Dental Implants Surgical Procedures & Techniques 1 — Questions and Answers
Question 1: In a two-stage implant protocol, the second-stage surgery involves:
- Placing the implant fixture
- Removing the cover screw and placing a healing abutment (Correct answer)
- Cementing the final crown
- Performing the bone graft
Correct answer: Removing the cover screw and placing a healing abutment
Second-stage surgery re-exposes the buried implant, removes the cover screw, and places a healing abutment to prepare the soft tissue for restoration.
Question 2: What is the primary purpose of sequential drilling (drill protocol) during implant osteotomy preparation?
- To create a rough bone surface
- To incrementally enlarge the osteotomy while minimizing heat generation (Correct answer)
- To remove all cortical bone
- To stimulate bleeding for healing
Correct answer: To incrementally enlarge the osteotomy while minimizing heat generation
Sequential drilling gradually widens the site to the final diameter while controlling bone temperature and preventing thermal necrosis.
Question 3: Bone temperature should not exceed which threshold during implant drilling to prevent thermal osteonecrosis?
- 37°C
- 42°C
- 47°C (Correct answer)
- 55°C
Correct answer: 47°C
Sustained bone temperatures above 47°C for more than 1 minute cause osteonecrosis, which can prevent osseointegration and lead to implant failure.
Question 4: Which flap design in implant surgery minimizes damage to the blood supply and preserves interdental papillae?
- Full-thickness trapezoidal flap
- Papilla-sparing (papilla preservation) incision (Correct answer)
- Crestal split-thickness flap
- Envelope flap without vertical releasing incisions
Correct answer: Papilla-sparing (papilla preservation) incision
Papilla-sparing incision designs avoid cutting through the papillae, preserving their blood supply and reducing esthetic complications.
Question 5: Flapless implant surgery (keyhole surgery) requires which prerequisite?
- Significant bone augmentation needed
- Adequate bone volume confirmed by CBCT and use of a surgical guide (Correct answer)
- Only applicable in edentulous patients
- No local anesthesia needed
Correct answer: Adequate bone volume confirmed by CBCT and use of a surgical guide
Flapless surgery relies entirely on CBCT data and a surgical guide for accurate placement since the operator cannot visualize the bone directly.
Question 6: Primary stability (initial stability) during implant placement is primarily determined by:
- Implant surface coating
- Bone-to-implant contact achieved at time of surgery (Correct answer)
- Healing time protocol
- Abutment design
Correct answer: Bone-to-implant contact achieved at time of surgery
Primary stability refers to the mechanical engagement of the implant with bone at time of placement, measured by insertion torque and resonance frequency analysis.
Dental Implants Surgical Procedures & Techniques 1
In a two-stage implant protocol, the second-stage surgery involves: