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The One Abutment-One Time Protocol: A Systematic Review and Meta-Analysis.
Momen A Atieh1,2, Andrew Tawse-Smith1,2, Nabeel H M Alsabeeha3
1Oral Implantology Research Group, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand.
Definitive abutments (DAs) may be a viable alternative to provisional abutments (PAs) during implant placement, showing better marginal bone levels. However, clinical significance requires further investigation.
Area of Science:
- Dental Implantology
- Prosthodontics
- Systematic Review
Background:
- Definitive abutments (DAs) offer an alternative to provisional abutments (PAs) to avoid abutment dis/reconnection during implant placement.
- Limited and inconsistent literature exists on the effectiveness of DAs.
Purpose of the Study:
- To systematically review marginal bone and soft tissue changes, complications, and implant failure rates associated with DAs versus PAs.
Main Methods:
- Systematic review following PRISMA guidelines.
- Searched MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials.
- Assessed risk of bias and performed meta-analyses.
Main Results:
- Seven trials with 363 implants were included.
- Significant differences in marginal bone level changes favored DAs.
- No significant differences in soft tissue levels, complications, or failure rates were found.
Conclusions:
- DAs appear to be a viable option at implant placement.
- Favorable marginal bone level changes with DAs warrant cautious interpretation due to uncertain clinical significance.
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