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Implant > Implant Impression Techniques > Flashcards

Implant Impression Techniques Flashcards

1
Q

What are implant impressions accurate recordings of?

A

Spatial implant position.
It is required to obtain a proper support to definitive restoration with passive fitting

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2
Q

Implants are _____ and implant ______
It is important to use the correct parts and tools specific to the implant brand

A

Brand
Specific

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3
Q

Components of implant impressions

A

Stock
Custom
Proprietary
Non-proprietary

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4
Q

What do accurate implant impressions record?

A

3D position of implant in oral cavity

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5
Q

What are the benefits of impression in implant dentistry ?

A

Record position, depth, angulation, soft tissue contour (emergency profile)

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6
Q

Analog impression coping long vs short

A

Long (anterior)
Short (posterior)

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7
Q

Digital

A

Scan bodies

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8
Q

Before impressions

A

Provisionals = smooth

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9
Q

at time of impressions

A

Work fast and accurate
Control heme

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10
Q

What protocol is prior to impressions

A

Chlorohexidine

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11
Q

T/F: you need an accurate CR record and manage soft tissue during impressions

A

True

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12
Q

Implant level impression technique

A

Open tray vs closed tray
Impression of the implant platform using an implant impression coping

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13
Q

Abutment level impression technique

A

Impression of an abutment either directly using conventional techniques, or indirectly using an abutment impression coping

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14
Q

Open tray impression

A

Direct

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15
Q

Impression technique that uses an impression coping with retentive features around which a rigid elastic impression material injected. To remove the impression coping first unthread through opening on the occlusal surface of the tray

A

Open tray

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16
Q

Closed tray impression technique

A

Indirect impression

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17
Q

Impression technique that uses an impression coping with positioning features, around which a rigid elastic impression material is injected. After removal of the impression coping is unthreaded from the mouth, connect a laboratory analog and reposition into the impression prior to pouring

A

Closed tray

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18
Q

Open tray indications

A

Single units
Multiple units that need to be splinted
Implants with no sufficient parallel to allow impression to be withdrawn

19
Q

Open tray complications

A

Difficulty when position the tray
Locked in if you do not expose the impression coping

20
Q

closed tray indications

A

Single unites
Limited interarch distance
Implants that are sufficiently parallel

21
Q

Closed tray complications

A

Inaccuracy when reposting copings

22
Q

A device that registers the position of a dental implant abutment in an impression. It may be retained in the impression (direct) or may require a transfer from intraoral usage to the impression after the attachment of the corresponding analog (indirect)

A

Impression coping

23
Q

replica of an implant, abutment or attachment mechanism, usually incorporated within a cast for a prosthetic reconstruction

A

Analog

24
Q

Step 1

A

Wait 2 weeks (soft tissue healing) after surgeon gives approval from implant uncovers

25
Q

Step 2

A

Identify implant, company, type, platform diameter in pt chart of PA radiograph. Get approval from faculty

26
Q

Step 3

A

Select open tray vs closed tray

27
Q

Step 4

A

Select 1coping according to technique

28
Q

Step 5

A

Select 1 analog

29
Q

Step 6

A

If provisional (recommended for anterior teeth)

30
Q

Soft tissue contour- anterior implant restorations

A

Get provisionals in order to contour the tissue
Additional charge for pt

31
Q

Soft tissue contour timeline

A

Depends
2 weeks -2 months
Smooth temps

32
Q

Capturing the final matured soft tissue

A

Customized impression coping
Digital capture

33
Q

How long to wait before making the final impression?

A

Facial GM stabilized 3 months after abutment connection
4 months

34
Q

the area of the implant abutment and crown located immediately apical to the gingival margin; 1 mm range apicocoronally

A

Critical

35
Q

Determining the zenith and labial gingival margin

A

Facial (critical)

36
Q

Whether crown has a triangular or square shape

A

interproximal (critical)

37
Q

Located apical to the critical contour provided that sufficient running room is present. Should not affect GM or shape of crow. Flat, convex, concave

A

Subcritical

38
Q

T/F: alteration of both critical and subcritical contour can be used to enhance peri implant soft tissue esthetic

A

True

39
Q

Certain situations where changing the shape of the implant crown - non desirable

A

Critical contours should not be altered

40
Q

Only modification for a more favorable esthetic outcome through enhancement of the soft tissue profile without altering the shape of the implant crown

A

Subcritical contour

41
Q

Over contoured surface will push tissue ________
Under contoured surface will allow tissue to move ________

A

Apically
Coronally

42
Q

Bite registration aids

A

Specific to implant size and platform
Specific to implant company
Tall and short lengths - check bite
Engage impression material
Snap into implant

43
Q

Soft tissue models

A

Soft tissue contours are critical to fabrication of fixed and removable implant esthetic
Ensures emergence profile of fixed abutments replicated natural tooth esthetics
Allows lab to see the GM and know the thickness of the soft tissue in order to fabricate the crown

Implant (10 decks)

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