17. Implant overdentures

Question 1

Define implant overdentures:

Answer 1

Prosthesis that covers and is partially supported by natural teeth/roots and/or implants

Question 2

Types of implant overdentures? (2)

Answer 2

• Implant supported-implant retained overdentures.

- Tissue supported-implant retained overdentures.

Question 3

implant overdentures: support in tissue supported -implant retained?

Answer 3

No support over the implants

Question 4

implant overdentures: what helps retention? (4)

Answer 4

• Adhesion.
• Cohesion.
• Border seal.
• Retentive devices (attachments).
- Bars.
- Balls.
- Other attachments (Locator®).

Question 5

implant overdentures: what helps stability? (3)

Answer 5

• Balanced articulation (the same as CDs).
• All the other principles for CDs.
• Increased stability because of attachments.

Question 6

Implant overdentures: indictions? (5)

Answer 6

• patients with alot of bone crest loss
• No option but to replace teeth, hard & soft tissue (ex. lack of lip support)
• patients that want to improve retention and stability of their complete denture (usually lower)
• cant beat having more implants
• $$ reasons

Question 7

Implant overdentures: contraindictions? (4)

Answer 7

• Patients very comfortable with their CDs.
• Enough bone volume and quality for a fixed rehabilitation.
• Any decease that contraindicates surgical
procedures.
• Not enough bone volume to place implants.

Question 8

Implant overdentures: treatment planning? (4)

Answer 8

Same as CD

• Assessment of lip support.
• Smile line.
• Vertical dimension.
• Intermaxillary relationship

Question 9

Implant overdentures: What do we examine intraorally? (2)

Answer 9

• Volume of alveolar ridge.

- Soft tissue pathology.

Question 10

Implant overdentures: distribution of implants? (3)

Answer 10

• Maxilla: Lateral incisor and first premolars.

- Mandible:Canines.

Question 11

Implant overdentures: retentive bars? (4)

Answer 11

• Dolder.
• Akerman.
• Hader.
• Parallel surfaces bar.

Question 12

Implant overdentures: retentive axial devices? (3)

Answer 12

• Ball attachments.
• Locator®.
• Magnets.