OBJECTIVE The aim of this study was to evaluate the effects of tribochemical silica coating and silane surface conditioning on the bond strength of rebonded metal and ceramic brackets. MATERIAL AND METHODS Twenty debonded metal and 20 debonded ceramic brackets were randomly assigned to receive one of the following surface treatments (n=10 for each group): (1) sandblasting (control); (2) tribo...

Elongation and epidermal cell turgor (P) of Begonia argenteoguttata L. leaves were simultaneously measured to determine the wall-yielding behavior of growing leaf cells in response to changes in plant water status. Rapid changes in plant water status were imposed by irrigating the rooting media with solutions of -0.20 and -0.30 MPa mannitol. These treatments caused decreases in P of 0.09 and 0....

Although implants made with bioactive glass have shown promising results for bone repair, their application in repairing load-bearing long bones is limited due to their low fracture toughness and fairly fast degradation response in vivo. In this paper, we describe our investigation of freeform extrusion fabrication of silicate based 13-93 bioactive glass scaffolds reinforced with titanium fiber...

Mechanisms of immunosuppressive action of mycophenolic acid (MPA) on rat lymphocytes and correlations among MPA plasma concentrations (pharmacokinetics) and its suppression of immune functions (pharmacodynamics) were studied in vitro and in vivo. In vitro, MPA inhibited concanavalin A-stimulated lymphocyte proliferation in blood [tritium-labeled thymidine ([(3)H]TdR) incorporation, percentage o...

At present, there are many damages to concrete structures in buildings that have build. One such damage is the appearance of cracks. Cracks caused by factors, including loads exceed limits, temperature, components constituent material, process making and time. This research was conducted with aim studying effect use admixture "x", fiber cement grouting on compressive strength cracking untreated...

Brick is a building material that often used for residential walls. The bricks in this study were with the addition of palm frond charcoal manufacturing process. aims (1) to determine effect adding stem on manufacture red terms compressive strength, water absorption (Suction rate) and apparent density (apparent density). (2) Comparing test results SNI 15-2094-2000 standard. experimental begins ...

BACKGROUND The data from cohorts of childhood-onset granulomatosis with polyangiitis (GPA) and microscopic polyangiitis (MPA) remain scarce and heterogeneous. We aimed to analyse the features at presentation, therapeutic approaches and the disease course of these rare diseases. METHODS Electronic searches of Medline and the Cochrane Central Register of Controlled trials database were conducte...

In vitro bond strengths of three resin adhesive systems were tested using 111 primary teeth. Ninety-six flat dentin surface specimens were divided into six groups consisting of 16 primed or 16 unprimed samples for each adhesive system. The remaining 15 tooth samples were divided into three groups of five to determine each adhesive system's bond strength to primary etched enamel. Resin buttons w...

This study was conducted to evaluate the shear bond strength (SBS) of various ceramic bracket base designs bonded to glazed aluminous (Vitadur Alpha) and fluorapatite (IPS e.max Ceram) ceramics, to examine the mode of failure, and to determine the debonding characteristics of the brackets and the ceramic surfaces after bond failure. Forty ceramic discs (15 mm in diameter and 1.5 mm thick) of ea...

BACKGROUND We studied the biological safety, biomechanics, and tissue compatibility of calcium phosphate cement and Polymethyl Methacrylate composite bone cement mixed in different ratios. MATERIAL/METHODS CPC and PMMA were mixed in different ratios (3:1, 2:1, 1:1, 1:2, 1:5, 1:10, 1:15, and 1:20). PMMA solvent is a general solvent containing a dissolved preparation of the composite bone cemen...