• Bennetsen Espinoza posted an update 6 months ago

    oncentration, ascertain the mechanism of action, and identify the pathogen-specific action of charcoal.Calcifications in the tunica media (middle layer of the arterial wall), classified as Mönckeberg arteriosclerosis, are more prevalent in older patients and patients with diabetes and/or chronic kidney disease. Mönckeberg arteriosclerosis has prevalence rates of 13.3% and 6.9% in men and women, respectively, and can be observed as a railroad track pattern on imaging studies. this website With the advent of cone beam computed tomography in dentistry, Mönckeberg arteriosclerosis is usually observed as an incidental finding. This case report describes a unique presentation of Mönckeberg arteriosclerosis in the carotid, facial, and lingual arteries of a 66-year-old man.A supernumerary root is a developmental condition occurring due to disturbances in the Hertwig epithelial root sheath. Supernumerary roots are rare in primary mandibular molars, and the etiology is uncertain. However, it is crucial for dental practitioners to be aware that extra roots may be present in primary teeth and provide accurate diagnosis when they occur. An extra root or canal that is not identified during endodontic treatment can lead to treatment failure. The present report describes 2 cases of primary mandibular second molars with supernumerary roots showing carious involvement. In one of the patients, the molar had 2 supernumerary roots and was treated successfully by pulpectomy. In the other patient, the molar had 1 supernumerary root. The tooth was extracted, and a space maintainer was placed.The aim of this in vitro study was to investigate the erosive effect of a soft drink on primary teeth before and after restoration. Enamel blocks were obtained from 64 primary canines (N = 144) and divided into 3 groups (n = 48) 1, erosive challenge before and after restoration; 2, erosive challenge after restoration; and 3, no erosive challenge (control). The blocks received standardized preparations and were restored with 1 of 4 materials (n = 12) composite resin, bulk-fill composite resin, conventional glass ionomer cement, or resin-modified glass ionomer cement. The erosive challenge consisted of immersing the blocks in a cola soft drink for 1 minute at 25°C, 4 times a day for 5 days. The microhardness, roughness, marginal infiltration, and marginal adaptation of the specimens in all 3 groups were evaluated. Data were analyzed with the Kruskal-Wallis and Bonferroni tests. The results showed that the erosive challenge significantly altered all of the evaluated properties of all of the restorative materials (P less then 0.05). The erosive challenge decreased the microhardness and marginal adaptation and increased the roughness and marginal infiltration of the tested materials. Composite resin had the highest values for microhardness and marginal adaptation as well as the lowest roughness value and dye infiltration score both with and without the erosive challenge. Subjecting teeth to erosive challenge before and after restoration altered the enamel microhardness and roughness significantly more than did erosive challenge only after restoration. Composite resin was the material least affected by the erosive challenge.Sleep apnea has 2 variants that are classified by their etiologic mechanism, namely, an obstructive or a central origin. Despite the clinical and scientific advancements in obstructive sleep apnea (OSA) over the past 20 years, a majority of affected patients remain undiagnosed. This article reviews aspects of unmanaged OSA, including the oral and maxillofacial signs and symptoms, systemic risk factors, diagnostic criteria, guidelines for patient referral to a sleep physician, and clinical management techniques. Additionally, the role of dentists in oral appliance therapy is explored.Silver diamine fluoride (SDF) has been used in management of dentinal hypersensitivity and dental caries. This in vitro study evaluated the antimicrobial effects of SDF on subgingival microorganisms from severe human periodontitis lesions. Subgingival biofilm specimens from 24 adults with severe periodontitis were mixed in vitro with 19% or 38% SDF or left untreated (n = 24 per group) and then inoculated on enriched Brucella blood agar with anaerobic incubation. Selected red- and orange-complex periodontal pathogens were phenotypically identified in the subgingival specimens, including Porphyromonas gingivalis, Tannerella forsythia, Prevotella intermedia/nigrescens, Parvimonas micra, Campylobacter rectus, Fusobacterium nucleatum, and Streptococcus constellatus. Other microbial species recovered from SDF-treated specimens were identified using matrix-assisted laser desorption- ionization time-of-flight mass spectrometry. The SDF-treated specimens yielded significantly lower mean total viable counts and signifitic use for SDF in the management of human periodontal infections.How the brain dynamics change during anesthetic-induced altered states of consciousness is not completely understood. The α2-adrenergic agonists are unique. They generate unconsciousness selectively through α2-adrenergic receptors and related circuits. We studied intracortical neuronal dynamics during transitions of loss of consciousness (LOC) with the α2-adrenergic agonist dexmedetomidine and return of consciousness (ROC) in a functionally interconnecting somatosensory and ventral premotor network in non-human primates. LOC, ROC and full task performance recovery were all associated with distinct neural changes. The early recovery demonstrated characteristic intermediate dynamics distinguished by sustained high spindle activities. Awakening by the α2-adrenergic antagonist completely eliminated this intermediate state and instantaneously restored awake dynamics and the top task performance while the anesthetic was still being infused. The results suggest that instantaneous functional recovery is possible following anesthetic-induced unconsciousness and the intermediate recovery state is not a necessary path for the brain recovery.

    The management of type A thoracolumbar fractures varies from conservative treatment to multiple level fusion. Indeed, although Magerl defined the type A fracture as a strictly bone injury, several authors suggested associated disc lesions or degeneration after trauma. However, the preservation of mobility of the adjacent discs should be a major issue. This study was conducted to analyze the presence of immediate post-traumatic disc injuries and to know if discs degenerate after receiving treatment.

    We retrospectively reviewed the files of 27 patients with an AOspine A fracture, corresponding to 34 fractures (64 discs) with pre and post-operative MRI (mean follow-up 32.4 months). Based on Pfirrmann’s and Oner’s classifications of disc injuries, two observers analyzed independently the type of lesion in the discs adjacent to the fractured vertebra in immediate post-trauma and at the last follow-up.

    The immediate post-traumatic analysis according to Pfirrmann’s classification found 97% of the cranial adjacent discs and 100% of the caudal discs classified Pfirrmann 3 or less.

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