Influence of different mould materials on the degree of conversion of dental composite resins -

In this study, the degree of conversion (DC) was analyzed on the surfaces of dental composite resins cured in different mould materials with different irradiation times.

Surface structure of fiber-reinforced composite implant and its effect on the attachment of implant to simulating bone material -

Fiber-reinforced composite (FRC) made of polymethyl methacrylate (PMMA) and E-glass fibers has been developed for bone segment defect reconstructions. It has been shown that exposed glass fibers predispose intergration of implant to bone. The aim of this study was to investigate how fibers of the implant surface can be exposed by solvent treatment and how the exposed fibers with different orientations effect the attachment of the implant to a bone simulating material

Import av tanntekniske arbeid -

I Europa reguleres alle dentalmaterialer av Direktivet for medisinsk utstyr. Tanntekniske produkter klassifiseres som «individuelt tilpasset utstyr», og slikt utstyr er unntatt CE-merking, men tannteknikeren skal bekrefte at arbeidet tilfredsstiller kravene i direktivet. Produktene skal fortrinnsvis fremstilles av CE-merkede materialer (1). Det er også krav om at materialene som blir brukt i importarbeider tilfredsstiller kravene i EU-direktivet, og det skal derfor følge med dokumentasjon på overensstemmelse med direktiv 93/42/EØF. Helsemyndighetene skal kunne gjennomføre markedskontroll for eksempel ved å se om arbeidenes faktiske og deklarerte sammensetning stemmer overens.

Titan – det biokompatible metallet med potensial for forbedring -

Over and above titaniums’s acknowledged biological and biochemical compatibility with the body, the biomechanical compatibility can be improved through alloying and heat treatment that reduce its inherent stiffness, bringing it closer to the stiffness of tooth structure, while increasing its strength.

Fracture mode during cyclic loading of implant-supported single-tooth restorations -

The study compared the mode of fracture and number of cyclic loads until veneering fracture when ceramic and metal ceramic restorations with different veneering ceramics were supported by implants.

The development of T cell-dominated inflammatory responses induced by sodium lauryl sulphate in mouse oral mucosa -

The effect of a single time exposure of SLS to the buccal mucosa of mice was compared to one application of the hapten OXA (oxazolone), evaluated by routine histology, immunohistochemistry and ELISA quantifications of cytokines. The SLS concentrations (2%, 4% and 8%) resulted in epithelial surface necrosis at 1-6 h, after 2-6 h accumulation of intra-epithelial neutrophils and at 24 h the main inflammatory cells were mononuclear.