Abstract:
:The aim was to characterize by atomic force microscopy (AFM) the nanostructure of human dentin surfaces affected by dental fluorosis (DF) before and after phosphoric acid etching. This study included 240 human dentin samples classified according to the severity of DF, which were divided into four groups using the Thylstrup-Fejerskov Index (TFI). Samples were analyzed by AFM before and after acid etching for 15, 30, and 60 s. The roughness (R(a)) for healthy dentin, and dentin with mild, moderate, and severe fluorosis were 440 nm, 442 nm, 445 nm, and 449 nm, respectively. After 15, 30, and 60 s of acid etching, all healthy and fluorotic dentin samples increased in roughness (p<0.05). The diameter of dentinal tubule orifices (D(t)) in healthy human dentin increased after acid etching for 60 s. We conclude that effective etching times are 15 s for healthy and mild dentin fluorosis, 30-s for moderately fluorosed dentin, and 45-60 s for severe fluorotic dentin.
journal_name
Dent Mater Jjournal_title
Dental materials journalauthors
Zavala-Alonso V,Aguilera-Flores R,Patiño-Marin N,Martinez-Castañon GA,Anusavice KJ,Loyola-Rodriguez JPdoi
10.4012/dmj.2011-023subject
Has Abstractpub_date
2011-01-01 00:00:00pages
546-53issue
4eissn
0287-4547issn
1881-1361pii
JST.JSTAGE/dmj/2011-023journal_volume
30pub_type
杂志文章abstract::This study determined the discoloration of five CAD/CAM resins, four manually polymerized resins, and glass-ceramic as control group. Specimens were divided into three groups (N=300, n=30) to be stored in coffee, black tea and red wine (n=10). The discoloration was measured using a spectrophotometer after 1, 7, 29, 90...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2011-238
更新日期:2012-01-01 00:00:00
abstract::The purpose of this study was to evaluate, in vitro, the antimicrobial effect of iRoot BP, iRoot BP Plus, and mineral trioxide aggregate (MTA) against Entercoccus faecalis and Candida albicans by using direct contact test. The materials were tested immediately after application to the microtiter wells and after settin...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2013-250
更新日期:2014-01-01 00:00:00
abstract::We investigated the adsorption of lipoteichoic acid (LTA) on titanium surfaces by using the quartz crystal microbalance (QCM) method, and confirmed the influence of mucin (MUC) pre-adsorption on LTA adsorption. Two injection methods were evaluated. Namely, Method A: single-step injection of LTA solution to the Ti sens...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2019-209
更新日期:2020-12-03 00:00:00
abstract::Supercritical water was used as a modification method of electrochemically deposited apatite on pure titanium. The apatites were coated on a commercially pure titanium plate using a hydrothermal-electrochemical method. A constant direct current at 12.5 mA/cm2 was loaded for 1 hr at 25, 60, 100, 150 and 200 degrees C i...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.20.247
更新日期:2001-12-01 00:00:00
abstract::The purpose of this study was to clarify the effect of silver nanoparticles on the behavior of subcritical crack growth (SCG) in dental porcelains. Prior to occurrence of fast fracture in dental porcelains, SCG occurs and leads to strength degradation over time. SCG in dental porcelains can be characterized by the str...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2012-266
更新日期:2013-01-01 00:00:00
abstract::Application of a light-cured porcelain margin is a technique which has been developed recently. In this study, we compared the porcelain margin properties of the porcelain-light-cured resin matrix system and the traditional porcelain-water system, in terms of volumetric shrinkage, density, compressive strength, surfac...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.14.1
更新日期:1995-06-01 00:00:00
abstract::This study evaluated the effect of adding silane coupling agent on initial and long-term bond strengths of one-step self-etch adhesives to enamel-dentin-composite in combined situation. Cervical cavities were prepared on extracted molars and filled with Clearfil AP-X. After water-storage for one-week, the filled teeth...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2015-050
更新日期:2015-01-01 00:00:00
abstract::Enamel and dentin particles were added to an experimental 10-methacryloyloxydecyl dihydrogen phosphate (MDP)-based one-step adhesive to react for 30 s. After enamel and dentin reactants were analyzed using X-ray diffraction (XRD) and phosphorus-31 nuclear magnetic resonance ((31)P NMR) techniques, curve-fitting analys...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2014-260
更新日期:2015-01-01 00:00:00
abstract::The aim of this study was to evaluate the cytotoxicity of contemporary flowable and paste-like bulk-fill dental composites by using a real-time cell analysis. In the present paper, cytotoxicity levels of five flowable, five paste-like bulk-fill composite materials and one conventional flowable, one conventional paste-...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2018-336
更新日期:2020-01-31 00:00:00
abstract::The objective of this study is to develop a casting investment that prevents the blackening of the cast surface of noble metal alloys. The experimental investments were prepared using a gypsum-bonded investment in which the metallic powders such as boron (B), silicon (Si), aluminum (Al) and titanium (Ti) were added as...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.22.87
更新日期:2003-03-01 00:00:00
abstract::The purpose of this review is to summarise recent advances in the design and composition of bioactive surface layers of implantabile biomaterials, and thus the genetic potential of osteoprogenitor cells to recognize and respond to these diverse implanted biomaterials. Changes applied to a biomaterial's surface, in gen...
journal_title:Dental materials journal
pub_type: 杂志文章,评审
doi:10.4012/dmj.19.99
更新日期:2000-06-01 00:00:00
abstract::This study investigated transformations of nickel-titanium wires using differential scanning calorimetry (DSC) and thermomechanical analysis (TMA) under tensile load (100 gf or 500 gf). Two nickel-titanium wires, 35°C Copper Ni-Ti and Nitinol SE, were selected. DSC analyses were performed between -90° and 100°C. Speci...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2010-196
更新日期:2011-01-01 00:00:00
abstract::This study aimed to investigate the relationship between the radiopacity of an experimental light-cured composite resin and the amount and type of its radiopaque material: Ti, SrCO3, ZrO2, BaSO4, or Bi2O3. Radiopacity of each material was evaluated in terms of aluminum equivalent thickness using an aluminum step wedge...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.24.315
更新日期:2005-09-01 00:00:00
abstract::This study was evaluating how three desensitizing toothpastes used at home influence the effect associated with desensitizing agents after application in the clinic. Fifty dentine disks measure it permeability and 32 dentine disks with similar permeability levels were selected. Following Dental desensitizer treatment,...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2019-164
更新日期:2020-09-29 00:00:00
abstract::This research was conducted to investigate the bond strength between artificial teeth and a thermoplastic denture base resin for injection molding with different surface preparations for use in flexible resin removable partial dentures. Composite resin denture teeth and acrylic denture resin teeth were bonded to three...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2020-183
更新日期:2021-01-15 00:00:00
abstract::The purpose of this study was to evaluate the effects of dentin attrition, phosphoric acid etching, and cyclic loading on the microtensile bond strength (microTBS) of a self-etching adhesive system to dentin. Flat dentin surfaces of human molars were assigned to eight experimental groups based on those with or without...
journal_title:Dental materials journal
pub_type: 杂志文章,随机对照试验
doi:10.4012/dmj.28.197
更新日期:2009-03-01 00:00:00
abstract::The objective of this work was to analyze the antimicrobial and antibiofilm activities of bismuth lipophilic nanoparticles (BisBAL NPs) incorporated into chitosan-based membranes. Chitosan-based membranes were homogeneously embedded with BisBAL NPs, confirming the bismuth presence by scanning electron microscopy. The ...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2018-173
更新日期:2019-07-31 00:00:00
abstract::The blending effect (BE) plays an important role in esthetics of the composite resin. The objective of this study was to determine the extents to which filler size and content affect the BE. Three types of fillers (0.7, 1.0, and 1.5 µm) were mixed at weight contents of 60, 70, 75, and 80%. This study simulated clinica...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2016-083
更新日期:2017-01-31 00:00:00
abstract::This study was carried out to investigate the influences of elastic moduli of the dowel-core combination on the stress distribution in the root by the use of 2-dimensional finite element analysis. The peak stress at the dowel-cement interface was influenced strongly by a change of elastic modulus of the post (from 20,...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.19.50
更新日期:2000-03-01 00:00:00
abstract::This study examined the ability of a photocatalyst mixed in a denture base resin to decompose organic substances which adhered to the denture base resin surface. The photocatalyst was mixed with denture base resin at concentrations of 0, 5, 10, and 15% (w/w). Decomposition test, bending test, and surface roughness mea...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.27.179
更新日期:2008-03-01 00:00:00
abstract::The bactericidal efficacy of 1.00-4.50% glycine-type amphoteric surfactant (Gly) was evaluated by measuring its microorganism removal rate in denture plaque. Physical and mechanical properties such as surface roughness, color difference, and bending strength of two different denture base resins were determined before ...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.28.307
更新日期:2009-05-01 00:00:00
abstract::The biaxial flexural strength and cyclic fatigue biaxial flexural strength of CAD/CAM ceramics polished with #220, 400, 600 and 1000 diamond pads were measured in an effort to determine the effect of surface roughness on fatigue behavior of dental ceramics. The surface roughness was improved after polishing with a sma...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.18.395
更新日期:1999-12-01 00:00:00
abstract::The hardened alpha-case (alpha-case) layer inevitably forms on the surface of titanium castings when prepared by investment casting. Because the hardness of the alpha-case is incomparable to that of the interior structure, the perception exists that the alpha-case is difficult to remove during cutting, grinding and po...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.28.587
更新日期:2009-09-01 00:00:00
abstract::The aim of the present work was to investigate the effect of the different organically modified nanoclays on clinically significant properties of new synthesized dental pit and fissure nanocomposite sealants. Their morphological characteristics were examined by means of X-ray diffraction (XRD) analysis and scanning el...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2019-214
更新日期:2020-09-29 00:00:00
abstract::The purpose of this study was to analyze the ultrastructures and chemical compositions of precipitates formed on mineral trioxide aggregate (MTA; White ProRoot MTA) immersed in distilled water (DW) or phosphate buffered saline (PBS), based on the attribution that MTA's bioactivity and sealing ability are influenced by...
journal_title:Dental materials journal
pub_type: 杂志文章,随机对照试验
doi:10.4012/dmj.2009-133
更新日期:2010-10-01 00:00:00
abstract::This study tested whether exhaled humid conditions would affect the adhesion of etch-and-rinse, two-step and one-step self-etch adhesive resins to enamel. Enamel surfaces of human maxillary anterior teeth (N=240, n=20) were exposed to four humid conditions (H1: 63-68%, H2: 73-78%, H3: 93-98%, H4: 36-45% RH) during bon...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2012-200
更新日期:2013-01-01 00:00:00
abstract::Present study evaluated effects of addition of Nanoparticles fluorapatite (Nano-FA) on microhardness and fluoride release of a Glass Ionomer Cement (GIC, Fuji IX GP Fast). Forty-eight specimens prepared, divided equally into 4 groups (2 with Nano-FA); after 24 h and one week Vickers microhardness (HV) was measured. Na...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2015-437
更新日期:2016-01-01 00:00:00
abstract::To improve the bioactivity of titanium surfaces, glow discharge was used to facilitate collagen grafting on titanium disks. Titanium test specimens were pre-treated by glow discharge fed with a mixture of argon and allylamine (AA) gases. Treated titanium disks were then grafted with type I collagen using glutaraldehyd...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.27.340
更新日期:2008-05-01 00:00:00
abstract::The in vitro dentin permeability of the constituents of two types of conventional phosphoric acid etching agents which had different viscosities, and their pH changes after being permeated dentin were investigated. It was recognized that, even though the etching was for a short time (one minute) followed by rinsing, t...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.8.164
更新日期:1989-12-01 00:00:00
abstract::Adhesion promoting monomers for precious metals, 2,3-epithiopropyl methacrylate (EP1MA), 4,5-epithiopentyl methacrylate (EP3MA), 9,10-epithiodecyl methacrylate (EP8MA), 10,11-epithioundecyl methacrylate (EP9MA), 9,10-epithiodecyl 4-vinylbenzoate (EP8VB), 2,3-epithiocyclohexyl methacrylate (EPCHMA), and 3,4-epithiobuty...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.26.29
更新日期:2007-01-01 00:00:00