Dental Implants Osseointegration & Healing 2

Question 1

The 'stability dip' phenomenon during implant healing occurs because:

Accepted Answer

Primary stability decreases before secondary stability fully develops during remodeling

Answer

The implant loosens due to infection

Answer

The crown is placed too early

Answer

Bone grafts resorb before the implant integrates

Question 2

Growth factors contained in platelet-rich fibrin (PRF) that enhance implant site healing include:

Accepted Answer

PDGF, TGF-beta, and VEGF

Answer

TNF-alpha and IL-6

Answer

Cortisol and epinephrine

Answer

Histamine and bradykinin

Question 3

Fibro-osseous integration (as opposed to osseointegration) is considered a failure because:

Accepted Answer

A fibrous tissue layer at the interface lacks mechanical stability and is prone to breakdown

Answer

It is too rigid and causes bone fractures

Answer

It causes excessive bone growth around the implant

Answer

The implant fuses permanently and cannot be removed

Question 4

The peri-implant blood clot formed immediately after implant placement serves as:

Accepted Answer

A scaffold for cellular migration and initiating the healing cascade

Answer

A barrier to prevent infection only

Answer

Permanent connective tissue

Answer

A substitute for bone graft material

Question 5

Which systemic condition most severely impairs osseointegration by reducing osteoblast function?

Accepted Answer

Osteoporosis

Answer

Controlled hypertension

Answer

Well-managed hypothyroidism

Answer

Controlled asthma

Question 6

Stress shielding around dental implants refers to:

Accepted Answer

Reduced bone stimulation in areas shielded from occlusal load, leading to bone resorption

Answer

Protective effect of implants on adjacent teeth

Answer

The implant preventing occlusal forces from reaching the sinus

Answer

Cortical bone protecting the implant from micromovement