Materiales : Enfermedad y medicina en la España del siglo XIX.

Este artículo pertenece a un dossier monográfico titulado 'Enfermedad y medicina en la España del siglo XIX'

Bond strength of Epiphany (TM) Sealer combined with different adhesive systems photo-activated with LED and QTH

The Epiphany (TM) Sealer is a new dual-curing resin-based sealer and has been introduced as an alternative to gutta-percha and traditional root canal sealers. The canal filling is claimed to create a seal with the dentinal tubules within the root canal system producing a 'monoblock' effect between the sealer and dentinal tubules. Therefore, considering the possibility to incorporate the others adhesive systems, it is important to study the bond strength of the resulting cement. Forty-eight root mandibular canines were sectioned 8-mm below CEJ. The dentine discs were prepared using a tapered diamond bur and irrigated with 1% NaOCl and 17% EDTA. Previous the application Epiphany (TM) Sealer, the Epiphany (TM) Primer, AdheSE, and One Up Bond F were applied to the root canal walls. The LED and QTH (Quartz Tungsten Halogen) were used to photo-activation during 45 s with power density of 400 and 720 mW/cm(2), respectively. The specimens were performed on a universal testing machine at a cross-head speed of 1 mm/min until bond failure occurred. The force was recorded and the debonding values were used to calculate Push-out bond strength. The analysis of variance (ANOVA) and Tukey's post-hoc tests showed significant statistical differences (P < 0.05) to Epiphany (TM) Sealer/Epiphany (TM) Primer/QTH and EpiphanyTM Sealer/AdheSE/QTH, which had the highest mean values of bond strength. The efficiency of resin-based filling materials are dependent the type of light curing unit used including the power density, the polymerization characteristics of these resin-based filling materials, depending on the primer/adhesive used.

Detailed measurements of radium inside a nodule of Albatross 1899-1900 - for Stations 13, 173 and 4658

Thanks to the courtesy of the British Museum of Natural History the author obtained from their Challenger collections two small nodules, and through a similar courtesy of the Mineralogical Department of the Riksmuseum in Stockholm one half of a much larger nodule, also from the Challenger Expedition. Results from his initial measurements of the radium contents of these samples convinced the author that the radium in the nodules is accumulated from the surrounding sediment. In the present paper the author conducted a much more thorough investigation on nodules obtained during the U.S. Albatross cruises of Dr. Agassiz. Detailed measurements of radium were conducted on individual layers and spots inside each nodule.

[Mujer de Castellón] [Material gráfico]

Inscripción en la parte inferior:"Provª de Castellon"

Accion de Bocairente [Material gráfico]

Resumen: Descripción: vista del ataque de las tropas francesas en Bocairente durante la segunda carlista (1872-1876). El año del combate: 1873

[Mujer de Valencia] [Material gráfico]

Inscripción en la parte inferior:"Provª de Valencia. Cosechera de seda en Puzol"

Zeng Wenzheng gong quan ji, [16 zhong]

spine title: Zeng Wenzheng gong quan shu

Archives diplomatiques; recueil mensuel de diplomatie, d'histoire et de droit international.

Subtitle varies.

The tragedy of Israel /

Pt. I. King Saul.--Pt.II. King David.--Pt.III. King Solomon.