Complications in Dental Implantology

1. Which of the following is the most common cause of early implant failure?
   1. Peri-implantitis
   2. Poor oral hygiene
   3. Overheating of bone during osteotomy
   4. Implant fracture
   
   
   
2. Which of the following is a hallmark sign of peri implantitis?
   1. Gingival redness only
   2. Pocket formation without bone loss
   3. Bleeding on probing and radiographic bone loss
   4. Absence of keratinized tissue
   
   
   
3. Which of the following factors contributes most significantly to late implant failure?
   1. Smoking
   2. Incorrect implant diameter
   3. Poor bone density
   4. Micromovement during placement
   
   
   
4. An advantage of platform switching is:
   1. Reduced cost
   2. Improved esthetics only
   3. Reduction in crestal bone loss
   4. Easier prosthetic handling
   
   
   
5. In the management of peri-implantitis, the most effective decontamination method for implant surfaces is currently considered to be:
   1. Manual scaling with stainless steel curettes
   2. Air abrasion with glycine powder
   3. Systemic antibiotics alone
   4. Use of hydrogen peroxide
   
   
   
6. A patient presents with progressive bone loss around multiple implants and no signs of infection. What is the most probable cause?
   1. Biologic width violation
   2. Excessive occlusal loading
   3. Improper hygiene
   4. Residual cement
   
   
   
7. According to the literature, what is the minimum amount of keratinized mucosa required around an implant to reduce the risk of peri-implant mucositis?
   1. 1 mm
   2. 2 mm
   3. 3 mm
   4. Not essential
   
   
   
8. A sinus floor elevation procedure is contraindicated when the residual bone height is:
   1. >5 mm
   2. <5 mm
   3. <2 mm
   4. <1 mm
   
   
   
9. Which cytokine is most commonly associated with bone resorption in peri-implantitis?
   1. IL-4
   2. IL-6
   3. IL-10
   4. TNF-a
   
   
   
10. What is the recommended action if an implant exhibits mobility after the healing phase, but before loading?
    1. Wait 6 more weeks
    2. Apply light occlusal forces
    3. Remove the implant
    4. Connect to adjacent teeth for splinting
    
    
    

ANSWERS