The Efficacy of 3 Bleaching Methods on Stained Polymer-Based CAD/CAM Materials.

ABSTRACT:

Introduction and aims

This study aimed to investigate the efficacy of 3 bleaching methods on stained polymer-based CAD/CAM blocks in terms of surface roughness, hardness stability, discolouration reduction and susceptibility to re-staining following bleaching.

Methods

Two-mm-thick slabs (N = 128) were prepared from CeraSmart (CS), Grandio Blocs (GB), Vita Enamic (VE), and direct resin composite GrandioSO (RC). Coffee-stained specimens (n = 8) were subdivided into bleaching (BL) groups: in-office bleaching (OB), home bleaching (HB), whitening mouthwash (MW), and a control group with 14-day storage in water (CL). Measurements of roughness (Ra), Vickers hardness (HV), and colour parameters (ΔE_00, ΔL*, Δb*) were taken before and after BL. Then, all the bleached specim

SUBMITTER: Babaier R 

PROVIDER: S-EPMC11976629 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature