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Level 4. Hand instruments Dr lobna abo elnasr. Reference book Dental instruments pocket guide by linda R bartolomucci Art and science 5 th edition. 1- diagnostic instrument. A- mirror Function : provide indirect vision Retraction for lips , cheeks, and tongue - PowerPoint PPT Presentation
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HAND INSTRUMENTSDR LOBNA ABO ELNASR
Level 4
Reference bookDental instruments pocket guide by linda R
bartolomucciArt and science 5th edition
1- diagnostic instrument
A- mirrorFunction: provide indirect visionRetraction for lips , cheeks, and
tongueReflection og light into mouth
B- explorer (probe)Function :Examine tooth for
caries , calculus,and furcation involvement
hook
Back action (orban)
C-forceps (plier( or tweezer)
Function:Hold and transfer materials
from and into oral cavity
2- enamel cutting instrument
A- enamel hatchet:FunctionRemoval of undermined enamelShaping to external walls
B-enamel hoe:Function:Remove undermined
enamel from walls in cavity preparatyion
C- wedelstaedat chisel
Function :Removal of
undemined enamel
D- gingival marginal trimmer-mesial and distal
Function:Bevel for cervical
margins mesial and distal
Bevel to axiopulpal line angle
E- spoon excavator:
Function:Removal of soft
caries, temporary crown,temporary cement, permenant crown
Claw like called (spoon)
discoid
SPOON
Amalgam instruments
1- amalgam carrier
Carry and dispense amalgam for cavity
Double ended Single ended
called plunger style or gun style
Plunger style
2- duppin dish(well)
Function : hold amalgam before it is ploaced in preparation
Holding amalgam while loading amalgam carrier
3- condenser (plugger)
Function:Pack and condense
amalgam into cavity or even temporary or another restorative material it may be smooth or serrated
4- liner applicator
Function:Place calcium
hydroxide in a cavity preparation
5- burnisherFunction:Smooth amalgam
after condensationDo initial carving
for amalgamContour
uncontoured matrix band
Egg ball ( football) ( beaver tail)
ball
Acorn(diamond)
6- hollen back carver
Function:Carve amalgam
occlusal and interproximal surface
7-discoid cleoid carver
Function:Carve occlusal
anatomy in amalgam restoration
cleoid
discoid
8- tofflemire matrixFunction:Maintain stability of matrix during
restoration of class 2
Guide slot
Diagonal slot
spindleInner (large ) knob
Outer (small) knob
Parts:Guide slot for right and leftDiagonal slot:towords gingiva sliding up and downon the spindleSpindle : hold matrix in placeInner knob adjust size of the band to fit around toothOuter knob:at the end of the spindle to tighten or loose the matrix
9- matrix band:Function replace missing proximal wall to
restore class 2
Universal band for all posterior
MOD MATRIX FOR MOLAR AND PREMOLAR
CEMENT SPATULAFUNCTION :
CEMENTATION OF BASE ON GLASS SLAB
Composite restorative material
1- plastic filling instrument
Function:Carry
composite material into cavity
Place , condense and carve composite
2- applicatorFunction:apply
conditioner , primer or bonding system
3- finishing stripFunction Finish and smooth interproximal surface of restoration
Rubber dam instruments
1- dam sheet Function : Isolation of teeth for dental work
2- punch:Function : punch holes in dental damIt has table of 5 holesNo 5:anchor tooth (largest)No 4:molarNo3:premolarNo 2:upper anteriors upper and lower canineNo 1: lower central and lateral
3- forcepes:Function : to place
and remove the clamp
4- frame:Function : hold dam away from teeth it may be plastic or metal
5- clampFunction: anchor and stabilize the dam
212 ANTERIOR CLAMP
Dental hand piece
1- high speed hand piece
Function cut in the toooth removing decay making cavity preparation
Air turbine with water cooling system 2 or 4 holes
May be push button or with bur changer
2- low speed motorfunction:used with slow speed attachment,with straight handpiece with long shank bur
3-slow speed motor with contra angle handpieceFunction:with low speed hand piece removal of caries , polishing of teeth and restoration
Dental burs and rotary attachment for handpiece
Bur:Function: used with
high or low speedComposed of head ,
neck, shankShank end
determines which handpiece to be used straight shank, latch type, friction grip
1- round burFunction : removal
of caries from tooth structure
Open access for endodontic treatment
Place retention in cavity preparation
2-pear shape bur
Function: open tooth for restoration, removal of caries
Most common 330, in composite restoration
4- invert cone bur:Function : removal of
caries make retention in
cavity preparation
5- straight fissure bur- plain cut
Function:cut cavity preparation,retention grooves
6- tapered fissure bur- plain cutFunction:Cut for cavity preparation, place retention
grooves in wallsCommonly 169, 271 it may have short or
long shank
8- tapered fissure bur cross cutFunction: cut cavity preparation, place
retention grooves or locks
tapered
straight
9-Finishing burFunction:To finish composite restorationit may be
carbide12 fluted carbideDiamond fine one with yellow strip
10-flat end taper diamond
Reduction of tooth for crown to make shoulder finish line
From superfine to course grit designed by color band on the shank
11- round end tapered (TR) diamond
Function : preparation of tooth for crown to make chamfer finish line
12- flame diamond Function reduction of tooth
for crown for subgingival margins
Superfine for finishing restoration
13-wheel diamondFunction:Reduction of tooth for
crown on lingual surface and incisal edge
The names of most common shaped of bur either carbide or diamond
14- rubber pointFunction:polish of restoration composite , amalgamTypes:Brown points: abrasive Green point les abrasiveWhite (point) polishing point It may be friction gripOr latch type
Latch typeFriction
grip
15- lab acrylic burFunction:Cut models or trim acrylic
in labAttached for straight hand
piece
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