Efecto del pulido y cambio de color de las resinas compuestas expuestas a tinción de café.

Abstract

Introduction: Nowadays, composite resins are materials that are widely used in our dental practice, with the aim of achieving greater aesthetics, thus improving the patient's quality of life. Objectives: To determine whether polishing acts as a protective barrier against color changes caused by coffee through artificial aging by thermocycling. Materials and methods: Two types of resins with nanohybrid and microhybrid particles of A2 tone will be used. The samples were manufactured in discs of 2 mm height and 5 mm diameter which will be divided into groups and subgroups, a group consisting of 40 resin samples will be subjected to a polishing process, application of glycerin and subjected to 40s and 60s of curing and the other group consisting of 40 resin samples will not be applied polishing or glycerin and will be subjected to 40s and 60s. All groups will be subjected to coffee staining to accelerate the aging process and color measurement will be carried out through a spectrophotometer. Results: The nanohybrid resins in this study were the ones that obtained the least color change except for the microhybrid ones which were the most pigmented after polishing/glycerin whether a curing time of 40 or 60 seconds was used. Conclusions: Microhybrid resins suffered a more unfavorable color change than nanohybrid resins.