Abstract:
:This study sought to evaluate the effects of different staining solutions on the colour stability of nanocomposites compared with microhybrid resin and to evaluate the degree of conversion of these two materials. Two different shades of two different composites were cured in polytetraflouroethylene disk rings. Coffee, tea and cola drinks were used as staining solutions, and distilled water was used as a control. Data were statistically analysed using a paired T-test with a significance level of 5%. Nano composite showed the highest degree of conversion (DC) values based on calculation of the bonded and free carbonyl peak intensities in the spectrum. The colour analysis showed that nanohybrid had the highest ΔE values when exposed to coffee solutions; they showed less color stability despite having a higher degree of conversion. Nano resin composite showed significantly higher discoloration than microhybrid composite.
journal_name
Dent Mater Jjournal_title
Dental materials journalauthors
Al Kheraif AA,Qasim SS,Ramakrishnaiah R,Ihtesham ur Rehmandoi
10.4012/dmj.2011-267subject
Has Abstractpub_date
2013-01-01 00:00:00pages
326-31issue
2eissn
0287-4547issn
1881-1361pii
DN/JST.JSTAGE/dmj/2011-267journal_volume
32pub_type
杂志文章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::This study compared bovine serum albumin (BSA) adsorption onto octacalcium phosphate (OCP) materials prepared from two wet preparations in the absence (w-OCP) and presence (c-OCP) of gelatin. Raman spectroscopy was used to analyze the BSA adsorption onto OCPs in a 150 mM Tris-HCl buffer containing 0.5 mM calcium and i...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2019-250
更新日期:2020-09-29 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 study evaluated changes in total enzymatic activity and degradation of demineralized dentin following the application of universal or self-etch adhesives. The universal adhesives -Scotchbond Universal (SU) and All-Bond Universal (ABU) and self-etch adhesives -Adper Easy Bond (EB) and G-aenial Bond (GB) were used f...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2019-304
更新日期:2020-12-03 00:00:00
abstract::The effect of acidic fluoride solution on NiTi arch wires was examined by testing crystal structure, tensile strength, morphology after fracture, and element release from wire under four different test solutions after 1 or 3 d immersion. Three-day immersion in a 0.2%/pH 4 solution did not form any new crystal structur...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.23.557
更新日期:2004-12-01 00:00:00
abstract::This in vitro study aimed to evaluate the effect of two different polymer-based CAD/CAM materials; resin-nano ceramic (Lava Ultimate [LVU]) and composite (CERASMART [CS]), their different surface pre-treatments, and use of different resin cements on the µTBS of adhesively bonded CAD/CAM onlays to dentin. CAD/CAM mater...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2017-442
更新日期:2019-02-08 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::Bioactive-glass (B-G) is a material known for its favorable biological response when in contact with surrounding fibro-osseous tissues, due not only to an osteoconductive property, but also to an osteostimulatory capacity, and superior biocompatibility for use in human body. The objectives of this paper are to review ...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2014-233
更新日期:2015-01-01 00:00:00
abstract::The aim of this in vitro study was to evaluate the pH value of intact and carious dentin in primary teeth using a pH-imaging microscope (SCHEM-100, HORIBA Ltd., Kyoto, Japan). Bucco-lingual cut sections of extracted human primary teeth, which had either mild or severe dentinal caries lesions, were placed on the pH-ima...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.23.628
更新日期:2004-12-01 00:00:00
abstract::Recently, an esthetic tooth coating material has been developed. The material consisted of a primer solution, a base coat, and a top coat. The purpose of this study, therefore, was to evaluate the color change of this tooth coating material and two resin composites after immersion in food-simulating, staining solution...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.25.352
更新日期:2006-06-01 00:00:00
abstract::This study was to evaluate the load bearing capacity of monolithic dental zirconia crowns, and the effect of surface finishing on fracture strength. (1) The zirconia plates were divided into 5 groups and polished by various types of polishing bur, every specimen was analyzed by surface roughness testing, and X-ray dif...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2017-391
更新日期:2019-03-31 00:00:00
abstract::The purpose of the present study was to evaluate the effect of four silane coupling agents on the bond strength between two resin-modified glass ionomer cements and a machinable leucite glass ceramic. Ceramic specimens were ground with silicon carbide paper and cleaned with phosphoric acid. They were then conditioned ...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.26.240
更新日期:2007-03-01 00:00:00
abstract::The effectiveness of a barbituric acid/copper (II) chloride initiator system in dentin was examined in terms of the effects of barbituric acid structures and dentin conditioners on bond strength. Curing times and tensile bond strengths to bovine dentin were measured for PMMA/MMA resins in conjunction with initiators c...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.14.221
更新日期:1995-12-01 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::This study evaluated the effects of combining enamel microabrasion and dental bleaching on the physical properties of enamel, using in vitro and in situ conditions and evaluating surface roughness, enamel microhardness and scanning electron microscopy images. One hundred sound bovine teeth were sectioned and cut into ...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2014-334
更新日期:2016-01-01 00:00:00
abstract::The bonding efficacy of sclerotic dentin was determined by measuring the polymerization contraction gap width of a commercial light-activated resin composite in a cervical defect and by measuring the micro-Vicker's hardness at the dentin adhesive surface; morphological characteristics were observed using a scanning el...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.20.359
更新日期:2001-12-01 00:00:00
abstract::The purposes of this study were to examine the shock absorption capability of addition-cured silicone denture relining materials and the bonding strength of addition-cured silicone denture relining materials and a commercial mouthguard material to determine its applicability to mouthguard adjustment. Two addition-cure...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2015-378
更新日期:2016-01-01 00:00:00
abstract::To recognize good mechanical properties and water-resistance of a dental resin, dimethacryloxyethyl-1,1,6,6-tetrahydro-perfluoro-hexamethylene-1,6-dicarbamate (FDMHD) was newly synthesized. FDMHD initially was a white powder with m.p. 98.5-99.5°C. The copolymers of FDMHD and methyl methacrylate (MMA), FDMHD/MMA copoly...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2010-126
更新日期:2011-01-01 00:00:00
abstract::The purpose of this study was to devise and propose appropriate conditions for the photographing of thermal images in the oral cavity and to evaluate which thermography techniques can be applied to dentistry by evaluating the differences in temperature among oral tissues. Thermal images of oral cavities of 20 voluntee...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.22.436
更新日期:2003-12-01 00:00:00
abstract::This study aimed to evaluate the effect of an acidic-adjusted pH of solvent in silanization on the amount of fluoride released and mechanical properties of heat-cured acrylic resin containing a silanized fluoride-releasing filler. The experimental groups were divided into 4 groups; non-silanized, acidic-adjusted pH, n...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2015-403
更新日期:2016-01-01 00:00:00
abstract::A zirconia-binding peptide motif was identified using a peptide phage display system. Yttria stabilized zirconia beads and discs were used as the target. Quartz crystal microbalance was used to monitor the binding of phages to zirconia. Starting from a library of phages displaying random sequences of 12-mer peptides, ...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2011-161
更新日期:2011-01-01 00:00:00
abstract::Initial attachment of human oral keratinocytes (HOKs) cultured on mirror-surfaced commercially pure titanium (Ti) or yttria-stabilized tetragonal zirconia polycrystals (TZP) was investigated. Numbers of viable attached HOKs, their mRNAs and proteins expression of laminin γ2 and integrin β4 were evaluated using the WST...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2011-189
更新日期:2012-01-01 00:00:00
abstract::The purpose of this study was to examine the effect of an electro-ionizing toothbrush with stannous fluoride in the treatment of dentin hypersensitivity following periodontal surgery. Thirty-two volunteers with dentin hypersensitivity were divided in two equal groups each using different methods: (Group I) stannous fl...
journal_title:Dental materials journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.4012/dmj.20.164
更新日期:2001-06-01 00:00:00
abstract::The corrosion behavior of three Ni-Ti alloys with compositions as commercial super-elastic orthodontic wires was investigated using polished plate specimens. Corrosion resistance was estimated by potentiodynamic polarization measurement in 0.9% NaCl and 1% lactic acid solutions and analysis of released metals by atomi...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.17.31
更新日期:1998-03-01 00:00:00
abstract::The aim of this study was to evaluate the bond strength of three adhesive systems: Excite™, Adper Prompt L-Pop™ and AdheSE One™ to varying degrees of fluorotic enamel using micro-tensile bond strength (μTBS) tests. Human enamel was classified according to the Thylstrup and Fejerskov Index. The interface resin-enamel w...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2012-140
更新日期:2012-01-01 00:00:00
abstract::This study aimed to investigate the maximum depth imaging and optical properties of the dentin near the pulp by using optical coherence tomography (OCT) and to explore the possibility of measuring the remaining dentin thickness (RDT). Human third molars were used. In experiment 1, the cuspal dentin blocks (0.50-mm to ...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2013-303
更新日期:2014-01-01 00:00:00
abstract::In this study, different glasses were investigated to improve reusable investments. Borosilicate glass (BSG) powder and soda-lime glass (SLG) powder were prepared by milling broken beakers and microscope slides, respectively, and used in experimental investments (I-BSG, I-SLG) by blending glass powder (10 wt%) with cr...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2011-040
更新日期:2011-01-01 00:00:00
abstract::The influence of temperature and relative humidity (RH) on the bond strength of orthodontic adhesives was investigated. Two self-etching/composite type, one acid-etching/composite type, and one acid-etching/PMMA type of adhesives were examined under different temperature and RH conditions. Orthodontic brackets were bo...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.27.654
更新日期:2008-09-01 00:00:00
abstract::This study aimed to evaluate influence of different post-end positions in alveolar bone level on stress distributions in resin-core build-up tooth under different load directions. Three-dimensional mathematical models of a root-filled mandibular premolar tooth were constructed. Resin post and core were built-up with s...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.2017-160
更新日期:2018-06-08 00:00:00
abstract::Two types of patterns were tested for castability: 1) polyester mesh pattern (20mm x 22mm with 100 open squares) and 2) 20mm x 20mm wax plates 1.0 and 1.5 mm in thickness. These materials were invested using a pre-arranged commercial phosphate-bonded investment for titanium. Three different types of casting machines w...
journal_title:Dental materials journal
pub_type: 杂志文章
doi:10.4012/dmj.12.245
更新日期:1993-12-01 00:00:00