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Implant Loading Protocols & Prosthetics

Oral Implantology • NEET MDS Study Guide • AI-Generated Notes

⭐ High-Yield Facts for Exam

  • Immediate loading <48 h (needs primary stability).
  • Early = 48 h-3 months.
  • Conventional = 3-6 months.
  • All-on-4 = 4 implants/arch (2 tilted posterior).
  • Screw-retained = retrievable; cement = clean-up critical.

Implant Loading Protocols & Prosthetics

Loading Timing

  • Immediate loading — restoration within ~48 hours (needs good primary stability).
  • Early loading — between ~48 hours and 3 months.
  • Conventional loading — after ~3-6 months of osseointegration.

Full-arch Concepts

All-on-4 — a full-arch prosthesis on four implants (two anterior axial + two tilted posterior) to avoid grafting and use available bone.

Retention

  • Screw-retained — retrievable, no excess cement (risk of peri-implantitis from cement).
  • Cement-retained — passive fit/esthetics but cement clean-up is critical.

Exam Tips ⭐

Immediate <48 h; conventional 3-6 months; All-on-4 = 4 implants/arch; screw-retained = retrievable.

📝 Practice MCQs — Implant Loading Protocols & Prosthetics

Q1. Conventional implant loading occurs after approximately:
A. 48 hours
B. 1 week
C. 3-6 months
D. 2 years
Show Answer
✅ Answer: C
Conventional loading allows 3-6 months for osseointegration.
Q2. The All-on-4 concept uses how many implants per arch?
A. 2
B. 4
C. 6
D. 8
Show Answer
✅ Answer: B
All-on-4 supports a full arch on four implants.
Q3. A key advantage of screw-retained prostheses is:
A. No need for accuracy
B. Retrievability
C. Cheaper
D. No screw access hole
Show Answer
✅ Answer: B
Screw-retained restorations are retrievable and avoid residual cement.
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