Marginal fit of fixed prostheses obtained through conventional versus digital workflows. Systematic review.

Abstract

Precision in marginal fit essential in the success of fixed prostheses. In conventional techniques, different materials have been used over time to obtain the negative of already prepared teeth. In recent years, technology has evolved considerably, and with this, restorative dentistry has taken a leap, becoming digital dentistry. Digital dentistry aims to perfect the process by inducing different techniques and materials which aim to obtain restorations with greater precision and detail. Objective: Determine the accuracy of marginal adaptation of fixed prostheses generated from conventional workflows versus digital workflows. Materials and methods: A search was carried out in the Pubmed and Google schoolar database, under the inclusion criteria: systematic review and meta-analysis type studies published between 2018 and 2023. Results: from 1778 studies identified in the database, 12 articles that met the inclusion criteria were selected. It was demonstrated with 50% of the results that the digital workflow is superior in terms of marginal fit to conventional methods. In 40%, there are no significant differences between both workflows, and only 10% of the studies favor the conventional workflow. Conclusions: The digital workflow offers reliable prosthetic results, in turn, it provides better marginal fit in fixed prostheses compared to conventional workflows. However, further studies are recommended.