نتایج جستجو برای: demineralization

تعداد نتایج: 1508  

2016
Wei Zhou Li-na Niu Lin Hu Kai Jiao Gang Chang Li-juan Shen Franklin R. Tay Ji-hua Chen

The present study examined the mechanism for caries resistance and the pulp responses in vital teeth following the use of the augmented-pressure adhesive displacement technique. Dentin adhesives were applied to the surface of sound dentin disks in 4 experimental groups: non-antibacterial adhesive and gentle adhesive displacement (N-G), non-antibacterial adhesive and augmented-pressure adhesive ...

Journal: :Brazilian dental journal 2013
Livia P Comar Beatriz M Souza Luiz Fernando Gracindo Marília A R Buzalaf Ana Carolina Magalhães

This in vitro study evaluated the preventive potential of experimental pastes containing 10% and 20% hydroxyapatite nanoparticles (Nano-HAP), with or without fluoride, on dental demineralization. Bovine enamel (n=15) and root dentin (n=15) specimens were divided into 9 groups according to their surface hardness: control (without treatment), 20 Nanop paste (20% HAP), 20 Nanop paste plus (20% HAP...

Journal: :Brazilian oral research 2011
Cynthia Soares de Azevedo Luciana Cardoso Espejo Trung Maria Regina Lorenzetti Simionato Anderson Zanardi de Freitas Adriana Bona Matos

The purpose of this study was to evaluate the degree of demineralization of artificially induced caries-affected human dentin by an in vitro microbiological method. The occlusal surfaces of 6 human molar teeth were abraded until a flat surface was obtained, and the enamel was removed to expose the occlusal dentin surface. These teeth were sectioned in 12 halves in the vestibular-lingual directi...

2017
Liangyue Pang Qinghui Zhi Peilin Zhuang Lixia Yu Ye Tao Huancai Lin

Genetic studies have shown that variations in enamel formation genes are associated with caries susceptibility. The aim of this study was to test in vitro whether variants in these genes are associated with dental enamel demineralization in a Streptococcus mutans biofilm model. DNA and enamel samples were obtained from 213 individuals. DNA was extracted from saliva, and 16 single nucleotide pol...

2013
Didem Nalbantgil Mehmet Oguz Oztoprak Derya Germec Cakan Kemal Bozkurt Tulin Arun

OBJECTIVE This in-vitro study was done to evaluate the effects of two different seal materials, Duraflor™ and Enamel Pro(®) Varnish, on enamel demineralization adjacent to orthodontic fixed appliances. METHODS Seventy-two extracted solid premolars were allocated to three groups as one control and two study groups after brackets were placed and bonded with Transbond™ XT. The control group rece...

Journal: :Caries research 2014
C M Moriyama J A Rodrigues A Lussi M B Diniz

This study aimed to evaluate the effectiveness of fluorescence-based methods (DIAGNOdent, LF; DIAGNOdent pen, LFpen, and VistaProof fluorescence camera, FC) in detecting demineralization and remineralization on smooth surfaces in situ. Ten volunteers wore acrylic palatal appliances, each containing 6 enamel blocks that were demineralized for 14 days by exposure to a 20% sucrose solution and 3 o...

2016
Elías Nahúm Salmerón-Valdés Edith Lara-Carrillo Carlo Eduardo Medina-Solís Norma Leticia Robles-Bermeo Rogelio José Scougall-Vilchis Juan Fernando Casanova-Rosado América Patricia Pontigo-Loyola Miguel Ángel Fernández Barrera

Dental demineralization was determined in patients at three time points during fixed orthodontic treatment. A multiple cross-sectional study included 108 patients divided into three different groups: (1) beginning of orthodontic treatment; (2) one year into treatment; and (3) two years into treatment. Demineralization was estimated using a DIAGNOdent pen. We obtained data from multiple tooth-by...

Journal: :Advanced Healthcare Materials 2023

Extrafibrillar Demineralization In article 2202611 by Cui Huang, Hongye Yang, and co-workers, the extrafibrillar demineralization concept is introduced into construction of tissue engineering scaffolds. The extrafibrillarly demineralized dentin facilitated mechanotransduction osteogenic differentiation stem cells, eventually brings about new ideas to develop hierarchical collagen-based biomater...

Journal: :journal of dental research, dental clinics, dental prospects 0
mehdi kashani assisstant professor of orthodontics sareh farhadi assisstant professor of oral & maxillofacial pathology neda rastegarfard student of dentistry

background and aims. this in vitro study was designed to compare enamel demineralization depths adjacent to bands cemented with zinc polycarboxylate, glass ionomer (gi) and resin-modified glass ionomer (rmgi), in order to achieve minimal enamel demineralization during orthodontic treatment. materials and methods. sixty fully developed extracted third molars were randomly divided into three test...

Journal: :journal of lasers in medical sciences 0
hooman sadr haghighi department of orthodontics, faculty of dentistry, tabriz university of medical science, tabriz, iran mahsa skandarinejad department of endodontics, faculty of dentistry, tabriz university of medical science, tabriz, iran amir ardalan abdollahi student’s research committee, faculty of dentistry, tabriz university of medical science, tabriz, iran

one common negative side effect of orthodontic treatment with fixed appliances is the development of incipient caries lesions around brackets, particularly in patients with poor oral hygiene. different methods have been used to prevent demineralization such as fluoride therapy and application of sealant to prevent caries. the recent effort to improve the resistance against the demineralization ...

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