Free DHA Implantology mock test

Implantology sample questions with answers

4 more original exam-style Implantology questions, worked in full. They are not real or recalled exam questions, and none of them is in the diagnostic above, so sit that first if you have not.

1. Question 1 · Bone Augmentation and Sinus Surgery

   A clinician uses deproteinised bovine bone mineral to graft a sinus floor. Which property does this material mainly provide?

   1. AOsteogenesis from living cells
   2. BOsteoinduction from bone proteins
   3. COsteoconduction with slow resorption
   4. DRapid resorption within 4 weeks
   Show answer and explanation

   Correct answer: C. Osteoconduction with slow resorption

   Deproteinised bovine bone mineral is a xenograft that acts as an osteoconductive scaffold and resorbs very slowly, helping to maintain volume. It contains no living cells or active proteins, so it is neither osteogenic nor osteoinductive. Its slow resorption is useful for contour maintenance.

   Reference: Misch, Contemporary Implant Dentistry, 4th ed.

2. Question 2 · Complications and Peri-implant Disease

   The day after placement of an implant in the lower first molar site, a patient reports numbness and burning of the lower lip. CBCT shows the implant tip entering the inferior alveolar canal. What is the most appropriate action?

   1. AReassure and review in 3 months
   2. BLoad the implant early to speed healing
   3. CPrescribe oral antibiotics for 1 week
   4. DRemove or withdraw the implant without delay
   Show answer and explanation

   Correct answer: D. Remove or withdraw the implant without delay

   When an implant impinges on the canal, prompt removal or withdrawal, ideally within about 36 hours, gives the best chance of nerve recovery. Waiting allows ongoing compression and a higher risk of permanent neuropathic pain. Antibiotics and early loading do not address the cause.

   Reference: Renton and Yilmaz, Managing iatrogenic trigeminal nerve injury, Int J Oral Maxillofac Surg 2012

3. Question 3 · Diagnosis, Treatment Planning and Imaging

   Two adjacent 4.0 mm implants are planned to replace a lower first and second premolar between a canine and a first molar. Using 1.5 mm from each tooth and 3 mm between implants, what is the minimum space needed at bone level?

   1. A11 mm
   2. B14 mm
   3. C12.5 mm
   4. D16 mm
   Show answer and explanation

   Correct answer: B. 14 mm

   The total is 1.5 + 4.0 + 3.0 + 4.0 + 1.5 = 14 mm. An inter-implant distance under 3 mm is associated with more crestal bone loss between the implants, which also reduces papilla height. If less space is available, narrower implants or a cantilevered pontic may be used.

   Reference: Tarnow, Cho and Wallace, The effect of inter-implant distance on the height of inter-implant bone crest, J Periodontol 2000

4. Question 4 · Diagnosis, Treatment Planning and Imaging

   A 4.0 mm diameter implant is planned between two natural teeth. Keeping the commonly recommended minimum distance between the implant and each adjacent root, what is the minimum mesiodistal space needed at bone level?

   1. A5 mm
   2. B6 mm
   3. C8 mm
   4. D7 mm
   Show answer and explanation

   Correct answer: D. 7 mm

   A distance of at least 1.5 mm between implant and adjacent tooth is recommended to protect the interproximal bone and papilla. For a 4.0 mm implant, 1.5 + 4.0 + 1.5 = 7 mm. Less space risks bone loss on the adjacent root and loss of the papilla.

   Reference: Misch, Contemporary Implant Dentistry, 4th ed.