Abstract:
:The purpose of this study was to establish a method using FTIR to evaluate the polymerization characteristics of UDMA-based resins. Three kinds of experimental UDMA-based resins were prepared with various molar fractions. IR spectra of the cured film specimens were measured with FTIR before and after extracting residual monomer from each specimen by MeOH. From the IR spectra, the changes in the number of double bonds were measured, with the NH absorbance peak as an internal standard, and the amounts of residual monomers (RM) were calculated. The MeOH-immersed specimens were analyzed by HPLC. The RM measured by FTIR were compared with those measured by HPLC. The RM measured by HPLC were more than those by FTIR. Since these differences could be due to the difference in the area measured, this FTIR estimation method of residual monomers in cured resins using the NH absorbance peak as an internal standard could be an appropriate method when the resin monomer does not contain aromatic compounds.
journal_name
Dent Mater Jjournal_title
Dental materials journalauthors
Nomoto R,Hirasawa Tdoi
10.4012/dmj.18.176keywords:
subject
Has Abstractpub_date
1999-06-01 00:00:00pages
176-83issue
2eissn
0287-4547issn
1881-1361journal_volume
18pub_type
杂志文章abstract::This study evaluated the effect of resin coating (COA) on dentin bond strength (BS) of five resin cements (RC). Ten groups were tested, according to RC and COA combinations. RCs were applied onto prepolymerized resin discs, which were bonded to dentin surfaces. Teeth were stored in water for 24 h, subjected to 5,000 t...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2015-099
更新日期:2015-01-01 00:00:00
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 Thyl...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2011-023
更新日期:2011-01-01 00:00:00
abstract::In this study, wedge-shaped CP titanium castings and Ti-6Al-7Nb alloy castings were produced by three types of investment. The effects of the castings' thickness on surface reaction layer were investigated by measuring Vickers hardness, observing the microstructure, and analyzing the oxygen concentration. It was found...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.23.387
更新日期:2004-09-01 00:00:00
abstract::This study investigated hydrogen peroxide (H2O2) concentration of two home bleaching gels, in their dispensing syringes and their degradation in vivo in intraoral bleaching trays. Two bleaching gels were studied, 7.5% hydrogen peroxide (HP) and 20% carbamide peroxide (CP). The concentration of H2O2 was determined in d...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2012-317
更新日期:2013-01-01 00:00:00
abstract::The aim of this study was to estimate the flexural properties of three kinds of experimental fiber-reinforced composite (FRC) posts and to evaluate their potential use as posts. Experimental FRC posts were fabricated with glass, aramid, and UHMWP fibers. Commercial FRC posts were used for comparison. A three-point ben...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2010-053
更新日期:2011-01-01 00:00:00
abstract::The influence of the number of cycles on shear fatigue strength to enamel and dentin using dental adhesives in self-etch mode was investigated. A two-step self-etch adhesive and two universal adhesives were used to bond to enamel and dentin in self-etch mode. Initial shear bond strength and shear fatigue strength to e...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2017-012
更新日期:2018-01-30 00:00:00
abstract::The purpose of this study was to evaluate the effect of osteogenic differentiation of bone marrow stromal stem cells (BMSCs) on bone formation in a novel interconnected porous calcium hydroxyapatite (IP-CHA). BMSCs/IP-CHA composites, as a cell-hybrid artificial bone, were made by injecting BMSCs solution into IP-CHA s...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.26.162
更新日期:2007-03-01 00:00:00
abstract::The reinforcement mechanism of dentin mechanical properties by intracanal medicaments was investigated. The dumbbell-shaped specimens were prepared from a collagen sheet, demineralized dentin and organic dissolved dentin. After immersing the specimens in intracanal medicaments (eugenol and formocresol), the tensile te...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.18.304
更新日期:1999-09-01 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::'Tooth-coloured' ProRoot MTA is an endodontic cement comprising an 80:20 wt% mixture of white Portland cement (WPC) and bismuth oxide. The setting reactions within this cement system are not currently well understood. Accordingly, this research monitors the early hydration chemistry of ProRoot MTA by X-ray diffraction...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2014-309
更新日期:2015-01-01 00:00:00
abstract::This study evaluated the biomineralization and dentinal tubules occlusion abilities of the carboxyl-terminated polyamidoamine dendrimer (PAMAM-COOH) on human demineralized dentin in vivo at different time points. Demineralization dentin model with and without treated with PAMAM-COOH were sutured to the interior side o...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2015-209
更新日期:2016-01-01 00:00:00
abstract::The aim of this study was to determine the effect of autoclave polymerization on the transverse strength of denture base polymers. To this end, 30 rectangular test specimens were fabricated of two heat-polymerized denture base polymers. The test groups were: (I) control, i.e., conventional water bath to polymerize res...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:
更新日期:2008-07-01 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 study investigated the effects of spherical silica fillers on the physical and mechanical properties of resin-modified glass-ionomer cement (RMGIC). Specimens were fabricated by mixing untreated (UF) or silanized (SF) spherical silica filler into the powder of a commercially prepared RMGIC. The original RMGIC and...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.23.146
更新日期:2004-06-01 00:00:00
abstract::The aim of this study was to compare the shear bond strengths (SBS), failure modes (adhesive, cohesive, or mixed), and marginal microleakage occurrence of conventional resin (CR)-based, glass ionomer (GI)-based, and self-adhesive resin (SAR)-based fissure sealants with or without prior phosphoric acid (PA) etching. Fi...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2013-227
更新日期:2014-01-01 00:00:00
abstract::Mechanical responses of the test specimen under bidirectional and unidirectional loading were investigated using a newly developed masticatory simulator. The simulator adopted a four-bar linkage mechanism to create both loading patterns. Scratch/occlusal contact characteristics, contact force profiles and the fracture...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2016-198
更新日期:2016-01-01 00:00:00
abstract::Novel fast-setting calcium silicate cement with fluoride (CSC) has been developed for potential applications in tooth crown. The aim of this study was to test the diametral tensile strength (DTS) of different CSC compositions in humid condition on day1, 28, and 180. We tested 'bond CSC' with 3.5% fluoride and no radio...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2015-390
更新日期:2016-01-01 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::Adhesion promoting monomers for dental metals, 5-(4-vinylbenzyl)-2-thiobarbituric acid (5VS), 6- (4-vinylbenzyl-n-propyl) amino-1,3,5-triazine-2,4-dithione (VBATDT) and 9,10-epithiodecyl methacrylate (EP8MA), were synthesized and surface treatment agents were prepared by dissolving each monomer in ethanol or acetone. ...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.22.343
更新日期:2003-09-01 00:00:00
abstract::This study evaluated a new enzyme solution (SFC-V) for dentin caries removal, and obtained results were compared with Carisolv. Both solutions were used with a prototype plastic instrument - this being a modified technique for Carisolv. Five carious deciduous teeth were sectioned, and both treatments were applied alte...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.25.675
更新日期:2006-12-01 00:00:00
abstract::The mechanical properties of polycarboxylate cements containing 20 mass% of four kinds of aluminoborate whiskers with different fiber lengths and diameters were evaluated. Bending strength of the cements increased with increase in fiber length, whereby the strength of the cement with the longest fiber was about two ti...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.27.561
更新日期:2008-07-01 00:00:00
abstract::The purpose of the present study was to evaluate the bond strength between a fiber-reinforced composite (FRC) and six luting agents (Panavia F 2.0, Linkmax MC, Chemiace II, Multibond, Super-Bond C&B, and Fuji I). A prosthodontic resin composite material (RC-control) and a luting agent containing no functional monomer ...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.26.628
更新日期:2007-09-01 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::The objective of the study was to compare 1) the mean micro-shear bond strength and 2) failure mode of cements to metals in nonenclosed and mold-enclosed specimens. Specimens were prepared in mold-enclosed and non-enclosed formats from two RMGIC's and a self-adhesive resin-cement. 3-way ANOVA analysis and Tukey post h...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2013-065
更新日期:2013-01-01 00:00:00
abstract::The depths of cure and the distributions of degree of conversion (DC), polymerization conversion (PC) and percent pendant double bonds (PDB) of light-cured composite resins cured under various intensities of light were investigated. When the total amount of exposure, represented by the product of the light intensity a...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.13.198
更新日期:1994-12-01 00:00:00
abstract::The relation between the bonding efficacy of the dentin adhesive and the physical change of the dentin after treatment with various dentin cleansers was investigated. The dentin surface was cleaned with one of the seven experimental dentin cleansers, 5, 10, 20, 30 and 40% of the phosphoric acid, neutralized 0.5 M EDTA...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.8.76
更新日期:1989-06-01 00:00:00
abstract::Previously, high temperature properties of the silver-palladium-copper-gold alloy were investigated. In this study, the thermal expansion percentage and coefficient, and high temperature strengths of ADAS Type 3 gold alloy were investigated up to the liquidus temperature. Furthermore, microstructural and compositional...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.23.81
更新日期:2004-06-01 00:00:00
abstract::This study examined the antimicrobial/antifungal ability of a tissue conditioner containing a photocatalyst for Escherichia coli, Streptococcus mutans, Staphylococcus aureus and Candida albicans. The photocatalyst was mixed with tissue conditioners powders at concentrations of 0, 10, 15, and 20 wt%. Tissue conditioner...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2010-203
更新日期:2011-01-01 00:00:00
abstract::The purpose of this study was to evaluate the effect of various incremental filling techniques on adhesion between composite and cavity floor using light-cured resin composite. Black ABS resin and hybrid resin composite were used as mold materials--instead of dentin--for the preparation of cavities, and standardized t...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.25.503
更新日期:2006-09-01 00:00:00
abstract::Besides micro-mechanical interlocking through hybrid-layer formation, self-etch adhesives may benefit from additional chemical interaction between the functional monomer and residual hydroxyapatite. One-step adhesives are commonly associated with lower bonding effectiveness, which must be attributed in part to the dis...
journal_title:Dental materials journal
pub_type: 杂志文章,评审
doi:10.4012/dmj.24.1
更新日期:2005-03-01 00:00:00