Dental Advanced Topics 5

Question 1

Which biologic agent is commonly used to promote periodontal regeneration by mimicking developmental proteins?

Accepted Answer

Enamel matrix derivative (Emdogain)

Answer

Enamel matrix derivative stimulates regeneration of periodontal tissues by mimicking tooth development.

Question 2

What does the term 'guided bone regeneration (GBR)' primarily aim to achieve?

Accepted Answer

Increase bone volume using a barrier membrane

Answer

GBR uses a barrier membrane to exclude soft tissue and allow bone to fill a defect.

Question 3

In implant prosthetics, what is a common cause of screw loosening in a screw-retained crown?

Accepted Answer

Inadequate preload or occlusal overload

Answer

Insufficient preload torque or excessive occlusal forces commonly lead to abutment screw loosening.

Question 4

Which advanced imaging finding would most strongly contraindicate immediate implant placement?

Accepted Answer

Active periapical infection at the site

Answer

Active infection at the site compromises healing and contraindicates immediate placement.

Question 5

What is the main goal of crown lengthening surgery?

Accepted Answer

Expose more tooth structure and restore biologic width

Answer

Crown lengthening removes bone and tissue to expose sound structure and re-establish biologic width.

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