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DEMINERALIZED

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https://www.readbyqxmd.com/read/29160402/effect-of-a-bioactive-glass-ceramic-on-the-control-of-enamel-and-dentin-erosion-lesions
#1
Michelle Alexandra Chinelatti, Camila Tirapelli, Silmara Aparecida Milori Corona, Renato Goulart Jasinevicius, Oscar Peitl, Edgar Dutra Zanotto, Fernanda de Carvalho Panzeri Pires-de-Souza
This study evaluated the effect of a bioactive glass ceramic for the control of erosion and caries lesions. Fragments (n=10) of bovine enamel and root dentin received daily application of different treatments (Biosilicate; Acidulated Phosphate Fluoride- APF; Untreated - control) during the performance of erosive cycles. Surfaces were analyzed with 3D optical profilometry to quantify the superficial loss in four periods (1, 7, 14 and 21 days), as well as the lesion depth with confocal laser scanning microscopy...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29159178/zinc-containing-hydroxyapatite-enhances-cold-light-activated-tooth-bleaching-treatment-in-vitro
#2
Yi Li, Xinchang Shi, Wei Li
Cold-light bleaching treatment has grown to be a popular tooth whitening procedure in recent years, but its side effect of dental enamel demineralization is a widespread problem. The aim of this study was to synthesize zinc-substituted hydroxyapatite as an effective biomaterial to inhibit demineralization or increase remineralization. We synthesized zinc-substituted hydroxyapatite containing different zinc concentrations and analysed the product using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and energy dispersive spectrometer (EDS)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29157063/effect-of-dentifrice-containing-ftcp-cpp-acp-and-fluoride-in-the-prevention-of-enamel-demineralization
#3
Suzana Carvalho Teixeira Pinto de Souza, Kaline Cassiano de Araújo, Joseane Ribeiro Barbosa, Viviane Cancio, Anderson Araújo Rocha, Mônica Almeida Tostes
OBJECTIVE: To evaluate the effect of different fluoride- and calcium- and/or phosphate-containing products on their ability to prevent enamel demineralization under pH cycling conditions. MATERIAL AND METHODS: Enamel bovine specimens were assigned to the following groups: G1-MPP (MI Paste Plus, 0.2% NaF, Recaldent™, GC Corporation Tokyo, Japan); G2-FD (Crest™ Cavity Protection, 0.243% NaF, Procter & Gamble, USA); G3-CLP (Clinpro™ 5000, 1.1% NaF, 3M ESPE, USA); and G4-CO (Control without fluoride, Silica-based dentifrice; Daudt Ltda, Brazil)...
November 20, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/29152623/margin-integrity-of-conservative-composite-restorations-after-resin-infiltration-of-demineralized-enamel
#4
Philipp Körner, Mohamed El Gedaily, Rengin Attin, Daniel B Wiedemeier, Thomas Attin, Tobias T Tauböck
PURPOSE: To investigate the influence of pretreating demineralized enamel with a caries infiltrant on the margin integrity of Class V composite restorations bonded with different adhesives. MATERIALS AND METHODS: A total of 60 specimens from bovine incisors were demineralized (21 days, acid buffer, pH 4.95) to create artificial enamel lesions, and circular Class V cavities were prepared. Cavities of half of the specimens were treated with either an unfilled etch-and-rinse adhesive (Syntac Classic; Ivoclar Vivadent), a filled etchand- rinse adhesive (Optibond FL; Kerr), or a self-etch adhesive (iBond Self Etch; Heraeus Kulzer) (n = 10 per group)...
November 17, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/29146168/bone-marrow-derived-mesenchymal-stromal-cells-enhanced-by-platelet-rich-plasma-maintain-adhesion-to-scaffolds-in-arthroscopic-simulation
#5
Alexander R Hoberman, Carl Cirino, Mary Beth McCarthy, Mark P Cote, Leo Pauzenberger, Knut Beitzel, Augustus D Mazzocca, Felix Dyrna
PURPOSE: To assess the response of bone marrow-derived mesenchymal stromal cells (bMSCs) enhanced by platelet-rich plasma (PRP) in the setting of a normal human tendon (NHT), a demineralized bone matrix (DBM), and a fibrin scaffold (FS) with simulated arthroscopic mechanical washout stress. METHODS: Bone marrow was aspirated from the humeral head and concentrated. BMSCs were counted, plated, and grown to confluence. Cells were seeded onto 3 different scaffolds: (1) NHT, (2) DBM, and (3) FS...
November 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29140136/salt-glycerol-induced-hyperhydration-enhances-fluid-retention-more-than-salt-or-glycerol-induced-hyperhydration
#6
Eric D B Goulet, Adrien De La Flore, Félix A Savoie, Jonathan Gosselin
Hyperhydration has been demonstrated to improve work capacity and cardiovascular and thermoregulatory functions, enhance orthostatic tolerance, slow or neutralize bone demineralization and decrease post-dive bubble formation. Adding sodium or glycerol to a hyperhydration solution optimizes fluid retention. Sodium and glycerol produce their effect through different physiological mechanisms. If combined into a hyperhydration solution their impact on fluid retention could potentially be greater than their singular effect...
November 15, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29135948/effect-of-a-lactobacillus-salivarius-probiotic-on-a-double-species-streptococcus-mutans-and-candida-albicans-caries-biofilm
#7
Wirginia Krzyściak, Dorota Kościelniak, Monika Papież, Palina Vyhouskaya, Katarzyna Zagórska-Świeży, Iwona Kołodziej, Beata Bystrowska, Anna Jurczak
The aim of the study was to evaluate the anti-cariogenic effects of Lactobacillus salivarius by reducing pathogenic species and biofilm mass in a double-species biofilm model. Coexistence of S. mutans with C. albicans can cause dental caries progression or recurrence of the disease in the future. Fifty-nine children with diagnosed early childhood caries (ECC) were recruited onto the study. The condition of the children's dentition was defined according to the World Health Organization guidelines. The participants were divided into children with initial enamel demineralization and children showing dentin damage...
November 14, 2017: Nutrients
https://www.readbyqxmd.com/read/29125909/calcium-phosphate-microspheres-as-a-delivery-vehicle-for-tooth-bleaching-agents
#8
T Mellgren, T Qin, C Öhman-Mägi, Y Zhang, B Wu, W Xia, H Engqvist
Bleaching of vital teeth has become common practice in cosmetic dentistry today. Tooth sensitivity and demineralization of the enamel are, however, common side effects associated with hydrogen and carbamide peroxide bleaching. This study investigated if calcium phosphate microspheres, which have remineralizing properties, could be used as an additive without hindering the diffusion of the bleaching agent and if the spheres could be used as a carrier for carbamide peroxide. A remineralizing agent could increase the safety of bleaching and decrease the severity of its side effects...
November 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29124078/demineralized-bone-matrix-to-augment-tendon-bone-healing-a-systematic-review
#9
Adam T Hexter, Catherine Pendegrass, Fares Haddad, Gordon Blunn
Background: Following injury to the rotator cuff and anterior cruciate ligament, a direct enthesis is not regenerated, and healing occurs with biomechanically inferior fibrous tissue. Demineralized bone matrix (DBM) is a collagen scaffold that contains growth factors and is a promising biological material for tendon and ligament repair because it can regenerate a direct fibrocartilaginous insertion via endochondral ossification. Purpose: To provide a comprehensive review of the literature investigating the use of DBM to augment tendon-bone healing in tendon repair and anterior cruciate ligament reconstruction (ACLR)...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29123323/enamel-resistance-to-demineralization-after-bracket-debonding-using-fluoride-varnish
#10
Ascensión Vicente, Antonio José Ortiz Ruiz, Miriam García López, Yolanda Martínez Beneyto, Luis-Alberto Bravo-González
The aim of this study was to evaluate the elemental content and morphology of enamel subjected to demineralization cycles after bracket debonding, adhesive remnant removal, and application of a fluoride varnish. 125 bovine teeth were divided into five groups (n = 25): 1) Intact enamel; 2) Intact enamel + demineralization cycles (DC); 3) Enamel after adhesive removal; 4)Enamel after adhesive removal + DC; 5) Enamel after adhesive removal + Profluorid + DC. The weight percentages of calcium (Ca), phosphorous (P) and fluoride (F) were calculated using energy dispersive X-ray spectroscopy (EDX)...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29117238/tdf-and-quantitative-ultrasound-bone-quality-in-african-patients-on-second-line-art-anrs-12169-2lady-sub-study
#11
Firmin Nongodo Kabore, Sabrina Eymard-Duvernay, Jacques Zoungrana, Stéphanie Badiou, Guillaume Bado, Arsène Héma, Assane Diouf, Eric Delaporte, Sinata Koulla-Shiro, Laura Ciaffi, Amandine Cournil
BACKGROUND: Bone demineralization, which leads to osteoporosis and increased fracture risk, is a common metabolic disorder in HIV-infected individuals. In this study, we aimed to assess the change in bone quality using quantitative ultrasound (QUS) over 96 weeks of follow-up after initiation of second-line treatment, and to identify factors associated with change in bone quality. METHODS AND FINDINGS: In a randomized trial (ANRS 12169), TDF and PI-naïve participants failing standard first-line treatment, from Burkina Faso, Cameroon, and Senegal were randomized to receive either TDF/FTC/LPVr, ABC/ddI/LPVr or TDF/FTC/DRVr...
2017: PloS One
https://www.readbyqxmd.com/read/29116298/in-situ-effect-of-titanium-tetrafluoride-varnish-on-enamel-demineralization
#12
Adílis Kalina Alexandria, Camila Nassur, Carolina Bezerra Cavalcanti Nóbrega, Ana Maria Gondim Valença, Pedro Luiz Rosalen, Lucianne Cople Maia
The effect of a 4% titanium tetrafluoride (TiF 4 ) varnish on enamel demineralization was evaluated. Twelve volunteers participated in this double-blind, randomized crossover study. Six enamel specimens were positioned in intraoral appliances throughout four treatment stages: 4% TiF 4 varnish (experimental varnish), 5% sodium fluoride (NaF) varnish (Duraphat ® ), placebo varnish, and negative control (deionized water). After 24 h, the varnishes were removed and plaques were allowed to accumulate. A 20% sucrose solution was dripped onto enamel blocks (10x/day)...
November 6, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/29113732/oxidative-stress-in-ageing-and-disease-development-studied-by-ft-ir-spectroscopy
#13
Jane Anastassopoulou, Maria Kyriakidou, Stylianos Kyriazis, Andreas F Mavrogenis, Vasiliki Mamareli, Ioannis Mamarelis, Marianna Petra, Efthymia Malesiou, Christoforos Kotoulas, Panagiota Kolovou, Emmanouil Koutoulakis, Athina Markouizou, Theophile Theophanides
FT-IR spectroscopy was used to investigate the effect of oxidative stress and to approach the mechanism on cancer bone demineralization, aortic valve mineralization and heterotopic ossification on disease development. The FT-IR spectra obtained from paediatric, adult bone and ex vivo irradiated adult healthy bone with a dose of 20Gy were compared with those of healthy bone. The increase of band intensity changes of vasCH2,vsCH2 in the region 3000-2850cm(-1) depended on aging, the disease progression and the dose of irradiation...
November 4, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/29112160/reclamation-of-marine-chitinous-materials-for-the-production-of-%C3%AE-glucosidase-inhibitors-via-microbial-conversion
#14
Van Bon Nguyen, San-Lang Wang
Six kinds of chitinous materials have been used as sole carbon/nitrogen (C/N) sources for producing α-glucosidase inhibitors (aGI) by Paenibacillus sp. TKU042. The aGI productivity was found to be highest in the culture supernatants using demineralized crab shell powder (deCSP) and demineralized shrimp shell powder (deSSP) as the C/N source. The half maximal inhibitory concentration (IC50) and maximum aGI activity of fermented deCSP (38 µg/mL, 98%), deSSP (108 µg/mL, 89%), squid pen powder (SPP) (422 µg/mL, 98%), and shrimp head powder (SHP) (455 µg/mL, 92%) were compared with those of fermented nutrient broth (FNB) (81 µg/mL, 93%) and acarbose (1095 µg/mL, 74%), a commercial antidiabetic drug...
November 7, 2017: Marine Drugs
https://www.readbyqxmd.com/read/29104598/effect-of-proanthocyanidin-fluoride-and-casein-phosphopeptide-amorphous-calcium-phosphate-remineralizing-agents-on-microhardness-of-demineralized-dentin
#15
Zahra Khamverdi, Matin Kordestani, Ali Reza Soltanian
Objectives: The aim of this study was to evaluate the effect of dentin remineralization using proanthocyanidin (PA), fluoride varnish and casein phosphopeptide amorphous calcium phosphate (CPP-ACP) paste and their various combinations on microhardness of demineralized root dentin. Materials and Methods: One-hundred and twenty freshly extracted sound human premolars were selected and randomly divided into eight groups for dentin treatment as follows. C: Deionized water (control); PA: 6...
March 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29104386/effect-of-casein-phosphopeptide-amorphous-calcium-phosphate-and-calcium-sodium-phosphosilicate-on-artificial-carious-lesions-an-in-vitro-study
#16
Iqra Chaudhary, Abhay M Tripathi, Gunjan Yadav, Sonali Saha
Aim: To compare new remineralizing agents calcium sodium phosphosilicate paste and casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) paste with that of fluoridated toothpaste in remineralization of early carious lesions using scanning electron microscopy and energy-dispersive X-ray (SEM-EDX) analysis. Materials and methods: Sixty sound extracted premolars were collected and placed in demineralizing solution for 4 days to produce artificial carious lesions...
July 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29104384/effect-of-resin-infiltration-on-artificial-caries-an-in-vitro-evaluation-of-resin-penetration-and-microhardness
#17
Deepesh Prajapati, Rashmi Nayak, Deepika Pai, Nagraj Upadhya, Vipin K Bhaskar, Pujan Kamath
Aim: To evaluate the effectiveness of resin infiltration on artificial caries lesion by assessing the depth of resin penetration and the change in microhardness of lesion postinfiltration. Materials and methods: Totally 45 human extracted premolars were used to create an artificial demineralized lesion in enamel using demineralizing solution. A total of 15 samples (group I) were infiltrated with resin. The depth of resin penetration was studied using scanning electron microscope (SEM)...
July 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29101853/electrochemical-carbamazepine-degradation-effect-of-the-generated-active-chlorine-transformation-pathways-and-toxicity
#18
Josué Daniel García-Espinoza, Petia Mijaylova-Nacheva, Martha Avilés-Flores
Carbamazepine (CBZ) is a biorecalcitrant pharmaceutical compound frequently detected in wastewater and water bodies which has numerous negative effects on living organisms. In this investigation the effect of electrocatalytically generated active chlorine on CBZ degradation was studied using Nb/BDD or Ti/IrO2 anodes. Subsequently, a response surface methodology based on a factorial plan and central composite design was carried out to determine the contribution of individual factors and to obtain the optimal experimental parameters for CBZ abatement...
October 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/29099364/nutrition-for-oral-health-and-oral-manifestations-of-poor-nutrition-and-unhealthy-habits
#19
Matthew Pflipsen, Yevgeniy Zenchenko
The availability of proper nutrients is critical for the growth, development, maintenance, and repair of healthy dentition and oral tissues. Deficiencies particularly relevant to the dental practice are those in folate and other B complex vitamins; vitamins A, C, and D; calcium; fluoride; and protein. A lack of these nutrients affects nearly every structure in the oral cavity, causing or contributing to scurvy, cleft palate, enamel hypoplasia, poor mineralization, caries, and other pathoses. Damage to the dentition can also be observed in individuals with unhealthy habits; for example, a diet high in sugars will promote processes such as demineralization and caries...
November 2017: General Dentistry
https://www.readbyqxmd.com/read/29097122/in-situ-effect-of-the-combination-of-fluoridated-toothpaste-and-fluoridated-gel-containing-sodium-trimetaphosphate-on-enamel-demineralization
#20
Sara Tiemi Felipe Akabane, Alberto Carlos Botazzo Delbem, Juliano Pelim Pessan, Luhana Santos Gonzales Garcia, Nayara Gonçalves Emerenciano, Diego Felipe Mardegan Gonçalves, Marcelle Danelon
OBJECTIVE: This in situ study evaluated the effect of the association of low-F (4,500μg F/g) gel containing TMP and FT (1,100μg F/g) on enamel demineralization. METHODS: This crossover and double-blind study consisted of five phases of seven days each. Volunteers (n=12) wore palatal appliances containing four enamel blocks. The cariogenic challenge was performed with 30% sucrose solution (six times/day). Treatments were: placebo toothpaste (PT, no fluoride/TMP); 1,100μg F/g toothpaste (FT); FT+4,500μg F/g+5%TMP gel (FT+TMP gel); FT+9,000μg F/g gel (FT+9,000 gel) and FT+12,300μg F/g (FT+Acid gel)...
October 30, 2017: Journal of Dentistry
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