Publications by authors named "M A Valera"
Background: Survival at 25 years' follow-up for total hip arthroplasty (THA) has been reported at 5%-77%, with hydroxyapatite (HA) coating, due to its osteo-conductive properties, used to enhance implant fixation and survival. The progressive increase in life expectancy raises doubts regarding HA-coated THA survival and THA revision surgery risk. The aim of our study was to retrospectively analyse survival for primary uncemented fully HA-coated THA after 28 years' follow-up.
View Article and Find Full Text PDFThe Chowan River flows from southern Virginia through northeastern North Carolina and into the Albemarle Sound, a part of the second largest U.S. estuary.
View Article and Find Full Text PDFAntimicrobial and anti-endotoxin activity of N-acetylcysteine, calcium hydroxide and their combination against and lipopolysaccharides.
PeerJ
October 2024
Background: The management of endodontic infections is a complex challenge, mainly due to the involvement of diverse microorganisms and their by-products. This study aimed to evaluate the efficacy of N-acetylcysteine (NAC), calcium hydroxide (Ca(OH)), and their combined application as intracanal medications in combating , , and lipopolysaccharides (LPS) from .
Methods: A total of 60 single-rooted human teeth were carefully selected and divided into six groups.
Article Synopsis
- * Sixty teeth were divided into five groups to analyze different conditions of foraminal enlargement, and scanning electron microscopy was used to assess changes in foramen shape.
- * Results showed significant differences in foramen wear and shape transformation among all groups compared to the control, with enlargement creating round-shaped foramina, indicating that the files effectively change the foramen's characteristics.
In Vitro Evaluation of Sodium Hypochlorite, Chlorhexidine, Propolis, and Calcium Hydroxide Effect on Lipoteichoic-Acid-Induced Proinflammatory Cytokines Production.
Dent J (Basel)
September 2024
This study aimed to evaluate the effects of sodium hypochlorite (NaOCl), chlorhexidine (CHX), and the glycolic extract of propolis (GEP) as endodontic irrigants and of calcium hydroxide [Ca(OH)], CHX, or Ca(OH) + CHX as intracanal medications on the capacity of the lipoteichoic acid (LTA) of in macrophages' proinflammatory cytokines production. Freshly extracted 108 human single-rooted teeth were used in this study. The LTA of was standardized in double-distilled pyrogen-free water (250 µg/mL) and inoculated into the specimens subdivided into nine subgroups (n = 12).
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