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Table 3 Evaluation of the impact of variables on microleakage incidence using meta-regression analysis

From: Microleakage along the implant–abutment interface: a systematic review and meta-analysis of in vitro studies

Independent variables

Coefficient**

95% CI*

P-value

Load

0.315

[0.06; 0.57]

0.016

Approach

− 0.106

[− 0.38; 0.17]

0.436

Connection

0.302

[− 0.05; 0.65]

0.091

Sealing material

− 0.200

[− 0.69; 0.29]

0.415

Abutment material

− 0.112

[− 0.37; 0.60]

0.642

  1. Lines with bold text signify indipendent variables with significant correlation with IME
  2. *95% CI: 95% confidence interval of the coefficient
  3. **Coefficient: a positive value represents a higher incidence of microleakage at the implant–abutment interface in dynamic loading conditions, and vice versa. All factors are binary variables in the analysis. The results mean the loading group had a 31.5% higher incidence than the unloaded group
  4. Approach: inward method versus outward method
  5. Connection: internal connection versus external connection
  6. Sealing material: using sealing material or not
  7. Abutment material: titanium abutments versus PEEK abutments