Posterior restorations with impression resins: a randomized, controlled pilot study

Abstract

Objective: To compare the behavior and performance of posterior impression resin restorations (Permanent Crown Resin) with posterior ceramic restorations (lithium disilicate). Methodology: A prospective longitudinal clinical trial will be conducted in adult patients requiring more than one restoration in the posterior region. A split-mouth design will be used, and teeth will be randomized into two groups: the study group: 3D printing with light-cured resin (Permanent Crown Resin) and the control group: milled glass-ceramic. To compare the clinical behavior of these indirect restorations manufactured using the two technologies, a calibrated observer will analyze the degree of clinical wear, presence of fractures or defects, marginal adaptation, and color stability, with an assessment at six months. The level of significance will be set at p ≤ 0.05. The study will be submitted for review by the UCU Ethics Committee. Expected results: Favorable functional and aesthetic results are expected for posterior restorations made with printed resins after 6 months of clinical follow-up, comparable to those obtained with ceramic restorations, with the benefit of a lower cost.