Dental Implants Cheat Sheet 2026

The 30 highest-yield Dental Implants facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Bone temperature should not exceed which threshold during implant drilling to prevent thermal osteonecrosis? → 47°C
2. The peri-implant blood clot formed immediately after implant placement serves as: → A scaffold for cellular migration and initiating the healing cascade
3. A healing abutment (healing cap) is used primarily to: → Shape the peri-implant soft tissue during healing
4. The ideal implant crown to implant ratio (crown height to implant length) should ideally be: → 1:1 or less for optimal force distribution
5. Which implant diameter is typically classified as a 'narrow diameter implant' (NDI)? → Less than 3.5 mm
6. What is the purpose of micro-threads in the coronal portion of some implant designs? → Preserve crestal bone by transferring functional stress
7. The 'A-line' concept in full-arch implant planning refers to: → The anticipated position of the restoration to guide implant angulation
8. The 'stability dip' phenomenon during implant healing occurs because: → Primary stability decreases before secondary stability fully develops during remodeling
9. Which bone graft classification describes material derived from bovine or porcine bone that has been processed to remove organic components? → Xenograft
10. What is the primary indication for the ridge splitting (ridge expansion) technique in implant dentistry? → Widening a narrow but adequately tall alveolar ridge to accommodate an implant
11. Hyperbaric oxygen (HBO) therapy in implant dentistry may be used to: → Enhance healing in previously irradiated bone or compromised healing sites
12. Which intraoral donor site is most commonly used to harvest cortical block bone grafts for ridge augmentation? → Mandibular symphysis or ramus
13. Flapless implant surgery (keyhole surgery) requires which prerequisite? → Adequate bone volume confirmed by CBCT and use of a surgical guide
14. The 'tent pole' technique using implants or titanium mesh in ridge augmentation is designed to: → Create and maintain a protected space for bone regeneration
15. The screw access channel in a screw-retained implant crown is typically sealed with: → Polytetrafluoroethylene (PTFE) tape and composite
16. Stress shielding around dental implants refers to: → Reduced bone stimulation in areas shielded from occlusal load, leading to bone resorption
17. A patient with bruxism seeking dental implants should be informed that: → A night guard is recommended to protect implants from parafunctional forces
18. Which process best describes osteoinduction in bone grafting? → Stimulation of undifferentiated mesenchymal cells to become bone-forming cells
19. What is the implant-abutment connection zone called where the two components meet? → Micro-gap
20. Inter-arch space (restorative space) of at least how much is typically required for an implant-supported crown? → 5–7 mm
21. Which type of GBR membrane requires a planned second surgical procedure for removal? → Expanded polytetrafluoroethylene (e-PTFE) membrane
22. What is the primary purpose of sequential drilling (drill protocol) during implant osteotomy preparation? → To incrementally enlarge the osteotomy while minimizing heat generation
23. Which impression technique captures the three-dimensional position of implants in the mouth using a tray that remains in the mouth during cast separation? → Open-tray (pick-up) impression
24. Implant survival rate at 10 years in healthy patients with proper maintenance is approximately: → 90–95%
25. Immediate loading of a dental implant requires a minimum insertion torque of at least: → 35 Ncm
26. Which radiographic finding specifically indicates active peri-implantitis progression rather than stable remodeling? → Serial radiographic comparison showing progressive crestal bone loss over time
27. Which term describes the property of a graft material that provides a scaffold along which host bone cells can migrate and form new bone? → Osteoconduction
28. What is the primary mechanism by which Guided Bone Regeneration (GBR) achieves bone growth? → Using barrier membranes to exclude fast-proliferating soft tissue cells
29. Which growth factor, found in demineralized bone matrix, plays the most critical role in bone regeneration by stimulating osteoblast differentiation? → Bone morphogenetic protein (BMP)
30. The healing time for osseointegration in dense cortical bone (Type I) compared to softer bone (Type IV) is typically: → Longer in Type I due to reduced vascularity