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DEMINERALIZED

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https://www.readbyqxmd.com/read/28727472/relieving-dry-mouth-varying-levels-of-ph-found-in-bottled-water
#1
Bailey Jean Fisher, Angela Spencer, Van Haywood, Gayathri Konchady
It is estimated that 30% of people older than 60 years suffer from hyposalivation or dry mouth. Drinking water frequently has been recommended as a safe, non-pharmacologic way to combat hyposalivation. The saliva in patients with dry mouth is acidic. Beverages consumed daily may have an erosive potential on teeth. The pH and the mineral content of the beverage determine its erosive potential. An acidic beverage, therefore, may have harmful effects on mineralized tooth structures, causing erosion of enamel, dentin, and cementum...
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28727319/novel-evaluation-and-treatment-techniques-for-white-spot-lesions-an-in-vitro-study
#2
T A Bakhsh, A S Bakry, M M Mandurah, M A Abbassy
OBJECTIVE: White spot lesions (WSLs) are commonly seen during and after orthodontic treatment. Therefore, the objective of this in vitro study was to assess the effect of 45S5-bioglass in remineralizing WSLs using cross-polarization optical coherence tomography (CP-OCT) and confirm the findings by micro-hardness test. METHODS: Ceramic orthodontic brackets were bonded to the buccal surface of 45 human premolars with Transbond XT primer followed by Transbond PLUS according to the manufacturer's instructions...
August 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28726011/thermal-structural-and-acetylation-behavior-of-snail-and-periwinkle-shells-chitin
#3
Oluwashina Philips Gbenebor, Emmanuel Isaac Akpan, Samson Oluropo Adeosun
This article reports a successful removal of CaCO3 from snail and periwinkle shells for the purpose of producing high quality chitin for possible application as bio-fillers in bone fixation materials. Experiment was designed with varying concentrations of acid and alkali for demineralization, deproteinization and deacetylation of the samples. Thermal characteristics, morphology, degree of de-acetylation, crystalline structure and hydrogen bonding characteristics of the extracted chitin were examined. Infra-red spectra, thermogravimetric analysis and X-ray diffraction patterns show that demineralization with 1...
July 19, 2017: Progress in biomaterials
https://www.readbyqxmd.com/read/28721319/combined-sacroplasty-and-iliosacral-fixation-using-triangular-titanium-implants-for-the-treatment-of-sacral-insufficiency-fractures-with-concomitant-sacral-instability
#4
Ryan Johnson, Jason Seibly
Sacral insufficiency fractures (SIFs) are a common, under-recognized cause of debilitating low back pain, particularly in elderly patients with osteoporotic bone disease or risk factors for bone demineralization. Conservative therapy has been the mainstay of treatment for these types of fractures. This places patients at increased risk for the development of secondary illnesses associated with prolonged immobility, which might prevent a full return to the preinjury level of function. Surgical intervention for SIFs has increased over the past two decades in an attempt to overcome these complications and improve patient functionality...
June 14, 2017: Curēus
https://www.readbyqxmd.com/read/28720940/recovery-of-protein-hydrolysate-and-chitosan-from-black-tiger-shrimp-penaeus-monodon-heads-approaching-a-zero-waste-process
#5
Pham Thi Dan Phuong, Nguyen Cong Minh, Hoang Ngoc Cuong, Nguyen Van Minh, Nguyen The Han, Nguyen Van Hoa, Ha Thi Hai Yen, Trang Si Trung
Shrimp heads are considered as a potential source for the recovery of many valuable components such as chitin, protein and carotenoids. In the present study, both protein hydrolysate and chitin/chitosan were recovered using combination of physical, biological and chemical treatments. Shrimp heads were separated from liquid phase by a facile and efficient physical pretreatment. The liquid fraction was then hydrolyzed using formic acid and vacuum concentrated to obtain an astaxanthin-rich protein hydrolysate...
June 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28718095/changes-in-sub-soil-river-water-quality-upon-its-open-storage-a-case-study
#6
A K Mohanty, K K Satpathy, M V R Prasad
A study was carried out to investigate the changes in the physicochemical and biological properties of sub-soil river water upon its storage in a man-made reservoir. Palar sub-soil and reservoir water samples were collated fortnightly for a period of 5 years (2010-2014). The open reservoir is used as a reliable raw water source for condenser cooling systems and for the demineralizing (DM) plant input of Fast Breeder Test Reactor (FBTR), Madras Atomic Power Station (MAPS), and other laboratories at Kalpakkam, southeast coast of India...
August 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28715508/biofilm-extracellular-polysaccharides-degradation-during-starvation-and-enamel-demineralization
#7
Bárbara Emanoele Costa Oliveira, Jaime Aparecido Cury, Antônio Pedro Ricomini Filho
This study was conducted to evaluate if extracellular polysaccharides (EPS) are used by Streptococcus mutans (Sm) biofilm during night starvation, contributing to enamel demineralization increasing occurred during daily sugar exposure. Sm biofilms were formed during 5 days on bovine enamel slabs of known surface hardness (SH). The biofilms were exposed to sucrose 10% or glucose + fructose 10.5% (carbohydrates that differ on EPS formation), 8x/day but were maintained in starvation during the night. Biofilm samples were harvested during two moments, on the end of the 4th day and in the morning of the 5th day, conditions of sugar abundance and starvation, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28713645/effects-of-a-novel-disc-formulation-on-dry-mouth-symptoms-and-enamel-remineralization-in-patients-with-hyposalivation-an-in-vivo-study
#8
Jessica Ho, Miracle Vania Firmalino, Afarin Golabgir Anbarani, Thair Takesh, Joel Epstein, Petra Wilder-Smith
BACKGROUND: The goal of this study was to identify the in vivo effects in patients with hyposalivation of a novel slowly dissolving adhering test disc upon on enamel remineralization, oral biofilm, salivary production, pH and buffering, gingival health, and on self-evaluation of oral well-being. METHODS: Five subjects with xerostomia wore custom made retainers carrying 5 demineralized enamel chips for periods of 1 week each. In 1 study arm, subjects used the test agent plus oral hygiene self-care; in the other they used oral hygiene self-care only, with a 1 week washout in between arms...
February 2017: Dentistry: Current Research
https://www.readbyqxmd.com/read/28711804/effect-of-iron-iii-ion-on-moso-bamboo-pyrolysis-under-microwave-irradiation
#9
Qing Dong, Xiangqian Li, Zhaoyu Wang, Yanhong Bi, Rongling Yang, Jinfeng Zhang, Hongzhen Luo, Miaomiao Niu, Bo Qi, Chen Lu
The effect of iron(III) ion on microwave pyrolysis of moso bamboo was investigated. Hydrofluoric acid washing was used as a pilot process to demineralize moso bamboo in order to eliminate the influences of the other inorganics contained in moso bamboo itself. The results indicated that the addition of iron(III) ion increased the maximal reaction temperatures under microwave condition dependent on the amount of the added iron(III) ion. The production of the non-condensable gases was promoted by the addition of iron(III) ion mainly at the expense of liquid products...
July 5, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28708608/magnetic-schiff-s-base-sorbent-based-on-shrimp-peels-wastes-for-consummate-sorption-of-chromate
#10
Khalid Z Elwakeel, Ahmed M Elgarahy, Samya H Mohammad
Magnetic Schiff's base chitosan composite has been prepared starting from shrimp peels as a raw material. Chitosan extraction involved three main stages as preconditioning, demineralization deproteinization and deacetylation. Chitosan modification process took place through the reaction between chitosan and polymeric Schiff's base of thiourea/glutaraldehyde in the presence of magnetite. The synthetic hybrid composite was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy-energy dispersive X-ray analyses and tested as sorbent for Cr(VI) recovery from aqueous solution...
July 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28699676/influence-of-multi-wavelength-laser-irradiation-of-enamel-and-dentin-surfaces-at-0-355-2-94-and-9-4%C3%A2-%C3%AE-m-on-surface-morphology-permeability-and-acid-resistance
#11
Nai-Yuan N Chang, Jamison M Jew, Jacob C Simon, Kenneth H Chen, Robert C Lee, William A Fried, Jinny Cho, Cynthia L Darling, Daniel Fried
OBJECTIVE: Ultraviolet (UV) and infrared (IR) lasers can be used to specifically target protein, water, and mineral, respectively, in dental hard tissues to produce varying changes in surface morphology, permeability, reflectivity, and acid resistance. The purpose of this study was to explore the influence of laser irradiation and topical fluoride application on the surface morphology, permeability, reflectivity, and acid resistance of enamel and dentin to shed light on the mechanism of interaction and develop more effective treatments...
July 12, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28690085/comparison-of-cone-beam-computed-tomography-and-digital-intraoral-radiography-performance-in-the-detection-of-artificially-induced-recurrent-caries-like-lesions
#12
Saulo Leonardo Sousa Melo, Manuella Dias Furtado Belem, Lucia Trazzi Prieto, Cinthia Pereira Machado Tabchoury, Francisco Haiter-Neto
OBJECTIVES: The aim of this study was to compare the performance of cone beam computed tomography (CBCT) and digital radiography in the detection of artificial recurrent caries-like lesions under amalgam and composite fillings. STUDY DESIGN: The study included class II cavities in 30 molars that had been filled with amalgam. Fifteen of those molars had the restoration-enamel interface artificially demineralized. Phantoms were prepared, and CBCT images were acquired with 2 units in 3 voxel sizes (K9000, 0...
May 11, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28689018/optimizing-concentration-of-titanium-tetrafluoride-solution-for-human-dentine-remineralization
#13
Peng Wang, Jianghong Gao, Danyang Wang, Malcolm L Snead, Juedan Li, Jianping Ruan
OBJECTIVE: The aim of the present study was to select the optimal concentration of TiF4 solution to facilitate the remineralization of early dentine caries lesions. DESIGN: Sixty human dentine specimens were cut and randomly divided into 6 groups (1%, 2%, 3%, 4% TiF4 groups, 2.712% NaF group and distilled deionized water (DDW) control group). Artificial dentine caries-like lesions were created. After being subjected to fluoride treatment and immersed in remineralizing solution for 2weeks, the specimens were observed by microCT, scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS)...
July 1, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28688234/separation-and-characterization-of-unknown-impurities-in-cefonicid-sodium-by-trap-free-two-dimensional-liquid-chromatography-combined-with-ion-trap-time-of-flight-mass-spectrometry
#14
Jian Wang, Yu Xu, Yunfeng Zhang, Hong Wang, Weihui Zhong
RATIONALE: Seven unknown antibiotic impurities in cefonicid sodium were separated and characterized by a trap-free two-dimensional liquid chromatography coupled to high resolution ion trap/time-of-flight mass spectrometry s2D LC-IT-TOF MS) with positive and negative modes of electrospray ionization method. Trap-free two-dimensional liquid chromatography and online demineralization technique made it possible to characterize cefonicid sodium in the condition of the official standard, and the TIC chromatogram of LC-MS was in conformity with the LC chromatogram of the official analytical method in the peak sequence of impurities...
July 8, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28687387/hybrid-hydrogels-with-high-strength-and-biocompatibility-for-bone-regeneration
#15
Yongjiang Zheng, Keqing Huang, Xinru You, Bingxue Huang, Jun Wu, Zhipeng Gu
The development of hydrogels for bone regeneration has highlighted the challenge that load-bearing hydrogels need to be biocompatible while achieving high strength. Several approaches have been reported to improve the toughness of hydrogels, but achieving high toughness and biocompatibility simultaneously remains a challenge. Here we report a polyacrylic acid/alginate/demineralized bone matrix (PAA/Alg/DBM) hybrid double network hydrogel, which was synthesized by a two-step sequential polymerization with embedded DBM, possessing both high strength and biocompatibility...
July 4, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28684346/antibiotic-loaded-bone-graft-for-reduction-of-surgical-site-infection-in-spinal-fusion
#16
Stefanie M Shiels, Vivek P Raut, Patrick B Patterson, Brian R Barnes, Joseph C Wenke
BACKGROUND CONTEXT: Infections remain a leading complication associated with spinal arthrodesis, regardless of the use of prophylactic antibiotics and improved surgical techniques, with incidence of infection as high as 8.2%. Infection prolongs antibiotic usage, increases hospital time, and inevitably inflates overall treatment costs. Local antibiotics, such as vancomycin, have been used in combination with fusion materials over the past decade to decrease infection risk. An ideal graft material would serve a dual role: encourage vertebral fusion while reducing incidence of infection...
July 3, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28683667/early-immunomodulatory-effects-of-implanted-human-perivascular-stromal-cells-during-bone-formation
#17
Carolyn A Meyers, Jiajia Xu, Lei Zhang, Greg Asatrian, Catherine Ding, Noah Yan, Kristen Broderick, Justin Sacks, Raghav Goyal, Xinli Zhang, Kang Ting, Bruno Péault, Chia Soo, Aaron W James
Human perivascular stem/stromal cells (PSC) are a multipotent mesodermal progenitor cell population defined by their perivascular residence. PSC are most commonly derived from subcutaneous adipose tissue, and recent studies have demonstrated the high potential for clinical translation of this fluorescence activated cell sorting (FACS) derived cell population for bone tissue engineering. Specifically, purified PSC induce greater bone formation than unpurified stroma taken from the same patient sample. Here, we examined the differences in early innate immune response to human PSC or unpurified stroma (stromal vascular fraction, SVF) during the in vivo process of bone formation...
July 6, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28671790/-update-in-hiv-therapy-tenofovir-alafenamide
#18
Anne-Sophie Sauvage, Gilles Darcis, Michel Moutschen
Since the first treatments against human immunodeficiency virus (HIV) have appeared in 1987, important progress has been accomplished. Twenty-four molecules are currently available but only some of them are in common use on account of their easy administration or their weak adverse effects. Tenofovir disoproxil fumarate (TDF) is a commonly used nucleoside reverse-transcriptase inhibitor (NRTI) of HIV. However, taking TDF is sometimes associated with renal toxicity and increased bone demineralization. Tenofovir alafenamide (TAF) is a new prodrug of tenofovir (TFV) whose security profile is more interesting as far as renal and bone complications are concerned, due to a much lower serum concentration and a high intracellular concentration...
August 24, 2016: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28668613/%C3%AE-chitin-and-chitosan-from-squid-gladius-biological-activities-of-chitosan-and-its-application-as-clarifying-agent-for-apple-juice
#19
Baha Eddine Abdelmalek, Assaâd Sila, Anissa Haddar, Ali Bougatef, Mohamed Ali Ayadi
Chitin is the second most abundant polysaccharide in biomass after cellulose and the term chitosan usually refers to a family of polymers obtained after chitin deacetylation. The aim of this work was the preparation and the characterization of chitin and chitosan from the gladius (pen) of the European squid (Loligo vulgaris). A high level of deproteinization (more than 80%) was recorded using Alcalase(®) with an enzyme/protein ratio of 10U/mg. The demineralization of the gladius was completely achieved within 8h at room temperature in HCl...
June 28, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28667922/combination-of-hydroxyapatite-platelet-rich-fibrin-and-amnion-membrane-as-a-novel-therapeutic-option-in-regenerative-periapical-endodontic-surgery-case-series
#20
Uday Kiran Uppada, Butchibabu Kalakonda, Pradeep Koppolu, Narendra Varma, Kiran Palakurthy, Venkatesh Manchikanti, Shilpa Prasad, Shereen Samar, Lingam Amara Swapna
INTRODUCTION: Periapical surgery is the last resort in the arsenal of an endodontist to effectively deal with periapical lesions that result from necrosis of the pulp. Bone grafts, growth factors and membranes form an array of regenerative materials that influence the healing outcome of periapical surgery. PRESENTATION OF CASE: The main purpose of the two cases reported here was to assess the potential benefits of a combination of bone graft, platelet-rich fibrin (PRF) and amnion membrane in terms of reduced post-operative discomfort, radiographic evidence of accelerated periapical bone healing and present a novel therapeutic option in the management of large periapical lesions...
June 15, 2017: International Journal of Surgery Case Reports
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