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Operative Dentistry > Quiz on Complex Amalgam > Flashcards

Quiz on Complex Amalgam Flashcards

(105 cards)

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1
Q

Indications for complex amalgams: for a “_______” restoration of a tooth has questionable pulp or periodontium.(EXT or RCT might be needed)

A

“control”

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2
Q

Indications for complex amalgams: patient cannot ______ a crown

A

afford

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3
Q

CONTRAindications for complex amalgams: Severe _______ problems

A

occlusal

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4
Q

CONTRAindications for complex amalgams: ________ important area

A

esthetically

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5
Q

CONTRAindications for complex amalgams: Cannot be restored properly due to _________ or functional considerations (contour, contacts, occlusion, inability to place a matrix)

A

anatomical

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6
Q

Complex Amalgam Restorations ADVANTAGES!– ________ tooth structure!

A

Conserves

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7
Q

Complex Amalgam Restorations ADVANTAGES!– One ________ instead of two as in a cast restoration

A

appointment

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8
Q

Complex Amalgam Restorations ADVANTAGES!– Less ________ than indirect restorations

A

EXPENSIVE

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9
Q

Complex Amalgam Restorations ADVANTAGES!– success rate at 5 years ___%-____% for amalgam vs. ____% for cast restorations

A

65%-72% for amalagam vs 84% for cast…so a viable alternative

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10
Q

Complex Amalgam Restorations disADVANTAGES :( Its not very structurally _______

A

durable

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11
Q

Complex Amalgam Restorations disADVANTAGES :( theres not much ______ so it can fall off

A

retention

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12
Q

Complex Amalgam Restorations disADVANTAGES :( Difficult to develop natural ______ and function

A

contours (pssshh, whatev’s)

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13
Q

Complex Amalgam Restorations disADVANTAGES :( Potential for pulp and root _______ and dentin ________ when placing pins for retention

A

perforation, microfracture

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14
Q

Complex amal-PREP DESIGNS! When the isthmus exceeds ____ the distance between the facial and lingual cusp tips

A

2/3

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15
Q

Complex amal-PREP DESIGNS! When you had to remove a _____ :(

A

cusp

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16
Q

Complex amal-PREP DESIGNS! Plus, (tip, or cap) a cusp when the facial or lingual extension exceeds _____ the distance from a primary _______ toward the cusp tip

A

2/3….primary groove (so when you remove 2/3 of a cusp on the interproximal extension, the cusp has to go)

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17
Q

Complex amal-PREP DESIGNS! You NEED ____ retention feature PER missing cusp!

A

1 retention feature per missing cusp!

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18
Q

Complex amal-PREP DESIGNS! How much of a NON-Fxn cusp needs to be removed to support the amalgam?

A

greater or equal to 1.5mm

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19
Q

Complex amal-PREP DESIGNS! How much of a FUNCTIONAL cusp needs to be reduced to support the amalgam?

A

greater than 2mm (2-3mm)…shit needs to be THICK yo

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20
Q

If you get this wrong, I will kill you. ON the mandibular arch, the ______ cusps are the functional cusps.

A

buccal

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21
Q

If you get this wrong, I will kill you. ON the maxillary arch, the ______ cusps are the functional cusps.

A

lingual

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22
Q

Complex amal-PREP DESIGNS! Cusp reduction should be extended just below the extension of the ______ or ______ _______.

A

facial or lingual groove

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23
Q

Complex amal-PREP DESIGNS! DO NOT end the prep cavo-surface in a __________. End either BEFORE or AFTER it.

A

facial or lingual groove (i think i made this mistake in lab)

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24
Q

Complex amal-PREP DESIGNS! Opposing vertical walls should ________ slightly to the occlusal.

A

converge

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25
Complex amal-PREP DESIGNS! Pulpal and gingival floors and tipped cusps should be _____ and ________ to the long axis of the tooth.
flat and perpendicular
26
Complex amal-PREP DESIGNS! All _______ margins are SHARP and well defined
Cavo-surface
27
Complex amal-PREP DESIGNS! Axial and occlusal- gingival "____" should be developed where possible
steps (like our "shoulder" that we put into it)
28
Complex amal-PREP DESIGNS! All internal line angles are _______
rounded
29
Complex amal-PREP DESIGNS! Angle of departure is ___ degrees (no _______ enamel)
90 degrees.....undermined
30
Complex amal-PREP DESIGNS! Auxiliary retention is provided by using ______, ______, or ____..... or a combination.
slots, troughs, or pins
31
Complex amal-PREP DESIGNS! Slot/trough placement--May be continuous or segmented, (_____ slots resist horizontal force as well as longer ones)...DEPTH of the slot is _____
shorter..the depth of the 34D (0.8mm)
32
Complex amal-PREP DESIGNS! All retention features are placed in ______...more specifically placed ____mm past the ____. (following the contour of the _____)
dentin...0.5mm...DEJ....DEJ
33
Complex amal-PREP DESIGNS! the slot you put in should have _______ walls, thank you 34D
convergent
34
Complex amal-PREP DESIGNS! Putting pins in _____ treated teeth is actually CONTRAINDICATED & AGAINST the Standard of Care!
endodontically
35
The most frequently used pin is the ________ type. They are the MOST _______!
self-threading...retentive
36
SLOTS VS PINS- There is ________ in the retention provided by slots and pins in vitro and in vivo
NO SIGNIFICANT DIFFERENCE
37
SLOTS VS PINS-_______ retention is used in preparations lacking vertical walls for steps or boxes
PINS
38
SLOTS VS PINS- _____ are used in preparations with short clinical crowns and in cusps that have been reduced 3-4 mm for amalgam
SLOTS
39
SLOTS VS PINS- ____ are less likely to create micro-fractures than are _____.
Slots....pins
40
SLOTS VS PINS-____ remove more tooth structure
Slots
41
SLOTS VS PINS- Failure of slot in ______ retained amalgam will be IMMEDIATE LOSS of the amalgam!
DENTIN
42
SLOTS VS PINS-_______ elicited an inflammatory pulpal response if placed within ___mm of the pulp; ____ placed in the same location did not!
Self-threading pins....0.5mm..slots
43
SLOTS VS PINS-_____ are more likely to result in perforations of the pulp or side of the tooth
pins
44
SLOTS VS PINS-Failure of a pin retained amalgam can be slip or fracture at first (but not fall out) and later very catastrophic due to ______ beneath it!
PINS=Recurrent Caries!
45
SLOTS VS PINS- Amalgam TENSILE and HORIZONTAL strength is weakened by ____
pins
46
SLOTS VS PINS-Believe it or not: _____ are NOT analogous to steel rebar reinforced concrete
PINS
47
SLOTS VS PINS- ______ of the restoration increases as the number of pins increases, but an excessive number of pins can ______ the tooth and significantly weaken the amalgam (more is not necessarily better)
retention...fracture
48
Pin Placement Technique: The pin hole goes ___mm past the DEJ.
0.5mm
49
Pin Placement Technique: Pin hole prepared on a _____ surface
flat!
50
Pin Placement Technique: Provide a minimum ____ mm CLEARANCE around the circumference of the pin for adequate amalgam condensation
0.5
51
Pin Placement Technique: 1 pin per missing _______
AXIAL LINE ANGLE, place it at the line angle!
52
Anatomical Features to AVOID when placing pinholes!!! The PROMINENT M concavity of the _______ (tooth perforation)
max 1st PM
53
Anatomical Features to AVOID when placing pinholes!!! Midfacial and midlingual BIFURCATIONS of _______ (tooth perforation)
mandibular molars
54
Anatomical Features to AVOID when placing pinholes!!! Mid facial, midmesial, and middistal FURCAITONS of _______ (tooth perforation)
maxillary molars
55
Anatomical Features to AVOID when placing pinholes!!! MF CORNERS of _____ AND ______ (possible pulpal penentration)
maxillary and mandibular molars
56
MORE Pin Placement Technique! Start with a _____ bur PILOT hole where you want the pin to start
1/4 round bur
57
MORE Pin Placement Technique! Use a ______ to align drill before placement
perio probe
58
MORE Pin Placement Technique! _______ placement of pins enhances the retention of the amalgam...interesting!
Non-parallel
59
MORE Pin Placement Technique! Rotate at _______ speed (300-500 rpm) and apply pressure preparing the pinhole in one or two insertions until the depth- limiting portion is reached (____mm)..oh and USE ______
low speed...(2.0mm)...USE WATER!
60
MORE Pin Placement Technique! NEVER _____ the drill in the pinhole...Never _______ the drill unless only used to half the depth the first time
stop....reinsert
61
Can you bend pins?
yes, with a "special instrument"
62
Pin placement ERRORS :O Sudden loss of RESISTANCE to the pin twist drill and the evidence of _____ IN the pinhole means you _______!
blood....perforated
63
Pin placement ERRORS :O When do I inform the patient?
At the end of the appointment
64
Pin placement ERRORS :O Whats next? Ideally ______ treatment should be done on compromised teeth if the pulp is exposed.
endodontic
65
Pin placement ERRORS :O Whats next? ________ may be placed over the pinhole and another hole prepared ___-__ _ mm away.
CaOH ( Dycal or Life)....1.5-2.0mm away
66
Pin placement ERRORS :O Perforations occlusal to the gingival attachment: 1. _____ the pin off FLUSH with the tooth surface. 2. Same as in 1 and extend a ____ restoration beyond the perforation 3. Remove the pin, ENLARGE the hole and restore with ______
cut...cast...amalgam
67
Pin placement ERRORS :O Perforations APICAL to the attachment: 1.Surgical ____, remove bone, enlarge hole and place amalgam or ____ 2. _________ surgery and extend a cast restoration below the perforation
flap...MTA(portland cement!)...Crown lengthening
68
You can use amalgam for a endo treated tooth for a crown build up when the pulp chamber height is ___-___mm. Do you need a post?
4-6mm, no post needed!
69
For an amalgam core build up, get ___-___mm into the canal orifice below the CEJ
4-5mm
70
Which type of amalgam do I use when making a crown buildup? Why?
Megalloy-it is STRONGER and SETS FASTER than dispersalloy!
71
Which is higher, composite bonded to enamel or amalgam bonded to enamel?
Composite to enamel bond strength is 20-25 MPa, amalgam bonded to enamel is 3-10 MPa...BOOM
72
Bonding resin may interfere with the self ______ capability of amalgam
SEALING
73
complex amalgam-THE MATRIX: When using a Tofflemire placed from a facial approach, keep the slot in the _____ of the tooth, and the slot is going to be opposite of the ______.
middle...missing cusp
74
complex amalgam-THE MATRIX: When needing to place the Tofflemire Lingually, use an ______ Tofflemire and place wedges on _______ sides.
angled...opposite
75
complex amalgam-THE MATRIX: What do I use when my Tofflemire slot is exposed?!
Freak out! Life is over!! Jk. Cut a matrix band and place it over the slot
76
complex amalgam-THE MATRIX: What type of matrix can I use in lieu of the Tofflemire?
a Garrison PINCH matrix!
77
LETS DROP SOME KNOWLEDGE: Which amalgam is Spherical?
Megalloy
78
LETS DROP SOME KNOWLEDGE: Which amalgam is AD-Mixed?
Dispersalloy
79
LETS DROP SOME KNOWLEDGE: Which amalgam has LESS condensation pressure?
megalloy
80
LETS DROP SOME KNOWLEDGE: which amalgam has MORE condensation pressure?
dispersalloy
81
LETS DROP SOME KNOWLEDGE: Which amalgam has LESS mercury?
megalloy
82
LETS DROP SOME KNOWLEDGE: Which amalgam has MORE mercury?
dispersalloy :(
83
LETS DROP SOME KNOWLEDGE: Which amalgam sets faster?
megalloy
84
LETS DROP SOME KNOWLEDGE: which amalgam sets slower?
dispersalloy
85
LETS DROP SOME KNOWLEDGE: Which amalgam has NO ZINC? What does this mean?
Megalloy...no delayed expansion and no H2 Gas
86
LETS DROP SOME KNOWLEDGE: which amalgam has ZINC? what does this mean?
dispersalloy....NO WET environments!
87
LETS DROP SOME KNOWLEDGE:Which amalgam is stronger?
megalloy
88
Amalgam Selection: Unable to place RD and isolation is poor...
Megalloy---dispersalloy has ZINC and is therefore not comparable with WET invironments
89
Amalgam Selection: Strong Contacts are going to be difficult.
Dispersalloy-didnt give a good reason
90
Amalgam Selection: I need amalgam to fill in the intricate grooves and slots
megalloy
91
Amalgam Selection: I need to prepare the crown on the same build-up appointment
megalloy
92
Amalgam Selection: It’s my first time and I’m worried about the amalgam hardening on me before I complete the carving.....!
dispersalloy
93
What is the KEY move in forming the cusp in our bulk amalgam?
form the cusp with the DOUBLE ENDED PLASTIC INSTRUMENT
94
What instrument do I use to make the occulsal embrasures?
explorer
95
What instrument do I use to REBURNISH the amalgam where the missing cusp is?
double ended plastic instrument
96
OUR complex amalgam preps #14: Isthmus is ___mm wide and ____ mm deep
1.5mm...2.5mm
97
OUR complex amalgam preps #14: ___ to ___mm contact separation
0.5 to 1.0mm
98
OUR complex amalgam preps #14: ___mm on the ML cusp removal
3.0mm
99
OUR complex amalgam preps #14: Retention trough placed along mesial-lingual line angle ___ mm away from exterior surface of enamel and ____ mm deep.
1.0mm (which was 0.5mm in our lecture?!?!)...1.0 mm deep (depth of 34D)
100
OUR complex amalgam preps #14: Extend prep BEYOND the _____ groove
lingual
101
OUR complex amalgam prep #30: Pulpal floor at least ___ mm deep
2.5mm
102
OUR complex amalgam prep #30: Lingual cusps removed to level of _____ floor
pulpal
103
OUR complex amalgam prep #30: Lingual SHOULDER placed ___ mm below pulpal floor
1.0mm below
104
OUR complex amalgam prep #30: Small circular cut into lingual axial wall to make space for ____, and there is AT LEAST ____mm of space between pin and axial wall.
the PIN...0.5mm
105
OUR complex amalgam prep #30: The pin at least ___ mm away from external enamel, and it is placed at the _____ of the tooth.
1.0mm...line angle

Operative Dentistry (25 decks)

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