Accuracy Comparison of Implant Impression Techniques: A Systematic Review

作者：Moreira Antonio H J^*; Rodrigues Nuno F; Pinho Antonio C M; Fonseca Jaime C; Vilaca Joao L

来源：Clinical Implant Dentistry and Related Research, 2015, 17: E751-E764.

DOI：10.1111/cid.12310

• dental prosthesis
• implant impression
• implant misfit
• impression accuracy
• optical scanning

BackgroundSeveral studies link the seamless fit of implant-supported prosthesis with the accuracy of the dental impression technique obtained during acquisition. In addition, factors such as implant angulation and coping shape contribute to implant misfit.
PurposeThe aim of this study was to identify the most accurate impression technique and factors affecting the impression accuracy.
Material and MethodsA systematic review of peer-reviewed literature was conducted analyzing articles published between 2009 and 2013. The following search terms were used: implant impression, impression accuracy, and implant misfit. A total of 417 articles were identified; 32 were selected for review.
ResultsAll 32 selected studies refer to in vitro studies. Fourteen articles compare open and closed impression technique, 8 advocate the open technique, and 6 report similar results. Other 14 articles evaluate splinted and non-splinted techniques; all advocating the splinted technique. Polyether material usage was reported in nine; six studies tested vinyl polysiloxane and one study used irreversible hydrocolloid. Eight studies evaluated different copings designs. Intraoral optical devices were compared in four studies.
ConclusionsThe most accurate results were achieved with two configurations: (1) the optical intraoral system with powder and (2) the open technique with splinted squared transfer copings, using polyether as impression material.

• 出版日期2015-10