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Remineralization

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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
#1
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/28713112/effect-of-casein-phosphopeptide-amorphous-calcium-phosphate-and-three-calcium-phosphate-on-enamel-microhardness
#2
En Hr Haghgou, Roza Haghgoo, Mohamad R Roholahi, Zahra Ghorbani
AIM: This study aims to investigate the effect of casein phos-phopeptide-amorphous calcium phosphate and three calcium phosphate (CPP-ACP and TCP) on increasing the microhardness of human enamel after induction of erosion. MATERIALS AND METHODS: A total of 26 healthy human-impacted third molar teeth were chosen, and their hardness measured using a microhardness testing machine. The samples were immersed in Coca Cola (pH = 4.7) for 8 minutes. Then, micro-hardness was measured again, and these samples were randomly divided into four groups (two control groups and two experimental groups)...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28701639/synthesized-mesoporous-silica-and-calcium-aluminate-cement-fillers-increased-the-fluoride-recharge-and-lactic-acid-neutralizing-ability-of-a-resin-based-pit-and-fissure-sealant
#3
Atikom Surintanasarn, Krisana Siralertmukul, Niyom Thamrongananskul
This study evaluated the effect of different types of filler in a resin-based pit and fissure sealant on fluoride release, recharge, and lactic acid neutralization. Resin-based sealant was incorporated with 5% w/w of the following fillers: calcium aluminate cement (CAC), synthesized mesoporous silica (SI), a CAC and SI mixture (CAC+SI), glass-ionomer powder (GIC), and acetic acid-treated GIC (GICA). Sealant without filler served as control. The samples were immersed in deionized water or a lactic acid solution and the concentration of fluoride in the water, before and after fluoride recharge, and the lactic acid pH change, respectively, were determined...
July 12, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28689366/micro-ct-and-fe-sem-enamel-analyses-of-calcium-based-agent-application-after-bleaching
#4
Mauricio Neves Gomes, Flávia Pires Rodrigues, Nick Silikas, Carlos Eduardo Francci
OBJECTIVES: The objective of the present study is to evaluate the effects of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) on bleached enamel. MATERIALS AND METHODS: A bleaching agent (35% hydrogen peroxide) was applied, 4 × 8 min on premolar teeth (n = 8). A CPP-ACP paste was applied for 7 days. Prior and post-treatment, microtomography images were obtained and 3D regions of interest (ROIs) were selected, from outer enamel, extending to 110...
July 8, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28689018/optimizing-concentration-of-titanium-tetrafluoride-solution-for-human-dentine-remineralization
#5
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/28681046/long-term-in-vivo-effect-of-various-restorative-materials-on-enamel-and-dentin-of-primary-molars
#6
Elyiahu Mass, Alla Hassan, Ornit Cohen, Uri Zilberman
OBJECTIVE: To explore the long-term in-vivo effect of different dental restorative materials on the surrounding enamel and dentin, in primary molars. METHOD AND MATERIALS: Sixteen naturally exfoliated primary molars restored with amalgam, compomer, and glass-ionomer cement were collected after 2 to 5 years of function in the mouth. Four intact molars served as control. The teeth were sliced buccolingually and the ion content in the restorative material, the enamel, and the dentin surrounding the restoration was determined using a scanning electron microscopy-energy dispersive x-ray spectroscopy (SEM-EDS) program...
July 4, 2017: Quintessence International
https://www.readbyqxmd.com/read/28659936/a-global-assessment-of-the-chemical-recalcitrance-of-seagrass-tissues-implications-for-long-term-carbon-sequestration
#7
Stacey M Trevathan-Tackett, Peter I Macreadie, Jonathan Sanderman, Jeff Baldock, Johanna M Howes, Peter J Ralph
Seagrass ecosystems have recently been identified for their role in climate change mitigation due to their globally-significant carbon sinks; yet, the capacity of seagrasses to sequester carbon has been shown to vary greatly among seagrass ecosystems. The recalcitrant nature of seagrass tissues, or the resistance to degradation back into carbon dioxide, is one aspect thought to influence sediment carbon stocks. In this study, a global survey investigated how the macromolecular chemistry of seagrass leaves, sheaths/stems, rhizomes and roots varied across 23 species from 16 countries...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28657808/chronologic-trends-in-studies-on-fluoride-mechanisms-of-action
#8
H J Oh, H W Oh, D W Lee, C H Kim, J Y Ahn, Y Kim, H B Shin, C Y Kim, S H Park, J G Jeon
Fluoride has been widely used for the prevention of dental caries since the mid-20th century. The aim of this study was to investigate the chronologic trends in studies on fluoride mechanisms of action against dental caries during the years 1950 to 2015. To this aim, queries such as "fluoride," "fluoride and demineralization," "fluoride and remineralization," "fluoride and (plaque or biofilms)," and "fluoride and (bacteria or microbials)" were submitted to PubMed to collect research article information, including titles, abstracts, publication dates, author affiliations, and publication journals...
June 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28657702/in-situ-study-to-confirm-the-anticaries-potential-of-a-sodium-monofluorophosphate-dentifrice-containing-calcium-sodium-phosphosilicate
#9
C R Parkinson, M Siddiqi, S Mason, F Lippert, A T Hara, D T Zero
OBJECTIVES: A randomized, investigator-blind, five-treatment, crossover, non-inferiority study was conducted to investigate the effect of the addition of calcium sodium phosphosilicate (CSPS), an agent known to relieve dentin hypersensitivity, to a sodium monofluorophosphate (SMFP)-containing dentifrice on the enamel remineralization potential of fluoride (F), as assessed by percentage surface microhardness recovery (%SMHR) and enamel fluoride uptake (EFU) using a standard in situ caries model...
June 2017: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/28656922/quantitative-evaluation-of-the-enamel-caries-which-were-treated-with-casein-phosphopeptide-amorphous-calcium-fluoride-phosphate
#10
O Yazicioglu, B C Yaman, A Güler, F Koray
OBJECTIVES: The aim of this in vivo study was to quantitatively evaluate the remineralization of the enamel caries on smooth and occlusal surfaces using DIAGNOdent, after daily application of casein phosphopeptide-amorphous calcium fluoride phosphate (CPP-ACFP). MATERIALS AND METHODS: Thirty volunteers, aged 18-30 years, with white spot lesions on the smooth and occlusal surfaces of the teeth were included in the study. These white spot lesions were visually examined and the degree of demineralization was quantitatively evaluated using DIAGNOdent...
June 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28653756/a-zinc-oxide-modified-hydroxyapatite-based-cement-facilitated-new-crystalline-stoichiometric-and-amorphous-apatite-precipitation-on-dentine
#11
M Toledano, M C Pérez-Álvarez, F S Aguilera, E Osorio, I Cabello, M Toledano-Osorio, R Osorio
AIM: To evaluate the remineralization ability of two endodontic sealer cements. METHODOLOGY: Mid-coronal dentine surfaces were subjected to: i) 37% phosphoric acid (PA) or ii) 0.5 M ethylenediaminetetraacetic acid (EDTA) conditioning prior to the application of two experimental hydroxyapatite-based cements, containing sodium hydroxide (calcypatite) or zinc oxide (oxipatite), respectively. Samples were stored in simulated body fluid for 24 h or 21 d. Remineralization of the dentine surfaces were studied by Raman spectroscopy (mapping with K-means cluster and hierarchical cluster analysis) was undertaken were done...
June 27, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28650787/the-effect-of-casein-phosphopeptide-amorf-calcium-phosphate-and-acidulated-phosphate-fluoride-gel-on-dental-erosion-in-primary-teeth-an-in-vitro-study
#12
Eda Arat Maden, Özge Acar, Ceyhan Altun, Günseli Güven Polat
OBJECTIVE: This study aimed to investigate the effect of acidulated phosphate fluoride (APF) gel and casein phosphopeptide/amorphous calciumphosphate (CPP-ACP) on the dental erosion produced by carbonated soft drink in primary teeth. STUDY DESIGN: This study evaluated by an in vitro model the effect of APF gel and CPP-ACP on the dental enamel previously subjected to erosive challenge with carbonated soft drink. Sixty sound human primary molars were prepared by embedding the crown sections in acrylic resin blocks leaving the enamel surfaces exposed...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28650444/nutrient-recycling-facilitates-long-term-stability-of-marine-microbial-phototroph-heterotroph-interactions
#13
Joseph A Christie-Oleza, Despoina Sousoni, Matthew Lloyd, Jean Armengaud, David J Scanlan
Biological interactions underpin the functioning of marine ecosystems, be it via competition, predation, mutualism or symbiosis processes. Microbial phototroph-heterotroph interactions propel the engine that results in the biogeochemical cycling of individual elements, and they are critical for understanding and modelling global ocean processes. Unfortunately, studies thus far have focused on exponentially growing cultures in nutrient-rich media, meaning knowledge of such interactions under in situ conditions is rudimentary at best...
June 26, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/28648051/community-biological-ammonium-demand-a-conceptual-model-for-cyanobacteria-blooms-in-eutrophic-lakes
#14
Wayne S Gardner, Silvia E Newell, Mark J McCarthy, Daniel K Hoffman, Kaijun Lu, Peter J Lavrentyev, Ferdi L Hellweger, Steven W Wilhelm, Zhanfei Liu, Denise A Bruesewitz, Hans W Paerl
Cyanobacterial harmful algal blooms (CyanoHABs) are enhanced by anthropogenic pressures, including excessive nutrient (nitrogen, N, and phosphorus, P) inputs and a warming climate. Severe eutrophication in aquatic systems is often manifested as non-N2-fixing CyanoHABs (e.g., Microcystis spp.), but the biogeochemical relationship between N inputs/dynamics and CyanoHABs needs definition. Community biological ammonium (NH4(+)) demand (CBAD) relates N dynamics to total microbial productivity and NH4(+) deprivation in aquatic systems...
July 7, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28647649/recovery-after-pilp-remineralization-of-dentin-lesions-created-with-two-cariogenic-acids
#15
K Saeki, Y-C Chien, G Nonomura, A F Chin, S Habelitz, L B Gower, S J Marshall, G W Marshall
OBJECTIVES: Acetate and lactate are important cariogenic acids produced by oral bacteria. They produced different residual dentin structures in artificial lesions of similar depth. We evaluated if such lesions responded in the same way to a polymer-induced-liquid-precursor (PILP) remineralization. DESIGN: Dentin blocks obtained from human third molars, divided into 6 groups (n=3). Blocks were demineralized with acetate (66h) or lactate (168h) buffer at pH 5.0 to create 140μm target lesion depths...
June 15, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28646796/organic-matter-drives-high-interannual-variability-in-methylmercury-concentrations-in-a-subarctic-coastal-sea
#16
A L Soerensen, A T Schartup, A Skrobonja, E Björn
Levels of neurotoxic methylmercury (MeHg) in phytoplankton are strongly associated with water MeHg concentrations. Because uptake by phytoplankton is the first and largest step of bioaccumulation in aquatic food webs many studies have investigated factors driving seasonal changes in water MeHg concentrations. Organic matter (OM) is widely accepted as an important driver of MeHg production and uptake by phytoplankton but is also known for strong interannual variability in concentration and composition within systems...
June 21, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28643906/in-vitro-evaluation-of-surface-properties-of-pro-seal-%C3%A2-and-opal-%C3%A2-seal-tm-in-preventing-white-spot-lesions
#17
T S Premaraj, N Rohani, D Covey, S Premaraj
OBJECTIVES: To evaluate the surface properties of two commercially available sealants (Pro Seal(®) (PS) and Opal(®) Seal(TM) (OS)) in terms of fluoride(F) release, biofilm formation of Streptococcus mutans and Lactobacillus and the ability to resist acid penetration. SETTING: University of Nebraska Medical Center. MATERIAL & METHODS: Discs of similar diameter and thickness were made from OS and PS. Discs were soaked in double-distilled water, and F released was measured with fluoride meter daily for 14 consecutive days, then at 21 and 28 days...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28642924/influence-of-niobium-pentoxide-addition-on-the-properties-of-glass-ionomer-cements
#18
Isadora Martini Garcia, Vicente Castelo Branco Leitune, Gabriela De Souza Balbinot, Susana Maria Werner Samuel, Fabrício Mezzomo Collares
Objective: To determine the influence of niobium pentoxide (Nb2O5) addition on the physical and chemical properties of glass ionomer cements (GICs). Materials and methods: Five, 10 or 20 wt.% of Nb2O5 were incorporated into commercial GICs (Maxxion R, Vitro Molar, Vitro Fil R) and one group of each GIC remained without Nb2O5 (control groups). The GICs were evaluated by Knoop hardness, compressive strength, acid erosion, particle size and radiopacity. Data were analyzed by two-way ANOVA followed by Tukey's test...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642915/pre-treating-dentin-with-chlorhexadine-and-cpp-acp-self-etching-and-universal-adhesive-systems
#19
Ricardo Alves Dos Santos, Eliane Alves de Lima, Marcos Antônio Japiassu Resende Montes, Rodivan Braz
Objective: The aim of the present study was to compare the effect of pre-treating dentin with chlorhexidine, at concentrations of 0.2% and 2%, and remineralizing paste containing CPP-ACP (MI Paste - GC) on the bond strength of adhesive systems. Material and methods: In total, 80 slides of dentin were used. These slides were 2 mm thick and were obtained from bovine incisors. Standard cavities were created using diamond bur number 3131. In the control groups, a Scotchbond Universal Adhesive (SUA) self-etching adhesive system of 3M ESPE and a Clearfil SE Bond (CSE) adhesive system of Kuraray were applied, following the manufacturer's instructions...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642057/novel-multifunctional-dental-cement-to-prevent-enamel-demineralization-near-orthodontic-brackets
#20
Yansong Ma, Ning Zhang, Michael D Weir, Yuxing Bai, Hockin H K Xu
OBJECTIVES: White spot lesions due to biofilm acid-induced enamel demineralization are prevalent in orthodontic treatments. The aim of this study was to develop a novel bioactive multifunctional cement with protein-repellent, antibacterial and remineralizing capabilities, and investigate the effects on enamel hardness and lesion depth in vitro for the first time. MATERIALS AND METHODS: 2-Methacryloyloxyethyl phosphorylcholine (MPC), dimethylaminohexadecyl methacrylate (DMAHDM), and nanoparticles of amorphous calcium phosphate (NACP) were incorporated into a resin-modified glass ionomer (RMGI)...
June 19, 2017: Journal of Dentistry
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