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Endodontics 1 > Isolation and File ID > Flashcards

Isolation and File ID Flashcards

1
Q

The ________ protects the patent
from swallowing or aspirating
instruments and materials.

A

rubber dam

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2
Q 
• ESSENTIAL FOR ENDODONTICS
• Defined as the “STANDARD OF CARE”
• ANYTIME YOU DO NOT USE IT YOU 
ARE SIMPLY LIABLE WITHOUT 
DEFENSE
A

Rubber dam

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3
Q 
• It is simply impossible to 
eliminate micro-organisms in the 
presence of saliva with its 
multitude of micro-organisms
• ONLY a properly applied \_\_\_\_\_\_ can insure the absence of 
saliva in the surgical field
A

Dental

Dam

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4
Q

Failure to eliminate salivary leakage by proper
placement of the rubber dam creates _________ which has the potential of turning a
simple, routine, uncomplicated RCT into life threatening
cellulitis by introducing additional micro-organisms
which can greatly complicate the infection.

A

salivary

contamination

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5
Q

Is it ever okay to leave a tooth open?

A

NEVER; salivary contamination

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6
Q

If saliva is not effectively sealed by your dam
placement, you can be assured that ______ will leak
into the mouth as you irrigate.

A

NaOCl

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7
Q 
Non-latex \_\_\_\_\_\_\_ is available in 
the Clinic and is 
necessary to 
prevent problems 
arising from latex 
allergies
A

Nitrile

Dam

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8
Q

Select a rubber dam which is radiolucent or radiopaque and

leave it in place when taking radiographs?

A

radiolucent

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9
Q

How many teeth should be isolated in endo?

A

only tooth treated

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10
Q

Rubber dam clamp # _____ is designed for an anterior tooth

A

212

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11
Q

the Clamp should rest at the cervical line ____

the height of contour to be adequately retained.

A

below HOC

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12
Q

T/F: Even after the Dam is released from the wings of the clamp, it may be
necessary to use some type of sealing agent to caulk around the tooth to
insure isolation.

A

True

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13
Q

_____ by Ultradent (available in dispensary) is being used to caulk
around the tooth to eliminate salivary contamination.

A

Oraseal®

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14
Q

T/F: If you cannot place an effective rubber dam, you cannot do a RCT on the tooth.

A

True

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15
Q

An _______ can be added as a matrix, for strength and to protect
against fracture.

A

orthodontic band

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16
Q 
If patient is a copious saliva producer, 
you might consider Rx \_\_\_\_\_\_\_\_ 15 
mg. (propantholine) ½-1 hour before 
appointment to control extraordinary 
salivary flow if not otherwise 
contraindicated by
patient’s med. history
A

Pro-banthine

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17
Q 
\_\_\_\_\_\_\_ file
– Takes a sharper edge
– Is fairly flexible up to #20
– Can be pre-curved easily to 
negotiate very curved canals 
(Retains the shape)
– Increases geometrically in 
stiffness as diameter 
increases
– Efficient when used by hand 
– Separates if overused or 
abused, usually with some 
warning ***
A

Stainless Steel Hand File

18
Q 
\_\_\_\_\_\_\_ file
– Edge not as sharp (Motor-driven 
for efficient shaping)
– Is extremely flexible (super-
elastic but difficult to pre-curve)
– Has nearly perfect shape memory 
(will NOT hold a curve)
– Works efficiently in engine driven 
handpieces 
– Separates if overused or 
abused, usually with NO 
warning ***
A

Nickel-Titanium Motor Driven

19
Q 
\_\_\_\_\_ files:
• Made of twisted tapered Stainless Steel
Wire  having a square, triangular or 
diamond shaped cross section.
Basically are SCREWS
A

SS K-Type Hand Files

20
Q

What is the color sequence for files after .10?

A 
White
Yellow 
Red
Blue
Green 
Black
21
Q

Should you use continual clockwise motion for hand files?

A

No

22
Q

____ files are basic to endodontic shaping. They are essential for:

  • Scouting the canal (#10 or #08)
  • Creating a Glide Path (#10 to patency and #15 to WL only)
  • Bypassing a ledge, blockage or separated instrument
  • Gaining length
A

Hand Files

23
Q

As you increase file size up to .60, how much larger does the diameter get?

A

.05mm

24
Q

As you increase file size over .60, how much larger does the diameter get?

A

.1 mm

25
Q

All standardized K-Type hand files are ____ Taper

A

.02

26
Q

Will hand or reciprocal files maintain a bend?

A

Hand files

27
Q

_____ files give us the GREATEST TACTILE SENSE of all
intra-canal shaping instruments and serve as Pathfinders &
basic instrumentation to negotiate Canal Curves & Blockages.

A

HAND FILES

28
Q

T/F: Don’t go to the next larger file until you have
worked the smaller file to the point that the next
larger file goes to the desired length WITHOUT
PUSHING

A

True

29
Q

______ Motion to Advance to Length

desired.

A

Watch-Winding

30
Q

______ filing from length desired to
remove (Press against alternate walls of canal and
pull back for a filing motion)

A

Circumferential Filing

31
Q

Can you place a straight file in a curved root?

A

NEVER

32
Q

Should you bend a hand file slightly before inserting?

A

Yes

33
Q

On the other hand, if you place a straight file in a
curved canal,(remember ALL canals are curved)
the file will track the outer wall of the curve and
gouge the canal at that point creating what we call
a ______

A

Ledge.

34
Q

If this happens what do you do?
-When a scouting file fails to advance but is LOOSE in
the canal; do not push but simply realize that the canal
takes a bend at this point.

A

• Remove the scouting file and place a 45 ̊ bend in the

most terminal flutes.

35
Q 
\_\_\_\_\_ files are the ONLY way to “scout” a 
canal.
-are the ONLY way to bypass a 
ledge or separated instrument.
-are the ONLY way to negotiate 
and smooth a tight curve to smooth the 
Glide Path or to Regain Lost Length
A

• Hand Files

36
Q

_____ files
They tend to PUSH MATERIAL AHEAD of the file
They are used in 3 passes to PREVENT pushing debris out
the end of the root where it would cause inflammation

A

MOTOR-DRIVEN RECIPROCAl Files

37
Q

On a vertex blue rotary file, what does the colored band mean?

A

File size

38
Q

On a vertex blue rotary file, what do the black bands mean?

A

Taper

39
Q

• Intended Use: Rotated in canal to entangle and remove vital pulp
organ
– SS Hand Instrument with plastic handle
– A round wire which is barbed by scoring and prying a tag of metal away from
the long axis of the wire
– If Broach becomes bound within the canal or forced around a canal curvature,
it will routinely break upon removal attempt ***
We do NOT recommend the use of ith except in large, straight canals

A

Barbed Broach

40
Q

The ____ is used only rarely as it is
effective only by advancement & rotation
and useful only in a straight canal. It is
dangerous when used in a curved canal
as ledging is the usual result of its
usage. The tip is cutting in nature.
It is made by twisting a square
or triangular wire but the angle between
the long axis of the instrument and the
cutting blade is small so it is ineffective
when used in a filing motion

A

REAMER

41
Q 
A Ground Round wire
Cuts aggressively on 
pull stroke
Vulnerable to rotation
Prone to fracture
Used by Faculty
A

Hedstroem file

Endodontics 1 (13 decks)

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