Implant Components & Impression Techniques in Implant Dentistry

Question 1

Implant Restorative Kit

Answer 1

• Each implant system has its own.

Question 2

Impression Coping* Open tray or closed tray.
(4)

Answer 2

• Each implant diameter has its own.
• Length of the coping is determined by the height of the adjacent
  teeth.
• Sometimes different emergence profile options.

Question 3

Implant Analog

Answer 3

• Each implant diameter has its own, length does not matter.

Question 4

Temporary Abutment
(3)

Answer 4

• Can be metal or peek/acrylic material.
• Should always be used for anterior teeth.
• When multiple posterior teeth are being restored may be used to
  reestablish posterior support and vertical dimension before
  proceeding to final restorations.

Question 5

Bite Registration Aid
(1)

Answer 5

• Needed when there aren’t enough teeth to stabilize casts during
  articulator mounting (multiple teeth missing, no posterior stops).

Question 6

Custom Castable abutment (Gold abutment, UCLA abutment)
(4)

Answer 6

• Used to fabricate screw-retained gold & PFM implant crowns or custom
  abutments for cement retained gold and PFM crowns when implant position is not
  ideal.
• Made of gold alloy.
• Expensive.
• Because it is heated many times in an oven for casting, the connection can get
  distorted and create a discrepancy.

Question 7

Prefabricated
(5)

Answer 7

• Most used option is the titanium base (Ti-base)
  which is used to fabricate screw-retained all-
  ceramic implant crowns or custom abutments
  for cement retained all-ceramic implant crowns
  (Zirconia & Lithium disilicate).
• Made of titanium.
• Cheaper.
• Many different options, which sometimes can be
  overwhelming.
• Has the advantage of never being heated in an
  oven, avoids distortions.

Question 8

Implant Final Abutment
Angled Ti-bases are available for

Answer 8

screw-retained implant prosthesis for
when the implant position is not ideal,
allowing for up to 25° implant angle
correction. If the angle correction
needed is above 25°, a custom abutment
and cement retained restoration will be
necessary.
*Specifically made drivers are necessary
for angled Ti-bases.

Question 9

Custom CAD/CAM abutment
(4)

Answer 9

• Expensive.
• Custom made by manufacturer for that specific implant.
• Never goes in the oven.
• Final restoration is either cemented or screw-retained.

Question 10

Selection of Components
Each implant company and type has its own components:

Answer 10

• Straumann Tissue Level
• Straumann Bone Level
• Nobel External Hex Connection
• Nobel Internal Conical Connection
• Nobel Internal Tri-Channel Connection
• Astra Tech Osseospeed
• Etc.

Question 11

Implant level impression
(2)

Answer 11

*Open tray (implant and teeth are notnecessarily parallel)
*Closed tray (implant and teeth areclose to parallel)

Question 12

Abutment Level Impression

Answer 12

*Impression of prepared abutment (either custom or prefabricated abutment)

Question 13

Closed Tray
(3)

Answer 13

*Available in different lengths
for different clinical situations.
*Length should be similar to
the adjacent teeth to allow for proper seating of the tray.
*Use a rigid impression tray.

Question 14

Implant Analog/Replica
(2)

Answer 14

*Precise replication of the implant’s position
and fixture within the mouth.
*Body of the analog only made for retention
within the cast’s stone material. Does not
replicate the body of the implant.

Question 15

Open Tray
(4)

Answer 15

• Available in different lengths for different clinical situations.
• Length should be greater than the height of the adjacent teeth for it to protrude from the tray perforation.
• Consider patient’s mouth opening capabilities when selecting length for posteriorly placed implants in addition to adjacent teeth height.
• Use a rigid impression tray.

Question 16

Impression Taking
steps (4)

Answer 16

Step 1: Remove the healing cap, if one is present.
Step 2: Snap the impression cap on the implant
abutment.
Step 3: Syringe light body material
around the base of the impression
cap, onto the soft tissue.
Step 4: Final impression with heavy
body.