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Does the implant-abutment interface interfere on marginal bone loss? A systematic review and meta-analysis
Enéias Carpejani Rosa1, Tatiana Miranda Deliberador1, Tuanny Carvalho de Lima do Nascimento1
1Universidade Positivo, School of Health Sciences, Graduate Program in Dentistry, Curitiba, PR, Brazil.
Brazilian Oral Research
|October 3, 2019
Summary
This systematic review found no significant differences in marginal bone loss (ΔMBL) or survival rates between internal connection (IC) and external hexagonal (EH) dental implants at 1, 3, and 5 years. However, probing depth (PD) was better with IC implants.
Area of Science:
- Dental Implantology
- Biomaterials Science
- Prosthodontics
Background:
- Dental implant connections are crucial for biomechanical stability and long-term success.
- Internal connection (IC) and external hexagonal (EH) designs are common, each with potential advantages and disadvantages.
- Understanding their impact on marginal bone loss (ΔMBL) and peri-implant health is essential for clinical decision-making.
Purpose of the Study:
- To systematically compare the incidence of marginal bone loss (ΔMBL) between conical internal connection (IC) and external hexagonal (EH) dental implants.
- To evaluate survival rates (SR) and probing depths (PD) as secondary outcomes.
- To synthesize current evidence regarding the clinical performance of different implant connection types.
Main Methods:
- Systematic literature search across multiple databases.
- Inclusion of studies reporting ΔMBL, SR, and PD data.
- Risk of bias assessment for included studies.
- Meta-analysis of extracted data for ΔMBL, SR, and PD.
Main Results:
- No statistically significant differences in ΔMBL were observed between IC and EH implants at 1, 3, and 5-year follow-ups.
- Survival rates (SR) showed no significant differences between the two connection types.
- Statistically significant lower probing depths (PD) were found for IC implants compared to EH implants at the 1-year follow-up (p = 0.0004).
Conclusions:
- Both IC and EH implant connections demonstrate comparable outcomes regarding marginal bone loss (ΔMBL) and survival rates (SR) up to 5 years.
- Implants with IC connections may offer an advantage in terms of reduced probing depths (PD).
- High heterogeneity necessitates further well-designed randomized clinical trials to confirm these findings.
