Purpose: The aim of the present study was to evaluate the alterations of surface microhardness and wear caused by the sodium bicarbonate jet on bovine enamel and the further remineralizing effect of artificial saliva.
Methods: Fifteen enamel samples (4,0mm x 4,0mm) were used, which constituted the groups: no treatment (MI); treatment with sodium bicarbonate jet (MII and DI); treatment with sodium bicarbonate jet and immersion in saliva for one hour (MIII and DII), 24 hours (MIV and DIII) and 7 days (MV and DIV). Microhardness tests were carried out using a microdurometer in groups M and wear tests by a rugosimeter in groups D. The data were assessed by the one criterion variance analysis and Tukey test.
Results: The mean value of microhardness, in KHN, in groups MI, MII, MIII, MIV and MV were 359,80; 335,46; 369,20; 377,73 and 341,86, respectively, whereas the mean values in microm, of wear for group DI, DII, DIII and DIV were 0,564; 0,519; 0,441 and 0,428, respectively.
Conclusions: The sodium bicarbonate jet caused a wear and a reduction in microhardness on the enamel surface; saliva promoted the recovery of initial condition surface microhardness and reduced the wear; the repairing effect of saliva on the surface microhardness alterations occurred within one hour of treatment, having no significant statistical difference from the effect obtained in 24 hours; the best saliva repairing effect on the wear occurred with treatment of 24 hours.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327196 | PMC |
| http://dx.doi.org/10.1590/s1678-77572006000300009 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Ideal burn resuscitation: a step toward resolving the dilemma in acute flame burn management.
Int J Burns Trauma
December 2024
Burn Care Center, Pakistan Institute of Medical Sciences (G-8/3), Shaheed Zulfiqar Ali Bhutto Medical University Islamabad, Pakistan.
Following severe burns, the predominant concern is significant fluid loss, for which balanced crystalloid solutions are widely recommended as the primary intravenous resuscitation fluids. However, current literature lacks a clear distinction among various buffered crystalloid types that might be most effective in the early resuscitation of burn patients. This retrospective study was conducted to identify the optimal resuscitation fluid for major burns and to assess the clinical outcomes associated with isotonic crystalloid solutions compared to hypotonic crystalloids, specifically in terms of urinary output, acid-base balance, and electrolyte stability.
View Article and Find Full Text PDFIn vitro comparison of cerumenolytic efficacy: 2.5 % sodium bicarbonate versus 0.5 % sodium docusate based on cerumen weight gain.
Am J Otolaryngol
January 2025
Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
Objective: This study aimed to compare the cerumenolytic efficacy of 2.5 % sodium bicarbonate prepared in-house with that of commercially available 0.5 % sodium docusate, utilizing cerumen weight gain and disintegration degree as metrics.
View Article and Find Full Text PDFEffects of sodium bicarbonate on 200 m time trial performance and physiological responses in swimmers: a systematic review and meta-analysis of randomized controlled trials.
Res Sports Med
January 2025
School of Physical Education and Sports Science, South China Normal University, Guangzhou, Guangdong, P.R. China.
This systematic review and meta-analysis evaluated the effects of sodium bicarbonate (NaHCO₃) supplementation on 200 m time trial performance and physiological responses in swimmers, following PRISMA guidelines. A comprehensive search across five databases identified eligible randomized controlled trials comparing NaHCO₃ with placebo. Outcomes were 200 m time, blood bicarbonate, blood lactate, and blood pH.
View Article and Find Full Text PDFEnhancing Syagrus romanzoffiana lignocellulosic fibers' properties by ecological treatment with sodium bicarbonate for applications in sustainable lightweight biocomposites.
Int J Biol Macromol
January 2025
Chemical Engineering Department, College of Engineering, University of Ha'il, PO Box 2440, Ha'il 81441, Saudi Arabia; Chemical Engineering Department, Faculty of Engineering, University of Blida, PO Box 270, Blida 09000, Algeria.
Investigating the fascinating world of natural fibers, where Syagrus romanzoffiana fibers (SrFs) are promising substitutes for glass and synthetic fibers in composite materials, is more than interesting. The improvement of SrFs through an environmentally friendly treatment employing sodium bicarbonate (NaHCO₃) at different concentrations (5 %, 10 %, 20 %, and 30 % by weight) over various durations (24, 72, and 168 h) is the subject of this study. The objective is to provide a sustainable and economical approach to enhancing fiber characteristics.
View Article and Find Full Text PDFDetermination of reference intervals of venous blood gas and acid-base parameters in clinically healthy awake cats.
J Vet Emerg Crit Care (San Antonio)
January 2025
Department of Veterinary Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, California, USA.
Background: Venous blood gas and acid-base analysis is often performed in cats and requires appropriate reference intervals (RIs) for interpretation. The currently available RIs were created from small numbers of cats, while current guidelines suggest that a minimum number of 40 samples is required for the creation of an accurate/appropriate RI.
Key Findings: In 41 healthy awake cats, pH, PCO, PO, sodium, potassium, ionized calcium, chloride, glucose, and plasma lactate concentrations were measured, while bicarbonate, standardized base excess, and anion gap were calculated.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!