ABP Implant Dentistry 4

Question 1

Which pharmacologic agent has the strongest evidence for negatively affecting osseointegration when taken long-term prior to implant placement?

Accepted Answer

Bisphosphonates

Answer

Bisphosphonates inhibit osteoclast activity and bone remodeling, significantly increasing the risk of osseointegration failure and medication-related osteonecrosis of the jaw.

Question 2

The Albrektsson criteria for implant success include all of the following EXCEPT:

Accepted Answer

Implant mobility of less than 1 mm in any direction

Answer

The Albrektsson criteria require complete immobility; any detectable implant mobility (even <1 mm) indicates failure of osseointegration.

Question 3

In a patient with uncontrolled type 2 diabetes (HbA1c > 10%), the primary concern regarding implant therapy is:

Accepted Answer

Impaired neutrophil function and wound healing reducing osseointegration rates

Answer

Poor glycemic control impairs neutrophil chemotaxis, phagocytosis, and collagen synthesis, compromising wound healing and osseointegration success.

Question 4

The all-on-4 concept places two posterior implants at a specific angulation to avoid anatomical structures. That angulation is approximately:

Accepted Answer

45°

Answer

In the All-on-4 protocol, the two distal implants are tilted approximately 45° to increase implant length and avoid the maxillary sinuses or mental foramina.

Question 5

Crestal bone loss of more than 2 mm within the first year of implant loading is classified according to Misch criteria as:

Accepted Answer

Implant failure — Category III

Answer

Misch Category III implant failure is characterized by bone loss ≥ half the implant length or mobility, requiring removal before complete bone loss occurs.

(ABP) American Board of Periodontology Practice Test

(ABP) American Board of Periodontology Practice Test

ABP Implant Dentistry 4