The aim of this study was to carry out a literature review on the accuracy of conventional and digital dental impression methods, as well as present the various three-dimensional intraoral scanning systems. A bibliographic search was carried out in PUBMED’s main health database, in which works published between 2008 and 2018 were collected. Laboratory studies, case reports and systematic reviews were included, addressing topics that deal with conventional digital materials, impression and precision . Articles that did not evaluate impression materials, their behavior and techniques to obtain a good impression of oral structures were excluded. Through a review in the literature, obtained the following findings: the most critical stage in macking a dental prothesis is to take the dental impression. The conventional technique of impression consists of obtaining a negative copy of the intra-oral situation that will be poured into gypsum, obtaining a positive copy, on which the work will be carried out. Digital scanning systems were not superior to conventional moldings when comparing fidelity, accuracy and detail reproduction; in contrast, they were superior to conventional impression when considering clinical chair time, patient and operator preference, and patient comfort.
KEY WORDS: dental impression technique, technology, dental, printing, three-dimensional.
How to cite this article
CARVALHO, T. F.; LIMA, J. F. M.; DE MATOS, J. D. M.; LOPES, G. R. S.; DE VASCONCELOS, J. E. L.; ZOGHEIB, L. V. & DE CASTRO, D. S. M. Evaluation of the accuracy of conventional and digital methods of obtaining dental Impressions. Int. J. Odontostomat., 12(4):368-375, 2018.