Main concern for implant placement in the area of tooth #4 (upper first premolar), EXCEPT:

Correct answer: C. Distance between the implant and the soft tissue (implant-to-tissue distance)

• A. Incorrect — nerve tissue IS a concern. The anterior superior alveolar nerve and palatine nerves are in this region.
• B. Incorrect — distance between teeth and implant IS a concern. At least 1.5–2 mm of bone should remain between the implant and adjacent roots.
• C. Correct — DISTANCE BETWEEN IMPLANT AND SOFT TISSUE is the EXCEPTION for this location. Unlike the MANDIBULAR premolar area (where proximity to the mental nerve and mental foramen is a critical distance concern), the 'distance between implant and tissue' (implant-to-soft-tissue distance) is a routine consideration for all implants, not a SPECIFIC additional concern unique to the #4 area.
• D. Incorrect — remaining bone height IS a concern. Adequate bone (height and width) is required for primary implant stability and osseointegration.