1. The document provides information about different types of dental instruments including their names, purposes, and characteristics. It includes questions to test knowledge of dental instrument terminology. 2. Various instruments are described such as mirrors, explorers, excavators, contra-angled instruments, and rotary burs. Their uses, parts, and distinguishing features like bevel types are outlined. 3. Test questions cover topics like instrument parts, types of bevels, uses of different instruments, and characteristics of rotary burs. The document aims to enhance understanding of the various tools used in dentistry.

1. The Student Quiz
LEC 1, 2&3 (DCP- Instruments)
(Lecture1)
Fill in the blanks:
1------------- is used for indirect visualization and to reflect the operating light and
to retract soft tissues.
2- -------------- are used to feel the tooth surfaces for defects and/or irregularities.
Also determine the hardness of exposed dentin. And for checking the margins of
restoration.
3-------------------- is a blunt or has
a small ball at the end.
4- ------------------- is the most efficient in cutting.
5-If the bevel’s acute angle is on the right side the instrument is a--------------
instrument.
Circle the correct answer.
1-Each hand instrument contains three parts which are( from bottom to up) :
a. shank, shaft ,blade or nib
b. shaft, blade or nib ,shank
c. shaft , shank, working end
2- The part that is grasped in the operator’s hand:
a. Shank
b. shaft
c.blade or nib
3- An example of a circumferential beveled instrument:
a. Spoon excavator
b. Hatchet
c. Chisel

2. (Lecture2)
Write the following answers:
1-the reason of having contra-angled instruments:
2-An instrument with the working part at an angle to the central axis of the shaft
is used for?
3-The three figures instrument has three digits the 3rd one indicates the
4- In a four figures instrument the angle is either 80 or 95 explain.
5- The last separate figure at the end of the shaft
Fill in the blanks:
1-The balance is at its maximum when using a --------------------------.
2-Enamel hatchets and bin-angle chisels are examples of ---------------------.
3-The cutting edge on an instrument is called a ------------------.
4-To differentiate between ----------- and ------------ we hold the instrument
downward facing the ground.
5-Only ----------- and ------------- are bi-beveled.
6- An instrument in which its blade is beveled in all edges or peripheries is called
--------------------------------.

3. Write T for true and F for false:
1-Instruments with two or more angles in the shank in one plane are described
as single plane instruments.
2-When the effective force applied by the instrument is in line with the direction of
the blade, the instrument is called a lateral cutting.
3-Lateral cutting instruments are have a curved blade called double-planned
instruments.
4-Single planned instruments are only used in a direct cutting instrument only.
5-Double planned instruments can only be used on a lateral cutting.
6-An excavator is used for carving.
Circle the correct answer:
1-Lateral cutting instruments are those in which the
force is applied at the __________ to the plane of the
blade and handle.
a. Base
b. Right angle
c. Lateral side
2-There are many types of bevels:
a. Single, Bi, triple and circumferentially-beveled instruments
b. Triple and Circumferentially beveled instruments
c. none of the above.
3-How can we know if the instrument is right or left lateral or mesial?
a. by checking the direction of the shaft
b. by checking the direction of the excavator
c. by checking the direction of the bevel
4-direct and reverse beveled are examples of :
a. Wedelstaedt chisels
b. GMT
c. Off-set hatchets
5-On the shaft of an instrument the numbers engraved indicates:
a. the specific use of an instrument and the numbers are in tenths

4. b. the specifc use of an instrument and the metric system is used.
c. the specific use of an instrument and the numbers indicate the length of
the shaft.
6-Angle formers and gingival margin trimmers are the only hand
cutting instruments with _________instrument formula.
a. four figures
b. one figure
c. two figure
7-It is like the regular hatchet, except the whole blade is rotated a quarter of a
turn forwards or backward around its long axis and they are convenient in
planning the buccal and lingual walls of posterior teeth.
a.GMT
b. Off- set hatchet
c. chisel
8-It is useful for cleaving undermined enamel and its uses are exactly the same
as all enamel chisels.
a. excavator
b. triangular chisel
c. off-set hatchet
9-They are mainly used to work on dentin. (excavators)
a. hatchet
b. chisel
c. none of the above
10-This form of excavator is used for delicate cutting within preparations,
especially in incisors.
a. hoe excavator
b. spoon excavator
c. hatchet excavator
11- Plastic instruments are made up of.
a. Stainless steel or aluminum
b. Plastic (hard plastic)
c. All of the above
12-this picture shows an /a

5. a. applicator
b. amalgam carrier
c. excavator
13- Teflon or titanium plated condenser
are used for :
a. amalgam restoration
b. gold foil resoration
c. composite restoration
Indicate the type of instrument:
1- They are mainly designed to cleave undermined enamel and to shape enamel
walls, their blades are relatively heavier and beveled on one side
only.
2-They are used as a scraper of dentin in the internal parts of cavities specially
the pulpal walls or floors.
3-They are single planned instruments that are similar to straight chisels but have
a slight curvature on their shank and it can be used to shape the internal walls of
dentin.
4-Are used to scoop out the cavities and usually they are rounded with a
concavity.
5- Are used to sharpen point and line angels and their cutting edge is like that of
a single hatchet.
6-They are used for splitting or cleaving undermined enamel from the buccal and
lingual margins of the occlusal cavities and on the buccal and lingual margins in
the proximal cavities where it is not possible to use a chisel.
7- Excavators that are used to cut mesial and distal walls of molars and
premolars..
8- It’s used for scooping out carious parts of the tooth and it can be used for
removal of marginal flashes of amalgam during carving.
9-It is a most helpful instrument for carving gold fail and
amalgam, specially for creation of proximal fossae and marginal
ridges.
10- instruments that are used to mix cements together are called.

6. 11-This photos shows a condenser which is used for?
12-This photo shows burnishes which are used for?
13-This photo shows a cleoid discoid carver and it’s used for?
14- Disposable scalpel blade
(Lecture 3)

7. Circle the correct answer
1-The most universally hand grasp used is:
a. the pen grasp
b. palm and thumb grasp
c. inverted pen grasp
2-instruments get dulled by:
a. Repetitive use
b. Frequent sterilization.
c. All of the above.
3-in any sharpening technique _______must be used:
a. Oil
b. Water
c. Wax
4-__________ are tools or attachments that are fitted in the hand piece and work
by energy delivered from a source of power.
a. mechanical instruments
b. rotary instruments
c.hand instruments
5-_________devised a foot engine that allowed the dentist to
keep both hands free while powering the dental drill.
a. Black
b. Airdent
c. technology
6-In a slow hand instrument we attach the bur that has a
a. screw
b. latch
c. magnet
7-The parts of a bur are:
a. head, shank, attachment
b. nib, shaft, shank
c. shaft , shank, nib
8- _________ burs generate much less heat
during cavity preparation because they
are more effective cutters, specially at
high speed.

8. a. carbide
b. steel
c. diamond
9- ______ burs are used only
at low speed ranges.
a. slow
b. steel
c. tungsten carbide
10-The more the flutes the
a. the quicker the operation
b. the louder the noise of the instrument
c. the smoother the finishing
11- Most of these types of instruments are of
great clinical importance, as they are used for
removal of hard tooth tissues (enamel) and
finishing and polishing most of restorations and they act by friction.
a. excavators
b. abrasives
c. high speed instruments
12- These dental stones are classified as :
a. diamond
b. carbide
c. aluminum oxide
13- __________are the attachment part which
carry the un-mounted abrasive tools.
a. Shank
b. Mandrels
c. Attachment end
14- Rubber implanted abrasives are used for:
a. polishing
b. carving
c. smoothing

9. Good luck to you all,and sorry for this elongated quiz!
Done by: Hessa Habib and Rasha Shehab