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