Dental Implants Patient Assessment & Treatment Planning 2 — Questions and Answers
Question 1: A patient's keratinized tissue width around an implant site should ideally be at least:
- 0.5 mm
- 2 mm (Correct answer)
- 6 mm
- 10 mm
Correct answer: 2 mm
At least 2 mm of keratinized tissue around implants helps resist recession, facilitates hygiene, and improves long-term peri-implant health.
Question 2: The diagnostic wax-up or digital smile design in implant planning primarily helps to:
- Determine bone density
- Visualize the final esthetic outcome and guide surgical stent fabrication (Correct answer)
- Measure osseointegration progress
- Calculate implant diameter
Correct answer: Visualize the final esthetic outcome and guide surgical stent fabrication
A diagnostic wax-up simulates the final restoration to communicate esthetics with the patient and create a surgical guide.
Question 3: Occlusal overload in implant-supported restorations can lead to:
- Faster osseointegration
- Crestal bone loss and implant failure (Correct answer)
- Improved implant stability
- Reduced infection risk
Correct answer: Crestal bone loss and implant failure
Excessive occlusal forces exceed the bone-implant interface's tolerance, causing microfractures, bone resorption, and ultimately implant failure.
Question 4: Which measurement is most important when assessing the mesiodistal space for a single tooth implant?
- Root length of adjacent teeth
- Distance between the CEJs of adjacent teeth
- Width of the edentulous space (Correct answer)
- Height of the alveolar ridge
Correct answer: Width of the edentulous space
Adequate mesiodistal width (typically ≥7 mm for a standard implant) ensures proper implant placement without encroaching on adjacent tooth roots.
Question 5: Inter-arch space (restorative space) of at least how much is typically required for an implant-supported crown?
- 2–3 mm
- 5–7 mm (Correct answer)
- 8–12 mm
- 15 mm
Correct answer: 5–7 mm
A minimum of 5–7 mm of vertical restorative space is needed to accommodate the abutment height plus the crown material.
Question 6: The 'A-line' concept in full-arch implant planning refers to:
- The alveolar nerve path
- The anticipated position of the restoration to guide implant angulation (Correct answer)
- An antibiotic protocol line
- The attachment level of gingival tissue
Correct answer: The anticipated position of the restoration to guide implant angulation
Prosthetically driven planning uses the desired tooth position (A-line) to determine ideal implant angulation and placement, ensuring the restoration dictates surgery.
Dental Implants Patient Assessment & Treatment Planning 2
A patient's keratinized tissue width around an implant site should ideally be at least: