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Remineralization

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https://www.readbyqxmd.com/read/28090810/enamel-remineralization-effect-of-a-dentifrice-containing-calcium-sodium-phosphosilicate-an-optical-coherence-tomography-observation
#1
Saki Matsuyoshi, Ryosuke Murayama, Shunsuke Akiba, Chiaki Yabuki, Toshiki Takamizawa, Hiroyasu Kurokawa, Masashi Miyazaki
OBJECTIVE: The purpose of this study was to examine the effects of a dentifrice containing 5% calcium sodium phosphosilicate (CSP) on the remineralization of the enamel using optical coherence tomography (OCT). MATERIALS AND METHODS: Bovine incisors were sliced and shaped in a rectangular form. One group of five specimens was treated with undersaturated 0.1 M lactic acid buffer solution (pH 4.75) for 10 min and then placed in artificial saliva (pH 7.0) (De group)...
January 16, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28079165/oriented-and-ordered-biomimetic-remineralization-of-the-surface-of-demineralized-dental-enamel-using-hap-acp-nanoparticles-guided-by-glycine
#2
Haorong Wang, Zuohui Xiao, Jie Yang, Danyang Lu, Anil Kishen, Yanqiu Li, Zhen Chen, Kehua Que, Qian Zhang, Xuliang Deng, Xiaoping Yang, Qing Cai, Ning Chen, Changhong Cong, Binbin Guan, Ting Li, Xu Zhang
Achieving oriented and ordered remineralization on the surface of demineralized dental enamel, thereby restoring the satisfactory mechanical properties approaching those of sound enamel, is still a challenge for dentists. To mimic the natural biomineralization approach for enamel remineralization, the biological process of enamel development proteins, such as amelogenin, was simulated in this study. In this work, carboxymethyl chitosan (CMC) conjugated with alendronate (ALN) was applied to stabilize amorphous calcium phosphate (ACP) to form CMC/ACP nanoparticles...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28054408/non-native-fish-stocking-alters-stream-ecosystem-nutrient-dynamics
#3
Alexander V Alexiades, Alexander S Flecker, Clifford E Kraft
Each year, millions of hatchery raised fish are stocked annually into streams and rivers worldwide, yet the effects of hatchery raised fish on stream nutrient cycles has seldom been examined. We quantified the influence of supplemental non-native fish stocking, a widespread recreational fishery management practice, on in-stream nutrient storage and cycling. We predicted that supplemental, hatchery-raised brown trout (Salmo trutta) stocking would result in increased N and P supply relative to in-stream biotic demand for those nutrients and that stocked fishes would remineralize and store a significantly greater amount of N and P than the native fish community, due to higher areal biomass...
January 5, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28052551/remineralization-of-natural-early-caries-lesions-in-vitro-by-p11-4-monitored-with-photothermal-radiometry-and-luminescence
#4
Joshua D Silvertown, Bonny P Y Wong, Koneswaran S Sivagurunathan, Stephen H Abrams, Jennifer Kirkham, Bennett T Amaechi
AIM: The efficacy of self-assembling peptide P11 -4 to regenerate enamel in natural early caries lesions was evaluated over 50 days by photothermal radiometry and luminescence using The Canary System (CS) and The Canary Lab (CL). METHODS: Baseline readings for sound and carious sites on smooth surfaces of extracted teeth were obtained by scanning with CS and CL. Teeth were then randomly assigned to a treatment group (TG, treated with P11 -4), a placebo group (PG, same vehicle as treatment group without P11 -4), or a control group (CG, no treatment)...
January 4, 2017: Journal of Investigative and Clinical Dentistry
https://www.readbyqxmd.com/read/28052216/pattern-of-hydroxyapatite-crystal-growth-on-bleached-enamel-following-the-application-of-two-antioxidants-an-atomic-force-microscope-study
#5
Chitra P Bhusari, Divya S Sharma
OBJECTIVES: This study observed the topographical pattern of hydroxyapatite deposition and growth (D&G) on bleached enamel following application of two antioxidants (sodium ascorbate and catalase) using atomic force microscope. STUDY DESIGN: Twenty enamel specimens (4×3×2mm), prepared from extracted impacted third molars, were mounted in self-cure acrylic and randomly grouped as: Group I-untreated; Group II- 35%H2O2; Group III- 35%H2O2 + artificial saliva; Group IV- 35%H2O2 + catalase+ artificial saliva; Group V- 35%H2O2 + sodium ascorbate+ artificial saliva...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28052214/effect-of-silver-nanoparticle-added-pit-and-fissure-sealant-in-the-prevention-of-dental-caries-in-children
#6
Enid Karina Salas-López, Mauricio Pierdant-Pérez, Juan Francisco Hernández-Sierra, Facundo Ruíz, Peter Mandeville, Amaury J Pozos-Guillén
OBJECTIVE: The objective of this study was to evaluate the effects of pit and fissure sealant mixed with silver nanoparticles on dental caries, by means of monthly measurement of fluorescence with DIAGNOdent over six months. STUDY DESIGN: This study was divided in two phases: experimental and clinical. In the experimental phase, the adhesion and microleakage of the pit and fissure sealant experiment were evaluated. Two groups of 10 teeth, without serious carious lesions, were included...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28050976/multifaceted-role-of-calcium-in-cancer
#7
Gargi S Sarode, Sachin C Sarode, Shankargouda Patil
Role of calcium in bone remodeling and tooth remineral-ization is well known. However, calcium also plays a very imperative role in many biochemical reactions, which are essential for normal functioning of cells. The calcium associated tissue homeostasis encompasses activities like proliferation, cell death, cell motility, oxygen, and nutrient supply.
January 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28032049/the-efficiency-of-child-formula-dentifrices-containing-different-calcium-and-phosphate-compounds-on-artificial-enamel-caries
#8
Praphasri Rirattanapong, Kadkao Vongsavan, Chavengkiat Saengsirinavin, Ploychompoo Khumsub
OBJECTIVES: Fluoride toothpaste has been extensively used to prevent dental caries. However, the risk of fluorosis is concerning, especially in young children. Calcium phosphate has been an effective remineralizing agent and is present in commercial dental products, with no risk of fluorosis to users. This in vitro study aimed to compare the effects of different calcium phosphate compounds and fluoride-containing dentifrices on artificial caries in primary teeth. MATERIALS AND METHODS: Fifty sound primary incisors were coated with nail varnish, leaving two 1 mm(2) windows on the labial surface before immersion in demineralizing solution for 96 hours to produce artificial enamel lesions...
November 2016: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28024772/effects-of-casein-phosphopeptide-amorphous-calcium-phosphate-application-after-interproximal-stripping-on-enamel-surface-an-in-vivo-study
#9
Mehmet Bayram, Adem Kusgoz, Cemal Yesilyurt, Metin Nur
INTRODUCTION: The aim of this study was to investigate the effects of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) application after interproximal stripping on enamel surface structures in vivo. METHODS: Fifteen patients with a mean age of 15.8 years participated in this study. For each patient, the extraction of 4 first premolars was part of the orthodontic treatment plan. The patients were randomly divided into 5 groups of 3 patients. With the exception of group 1, the mesial and distal surfaces of all first premolars were stripped with a stripping disc (Komet; Gebr Brasseler, Lemgo, Germany) under air cooling and then polished with Sof-Lex polishing discs (3M Dental Products, St Paul, Minn)...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28024641/poly-amido-amine-and-nano-calcium-phosphate-bonding-agent-to-remineralize-tooth-dentin-in-cyclic-artificial-saliva-lactic-acid
#10
Kunneng Liang, Michael D Weir, Mark A Reynolds, Xuedong Zhou, Jiyao Li, Hockin H K Xu
The objectives of this study were to develop a novel method to remineralize dentin lesions, and investigate the remineralization effects of poly (amido amine) (PAMAM) dendrimer plus a bonding agent with nanoparticles of amorphous calcium phosphate (NACP) in a cyclic artificial saliva/lactic acid environment for the first time. Dentin lesions were produced via phosphoric acid. Four groups were tested: (1) dentin control, (2) dentin with PAMAM, (3) dentin with NACP bonding agent, and (4) dentin with PAMAM plus NACP bonding agent...
March 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28013537/methylmercury-mass-budgets-and-distribution-characteristics-in-the-western-pacific-ocean
#11
Hyunji Kim, Anne L Soerensen, Jin Hur, Lars-Eric Heimburger, Doshik Hahm, Tae Siek Rhee, Seam Noh, Seunghee Han
Methylmercury (MeHg) accumulation in marine organisms poses serious ecosystem and human health risk, yet the sources of MeHg in the surface and subsurface ocean remain uncertain. Here, we report the first MeHg mass budget for the Western Pacific Ocean estimated based on cruise observations. We found the major net source of MeHg in surface water to be vertical diffusion from the subsurface layer (1.8 to 12 nmol m-2 yr-1). A higher upward diffusion in the North Pacific (12 nmol m-2 yr-1) than in the Equatorial Pacific (1...
December 26, 2016: Environmental Science & Technology
https://www.readbyqxmd.com/read/28003493/what-drives-osteoarthritis-synovial-versus-subchondral-bone-pathology
#12
REVIEW
Thomas Hügle, Jeroen Geurts
Subchondral bone and the synovium play an important role in the initiation and progression of OA. MRI often permits an early detection of synovial hypertrophy and bone marrow lesions, both of which can precede cartilage damage. Newer imaging modalities including CT osteoabsorptiometry and hybrid SPECT-CT have underlined the importance of bone in OA pathogenesis. The subchondral bone in OA undergoes an uncoupled remodelling process, which is notably characterized by macrophage infiltration and osteoclast formation...
December 21, 2016: Rheumatology
https://www.readbyqxmd.com/read/27996182/intrafibrillar-mineralization-of-polyacrylic-acid-bound-collagen-fibrils-using-a-two-dimensional-collagen-model-and-portland-cement-based-resins
#13
Shiyu Wu, Lisha Gu, Zihua Huang, Qiurong Sun, Huimin Chen, Junqi Ling, Sui Mai
The biomimetic remineralization of apatite-depleted dentin is a potential method for enhancing the durability of resin-dentin bonding. To advance this strategy from its initial proof-of-concept design, we sought to investigate the characteristics of polyacrylic acid (PAA) adsorption to desorption from type I collagen and to test the mineralization ability of PAA-bound collagen. Portland cement and β-tricalcium phosphate (β-TCP) were homogenized with a hydrophilic resin blend to produce experimental resins...
December 20, 2016: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/27994581/disturbance-increases-microbial-community-diversity-and-production-in-marine-sediments
#14
Pierre E Galand, Sabrina Lucas, Sonja K Fagervold, Erwan Peru, Audrey M Pruski, Gilles Vétion, Christine Dupuy, Katell Guizien
Disturbance strongly impacts patterns of community diversity, yet the shape of the diversity-disturbance relationship remains a matter of debate. The topic has been of interest in theoretical ecology for decades as it has practical implications for the understanding of ecosystem services in nature. One of these processes is the remineralization of organic matter by microorganisms in coastal marine sediments, which are periodically impacted by disturbances across the sediment-water interface. Here we set up an experiment to test the hypothesis that disturbance impacts microbial diversity and function during the anaerobic degradation of organic matter in coastal sediments...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27994309/effect-of-carbodiimide-on-the-structural-stability-of-resin-dentin-interface
#15
REVIEW
Payal Singh, Rajni Nagpal, Udai Pratap Singh, Naveen Manuja
Clinical longevity of composite resin restorations is a significant problem in adhesive dentistry. Most of the current simplified adhesives present good immediate bonding, but the bond strength gradually falls over a period due to biodegradation at the resin-dentin interface. Various strategies have been proposed to improve the durability of resin-dentin bond including the use of matrix metalloproteinases inhibitors and collagen cross-linkers, biomimetic remineralization, ethanol wet bonding, to improve the physical and mechanical properties of the bonding substrate, i...
November 2016: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/27978920/-research-advances-in-dentin-biomimetic-remineralization
#16
T D Wang, L Wang, H L Feng
With similar characteristic as nature dentin in structure and function, regenerated dentin is considered to be the ideal material for detected dentin restoration. Accordingly, dentin regeneration is a key issue in oral medicine and biomaterial science. Biomimetic mineralizatioin and remineralization are thus considered as strategies in dentin regeneration. This review is about the research advances of dentin biomimetic remineralization.
December 9, 2016: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/27966511/comparative-evaluation-of-application-of-different-fluoride-varnishes-on-artificial-early-enamel-lesion-an-in-vitro-study
#17
Udita Majithia, Karthik Venkataraghavan, Prashant Choudhary, Krishna Trivedi, Shalin Shah, Mira Virda
INTRODUCTION: In an attempt to manage noncavitated carious lesions noninvasively through remineralization, a range of novel fluoride varnishes with additional remineralizing agents have been made available for clinical application. AIM AND OBJECTIVES: The aim of this study was to compare and evaluate the remineralization potential of three commercially available varnishes on artificial enamel lesions. MATERIALS AND METHODS: This in vitro study involves eighty intact enamel specimens prepared from premolars extracted for orthodontic purposes...
September 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/27965170/atomic-scale-modeling-of-iron-doped-biphasic-calcium-phosphate-bioceramics
#18
Sandrine Gomes, Amandeep Kaur, Jean-Marc Grenèche, Jean-Marie Nedelec, Guillaume Renaudin
: Biphasic calcium phosphates (BCPs) are bioceramics composed of hydroxyapatite (HAp, Ca10(PO4)6(OH)2) and beta-Tricalcium Phosphate (β-TCP, Ca3(PO4)2). Because their chemical and mineral composition closely resembles that of the mineral component of bone, they are potentially interesting candidates for bone repair surgery, and doping can advantageously be used to improve their biological behavior. However, it is important to describe the doping mechanism of BCP thoroughly in order to be able to master its synthesis and then to fully appraise the benefit of the doping process...
December 10, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27960182/calcium-phosphate-osteopontin-particles-reduce-biofilm-formation-and-ph-drops-in-in-situ-grown-dental-biofilms
#19
Sebastian Schlafer, Casper J S Ibsen, Henrik Birkedal, Bente Nyvad
This 2-period crossover study investigated the effect of calcium-phosphate-osteopontin particles on biofilm formation and pH in 48-h biofilms grown in situ. Bovine milk osteopontin is a highly phosphorylated glycoprotein that has been shown to interfere with bacterial adhesion to salivary-coated surfaces. Calcium-phosphate-osteopontin particles have been shown to reduce biofilm formation and pH drops in a 5-species laboratory model of dental biofilm without affecting bacterial viability. Here, smooth surface biofilms from 10 individuals were treated ex vivo 6 times/day for 30 min with either calcium-phosphate-osteopontin particles or sterile saline...
December 14, 2016: Caries Research
https://www.readbyqxmd.com/read/27957274/effect-of-toothpastes-containing-different-naf-concentrations-or-a-snf2-naf-combination-on-root-dentine-erosive-lesions-in-vitro
#20
Iliana Diamanti, Haroula Koletsi-Kounari, Eleni Mamai-Homata
BACKGROUND: Fluoride toothpastes presumably offer some protection against acid erosion. However, uncertainty exists towards fluoride's efficacy relatively to the concentration and the type of chemical compound used. This in vitro study evaluated the relative efficacy of toothpastes containing sodium fluoride in different concentrations or a stabilized stannous fluoride/sodium fluoride system on root dentine erosion. MATERIAL AND METHODS: Bovine dentin specimens were allocated into four groups (n=10): control (no F), 1450ppm F (as NaF), 5000ppm F (as NaF) and 1450ppm F (1100ppm as stabilized SnF2 and 350ppm as NaF)/sodium hexamethaphosphate...
December 2016: Journal of Clinical and Experimental Dentistry
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