The document summarizes different types of dental instruments used in dentistry. It describes cutting instruments like chisels, hatchets and scalers and non-cutting instruments like mirrors, probes and tweezers. It also discusses various parts of instruments like handles, shanks and blades. The document provides details on different types of chisels, excavators and other instruments along with their functions. It concludes with discussing grips used for holding instruments.
The presentation provides you with all the information required about various instruments used in conservative dentistry along with some information about a few as well along with exact picture of the instrument. It also contains basic knowledge about instruments, i.e. instrument design, instrument formula etc.
The presentation provides you with all the information required about various instruments used in conservative dentistry along with some information about a few as well along with exact picture of the instrument. It also contains basic knowledge about instruments, i.e. instrument design, instrument formula etc.
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5. CARBON STEEL
• More corrosion
tendency.
• Harder than stainless
steel.
• It loses keen edge
slower than stainless
steel.
STAINLESS STEEL
• Less corrosion
tendency.
• Less comparatively.
• It loses keen edge
quicker during much
use.
6. • Most of the instruments are composed of
the following parts:
• Handle
• Shank
• Blade/Nib
7. • It is used to hold the instrument.
• They are available in various sizes and
shapes.
• It may be smooth or eight sided and serrated.
• On handle of the instrument, the instrument
formula and manufacturer’s name are written.
8. • It connects the handle with the working point
or nib of the instrument.
• It is smooth, round or tapered.
• It may be straight or bent for better control of
working point when the force is applied.
• It has one or more angles to avoid twisting of
the instrument.
9.
10. • Working part of the instrument.
• Connected to the handle by
shank.
• Each blade has a cutting edge
that is the working end.
11. • Black classified all instruments according to:
• FUNCTION: Excavator.
• MANNER OF USE: Hand condenser.
• DESIGN OF WORKING END: Hatchet
• SHAPE OF THE SHANK: Mono-angle, bin
angle, contra-angle.
• These names were combined to form the
complete description of the instrument e.g, bin-
angle spoon excavator
12. • Hand cutting instruments have formulas
describing the dimensions and angles of
working end. Placed on the handle as three or
four figures.
13. • For instruments in which the primary
cutting edge is at a right angle to the
long axis of the blade.
14-10-16
• 14: Width of the blade (in tenths of
mm)
• 10: Length of the blade (in mm)
• 16: Angle (in centigrade) made by long
axis of the blade and the long axis of
the handle
14. 15-95-10-7
• 15: Width of the blade (in tenth of mm)
• 95: Primary cutting edge angle
(in centigrade)
• 10: Length of the blade (in mm)
• 7: Angle the blade makes with the
long axis of the handle (in
centigrade)
15. • Most cutting instruments have on the end of
blade a single bevel that forms the primary
cutting edge.
• Additional two bevel extends from primary
cutting edge for the length of the blade.
• This allows cutting in three dimensions.
16. CHISELS:
• Used primarily for cutting enamel
• Used with push motion.
• They are grouped as:
Straight, slightly curved or bin-
angle
Enamel hatchets
Gingival margin trimmer
17.
18. • Used primarily in anterior teeth, for
preparing retentive areas and sharpening
internal line angles.
• To remove unsupported enamel
• It comes as right and left types for use on
opposite sides of the preparation
• Used with push, pull & vertical motion.
19. • It is used to trim, smooth, and shape the gingival
floor of a cavity preparation.
• It is also used for rounding or beveling of the
axiopulpal line angle.
• Used with lateral scraping motion.
20.
21. • Used to clean and smooth floor and walls in cavity
preparation and forming line angles.
• Used with a pulling motion
• Cutting edge or blade nearly perpendicular to handle.
22. • If the angle of the blade is less than 12.5 centigrade, it is
mono-angle chisel & if it is more than 12.5 centigrade, it
is hoe.
23. • Primarily used for sharpening internal line angles and
creating retentive features in dentine in preparation for
gold restorations.
• Used in 3 motions vertical, push and pull.
24. • Used to remove
Soft carious dentine
Temporary crowns
Temporary cement in temporary restoration
Permanent crown during try-in
• Discoid: Cutting edges are circular
• Cleoid: Cutting edges are claw like
25.
26.
27. MOUTH MIRROR:
• To reflect light in the mouth
• To retract lips, cheeks, and tongue
• To provide indirect vision
28. • It is used to examine caries, calculus, furcation.
• Variety of sizes and types
Orban
Pigtail
Shepherd’s hook
29. • To grasp or transfer items and/or material into
and out of the oral cavity.
• Plain or serrated tips.
• Pointed or rounded tips
30.
31. DYCAL APPLICATOR
• To place calcium hydroxide or glass ionomer in
cavity preparation.
32. • It is used for mixing cements and carrying
materials.
33. • AMALGAM PLUGGER
• To carry and dispense amalgam for cavity preparation
• Single or double ended
34. CONDENSER
• Used to pack and condense amalgam into cavity
preparation
• Single or double sided
• Smooth or serrated ends
• Round or flat
• Small or large sizes
35. • Used to smooth amalgam after condensing.
• Burnish amalgam.
• It is also used to contour matrix band before
placement.
• It may be single or double ended.
36.
37. • To carve occlusal anatomy into amalgam
restoration
• Single or double ended.
38.
39. • Modified pen
• Inverted pen
• Palm and thumb
• Modified palm and thumb