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Splinted and unsplinted overdenture attachment systems: A systematic review and meta-analysis
R S Leão1, S L D Moraes1, B C E Vasconcelos2
1Department of Prosthodontics, Dentistry School, University of Pernambuco (UPE), Recife, Brazil.
This systematic review found no significant difference in marginal bone loss, prosthetic complications, or implant survival rates between splinted and unsplinted overdenture attachment systems. Both systems offer comparable clinical outcomes for dental implants.
Area of Science:
- Dental Implantology
- Prosthodontics
- Biomaterials
Background:
- Overdenture attachment systems are crucial for prosthetic rehabilitation.
- Splinted and unsplinted systems present distinct clinical advantages and disadvantages.
- Understanding their comparative efficacy is vital for patient outcomes.
Purpose of the Study:
- To systematically review and compare splinted versus unsplinted overdenture attachment systems.
- To evaluate the influence of these systems on marginal bone loss, prosthetic complications, and implant survival rates.
Main Methods:
- Systematic literature search of PubMed/MEDLINE, Scopus, and Cochrane databases up to October 2017.
- Inclusion of randomized controlled trials and prospective studies with a minimum of 10 participants and 6-month follow-up.
- Meta-analysis of nine selected studies involving 984 implants in 380 patients.
Main Results:
- No statistically significant differences were found between splinted and unsplinted systems for marginal bone loss (P=.39).
- Prosthetic complication rates showed no significant difference (P=.31).
- Implant survival rates were comparable between the two attachment systems (P=.14).
Conclusions:
- Splinted and unsplinted overdenture attachment systems demonstrate similar clinical performance.
- Both systems achieve comparable results regarding marginal bone loss, prosthetic complications, and implant survival.
- Clinical decision-making can be based on factors beyond comparative efficacy for these attachment types.
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