Instrument ID

air-driven hand piece

compressed air is directed onto a small turbine inside the head of the hand piece. speed depends on airflow and air pressure

electric hand piece

an electric micromotor generate mechanical rotation. the motor drives a system of gears inside the contra-angle.

air-driven pros

lower cost

lighter in weight

head size is smaller

electric pros

quieter

high torque - consistent and powerful cut

control of RPM

slow speed

less than 20,000 rpm

medium speed

20,000-100,000 rpm

high speed

over 100,000 rpm

air driven high speed turbine picture

what type of burs fit into the air-driven turbine high speed

friction grip

air driven slow speed picture

1:1 contra-angle friction grip or latch

used for finishing, endo, or caries removal

straight nose cone

extra-oral use and prophy angle

torque multiplier

electric hand piece picture

1:5 friction grip speed-increasing contra angle

red

electric high speed

1:1 latch contra-angle

blue

electric slow speed

finishing, polishing, endo

Straight nose cone electric

extra-oral use and prophy angle

friction grip

smaller hole

latch

bigger hole

straight shank

Round burs

1/4

2

4

6

8

fissure burs

256

557

pear burs

329

330

245

oval/football bur

7404

7406

tapered finishing bur

tapered edge with more blades

169L

7801

7901

48L

football finishing bur

7404

7406

types of cutting for burs

blade (carbide)

abrasive (diamond)

blade bur

diamond bur

sparkles!!!

cutting instruments

used for caries removal and finishing of preparation

excavators, chisels, hatches, marginal trimmers

non-cutting instruments

for placing materials and finishing restorations

condensors, burnishers, carvers, composite instruments, spatulas

handle of instrument

shank of instrument

blade of instrument

first number (three number system)

width of blade - 1/10 mm

second number (three number system)

length of blade - mm

third number (three number system)

blade angle - degrees centigrade

first number (four number system)

width of blade - 1/10 mm

second number (four number system)

angle of cutting edge to the long axis of the angle

greater than 90 degrees

distal

less than 90 degrees

mesial

third number (four number system)

length of blade - mm

fourth number (four number system)

blade angle - degrees centigrade

mirror #4

used in less dominate hand to view indirectly into the mouth

pigtail explorer

feel surface of the tooth

UNC periodontal probe/Sheperds hook explorer

UNC periodontal probe

probe and measuring

sheperds hook explorer

feel texture

cotton pliers

grabbing things

spoon excavators (small and large)

remove decay and caries

condensers (small and large)

cleoid/discoid carver

Double-ended instrument used for excavating or carving

hollemback carver

carving

walls carver

carving

Wiland Interproximal Carver

remove excess material

football/ball burnisher

acorn/ball burnisher

hatchet

cut tooth

finish edges of prep

marginal trimmers (mesial and distal)

composite instrument

packing material

amalgam carrier

cement spatula

miller articulating paper holder

scalpel

tofflemyer

calcium hydroxide placement instrument

hemostat

scissors