Implant Impression Techniques

Question 1

What are implant impressions accurate recordings of?

Answer 1

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

Question 2

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

Answer 2

Brand
Specific

Question 3

Components of implant impressions

Answer 3

Stock
Custom
Proprietary
Non-proprietary

Question 4

What do accurate implant impressions record?

Answer 4

3D position of implant in oral cavity

Question 5

What are the benefits of impression in implant dentistry ?

Answer 5

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

Question 6

Analog impression coping long vs short

Answer 6

Long (anterior)
Short (posterior)

Question 7

Digital

Answer 7

Scan bodies

Question 8

Before impressions

Answer 8

Provisionals = smooth

Question 9

at time of impressions

Answer 9

Work fast and accurate
Control heme

Question 10

What protocol is prior to impressions

Answer 10

Chlorohexidine

Question 11

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

Answer 11

True

Question 12

Implant level impression technique

Answer 12

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

Question 13

Abutment level impression technique

Answer 13

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

Question 14

Open tray impression

Answer 14

Direct

Question 15

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

Answer 15

Open tray

Question 16

Closed tray impression technique

Answer 16

Indirect impression

Question 17

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

Answer 17

Closed tray

Question 18

Open tray indications

Answer 18

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Implants with no sufficient parallel to allow impression to be withdrawn

Question 19

Open tray complications

Answer 19

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

Question 20

closed tray indications

Answer 20

Single unites
Limited interarch distance
Implants that are sufficiently parallel

Question 21

Closed tray complications

Answer 21

Inaccuracy when reposting copings

Question 22

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)

Answer 22

Impression coping

Question 23

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

Answer 23

Analog

Question 24

Step 1

Answer 24

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

Question 25

Step 2

Answer 25

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

Question 26

Step 3

Answer 26

Select open tray vs closed tray

Question 27

Step 4

Answer 27

Select 1coping according to technique

Question 28

Step 5

Answer 28

Select 1 analog

Question 29

Step 6

Answer 29

If provisional (recommended for anterior teeth)

Question 30

Soft tissue contour- anterior implant restorations

Answer 30

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

Question 31

Soft tissue contour timeline

Answer 31

Depends 2 weeks -2 months Smooth temps

Question 32

Capturing the final matured soft tissue

Answer 32

Customized impression coping Digital capture

Question 33

How long to wait before making the final impression?

Answer 33

Facial GM stabilized 3 months after abutment connection 4 months

Question 34

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

Answer 34

Critical

Question 35

Determining the zenith and labial gingival margin

Answer 35

Facial (critical)

Question 36

Whether crown has a triangular or square shape

Answer 36

interproximal (critical)

Question 37

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

Answer 37

Subcritical

Question 38

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

Answer 38

True

Question 39

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

Answer 39

Critical contours should not be altered

Question 40

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

Answer 40

Subcritical contour

Question 41

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

Answer 41

Apically Coronally

Question 42

Bite registration aids

Answer 42

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

Question 43

Soft tissue models

Answer 43

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