Force decay and elongation of orthodontic elastomeric chains exposed to different beverages common in the diet: An in vitro study.

Background: Elastomeric chains promote controlled movements and are widely used in orthodontics.

Objectives: The aim of the study was to evaluate the force decay and elongation of orthodontic chains exposed to low-pH saliva (pH = 4) and different beverages common in the diet.

Material And Methods: Force decay and elongation were determined in vitro at 6 time intervals over 21 days for 2 commercial elastomeric chains - Ormco (group A) and Borgatta (group B).

Nanoparticle Detection on SEM Images Using a Neural Network and Semi-Synthetic Training Data.

Processing images represents a necessary step in the process of analysing the information gathered about nanoparticles after characteristic material samples have been scanned with electron microscopy, which often requires the use of image processing techniques or general purpose image manipulation software to carry out tasks such as nanoparticle detection and measurement. In recent years, the use of networks has been successfully implemented to detect and classify electron microscopy images as well as the objects within them. In this work, we present four detection models using two versions of the YOLO neural network architectures trained to detect cubical and quasi-spherical particles in SEM images; the training datasets are a mixture of real images and synthetic ones generated by a semi-arbitrary method.

Copper nanoparticles as nanofillers in an adhesive resin system: An in vitro study.

Background: The incorporation of an antibacterial agent into an adhesive could improve its clinical performance. Some nanoparticles (NPs), including copper nanoparticles (Cu NPs), display an antibacterial effect. Therefore, Cu NPs could act as a nanofiller when added to an adhesive.

Anti-Inflammatory and Antibacterial Activity of the Chitosan/Chlorhexidine Gel Commercial Preparation for Postexodontia Treatment: An In Vitro Study.

Objective:  The present study aimed to assess the antibacterial activity, cytotoxicity, and the expression of prostaglandin E (PGE) of Bexident post topical gel (BP).

Materials And Methods:  The broth dilution test was performed to analyze the antimicrobial activity of BP against , , and . Minimal bactericidal concentrations (MBCs) and minimal inhibitory concentrations (MICs) were assessed.

Reported epidemiology of cancer of the lip, oral cavity and oropharynx in Mexico.

En 2008, la Organización Mundial de la Salud reportó que el 13% de las muertes en todo el mundo estuvieron relacionadas con el cáncer. Debido a su magnitud, es un problema prioritario de salud pública del cual se requiere información epidemiológica suficiente para optimizar programas nacionales de salud. El objetivo de esta revisión de la literatura es describir los tipos de cáncer más comunes de labio, cavidad oral y orofaringe reportados en la población mexicana.