Dental Implants Surgical Procedures & Techniques 2 — Questions and Answers
Question 1: The osteotome technique for sinus floor elevation (crestal approach/Summers technique) is best indicated when:
- Sinus needs more than 10 mm of elevation
- Residual bone height is 6–8 mm, requiring 2–4 mm of lift (Correct answer)
- There is acute sinusitis
- The patient has allergic rhinitis
Correct answer: Residual bone height is 6–8 mm, requiring 2–4 mm of lift
The crestal sinus lift is most predictable when 6–8 mm of residual bone remains and only a modest elevation (2–4 mm) is needed simultaneously with implant placement.
Question 2: Immediate implant placement (Type 1) means the implant is placed:
- 8 weeks after extraction
- Immediately at time of tooth extraction (Correct answer)
- After full soft tissue healing
- After complete bone fill of the socket
Correct answer: Immediately at time of tooth extraction
Type 1 (immediate) placement occurs on the same day as extraction into the fresh socket, reducing total treatment time.
Question 3: The 'jumping distance' in immediate implant placement refers to:
- The depth the implant extends beyond the socket apex
- The gap between the implant surface and the socket wall (Correct answer)
- The distance between adjacent implants
- The bone height gained from grafting
Correct answer: The gap between the implant surface and the socket wall
The jumping distance is the horizontal gap between the implant body and the buccal/lingual socket walls, which must be filled with graft material.
Question 4: Resonance frequency analysis (RFA) measures implant stability using the unit:
- Newton centimeters (Ncm)
- Implant stability quotient (ISQ) (Correct answer)
- Hounsfield units (HU)
- Millimeters (mm)
Correct answer: Implant stability quotient (ISQ)
RFA measures implant stability on an ISQ scale from 1–100; higher values indicate greater stiffness and primary stability.
Question 5: Which post-operative instruction is most critical after implant surgery to prevent infection?
- Avoiding all oral hygiene for 2 weeks
- Chlorhexidine rinse and prescribed antibiotics as directed (Correct answer)
- Eating only on the surgical side to maintain blood supply
- Applying heat packs immediately after surgery
Correct answer: Chlorhexidine rinse and prescribed antibiotics as directed
Chlorhexidine rinse reduces bacterial load at the surgical site while antibiotics prevent post-operative infection during the critical early healing phase.
Question 6: Guided bone regeneration (GBR) uses a membrane primarily to:
- Stabilize the implant position
- Exclude epithelial and connective tissue cells while allowing bone progenitor cells to repopulate the defect (Correct answer)
- Provide structural bone volume
- Deliver growth factors to the site
Correct answer: Exclude epithelial and connective tissue cells while allowing bone progenitor cells to repopulate the defect
GBR membranes act as a physical barrier, preventing fast-growing soft tissue from occupying the defect space and allowing slower-growing osteogenic cells to fill it.
Dental Implants Surgical Procedures & Techniques 2
The osteotome technique for sinus floor elevation (crestal approach/Summers technique) is best indicated when: