CIT Patient Assessment & Clinical Evaluation 3 — Questions and Answers
Question 1: Which Misch bone density classification describes dense cortical bone with little medullary bone, typically found in the anterior mandible?
- D2
- D3
- D1 (Correct answer)
- D4
Correct answer: D1
D1 bone is the densest classification, consisting primarily of cortical bone and most commonly found in the anterior mandible.
Question 2: A patient has a history of head and neck radiation therapy. Which specific concern must be evaluated before implant placement?
- Increased salivary flow
- Osteoradionecrosis risk due to hypovascular, hypoxic bone (Correct answer)
- Decreased caries risk
- Enhanced osseointegration potential
Correct answer: Osteoradionecrosis risk due to hypovascular, hypoxic bone
Radiation damages blood vessels and reduces bone's healing capacity, making osteoradionecrosis a primary risk in irradiated jaw bones.
Question 3: What does the Eichner Index classify in the context of pre-implant patient assessment?
- Bone density at the implant site
- The degree of occlusal support based on remaining tooth contacts (Correct answer)
- Periodontal attachment levels
- Gingival biotype thickness
Correct answer: The degree of occlusal support based on remaining tooth contacts
The Eichner Index categorizes patients by the number of opposing occlusal contacts, informing the extent of prosthetic support needed.
Question 4: When evaluating interarch space for an implant-supported crown, what is the generally accepted minimum vertical restorative space required?
- 3–4 mm
- 7–8 mm (Correct answer)
- 1–2 mm
- 15 mm
Correct answer: 7–8 mm
A minimum of 7–8 mm of vertical restorative space is typically required to accommodate an implant abutment and crown.
Question 5: A patient with bruxism is being evaluated for implants. Which assessment finding would most directly influence treatment planning to mitigate implant overload?
- Presence of tori mandibularis
- Wear facets on opposing teeth indicating parafunctional forces (Correct answer)
- Shallow overbite
- Presence of a diastema
Correct answer: Wear facets on opposing teeth indicating parafunctional forces
Wear facets confirm parafunctional activity, indicating the need for an occlusal guard and modified prosthetic design to protect implants from overload.
Question 6: Which anatomical structure in the mandible must be precisely located via imaging before posterior implant placement to avoid neurovascular injury?
- Mental foramen and inferior alveolar canal (Correct answer)
- Lingual frenum
- Coronoid process
- Masseter muscle attachment
Correct answer: Mental foramen and inferior alveolar canal
Damage to the inferior alveolar nerve or vessels in the mandibular canal causes paresthesia or hemorrhage, making their precise location critical.
Question 7: In a patient with a thin gingival biotype, what is the most likely aesthetic risk associated with implant placement in the anterior maxilla?
- Excess bone gain
- Metallic show-through or grayish discoloration at the gingival margin (Correct answer)
- Improved papilla formation
- Reduced risk of recession
Correct answer: Metallic show-through or grayish discoloration at the gingival margin
A thin biotype provides minimal tissue volume, making the underlying implant or abutment metal visible through the translucent gingiva.
CIT Patient Assessment & Clinical Evaluation 3
Which Misch bone density classification describes dense cortical bone with little medullary bone, typically found in the anterior mandible?