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PROSTHO > 13. Dls > Flashcards

13. Dls Flashcards

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1
Q

done right after tooth preparation to accurately copy the tooth preparation

A

TISSUE MANAGEMENT

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2
Q

upon taking the impression, rubber impression materials are used as they require low contamination of saliva or any other oral fluids

A

TISSUE MANAGEMENT

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3
Q

after the teeth are prepared and an interim restoration has been made, the health of the surrounding soft tissues is re-evaluated

A

TISSUE HEALTH

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4
Q

to avoid periodontal disease, formation of plaque and tartar, we cannot place the final restoration when there is ongoing tissue inflammation because tissue will progress to gingival recession and eventually there will be tooth mobility if periodontal disease is not treated

A

TISSUE HEALTH

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5
Q

prior to prosthodontic final restoration, we should be able to restore good health in the surrounding tissues so that it will not affect your final restoration

A

TISSUE HEALTH

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6
Q

periodontal disease must be treated and resolved before fixed prosthodontics treatment is initiated

A

TISSUE HEALTH

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7
Q

most effective method of moisture control

A

Rubber Dam

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8
Q

isolate a tooth in order to show the preparation

A

Rubber Dam

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9
Q

indicated when all margins are
supragingival

A

Rubber Dam

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10
Q

isolates teeth and prevent saliva/oral fluids from contaminating the operating field

A

Absorbent Cotton Rolls

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11
Q

→ also used together with the rubber dam
→ placed on areas where salivary ducts are located to absorb the saliva
produced

A

Absorbent Cotton Rolls

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12
Q

helps saliva control during impression making

A

Local Anesthesia

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13
Q

indicated when saliva control is especially difficult to achieve

A

Antisialagogue

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14
Q

What are the displacement of tissues?

A

MECHANICAL METHOD

CHEMICAL METHOD

CHEMICAL DISPLACEMENT

DISPLACEMENT CORD

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15
Q

→ widely used
→ most effectively achieved by placement of a cord (generally
impregnated with a chemical agent)

A

MECHANICAL METHOD

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16
Q

the cord is pushed into the sulcus and mechanically stretches the circumferential periodontal fibers

A

MECHANICAL METHOD

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17
Q

alternatively, foam or paste systems can be used, alongside with directed pressure

A

MECHANICAL METHOD

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18
Q

involves treatment of the string with one or more number of chemical compounds that will induce temporary shrinkage of the tissues and control the bleeding and fluid seepage

A

CHEMICAL METHOD

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19
Q

CHEMICAL METHOD

chemicals used along with retraction cords are classified as:

A

Vasoconstrictors

Astringents

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20
Q

Astringents

A

ferrous sulfate & ferric chloride

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21
Q

Vasoconstrictors

A

epinephrine

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22
Q

sulci can be enlarged better with a chemically impregnated cord or a cord dipped in an astringent (ex.: Hemodent)

A

CHEMICAL DISPLACEMENT

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23
Q

these materials contain aluminum or iron salts and cause transient ischemia and shrinking of the gingival tissue

A

CHEMICAL DISPLACEMENT

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24
Q

Advantages

Good tissue displacement Minimal tissue loss
Good hemostasis

A

Epinephrine

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25
Disadvantages Systemic reactions of patients with cardiovascular issues (uncontrolled blood pressure may cause excessive bleeding) Epinephrine syndrome
Epinephrine
26
Advantages Minimal tissue loss Extended working time
Alum
27
Disadvantages Less hemostasis & tissue displacement
Alum Disadvantages
28
Advantages Minimal tissue loss Good hemostasis
Aluminum chloride
29
Disadvantages Local tissue destruction
Aluminum chloride
30
Advantages Compatible with aluminum chloride Good displacement
Ferric sulfate
31
Disadvantages Non-compatible with epinephrine Tissue discoloration
Ferric sulfate
32
Advantages Good tissue response
Tannic acid
33
Disadvantages Less displacement Minimal hemostasis
Tannic acid
34
even so, on cord removal, the sulcus closes quickly (less than 30 seconds)
DISPLACEMENT CORD
35
work fast and take advantage of the exposure of the shoulder
DISPLACEMENT CORD
36
some astringent solution can expand the sulcus
DISPLACEMENT CORD
37
therefore, the impression must be made immediately
DISPLACEMENT CORD
38
SURGICAL METHODS are?
ELECTROSURGERY SOFT TISSUE LASER ROTARY GINGIVAL CURETTAGE
39
electric cutting machine (also used in dermatological field)
ELECTROSURGERY
40
denotes surgical reduction of sulcular epithelium using an electrode to produce gingival retraction
ELECTROSURGERY
41
CONTRAINDICATIONS → patients with cardiac pacemaker → patients with delayed wound healing o refer patient to hematologist → patients on steroid therapy o need to have medical clearance prior to performing dental procedures → in the recently irradiated area
ELECTROSURGERY
42
Advantages → clear operating areas without or no bleeding → healing by primary intention → less tissue loss after healing
ELECTROSURGERY
43
Disadvantages → unpleasant odor → slight loss of crestal bone → burn mark on the root surface → not suitable for thin gingiva
ELECTROSURGERY
44
also useful for tissue contouring procedures
SOFT TISSUE LASER
45
enable predictable removal of tissue by creating a trough around the prepared tooth
SOFT TISSUE LASER
46
→ quite expensive → advanced technology
SOFT TISSUE LASER
47
Advantages → minimum pain or discomfort → minimum or no anesthesia → lesser chair time → reduced postoperative complications
SOFT TISSUE LASER
48
Disadvantages → overuse causes shrinkage of tissue and results in exposure of crown margin → quite expensive
SOFT TISSUE LASER
49
technique of using rotary diamond instruments to enlarge the sulcus
ROTARY GINGIVAL CURETTAGE
50
it involves preparation of the tooth subgingivally while simultaneously curetting the inner lining of the gingival sulcus
ROTARY GINGIVAL CURETTAGE
51
be careful in manipulating because you might cut the crest since the crest is where you hide the junction of your prosthesis and tooth surface
ROTARY GINGIVAL CURETTAGE
52
the goal is to eliminate the trauma from pressure packing and the need for electrosurgical procedures
ROTARY GINGIVAL CURETTAGE
53
chemomechanical: o using retraction cord and epinephrine or different astringent solutions
ROTARY GINGIVAL CURETTAGE
54
indicated in patients with a gummy smile whose gingival architecture and biotype could result in recession with more aggressive retraction methods
SINGLE CORD
55
“gummy smile”: patients whose gums are seen when smiling
SINGLE CORD
56
indicated in patients with shallow sulcus due to reduced biologic width
SINGLE CORD
57
the resultant recession could have significant aesthetic consequences → be careful when manipulating the gingiva
SINGLE CORD
58
0
big
59
00
smaller
60
000
smallest
61
used in cases wherein multiple tooth preparations is done
DOUBLE CORD
62
indications: o impression of multiple prepared teeth o when tissue health is compromised o excess gingival fluid exudates
DOUBLE CORD
63
CLASSIFICATION OF RETRACTION CORDS
Configuration Surface Finish Chemical Treatment Number of Strands Surface Texture Thickness
64
→ knitted → braided → twisted
Configuration
65
→ waxed → unwaxed
Surface Finish
66
→ impregnated → plain
Chemical Treatment
67
→ single → double-string
Number of Strands
68
→ wet → dry
Surface Texture
69
→ 000,00,0,1,2,3
Thickness
70
interlocking loops
KNITTED
71
longitudinally
KNITTED
72
→ elastic → transversely resilient
KNITTED
73
→ one of the best retraction cords used now
KNITTED
74
→ flexible → multistrand
BRAIDED
75
→ does not separate when inserted into the sulcus → easy to use → also good to use
BRAIDED
76
allows the dentist to customize the cord as individual strands can be removed
TWISTED
77
→ common in cheaper brands → easily dislodge in the sulcus → does not stay
TWISTED
78
→ use of epinephrine or stringent solution A. Impregnated B. Plain
A
79
no chemical incorporated in retraction cord A. Impregnated B. Plain
B
80
000 Color?
Black
81
Color? 00
Yellow
82
Color? O
Purple
83
Color? 1
Blue
84
Color? 2
Green
85
Color? Red
3
86
Advantages → asset during tooth preparation as it exposes the finish line → excellent impressions are obtained due to fluid control
RUBBER DAM
87
Disadvantages → useful only when limited number of teeth in one quadrant are being restored → used in simple preparations with minimal subgingival preparations
RUBBER DAM
88
without the technology of retraction cords, this was mainly used in the 1900s
COPPER BRAND IMPRESSION
89
→ utilized to retract or expose margins → for placement of the impression material
COPPER BRAND IMPRESSION
90
Advantages → good method to confirm gingival margins (ex.: in multiple abutments) → easy to cut and manipulate → easy to bend
COPPER BRAND IMPRESSION
91
Disadvantages → incisional injuries to the gingival tissues → excess pressure tends to stipple the tissues from the tooth
COPPER BRAND IMPRESSION
92
In SINGLE CORD TECHNIQUE Placement of the cord begins by pushing it in the sulcus on the _____ surface of the tooth
mesial
93
In SINGLE CORD TECHNIQUE It should be tucked into the ______ to hold the cord in place. Be sure to surround the specific tooth without contamination of saliva
distal crevice
94
In DOUBLE CORD TECHNIQUE An initial (____) cord is trimmed and placed so that it’s ends do not overlap.
thin
95
In DOUBLE CORD TECHNIQUE A second (___) cord is then saturated with astringent, placed in the normal manner, and removed after several minutes.
thicker

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