Simulation of transient thermal stress in gypsum-bonded investment.

abstract：:Surface replication is a nondestructive evaluation technique applied in examining surfaces' cracks/wear. This is quite valuable when the surface of interest cannot be further manipulated by cutting or polishing to fit directly under a microscope. Replication by acetate sheets is one of the techniques applied in indust...

journal_title：Dental materials journal

authors： Ijbara M,Wada K,Wada J,Jayawardena JA,Miyashin M

更新日期：2019-02-08 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

authors： Kikuchi H,Onouchi M,Miyanaga K,Wakashima M,Okuno O,Nishiyama M

更新日期：2004-09-01 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

authors： Yagi S,Zhang Z,Aida Y,Hotta Y,Tamaki Y,Miyazaki T

更新日期：2011-01-01 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

authors： Suh YR,Ahn JS,Ju SW,Kim KM

更新日期：2017-01-31 00:00:00

abstract：:The aim of this study was to investigate the effect of three metal priming agents on the bond strength of adhesive resin cement to Silver-Zinc-Tin-Indium (Ag-Zn-Sn-In) alloy and pure Ag, Zn, Sn, and In. The specimens were air-abraded with alumina and then primed with one of three metal priming agents: V-Primer, Esteni...

journal_title：Dental materials journal

authors： Imamura N,Kawaguchi T,Shimizu H,Takahashi Y

更新日期：2018-03-30 00:00:00

abstract：:The objective of this study was to examine the effects of storage conditions on the flexural strengths of resin composite materials for CAD/CAM restorations. Seven commercially available resin composite CAD/CAM blanks were examined. Rectangular specimens (4.0×1.2×4.0 mm) of each material were trimmed from the blanks a...

journal_title：Dental materials journal

authors： Hibino Y,Nagasawa Y,Eda Y,Shigeta H,Nakajima H

更新日期：2020-09-29 00:00:00

abstract：:The aim of the present study was to examine whether interconnected porous hydroxyapatite ceramics (IP-CHA) could be used as bone substitute for implant treatment in reconstructive surgery. We firstly assessed if surround of the titanium surface placed into granular or block-type IP-CHA can observe new bone formation i...

journal_title：Dental materials journal

authors： Minami M,Takechi M,Ohta K,Ohta A,Ninomiya Y,Takamoto M,Fukui A,Tada M,Kamata N

更新日期：2013-01-01 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

authors： Kurata S,Umemoto K

更新日期：2008-07-01 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

authors： Tashiro S,Kawaguchi T,Hamanaka I,Takahashi Y

更新日期：2021-01-15 00:00:00

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,...

journal_title：Dental materials journal

authors： Al Kheraif AA,Qasim SS,Ramakrishnaiah R,Ihtesham ur Rehman

更新日期：2013-01-01 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

authors： Demirel G,Gür G,Demirsoy FF,Altuntaş EG,Yener-Ilce B,Kiliçarslan MA

更新日期：2020-01-31 00:00:00

abstract：:The clinical feasibility of a novel device called a Cariotester was investigated by measuring the Knoop hardness (KHN) of white spot lesions diagnosed as ICDAS code 1, 2 or 3. To obtain an equation for converting the Cariotester indentation depth into the KHN, a regression analysis was performed between the depth and ...

journal_title：Dental materials journal

authors： Shimizu A,Yamamoto T,Nakashima S,Nikaido T,Sugawara T,Momoi Y

更新日期：2015-01-01 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

authors： Hashimoto K,Yoshinari M,Matsuzaka K,Shiba K,Inoue T

更新日期：2011-01-01 00:00:00

abstract：:Gold alloys with Cu contents of 10 mass%, 20%, and 30% were used for morphological observation of porous surface structures after heating at 800 degrees C in air followed by pickling with acid solution. With increasing Cu content in the gold alloy, the internal oxidation zone became well-developed in the alloy matrix....

journal_title：Dental materials journal

authors： Ohno H,Endo K,Haneda K,Tamura M,Hikita K

更新日期：2005-12-01 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

authors： Nikolaidis A,Vouzara T,Koulaouzidou E

更新日期：2020-09-29 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

authors： Durkan R,Ozel MB,Bağiş B,Usanmaz A

更新日期：2008-07-01 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

authors： Hashiguchi M,Nishi Y,Kanie T,Ban S,Nagaoka E

更新日期：2009-05-01 00:00:00

abstract：:Miniplates have been used during the last decade to facilitate stability between bony fragments in the maxillofacial region and are currently the preferred surgical method for the fixation of fractures and osteotomies. The aim of this study was to evaluate and compare the biomechanical behaviors of six different types...

journal_title：Dental materials journal

authors： Ergun S,Ofluoğlu D,Saruhanoğlu A,Karataşli B,Deniz E,Özel S,Tanyeri H

更新日期：2014-01-01 00:00:00

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

authors： Stawarczyk B,Sener B,Trottmann A,Roos M,Ozcan M,Hämmerle CH

更新日期：2012-01-01 00:00:00

abstract：:The fluorescence and physical properties of thulium-doped zirconia were investigated. A standard grade of zirconia (TZ-3Y-E) and two translucent dental zirconia materials (Zpex and Zpex Smile) were examined. The specimens were prepared by addition of 0-1.5 wt% Tm2O3 and then sintering. When exposed to UV light, the Tm...

journal_title：Dental materials journal

authors： Nakamura T,Okamura S,Nishida H,Usami H,Nakano Y,Wakabayashi K,Sekino T,Yatani H

更新日期：2018-11-30 00:00:00

abstract：:The aim of this in vitro study was to evaluate the effects of different preparation angles on the precision of fit of zirconia crown frameworks. Dies were fabricated with three different preparation angles: 4, 8, and 12 degrees total taper. Ten copings were fabricated for each angle by a laboratory and a milling-cente...

journal_title：Dental materials journal

authors： Beuer F,Edelhoff D,Gernet W,Naumann M

更新日期：2008-11-01 00:00:00

abstract：:Multi-purpose bonding performance of three kinds of newly synthesized phosphonic acid monomers was investigated. Methacryloxyalkyl or acryloxyalkyl phosphonoacetates of 6-MHPA, 6-AHPA, 10-MDPA were synthesized in 42.8-51.9% yields with a light yellow viscous liquid, and identified as new compounds by 1H NMR, IR, and e...

journal_title：Dental materials journal

authors： Ikemura K,Tay FR,Nishiyama N,Pashley DH,Endo T

更新日期：2007-01-01 00:00:00

abstract：:To determine the effect of titanium (Ti) surface modification by ultraviolet irradiation (UVI) on the bond strength between Ti and porcelain. Grade 2 Ti plates were allotted to five groups: sandblasted (SA), 15 min UVI (UV), SA+5 min UVI (SA+UV5), SA+10 min UVI (SA+UV10), and SA+15 min UVI (SA+UV15). After surface tre...

journal_title：Dental materials journal

authors： Kumasaka T,Ohno A,Hori N,Hoshi N,Maruo K,Kuwabara A,Seimiya K,Toyoda M,Kimoto K

更新日期：2018-06-08 00:00:00

abstract：:This study aimed to determine the influence of sodium hypochlorite (NaOCl) contamination on the microhardness of build-up composites. Fifty-two samples, from each of three build-up materials (LuxaCore Dual, MultiCore flow and Rebilda DC) were prepared. Half of the samples from each material were stored in physiologic ...

journal_title：Dental materials journal

authors： Wegehaupt FJ,Betschart J,Attin T

更新日期：2010-08-01 00:00:00

abstract：:This study aimed to evaluate cyclic fatigue resistance and bending properties and torque/force generation of WaveOne Gold (WOG) Primary in comparison with WaveOne (WO) Primary and Reciproc (RE) R25. A cyclic fatigue test revealed that the WOG Primary took significantly longer time to fracture compared with the WO Prim...

journal_title：Dental materials journal

authors： Fangli T,Maki K,Kimura S,Nishijo M,Tokita D,Ebihara A,Okiji T

更新日期：2019-06-01 00:00:00

abstract：:The aim of this study was to evaluate temperature changes in the pulp chamber during polymerization of four different pulp-capping materials using a LED-light-curing-unit in the contact and noncontact positions. A pulpal circulation mechanism was simulated to measure increases in temperature in four pulp-capping mater...

journal_title：Dental materials journal

authors： Savas S,Botsali MS,Kucukyilmaz E,Sari T

更新日期：2014-01-01 00:00:00

abstract：:The torsional fracture strength at the interface between a base plate and veneering material was evaluated for three kinds of veneered restoration: porcelain fused to zirconia (PFZ), porcelain fused to metal (PFM), and composite resin veneered metal (CRVM). The metal and zirconia base plate (30×4×0.4 mm) were prepared...

journal_title：Dental materials journal

authors： Watanabe F,Seto M,Ueda K,Ozawa M

更新日期：2018-07-29 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

authors： Singhatanadgit W,Junkaew P,Singhatanadgid P

更新日期：2016-01-01 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

authors： Franco LM,Machado LS,Salomão FM,Dos Santos PH,Briso AL,Sundfeld RH

更新日期：2016-01-01 00:00:00

abstract：:A new tensile fatigue test using a stainless steel screw was introduced. A transparent PMMA rod was selected as the test material. A hole was drilled and tapped into the rod; a screw was put into the rod with dental cement or without cementation. Three types of cyclic loads were applied to the test piece; the number o...

journal_title：Dental materials journal

authors： Nishimura F,Nakamura H,Watari F,Tanaka I,Takahashi H

更新日期：1992-12-01 00:00:00