Publications by authors named "A De Bona"
Objectives: To evaluate the influence of microstructure and chemical composition on the optical properties of CAD-CAM lithium disilicate glass-ceramics.
Methods: Samples (n = 5; 1.0 mm thickness) of shades A1, A2, and A3 were fabricated from CAD-CAM ceramic blocks (Ivoclar Vivadent): IPS e.
Article Synopsis
- The study examined the fatigue lifetime of reduced-diameter dental implants placed in either bovine rib or polymer-based bone models.
- Results indicated that implants in bovine ribs had better data dispersion and longer fatigue lifetimes compared to those in polymer models, though no statistically significant difference was found between the two groups.
- Bovine ribs are suggested to be a more effective material for accelerated life testing due to their superior performance in data reliability.
Arrhythmogenic cardiomyopathy (AC) is a familial cardiac disease, mainly caused by mutations in desmosomal genes, which accounts for most cases of stress-related arrhythmic sudden death, in young and athletes. AC hearts display fibro-fatty lesions that generate the arrhythmic substrate and cause contractile dysfunction. A correlation between physical/emotional stresses and arrhythmias supports the involvement of sympathetic neurons (SNs) in the disease, but this has not been confirmed previously.
View Article and Find Full Text PDFBackground: To evaluate the effect of different finishing and polishing systems on the surface roughness and color changes of bis-acryl (Protemp 4 - 3M ESPE- St. Paul, USA; Structur 3 - Voco, Cuxhaven, Germany) and chemically activated acrylic materials (Duralay - Reliance, SP, Brazil).
Material And Methods: Specimens (10 x 2 mm) thick were prepared for each material.
Article Synopsis
- The study aimed to explore fatigue testing methods for translucent zirconia dental materials and their correlation with in vivo failures.
- A total of 4555 studies were initially found, but after filtering, only 41 relevant articles were included in the review.
- The step-stress method was the most commonly used fatigue testing approach, and while most fractures occurred at the cementation or contact surfaces, only three studies reported failures that matched clinical observations.