)
latch type shank
All-ceramic, hybrid CAD/CAM, and PFM restorations: occlusal adjustment
W16D Gray- dialite gray point porcelain polisher
IOCPK
polisher
fine grit (dialite gray)
point shape
latch type shank
All-ceramic, hybrid CAD/CAM, and PFM restorations: occlusal adjustment
Burs to remove amalgam restoration
330 or 245
Burs to remove noble and non-noble alloy restorations
cross-cut carbide bur (FG1558)
What type burs are used to remove composite restorations
diamond burs
what type burs should be used to remove metallic restorations
carbide burs
burs to remove composites, GIC, liners, cements (tooth colored)
superficial layers: diamond burs
deep layers: round carbides
burs to remove indirect composite restoration (tooth colored)
medium or coarse grit diamond burs. shape of bur determined by cavity configuration
burs to remove high strength ceramics
coarse diamond bur
Bur FG1558
removal of restorations
carbide bur
6 blades cross cut
round end cylinder
friction grip shank
Removal of amalgams, sectioning of metal copings, frameworks, or full contour metal restorations.
single use bur
Crown removal burs
FG1558 (dispensary)
Diamond burs (847KR-016, 856-014,856-016,879K,6847)
Crown removal kit
Cutting off crown
cut tooth laterally down the middle before attempting removal