Accuracy of Different Dental Impression Techniques for Implant-Supported Dental Prostheses

Consensus Statement 1: Accuracy of digital impressions is comparable to conventional implant impressions under laboratory conditions

The accuracy of digital impressions with intraoral scanners of single or adjacent implants in partially dentate jaws and multiple implants in edentulous jaws is comparable to the accuracy of conventional implant impressions under laboratory conditions. Consensus statement 1 is based on six bench studies.

Consensus Statement 2: Accuracy of digital impressions is negatively influenced with increase in the inter-implant distance

The accuracy of digital impressions is negatively influenced with an increase in the interimplant span between multiple implants in partially dentate and edentulous situations. Consensus statement 2 is based on three bench studies.

Consensus Statement 3: Scanning protocol influences the digital implant impression accuracy

The scan protocol using intraoral scanners has a significant influence on digital implant impression accuracy in the edentulous jaw. Consensus statement 3 is based on four bench studies using the same control.

Consensus Statement 4: Accuracy of digital implant impressions of edentulous jaws varies with different intraoral scanners

The accuracy of digital implant impressions of edentulous jaws varies when using different intraoral scanners. Consensus statement 4 is based on four bench studies.

1) Digital impressions for single implant restorations is recommended

The use of digital impressions for single implant restorations can be recommended

2) Device-specific intraoral scanning protocols must be followed

To optimize digital implant impressions for each clinical situation, device-specific intraoral scanning protocols must be followed.

3) Digital impressions of large inter-implant spans are not recommended

Digital impressions of large inter-implant spans are not yet recommended for routine clinical use.

4) Intraoral digital implant impressions of edentulous jaws is not recommended

For routine clinical use, intraoral digital implant impressions of edentulous jaws cannot yet be recommended.