Relationship between post-traumatic stress disorder and fear of progression in stroke patients: the mediating role of perceived social support and coping styles.

Objective: Fear of progression (FoP) among stroke patients is closely associated with post-traumatic stress disorder (PTSD), perceived social support, and coping styles. However, there is still limited research on the mechanism of interaction among these four factors. The purpose of this study was to investigate the mediating role of coping styles and perceived social support in the relationship between FoP and PTSD among stroke patients.

[Effect of hydrofluoric acid concentration on the surface morphology and bonding effectiveness of lithium disilicate glass ceramics to resin composites].

Objective: This study aimed at determining the influence of hydrofluoric acid (HF) in varied concentrations on the surface morphology of lithium disilicate glass ceramics and bond durability between resin composites and post-treated lithium disilicate glass ceramics.

Methods: After being sintered, ground, and washed, 72 as-prepared specimens of lithium disilicate glass ceramics with dimensions of 11 mm×13 mm×2 mm were randomly divided into three groups. Each group was treated with acid solution [32% phosphoric acid (PA) or 4% or 9.