Evaluación de exactitud de los métodos convencionales y digitales para obtener impresiones dentales.

Abstract

Introduction: To provide optimal dental treatment, it is crucial that oral impressions are accurate (precision and trueness). Currently, in addition to conventional or analog impressions, there are digital ones. Having previously determined which intraoral scanners, materials, and conventional methods provide the most accurate results, the question is which of these two types of impressions, used correctly, provides greater accuracy. Objective: To determine the accuracy of conventional and digital methods for obtaining dental impressions. Materials and methods: This systematic review article design is comparative, descriptive, and analytical. It employs a deductive method in the selection of bibliography, and it is qualitative, non-experimental, and documentary research. The sample consists of 48 scientific articles, accessed through the UCSG virtual library and other reliable and viable sources such as PubMed and Cochrane. Analysis-Discussion: Conventional impressions turned out to be less accurate and precise than digital ones. The conventional material that provided greater accuracy and precision was polyvinyl siloxane with the two-step impression technique, while the TRIOS scanner had greater accuracy, precision, and trueness, when compared to the other scanners. Conclusion: Digital impressions obtain greater accuracy, precision, and veracity vs. conventional impressions. This is true for short distances, FDP tooth preparations, and for implant impressions in vitro studies.