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Current complications and issues of implant superstructure
Hidemichi Kihara1, Wataru Hatakeyama1, Hisatomo Kondo1
1Department of Prosthodontics and Oral Implantology, Iwate Medical University School of Dentistry.
Journal of Oral Science
|August 21, 2022
Summary
Dental implant superstructure complications like screw loosening and abutment fracture are common. Further research is needed to understand causes and improve long-term implant prognosis.
Area of Science:
- Dental Implantology
- Prosthodontics
- Biomaterials
Background:
- Dental implant superstructures are crucial for function and aesthetics.
- Complications can arise from superstructure misfit, affecting implant stability and longevity.
Purpose of the Study:
- To review and identify complications associated with dental implant superstructures.
- To analyze the factors contributing to these complications and their clinical implications.
Main Methods:
- A narrative review of literature was conducted.
- Searches were performed on PubMed and review articles published after 1990.
Main Results:
- Superstructure misfit can lead to screw loosening, reduced preload, and stress around the implant.
- External connections and single implant prostheses show higher rates of abutment screw complications.
- Zirconia abutments with platform shifting present a high risk of fracture, particularly in male patients.
- Stud attachments (Locator type) require attention for wear and damage in implant overdentures.
Conclusions:
- The causes of some implant superstructure complications remain unclear, necessitating further investigation.
- Understanding and verifying these complications are vital for ensuring a favorable long-term prognosis of dental implants.
- Continued research into implant complications is essential for advancing dental implantology.
