Most energy minimization-based restoration methods are developed for signal-independent Gaussian noise. The assumption of Gaussian noise distribution leads to a quadratic data fidelity term, which is appealing in optimization. When an image is acquired with a photon counting device, it contains signal-dependent Poisson or mixed Poisson–Gaussian noise. We quantify the loss in performance that oc...

BACKGROUND Non carious cervical lesions associated to muscle hyperfunctions are increasing. Microhybrid resin composites are used to restore cervical abfractions. The purpose of this study was to investigate if resin composites modify tooth plaque, inducing an increment of cariogenic microflora and evaluate their effect, in vivo and in vitro, against S. mutans. MATERIAL AND METHODS Eight abfr...

AIM To analyze retrospectively the surgical management of reducible atlantoaxial dislocation (AAD), basilar invagination (BI) and Chiari malformation (CHM) with syringomyelia through a single-stage posterior approach. MATERIAL AND METHODS Forty-three patients with reducible AAD, BI and CHM with syringomyelia underwent surgery from January 2009 to January 2013. Intraoperative restoration follo...

Introduction: The restoration material commonly used as core material for pulpless posterior teeth is mostly amalgam due to its high strength and low cost and it can be used with or without pin. The aim of this study was to evaluate the influence of post material on stress distribution in mandibular second premolar tooth by finite element analysis. Method: The stress distribution was analyzed i...

Objective:  To evaluate the improvement in masticatory performances two weeks after posterior implant restoration.  Material and Methods: Nine patients with missing first second molars were included study. Masticatory evaluated using subjective objective methods utilizing color-changeable chewing gum visual analog scale (VAS) assessment. The subjects asked to chew gums before restoration. Their...

introduction: this in vitro study evaluated the influence of composite thickness (with or without fiber reinforcement) on fracture resistance of direct restorations in endodontically treated teeth. methods and materials: fifty-six intact human premolars were chosen and randomly divided into four groups ( n =14). after preparation of a mesio-occluso-distal (mod) cavities and cusp reduction, the ...

The increased translocation of plant species for biodiversity restoration and habitat creation has provoked a debate on provenance and genotypic diversity of the used plant material. Nonlocal provenances are often not adapted to the local environmental conditions, and low population genotypic diversity may result in genetic bottlenecks hampering successful establishment. We tested provenance di...

The global convergence of ADMM for convex problems was given by He and Yuan in [5] under the variation inequality framework. However, since our optimization problem is non-convex, the convergence analysis for ADMM needs additional conditions. In non-convex optimization, convergence to a stationary point (local minimum) is the best convergence property that we can hope for. By imposing some cond...

1 Moral-Material Ontologies of Nature Conservation: Exploring the Discord between Ecological Restoration and Novel Ecosystems MICK LENNON Recent years have witnessed growing concern on how we should conduct conservation activities in a world of human-altered biophysical conditions. The ‘novel ecosystems’ perspective has emerged as a way to meet this challenge. However, its focus on accepting ‘n...

Adhesive dentistry has provided techniques and materials for conservative and esthetic options in every restorative practice. The understanding of the process of etching to form microscopic undercuts and infiltrating these gaps with resin to create an adhesive interface between tooth and restorative material has demonstrated long-term durable and well-sealed interfaces, resulting in excellent c...