PURPOSE The purpose of this study was to preliminarily evaluate the influence of diabetes mellitus (DM) on periodontal tissue without establishment of periodontitis. METHODS Seven-week-old db/db mice were used for the diabetic experimental group and systematically healthy mice of the same age were used as controls. After 1 week of acclimatization, the animals were sacrificed for hard and soft...

BACKGROUND The thermal expansion of the investment can be restricted by the metal casting ring because the thermal expansion of the ring is less than that of the investment. The ringless casting procedure is in use in clinical dentistry, though there is little scientific data to support its use in fixed partial dentures. In this study, marginal discrepancy of castings produced with the ringless...

PURPOSE The aim of this ex vivo study was to compare the accuracy of radiographic and electronic root canal length determination methods, compared with actual root canal length obtained with stereomicroscope. MATERIALS AND METHODS Thirty extracted single-rooted permanent teeth were used for this study. After access preparation, actual length (AL) of the root canal were determined for each too...

Objectives: To evaluate in vitro, the effect of 38% silver diamine fluoride (SDF) pretreatment on microleakage and shear bond strength resin-modified glass ionomer cement to primary dentin. Materials methods: A total 80 extracted sound molars were included this in-vitro study randomly assigned into four equal groups (n=20 teeth/group) according evaluation test performed. For test, class V cavit...

The desired result of the Thermafil system is described as a centered carrier encased by gutta-percha in apposition to the canal walls. This study examined, in curved canals, the intracanal relationships of: (a) the metal carrier; (b) the surrounding gutta-percha; and (c) the sealer. Following the manufacturer's recommended techniques, 20 resin blocks that had canals prepared with conservative ...

PURPOSE This study assessed the effect of preparation design on marginal adaptation and also compared the sensitivity and specificity of clinical evaluation techniques for marginal accuracy of cast restorations to stereomicroscopy. MATERIALS AND METHODS Three Ivorine molar teeth of different designs were prepared. (A)-A complete crown preparation with buccal shoulder and beveled finish line. ...

The aim of this in vitro study was to assess the microtensile bond strength of quartz fiber posts to different composites, and to composite combinations used as core materials. Thirty fiber posts were treated with a 24% hydrogen peroxide solution and silanized. The posts were divided into 5 groups according to the resin composite used as follows (n = 6): G1 - Ælite Flow (Bisco, Inc), G2 - Filte...

We have developed a mouse system by which to track the migration and homing of cells in a setting of bone marrow transplantation (BMT)–induced graft-versushost disease (GVHD) after systemic infusion using enhanced green fluorescence protein (eGFP) transgenic (Tg) cells and a simple application of a fluorescence stereomicroscope outfitted with a color charge-coupled device (CCD) camera. Whole bo...

Stereomicroscope The new Carl Zeiss stereomicroscope Stemi 2000-CS allows the user to view the sample whilst other observers view the procedure by video. Greenough type stereomicroscopes create their stereo effect by having separate light paths set at different angles, one for each eye. However, when video or photomicrography is being carried out most stereomicroscope systems remove light from ...