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Mini-implant mandibular overdentures under a two-step immediate loading protocol: A 4-6-year retrospective study.
Jin-Hong Park1, Sang-Wan Shin2, Jeong-Yol Lee3
1Department of Prosthodontics, Korea University Guro Hospital, Korea University Medicine, Seoul, Republic of Korea.
Gerodontology
|April 16, 2023
Summary
Mandibular mini-implant overdentures (MIODs) show a 100% survival rate and improved patient satisfaction. Achieving high initial implant stability is crucial for successful outcomes in edentulous patients.
Area of Science:
- Dental Implantology
- Prosthodontics
Background:
- Mini-implant overdentures offer simplicity with flapless surgery and immediate loading.
- Some mini-implants may have lower initial stability, posing a challenge.
Purpose of the Study:
- To evaluate treatment outcomes of mandibular mini-implant overdentures (MIODs).
- To assess MIODs placed under a two-step immediate loading protocol.
Main Methods:
- Retrospective study of 30 participants over 4 years.
- Four one-piece mini-implants (<3mm) placed flaplessly with new RCDs.
- O-ring attachment placed ≥8 weeks post-implant placement.
Main Results:
- 100% implant survival rate over a mean 58.9-month follow-up.
- Mean marginal bone loss of -0.9mm; implant success rate 83.3%, patient success rate 66.7%.
- Improved patient satisfaction, mastication, and pain management with longer loading times.
Conclusions:
- Mandibular MIODs are a viable alternative for edentulous patients with limited bone volume.
- Two-step immediate loading protocol can yield successful outcomes.
- Maximizing implant diameter is key for initial stability and superior treatment outcomes.
