نتایج جستجو برای: amorphous calcium phosphate

تعداد نتایج: 282860  

Journal: :journal of dentistry, tehran university of medical sciences 0
farzin heravi dental materials research center, professor of orthodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran. maryam omidkhoda oral & maxillofacial diseases research center, associate professor of orthodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran. niloufar koohestanian general dentist and research scholar, division of biomedical engineering, brigham and woman's hospital, harvard medical school, boston, usa. tabassom hooshmand associate professor, department of dental biomaterials, school of dentistry, tehran university of medical sciences, tehran, iran. hossein bagheri assistant professor of dental biomaterials, dental materials research center, department of operative dentistry, faculty of dentistry, mashhad university of medical sciences, mashhad, iran. negin ghaffari dental student, university of toronto, faculty of dentistry. toronto, canada.

objectives: the aim of this study was to evaluate and compare the retentive strength of orthodontic bands cemented with amorphous calcium phosphate (acp)-containing and conventional glass ionomer cements (gics). materials and methods: one-hundred-and-twenty mandibular third molars were embedded in acrylic resin blocks with the buccal surface of crowns perpendicular to the base of the mold. the ...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
اعظم ولیان azam valian dental school, shahid beheshti university of medical sciences, tehran-iran.دانشکده دندانپزشکی، دانشگاه علوم پزشکی شهید بهشتی. مریم معزی زاده maryam moezzizadeh dental school, shahid beheshti university of medical sciences, tehran-iran.دانشکده دندانپزشکی، دانشگاه علوم پزشکی شهید بهشتی. الهام مروج صالحی elham moravej salehi dental school, shahid beheshti university of medical sciences, tehran-iran.دانشکده دندانپزشکی، دانشگاه علوم پزشکی شهید بهشتی.

objective: amorphous calcium phosphate (acp) is a reactive solution capable of releasing calcium and phosphate ions, conversion to apatite and remineralization of mineral tooth structure. this study reviews acp structure, its properties and its applications in dentistry.   methods: in this review study, keywords including “amorphous calcium phosphate”, “mineralization”, “hydroxyapatite”, “casei...

Azam Valian, Elham Moravej Salehi, Maryam Moezzizadeh,

  Objective: Amorphous calcium phosphate (ACP) is a reactive solution capable of releasing calcium and phosphate ions, conversion to apatite and remineralization of mineral tooth structure. This study reviews ACP structure, its properties and its applications in dentistry.   Methods: In this review study, keywords including “amorphous calcium phosphate”, “mineralization”, “hydroxyapatite”, “cas...

Journal: :The Journal of clinical investigation 1991
S M Qiu G Wen N Hirakawa R D Soloway N K Hong R S Crowther

Calcium hydroxyapatite can be a significant component of black pigment gallstones. Diverse molecules that bind calcium phosphate inhibit hydroxyapatite precipitation. Because glycine-conjugated bile acids, but not their taurine counterparts, bind calcium phosphate, we studied whether glycochenodeoxycholic acid inhibits calcium hydroxyapatite formation. Glycochenodeoxycholic acid (2 mM) totally ...

Journal: :journal of dental research, dental clinics, dental prospects 0
mahmoud bahari faculty of dentistry, tabriz university of medical sciences siavash savadi oskoee soodabeh kimyai firoz pouralibaba marouf norouzi farrokh farhadi

background and aims. the aim was to evaluate the effect of casein phosphopeptide–amorphous calcium phosphate (cpp-acp) on microtensile bond strength (µtbs) to carious affected dentin (cad) using etch-and-rinse and self-etch adhesive systems. materials and methods. the occlusal surface of 32 human molars with moderate occlusal caries was removed. infected dentin was removed until reaching cad an...

Journal: :novelty in biomedicine 0
shila emamieh department of operative dentistry, school of dentistry, shahid beheshti university of medical sciences, tehran, iran hossein goudarzi department of microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, iran alireza akbarzadeh baghban department of basic sciences, school of rehabilitation, shahid beheshti university of medical sciences, tehran, iran yosra khaterizadeh department of operative dentistry, school of dentistry, shahid beheshti university of medical sciences, tehran, iran

background:dental caries is associated with oral pathogenes and streptococcus mutans (s. mutans)is one of the primary cariogenic organisms. the aim of this clinical study was to evaluate the effect of sugar free chewing gum containing casein phosphopeptide-amorphous calcium phosphate(cpp-acp) and xylitol on salivary streptococcus mutan.   m aterials and methods: 60 dental students, who voluntee...

Journal: :journal of dentistry, tehran university of medical sciences 0
ghazaleh ahmadi zenouz fariba ezoji seyede anese enderami soraya khafri

objectives: this study aimed to assess the effect of applying casein phosphopeptide–amorphous calcium phosphate (cpp-acp) paste, casein phosphopeptide–amorphous calcium phosphate fluoride (cpp-acpf) paste and sodium fluoride gel on surface microhardness of enamel after microabrasion. materials and methods: thirty freshly extracted human premolars were selected. all samples were subjected to har...

Journal: :The Journal of biological chemistry 2005
Keith J Cross N Laila Huq Joseph E Palamara John W Perich Eric C Reynolds

Milk caseins stabilize calcium and phosphate ions and make them available to the neonate. Tryptic digestion of the caseins yields phosphopeptides from their polar N-terminal regions that contain clusters of phosphorylated seryl residues. These phosphoseryl clusters have been hypothesized to be responsible for the interaction between the caseins and calcium phosphate that lead to the formation o...

2009

Casein phosphor-peptides-amorphous calcium phosphate (CPP-ACP) products have been widely used in the field of preventive dentistry. CPP exerts its main effect through binding and stabilizing calcium and phosphate ions (ACP) in an amorphous, non-crystalline state where they can enter enamel and enhance remineralization. The following article presents a background on these products, in addition t...

Journal: :Physical chemistry chemical physics : PCCP 2018
Michael W Swift Chris G Van de Walle Matthew P A Fisher

We investigate "Posner molecules", calcium phosphate clusters with chemical formula Ca9(PO4)6. Originally identified in hydroxyapatite, Posner molecules have also been observed as free-floating molecules in vitro. The formation and aggregation of Posner molecules have important implications for bone growth, and may also play a role in other biological processes such as the modulation of calcium...

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