Accuracy Comparison of Implant Impression Techniques: A Systematic Review

Area of Science:

• Dental Implantology
• Prosthodontics
• Materials Science

Background:

• Seamless fit of implant-supported prostheses is linked to dental impression accuracy.
• Implant angulation and coping shape are factors influencing implant misfit.

Purpose of the Study:

• To identify the most accurate dental impression technique for implant-supported prostheses.
• To determine factors affecting impression accuracy in implant dentistry.

Main Methods:

• Systematic review of peer-reviewed literature from 2009-2013.
• Analysis of 417 identified articles, with 32 selected for detailed review.
• Keywords: implant impression, impression accuracy, implant misfit.

Main Results:

• All reviewed studies were in vitro.
• Open impression technique favored over closed technique (8 vs. 6 studies).
• Splinted impression techniques were universally advocated.
• Polyether and vinyl polysiloxane were commonly tested impression materials.

Conclusions:

• Optimal accuracy achieved with optical intraoral systems (with powder).
• High accuracy also noted with the open technique, splinted squared transfer copings, and polyether material.
• These configurations contribute to reduced implant misfit and improved prosthesis fit.