Immediate Denture and Single-Implant Overdenture in a Patient with Uncontrolled Diabetes

Risk assessment

• HbA1c 9.4% = poorly controlled diabetes → impaired wound healing, higher risk of infection and implant failure, especially with immediate placement/loading.
• Smoking 15/day → increased risk of implant failure and peri-implantitis; smoking is a relative contraindication, especially for immediate protocols.
• Resorbed class IV maxilla + flabby tissue → poor bone volume and soft tissue quality; immediate placement/loading is even less predictable.

Conclusion

• Immediate implant placement and immediate loading are not advisable now.
• The priority is medical optimization: refer to his physician to improve glycemic control (target generally HbA1c < 7–8% before elective implant surgery) and smoking cessation counseling.
• If implants are pursued later, consider delayed placement and delayed loading after healing, with careful site assessment (CBCT) and possibly grafting.

Communication: Explain that proceeding now risks failure and that optimizing health first improves success.

Options

1. Immediate denture
   • Pros: immediate esthetics/function after extractions.
   • Cons: more resorption, reline needed, higher maintenance; not ideal as a definitive solution.
2. Conventional complete denture
   • Pros: lower cost, simpler; good if borders and occlusion are optimized.
   • Cons: retention may remain poor with a class IV ridge; flabby tissue complicates impressions.
3. Single-implant overdenture (e.g., midline implant)
   • Pros: improves retention with modest cost; simpler than multiple implants.
   • Cons: requires adequate bone and controlled diabetes/smoking; single implant may be overloaded; needs maintenance.

Recommended staged plan

1. Medical optimization (glycemic control, smoking cessation).
2. New conventional denture with proper border molding and a functional impression (manage flabby tissue with a relieved custom tray or window technique).
3. Reassess retention; if inadequate and the patient is medically optimized, consider a single midline implant for overdenture retention (delayed loading).
4. If a fixed solution is desired later, reassess bone volume and finances.

Bottom line: Start with a well-made conventional denture; consider an implant overdenture only after medical optimization.

Flabby anterior tissue

• Use a custom tray with a window over the flabby area or a relieved tray so the tissue is not compressed during the final impression.
• Take a mucostatic/functional impression to record the tissue at rest, avoiding displacement that would create a denture that rocks or ulcerates.
• Alternatively, use a two-stage impression: record the flabby area with light-body material after the rest of the denture is border-molded.

Prominent incisive papilla

• Relieve the denture base over the incisive papilla to avoid pressure and nerve compression.
• Ensure the labial flange is properly extended but not overextended into the frenum.

Border seal

• Perform border molding with modeling compound to establish a peripheral seal, especially in the postdam and buccal vestibule.
• Check for postdam adequacy to prevent dislodgement.

Occlusion

• Balanced occlusion; avoid anterior interference.
• Consider a metal-reinforced or high-impact acrylic base to reduce fracture risk (history of midline fracture).

Follow-up: Instruct on denture hygiene and schedule adjustments; warn about sore spots from the flabby ridge.