Dental Implants Patient Assessment & Treatment Planning 3

Question 1

Which bone classification (Lekholm & Zarb) describes dense cortical bone with little trabecular bone, typically found in the anterior mandible?

Accepted Answer

Type I

Answer

Type I bone is almost entirely dense cortical bone, providing excellent primary stability but potentially limiting blood supply to the implant surface.

Question 2

A patient with bruxism seeking dental implants should be informed that:

Accepted Answer

A night guard is recommended to protect implants from parafunctional forces

Answer

A custom occlusal night guard reduces parafunctional forces on implant restorations, decreasing fracture and bone loss risk in bruxing patients.

Question 3

When evaluating a patient for full-arch implant-supported fixed prosthesis (All-on-4), what is the minimum number of implants typically placed per arch?

Accepted Answer

4

Answer

The All-on-4 protocol places 4 implants per arch (2 axial anterior, 2 tilted posterior) to support a full-arch fixed prosthesis.

Question 4

Pre-implant orthodontic treatment may be needed to:

Accepted Answer

Create adequate mesiodistal space and align adjacent roots

Answer

Orthodontics can upright tipped adjacent teeth and open collapsed spaces to provide the necessary room and favorable root angulation for implant placement.

Question 5

The 'comfort zone' for implant placement in relation to the maxillary sinus floor is best described as:

Accepted Answer

At least 1–2 mm of bone must remain between the implant apex and the sinus floor

Answer

Maintaining 1–2 mm of bone between the implant apex and the sinus membrane prevents perforation while maximizing available bone height.

Dental Implants Practice Test

Dental Implants Practice Test

Dental Implants Patient Assessment & Treatment Planning 3